CN107794016A - A kind of rejected well drilling liquid harmless treatment process and device - Google Patents
A kind of rejected well drilling liquid harmless treatment process and device Download PDFInfo
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- CN107794016A CN107794016A CN201711096481.0A CN201711096481A CN107794016A CN 107794016 A CN107794016 A CN 107794016A CN 201711096481 A CN201711096481 A CN 201711096481A CN 107794016 A CN107794016 A CN 107794016A
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- well drilling
- rejected well
- drilling liquid
- liquid
- harmless treatment
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- 239000007788 liquid Substances 0.000 title claims abstract description 161
- 238000005553 drilling Methods 0.000 title claims abstract description 121
- 238000011282 treatment Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 27
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 37
- 239000002699 waste material Substances 0.000 claims abstract description 35
- 239000007787 solid Substances 0.000 claims abstract description 33
- 239000002981 blocking agent Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 13
- 239000002270 dispersing agent Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 239000007790 solid phase Substances 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 11
- 239000002562 thickening agent Substances 0.000 claims description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 9
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 9
- 239000003431 cross linking reagent Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000005011 phenolic resin Substances 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- -1 small molecule amine Chemical class 0.000 claims description 5
- 239000000176 sodium gluconate Substances 0.000 claims description 5
- 235000012207 sodium gluconate Nutrition 0.000 claims description 5
- 229940005574 sodium gluconate Drugs 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 229920001732 Lignosulfonate Polymers 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 230000002776 aggregation Effects 0.000 claims description 4
- 238000004220 aggregation Methods 0.000 claims description 4
- 229920006321 anionic cellulose Polymers 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000004310 lactic acid Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 238000000053 physical method Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- SSJXIUAHEKJCMH-UHFFFAOYSA-N cyclohexane-1,2-diamine Chemical compound NC1CCCCC1N SSJXIUAHEKJCMH-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010702 perfluoropolyether Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000447 polyanionic polymer Polymers 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5086—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/062—Arrangements for treating drilling fluids outside the borehole by mixing components
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to oilfield exploitation environmental protection treatment technical field, discloses a kind of rejected well drilling liquid harmless treatment process and device.The technique is mixed to prepare blocking agent including being carried out to rejected well drilling liquid except solid processing, and by the rejected well drilling liquid after removing admittedly with auxiliary agent；Described device includes skid and the solid-liquid separation unit being slidably disposed on the skid and mixes unit.Removing for the present invention need not add demulsifier in solid processing step, but with blocking agent injection stratum is directly prepared into after physical method simple process waste liquid, reduce the expense of processing, and can suppresses the water breakthrough of injection water, effectively improves water flooding effectiveness.The device of the present invention is skid structure, detachably, and it is easy to connect rapid, the pretreatment of rejected well drilling liquid can be realized and adjusted and blocked up, reduce the processing cost of rejected well drilling liquid, avoid environmental pollution, the blocking agent made from carries out stifled tune to oil-water well simultaneously, is advantageous to improve recovery ratio.
Description
Technical field
The invention belongs to oilfield exploitation environmental protection treatment technical field, and in particular to a kind of rejected well drilling liquid harmless treatment work
Skill and device.
Background technology
Drilling fluid is a kind of circulation of fluid for drilling well, and in drilling well work, it is the blood of drilling well, is to ensure drilling well
The indispensable material of normal operation, it, which has, carries suspension landwaste, balancing layer pressure, cooling and lubricating drill bit and drilling tool, clear
The effect such as well-flushing bottom, the protection borehole wall and oil-gas Layer and raising bit speed, passing power.
Rejected well drilling liquid is caused pollutant in drilling process, such as：The landwaste discharged in drilling process and a small amount of drilling well
The drilling fluid and kill-job for returning discharge when liquid, completion from pit shaft need that lays in be redrilled well liquid.Rejected well drilling liquid is a kind of multiphase
Stable colloidal suspension system, main component are clay, weighting material, chemical treatments, sewage, sump oil, drilling cuttings etc., and it, which has, contains
Water rate is high, and mobility is strong, and volume is big, extraction and separation wherein poisonous and harmful (heavy metal, acid, alkali, salt, greasy dirt, organic matter etc.)
The characteristics such as polluter difficulty.The all places about more than 200 of rejected well drilling liquid caused by the annual drilling well in China oil field, if be stored in for a long time
In the drilling fluid pot of well site or inevitable ground contamination surrounding environment and water source are understood in directly discharge, jeopardize the existence of the mankind, or even sternly
Heavily contaminated land occupation prevents it to be lain waste from second ploughing.Therefore, caused rejected well drilling liquid need to be located in time in oilfield development process
Reason.
The main processing ways of rejected well drilling liquid are complexing, consolidation drilling waste mud at present, averagely per square processing cost 500
Member or so, it is costly, though these methods can effectively handle rejected well drilling liquid, it is not inherently eliminated the hidden of environmental pollution
Suffer from, and waste is caused to available resources.Discarded therefore, Chinese patent literature CN205618115U discloses a kind of drilling fluid
Thing concentrate environment-friendly treatment method, its be by rejected well drilling liquid by vibratory sieve or respectively through vibratory sieve and deaerator, desander, remove
For the solid waste obtained after mud device and centrifuge processing successively after de- steady, the separation of solid and liquid processing of broken glue, solid phase concentrates outward transport, liquid
Mutually used after the reverse osmosis advanced processing mechanism processing of filtrate as drilling fluid reclamation liquid.The handling process is employed to discarded brill
Demulsifier is added in well liquid, by chemical action, is aided with other separate modes and reaches the de- steady, demulsification of emulsion, realize oil breast point
From purpose, but due to adding chemical addition agent, not only increase cost, and the performance meeting of the drilling fluid of recycling
Degradation failure is simultaneously abandoned eventually, so as to also bring new environmental problem.If rejected well drilling liquid physical method can simply be located
Blocking agent injection stratum is directly prepared into after reason, then had both reduced the expense of processing, does not produce new environmental pollution, and can suppresses injection
The water breakthrough of water, water flooding effectiveness is effectively improved, realized " turning waste into wealth ", to promoting the production of oil field green low-carbon that there is weight
Want meaning.
The content of the invention
Therefore, the technical problem to be solved in the present invention be to overcome present in existing waste drilling fluids disposal method into
Hydraulic performance decline and the defects of pollution environment after this height, recovery, so as to provide a kind of pass through the letter of rejected well drilling liquid physical method
Blocking agent is directly prepared into reduce the processing cost of rejected well drilling liquid, improve its performance and environmental pollution can be overcome after single processing
Rejected well drilling liquid harmless treatment process and device.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of blocking agent, its raw material, which forms, includes rejected well drilling liquid and auxiliary agent, the grain of the Solid content in the rejected well drilling liquid
Footpath is no more than 500 mesh.
Preferably, the mass ratio of the rejected well drilling liquid and the auxiliary agent is 5~15.
Preferably, the auxiliary agent is one kind in stabilizer, dispersant, suspending agent, crosslinking agent, thickener, retarder
It is or a variety of.
Preferably, counted using the quality of the rejected well drilling liquid as 100%, the stabilizer, dispersant, the matter of thickener
It is respectively 0.05~1%, 0.05~0.25%, 0.05~0.2% to measure accounting
It is further preferred that
The stabilizer is the one or more such as sodium carbonate, sodium hydroxide, small molecule amine；
The dispersant is lignosulfonates, fluosilicic thinner, the one or more of silicate；
The crosslinking agent is phenolic resin, Lauxite, the one or more of organic amine-lactic acid chromium；
The thickener is high viscous CMC, high adhesive aggregation anionic cellulose, the one or more of starch；
The retarder is citric acid, sodium gluconate, the one or more of carboxymethyl cellulose.
A kind of rejected well drilling liquid harmless treatment process, comprises the following steps：
Rejected well drilling liquid is carried out except solid processing, so that wherein the particle diameter of Solid content is no more than 500 mesh；
Rejected well drilling liquid after removing admittedly is mixed with auxiliary agent, blocking agent is made.
Preferably, the mass ratio of the rejected well drilling liquid and the auxiliary agent is 5~15.
Preferably, the auxiliary agent is the one or more in stabilizer, dispersant, crosslinking agent, thickener, retarder.
Preferably, counted using the quality of the rejected well drilling liquid as 100%, the stabilizer, dispersant, the matter of thickener
It is respectively 0.05~1%, 0.05~0.25%, 0.05~0.2% to measure accounting.
It is further preferred that
The stabilizer is the one or more such as sodium carbonate, sodium hydroxide, small molecule amine；
The dispersant is lignosulfonates, fluosilicic thinner, the one or more of silicate；
The crosslinking agent is phenolic resin, Lauxite, the one or more of organic amine-lactic acid chromium；
The thickener is high viscous CMC, high adhesive aggregation anionic cellulose, the one or more of starch；
The retarder is citric acid, sodium gluconate, the one or more of carboxymethyl cellulose.
Preferably, described the step of removing processing admittedly, includes two-stage separation of solid and liquid, wherein liquid obtained by first order separation of solid and liquid
The particle diameter of solid content in phase is no more than 50 mesh.
Preferably, in addition to by the solid phase except obtained by solid processing step the step of being used as sealing slug.
A kind of rejected well drilling liquid harmless treatment device, including,
Skid and the solid-liquid separation unit being slidably disposed on the skid and mixing unit, the solid-liquid point
Leakage fluid dram from unit is connected with the mixing unit.
Preferably, the solid-liquid separation unit includes at least two-stage vibration sieve, bulky grain holding vessel and waste liquid tank, wherein
The solid-phase outlet of primary vibration sieve is connected with the bulky grain holding vessel, liquid-phase outlet and the secondary vibration sieve of primary vibration sieve
Charging aperture connects；The solid-phase outlet of the secondary vibration sieve connects the bulky grain holding vessel, the liquid phase of the secondary vibration sieve
Outlet connects the waste liquid tank.
Preferably, the sieve aperture of the primary vibration sieve is 50~150 mesh；The sieve aperture of secondary vibration sieve for 500~
1000 mesh.
Preferably, the solid-liquid separation unit also includes rejected well drilling liquid storage pool and feeding device, the discarded brill
Well liquid storage pool is connected by the first Transmission system with the feeding device；The feeding device connects the primary vibration sieve.
Preferably, the unit that mixes includes agitator tank and auxiliary agent adding apparatus that connection is set, the stirring
Tank is connected by the second Transmission system with the waste liquid tank.
Preferably, the mixing unit also includes high-pressure water pipe, the agitator tank and the auxiliary agent adding apparatus
Connected by the high-pressure water pipe.
Preferably, the discharging opening of the agitator tank is connected by the 3rd Transmission system with well head.
More there is choosing, first Transmission system, the second Transmission system and the 3rd Transmission system are high-pressure pump.
Rejected well drilling liquid harmless treatment process described above or described rejected well drilling liquid harmless treatment device exist
Application in rejected well drilling liquid recycling, oilwell water shutoff or drilling leakage blockage.
Technical solution of the present invention, have the following advantages that：
1. rejected well drilling liquid harmless treatment process provided by the invention include by rejected well drilling liquid carry out except solid processing with
The particle diameter of wherein Solid content is no more than 500 mesh and the rejected well drilling liquid after removing admittedly is mixed to the step of blocking agent with auxiliary agent
Suddenly, except in solid processing step without add demulsifier into rejected well drilling liquid, but with directly being made after physical method simple process
Stratum is injected into blocking agent, had both reduced the expense of processing, does not produce new environmental pollution, and can suppresses the water breakthrough of injection water, had
Water flooding effectiveness is improved to effect, is realized " turning waste into wealth ", to promoting green low-carbon production in oil field significant.
2. the invention provides the device of waste liquid drilling fluid harmless treatment, described device includes solid-liquid separation unit and mixed
Agitating unit is closed, the solid-liquid separation unit carries out physical treatment to rejected well drilling liquid, and solid bulky grain is sent into bulky grain storage
Tank, in order to be used as well site sealing slug, fine particle and liquid feeding mixing unit are prepared into blocking agent and pass through pump
Inject well head.Described device is skid structure, detachably, and it is easy to connect rapid, it is possible to achieve the pretreatment of rejected well drilling liquid
And adjust and block up, reduce the processing cost of rejected well drilling liquid, avoid environmental pollution, while blocking agent made from utilization is entered to oil-water well
Row is stifled to be adjusted, and is advantageous to improve recovery ratio.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of rejected well drilling liquid harmless treatment device of the present invention；
Fig. 2 is the well location map for simulating well LPP1-46.
Reference：
1- rejected well drilling liquid storage pools；The Transmission systems of 2- first；3- feeding devices；4- primary vibrations sieve；5- primary vibrations
The solid-phase outlet of sieve；The liquid-phase outlet of 6- primary vibrations sieve；7- secondary vibrations are sieved；The solid-phase outlet of 8- secondary vibrations sieve；9- bis-
The liquid-phase outlet of level vibratory sieve；10- bulky grain holding vessels；11- waste liquid tanks；The Transmission systems of 12- second；13- agitator tanks；14- is helped
Agent feeding device；15- discharging openings；The Transmission systems of 16- the 3rd；17- well heads；18- high-pressure water pipes.
Embodiment
Technical scheme will be clearly and completely described below, it is clear that described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to the scope of protection of the invention.In addition, below
As long as it is mutual not form conflict can each other for involved technical characteristic in described different embodiments of the present invention
With reference to.
Embodiment 1
A kind of rejected well drilling liquid harmless treatment process, comprises the following steps：
S1, the rejected well drilling liquid being stored in rejected well drilling liquid storage pool 1 enter one after being sent into feeding device 3 by pump 2
Level vibratory sieve 4；The sieve aperture of the primary vibration sieve 4 is 50 mesh, and gained solid is sent into bulky grain holding vessel 10, gained liquid portion
Into secondary vibration sieve 7；The sieve aperture of the secondary vibration sieve 7 is 500 mesh, and gained solid is sent into bulky grain holding vessel 10 and is used as envelope
Mouth slug, gained liquid portion enter waste liquid tank 9；
Waste liquid in S2, waste liquid tank 9 is sent into agitator tank 13 by pump 12, and auxiliary agent passes through auxiliary agent in the presence of water under high pressure
The note agitator tank 13 of feeding device 14, the blocking agent is produced after stirring 20min；
S3, the blocking agent are directly injected into underground by pump 16.
In the present embodiment, the mass ratio of the rejected well drilling liquid and the auxiliary agent is 5:1, the composition of the auxiliary agent is：
Na2CO30.05wt%, Na2SiO30.05wt%, phenolic resin 0.08wt%, starch 0.2wt%, sodium gluconate 0.1wt%.
Embodiment 2
A kind of rejected well drilling liquid harmless treatment process, comprises the following steps：
S1, the rejected well drilling liquid being stored in rejected well drilling liquid storage pool 1 enter one after being sent into feeding device 3 by pump 2
Level vibratory sieve 4；The sieve aperture of the primary vibration sieve 4 is 100 mesh, and gained solid is sent into bulky grain holding vessel 10, gained liquid portion
Divide and enter secondary vibration sieve 7；The sieve aperture of the secondary vibration sieve 7 is 800 mesh, and gained solid is sent into bulky grain holding vessel 10 and is used as
Slug is sealed, gained liquid portion enters waste liquid tank 9；
Waste liquid in S2, waste liquid tank 9 is sent into agitator tank 13 by pump 12, and auxiliary agent passes through auxiliary agent in the presence of water under high pressure
The note agitator tank 13 of feeding device 14, the blocking agent is produced after stirring 25min；
S3, the blocking agent are directly injected into underground by pump 16.
In the present embodiment, the mass ratio of the rejected well drilling liquid and the auxiliary agent is 10:1, the composition of the auxiliary agent is：
NaOH 0.5wt%, sodium lignin sulfonate 0.1wt%, Lauxite 0.1wt%, sodium carboxymethylcellulose 0.1wt%, citric acid
0.05wt%.
Embodiment 3
A kind of rejected well drilling liquid harmless treatment process, comprises the following steps：
S1, the rejected well drilling liquid being stored in rejected well drilling liquid storage pool 1 enter one after being sent into feeding device 3 by pump 2
Level vibratory sieve 4；The sieve aperture of the primary vibration sieve 4 is 150 mesh, and gained solid is sent into bulky grain holding vessel 10, gained liquid portion
Divide and enter secondary vibration sieve 7；The sieve aperture of the secondary vibration sieve 7 is 1000 mesh, and gained solid is sent into bulky grain holding vessel 10 and used
Make sealing slug, gained liquid portion enters waste liquid tank 9；
Waste liquid in S2, waste liquid tank 9 is sent into agitator tank 13 by pump 12, and auxiliary agent passes through auxiliary agent in the presence of water under high pressure
The note agitator tank 13 of feeding device 14, the blocking agent is produced after stirring 28min；
S3, the blocking agent are directly injected into underground by pump 16.
In the present embodiment, the mass ratio of the rejected well drilling liquid and the auxiliary agent is 15:1, the composition of the auxiliary agent is：1,
2- cyclohexanediamine 0.05wt%, Perfluoropolyether amide sodium sulfonate heavy crude thinner ANF 0.25wt%, phenolic resin 0.08wt%,
Polyanion cellulose 0.05wt%, carboxymethyl cellulose 0.1wt%.
Embodiment 4
A kind of rejected well drilling liquid harmless treatment process, comprises the following steps：
S1, the rejected well drilling liquid being stored in rejected well drilling liquid storage pool 1 enter one after being sent into feeding device 3 by pump 2
Level vibratory sieve 4；The sieve aperture of the primary vibration sieve 4 is 150 mesh, and gained solid is sent into bulky grain holding vessel 10, gained liquid portion
Divide and enter secondary vibration sieve 7；The sieve aperture of the secondary vibration sieve 7 is 1000 mesh, and gained solid is sent into bulky grain holding vessel 10 and used
Make sealing slug, gained liquid portion enters waste liquid tank 9；
Waste liquid in S2, waste liquid tank 9 is sent into agitator tank 13 by pump 12, and auxiliary agent passes through auxiliary agent in the presence of water under high pressure
The note agitator tank 13 of feeding device 14, the blocking agent is produced after stirring 22min；
S3, the blocking agent are directly injected into underground by pump 16.
In the present embodiment, the mass ratio of the rejected well drilling liquid and the auxiliary agent is 10:1, the composition of the auxiliary agent is：
Na2CO31wt%, potassium silicate 0.2wt%, starch 0.1wt%.
Embodiment 5
Rejected well drilling liquid harmless treatment device as shown in Figure 1, including skid and it is slidably disposed in the skid
On solid-liquid separation unit and mix unit.
The solid-liquid separation unit includes rejected well drilling liquid storage pool 1, feeding device 3, primary vibration sieve 4 and secondary vibration
Sieve 5, bulky grain holding vessel 10 and waste liquid tank 11, the rejected well drilling liquid storage pool 1 pass through high-pressure pump 2 and the feeding device 3
Connection；The feeding device 3 connects the primary vibration sieve 4；The solid-phase outlet 5 of the primary vibration sieve is stored up with the bulky grain
Deposit tank 10 to connect, the liquid-phase outlet 6 of primary vibration sieve is connected with secondary vibration sieve 5；The solid-phase outlet 8 of the secondary vibration sieve connects
The bulky grain holding vessel 10 is connect, the liquid-phase outlet 9 of the secondary vibration sieve connects the waste liquid tank 11.
In the present embodiment, the sieve aperture of the primary vibration sieve is 100 mesh, and the sieve aperture of the secondary vibration sieve is 800 mesh.
The unit that mixes includes agitator tank 13, auxiliary agent adding apparatus 14 and high-pressure water pipe 18 that connection is set, institute
Agitator tank 13 is stated to connect with the waste liquid tank 11 by the second Transmission system 12；The agitator tank 13 and the auxiliary agent adding apparatus
14 are connected by the pump 18；The discharging opening 15 of the agitator tank 13 is connected by pump 16 with well head 17.
The operation principle of the rejected well drilling liquid harmless treatment device of the present invention is as follows：
Rejected well drilling liquid in the rejected well drilling liquid storage pool 1 is sent into the primary vibration sieve 4 by pump 2.By described
The solid bulky grain that primary vibration sieve 4 is separated is sent into the bulky grain holding vessel 10, and remaining is sent into the secondary vibration
In sieve 7.The bulky grain holding vessel 10 is equally sent into by the bulky grain after the filtering of secondary vibration sieve 7, in order to as well
Field sealing slug is used, and waste liquid and fine particle are sent into the waste liquid tank 11.Waste liquid in the waste liquid tank 11 passes through pump 12
It is pumped into agitator tank 13, various auxiliary agents is added by additive feeding device 14, by under the injection well of pump 16 after stirs.
The rejected well drilling liquid harmless treatment device of the present embodiment is used without adding demulsifier into rejected well drilling liquid
Blocking agent injection stratum is directly prepared into after physical method simple process rejected well drilling liquid.
Above-described embodiment is the preferable implementation of the present invention, and in addition, the present invention can be realized with other modes,
Such as：Form and connected using the mode such as lock, screw thread, spline between each component of described device or grafting, to realize the device
Convenient installation or removal.
The device of the present invention is established according to the demand of Oil Field, is solved annual Shengli Oil Field and is played new well generation
The problem of a few all places dumping mud treatment difficulties, discarded slurry pollution surrounding environment, underground water source and shared soil are avoided, together
The average processing costs per 500 yuan or so of side of Shi Jieyue, the purposes of " turn waste into wealth " is realized again.Discarded slurry is injected into ground
Layer, both reduces processing cost, and and can suppresses injection water water breakthrough, is effectively improved water flooding effectiveness, meets field application demand.
Experimental example 1
Below by taking lonely southern 2-X701 wells rejected well drilling liquid as an example, it is made into blocking agent and applied to LPP1-46 simulation wells, leads to
The creation data of the simulation well is crossed to illustrate the rejected well drilling liquid harmless treatment process of the present invention and device in profile control construction
Effect.
The solid content of lonely southern 2-X701 wells rejected well drilling liquid is 24.14%, density 1.284g/cm3, pH value is
10.739, viscosity 200mPa.s, 32.1 μm of median grain diameter.LPP1-46 well locations are in facing the unit of disk oil recovery list price one, the sand three of disk 1
Lower mean permeability 204.2 × 10-3um2, 75 DEG C, strata pressure 16.9MPa of prime stratum temperature, formation water salinity
40000-50000mg/L, hypotonic, high salinity reservoir in category, the lower wall top structural map of one block of sand of which disk three is see Fig. 2.
After lonely southern 2-X701 wells finishing drilling, the device that is provided using embodiment 5 and according to the technique described in embodiment 1 to Gu Nan
The rejected well drilling liquid of 2-X701 wells is handled, and obtained blocking agent is injected into simulation underground, coarse granule is as sealing slug injection.
After the completion of profile control construction, lonely southern 2-X701 well pressures are improved and pressure decline becomes slow, and water content is decreased obviously, and shows Gu Nan
The profile control of 2-X701 wells is very effective.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (21)
1. a kind of blocking agent, it is characterised in that its raw material, which forms, includes rejected well drilling liquid and auxiliary agent, consolidating in the rejected well drilling liquid
The particle diameter of inclusion is no more than 500 mesh.
2. blocking agent according to claim 1, it is characterised in that the mass ratio of the rejected well drilling liquid and the auxiliary agent is 5
~15.
3. blocking agent according to claim 1 or 2, it is characterised in that the auxiliary agent is stabilizer, dispersant, crosslinking agent, increasing
Thick dose, the one or more in retarder.
4. blocking agent according to claim 3, it is characterised in that counted using the quality of the rejected well drilling liquid as 100%, it is described
Stabilizer, dispersant, the quality accounting of thickener are respectively 0.05~1%, 0.05~0.25%, 0.05~0.2%.
5. the blocking agent according to claim 3 or 4, it is characterised in that
The stabilizer is the one or more such as sodium carbonate, sodium hydroxide, small molecule amine；
The dispersant is lignosulfonates, fluosilicic thinner, the one or more of silicate；
The crosslinking agent is phenolic resin, Lauxite, the one or more of organic amine-lactic acid chromium；
The thickener is high viscous CMC, high adhesive aggregation anionic cellulose, the one or more of starch；
The retarder is citric acid, sodium gluconate, the one or more of carboxymethyl cellulose.
6. a kind of rejected well drilling liquid harmless treatment process, it is characterised in that comprise the following steps：
Rejected well drilling liquid is carried out except solid processing, so that wherein the particle diameter of Solid content is no more than 500 mesh；
Rejected well drilling liquid after removing admittedly is mixed with auxiliary agent, blocking agent is made.
7. rejected well drilling liquid harmless treatment process according to claim 6, it is characterised in that the rejected well drilling liquid with
The mass ratio of the auxiliary agent is 5~15.
8. the rejected well drilling liquid harmless treatment process according to claim 6 or 7, it is characterised in that the auxiliary agent is steady
Determine the one or more in agent, dispersant, crosslinking agent, thickener, retarder.
9. rejected well drilling liquid harmless treatment process according to claim 8, it is characterised in that with the rejected well drilling liquid
Quality be 100% meter, the stabilizer, dispersant, the quality accounting of thickener be respectively 0.05~1%, 0.05~
0.25%th, 0.05~0.2%.
10. rejected well drilling liquid harmless treatment process according to claim 8 or claim 9, it is characterised in that
The stabilizer is the one or more such as sodium carbonate, sodium hydroxide, small molecule amine；
The dispersant is lignosulfonates, fluosilicic thinner, the one or more of silicate；
The crosslinking agent is phenolic resin, Lauxite, the one or more of organic amine-lactic acid chromium；
The thickener is high viscous CMC, high adhesive aggregation anionic cellulose, the one or more of starch；
The retarder is citric acid, sodium gluconate, the one or more of carboxymethyl cellulose.
11. according to the rejected well drilling liquid harmless treatment process described in claim any one of 6-10, it is characterised in that described to remove
Admittedly the step of processing includes two-stage separation of solid and liquid, the particle diameter of the wherein solid content in liquid phase obtained by first order separation of solid and liquid is no more than
50 mesh.
12. according to the rejected well drilling liquid harmless treatment process described in claim any one of 6-11, it is characterised in that also include
The step of solid phase except obtained by solid processing step is used as sealing slug.
A kind of 13. rejected well drilling liquid harmless treatment device, it is characterised in that including,
Skid and the solid-liquid separation unit being slidably disposed on the skid and mixing unit, the separation of solid and liquid list
The leakage fluid dram of member is connected with the mixing unit.
14. rejected well drilling liquid harmless treatment device according to claim 13, it is characterised in that the separation of solid and liquid list
Member includes the solid-phase outlet (5) of at least two-stage vibration sieve, bulky grain holding vessel (10) and waste liquid tank (11), wherein primary vibration sieve
It is connected with the bulky grain holding vessel (10), the liquid-phase outlet (6) of primary vibration sieve is connected with secondary vibration sieve (7)；Described two
The solid-phase outlet (8) of level vibratory sieve connects the bulky grain holding vessel (10), liquid-phase outlet (9) connection of the secondary vibration sieve
The waste liquid tank (11).
15. rejected well drilling liquid harmless treatment device according to claim 14, it is characterised in that the primary vibration sieve
Sieve aperture be 50~150 mesh；The sieve aperture of the secondary vibration sieve is 500~1000 mesh.
16. rejected well drilling liquid harmless treatment device according to claim 13, it is characterised in that the separation of solid and liquid list
Member also includes rejected well drilling liquid storage pool (1) and feeding device (3), and the rejected well drilling liquid storage pool (1) passes through the first transmission
System (2) connects with the feeding device (3)；The feeding device (3) connects the primary vibration sieve (4).
17. according to the rejected well drilling liquid harmless treatment device described in claim any one of 13-16, it is characterised in that described
Mixing unit includes agitator tank (13) and auxiliary agent adding apparatus (14) that connection is set, and the agitator tank (13) passes through second
Transmission system (12) connects with the waste liquid tank (11).
18. rejected well drilling liquid harmless treatment device according to claim 17, it is characterised in that described to mix list
Member also includes high-pressure water pipe (18), and the agitator tank (13) passes through the high-pressure water pipe (18) with the auxiliary agent adding apparatus (14)
Connection.
19. the rejected well drilling liquid harmless treatment device according to claim 17 or 18, it is characterised in that the agitator tank
(13) discharging opening (15) is connected by the 3rd Transmission system (16) with well head (17).
20. according to the rejected well drilling liquid harmless treatment device described in claim any one of 13-19, it is characterised in that described
First Transmission system (2), the second Transmission system (12) and the 3rd Transmission system (16) are high-pressure pump.
21. any one of rejected well drilling liquid harmless treatment process or claim 13-20 described in claim any one of 6-12
Described rejected well drilling liquid harmless treatment device answering in rejected well drilling liquid recycling, oilwell water shutoff or drilling leakage blockage
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711096481.0A CN107794016A (en) | 2017-11-09 | 2017-11-09 | A kind of rejected well drilling liquid harmless treatment process and device |
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| CN201711096481.0A CN107794016A (en) | 2017-11-09 | 2017-11-09 | A kind of rejected well drilling liquid harmless treatment process and device |
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Cited By (1)
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