CN116177582A - Method for preparing superfine calcium carbonate by utilizing treatment process of oilfield operation waste liquid - Google Patents
Method for preparing superfine calcium carbonate by utilizing treatment process of oilfield operation waste liquid Download PDFInfo
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- CN116177582A CN116177582A CN202111448470.0A CN202111448470A CN116177582A CN 116177582 A CN116177582 A CN 116177582A CN 202111448470 A CN202111448470 A CN 202111448470A CN 116177582 A CN116177582 A CN 116177582A
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- CN
- China
- Prior art keywords
- calcium carbonate
- waste liquid
- treatment process
- auxiliary agent
- sodium carbonate
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 152
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 76
- 239000002699 waste material Substances 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 59
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 72
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 43
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 36
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000013078 crystal Substances 0.000 claims abstract description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 32
- LKVOBFOKXFEIKY-UHFFFAOYSA-N acetic acid;2,3-dihydroxypropanoic acid Chemical compound CC(O)=O.OCC(O)C(O)=O LKVOBFOKXFEIKY-UHFFFAOYSA-N 0.000 claims description 13
- 229920001577 copolymer Polymers 0.000 claims description 12
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims description 11
- 229940047670 sodium acrylate Drugs 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 11
- 238000005553 drilling Methods 0.000 abstract description 10
- 239000012535 impurity Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000005476 size effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000012767 functional filler Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a method for preparing superfine calcium carbonate by utilizing the treatment process of oilfield operation waste liquid, which is implemented according to the following steps: step 1, adding sodium carbonate into the front end of biochemical treatment in the treatment process of the operation waste liquid to carry out hard removal treatment; step 2, adding an auxiliary agent into the waste liquid added with sodium carbonate to promote the generation of calcium carbonate crystals; and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is separated out, and drying under vacuum conditions to obtain superfine calcium carbonate particles. The superfine calcium carbonate finally prepared by the invention can be used as a plugging material in the oilfield drilling process, fully utilizes resources and changes waste into valuable.
Description
Technical Field
The invention belongs to the technical field of superfine calcium carbonate preparation methods, and particularly relates to a method for preparing superfine calcium carbonate by utilizing an oilfield operation waste liquid treatment process.
Background
In the treatment process of waste liquid in oilfield operation, sodium carbonate and the like are often added at the front end of biochemical treatment to carry out waste water hardening treatment in order to enable the subsequent biochemical treatment process section to run stably. However, at present, the solid impurities with high calcium carbonate content after the hardening removal are not subjected to advanced treatment or reasonable utilization, and are treated as common solid waste, so that great waste is generated on the resources of the calcium carbonate.
The common calcium carbonate has the advantages of low price, no color, no smell, no irritation, stable chemical property, easy drying, small interference to other colors, easy coloring, large filling amount and the like, and is generally used in industries such as food additives, building industry, papermaking industry, paint, printing ink and the like. The superfine calcium carbonate is calcium carbonate with primary particle size of 0.2-0.1 μm, which is developed in Japanese, and has special quantum size effect, small size effect and surface effect, so that the superfine calcium carbonate has obvious advantages in reinforcing property, transparency, dispersivity, thixotropic property, leveling property and other aspects compared with conventional powder materials, especially the active superfine calcium carbonate has the characteristic of functional filler, thereby greatly widening the application range of the active superfine calcium carbonate, greatly improving the toughening reinforcing effect and improving the product performance and quality of related industries.
Disclosure of Invention
The invention aims to provide a method for preparing superfine calcium carbonate by utilizing the treatment process of oilfield operation waste liquid, which can fully utilize calcium carbonate resources in oilfield waste liquid.
The technical scheme adopted by the invention is that the method for preparing the superfine calcium carbonate by utilizing the treatment process of the waste liquid of the oilfield operation is implemented according to the following steps:
step 1, adding sodium carbonate into the front end of biochemical treatment in the treatment process of the operation waste liquid to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with sodium carbonate to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is separated out, and drying under vacuum conditions to obtain superfine calcium carbonate particles.
The present invention is also characterized in that,
in the step 1, sodium carbonate is sodium carbonate solution.
The adding amount of the sodium carbonate solution is 500-1000 mg of sodium carbonate added into each liter of waste liquid.
The step 2 auxiliary agent is composed of one or more of ethylene glycol, sodium acrylate, glycerate acetate and acrylic acid vinyl pyridine copolymer.
When the auxiliary agent is formed by a plurality of components, the component proportion is glycol: sodium acrylate: glyceric acid acetate: vinyl pyridine acrylate copolymer = 4-8: 1 to 4:2 to 5:2 to 5.
In the step 2, the addition ratio of the auxiliary agent is 100-300 mg of the auxiliary agent per liter of waste liquid.
Filtration is performed in step 3 using a nanofiltration device.
The drying temperature in the step 3 is 105-110 ℃.
The invention has the advantages that,
(1) The superfine calcium carbonate finally prepared by the invention can be used as a plugging material in the oilfield drilling process, fully utilizes resources and changes waste into valuable;
(2) Solves the problem of the removal of solid impurities from the hard removal section in the treatment process of the operation waste liquid, belongs to the environment-friendly comprehensive utilization, and solves the problem of pollution to the environment;
(3) Thoroughly solves the scaling problem of equipment and pipelines after the autogenous treatment in the treatment process of the operation waste liquid, and lays a foundation for the stable operation of the treatment process of the operation waste liquid of the oil-gas field;
(4) The preparation method of the superfine calcium carbonate has the advantages of simple process and easy realization of field industrial application.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention relates to a method for preparing superfine calcium carbonate by utilizing the treatment process of oilfield operation waste liquid, which is implemented according to the following steps:
step 1, adding sodium carbonate solution into the front end of biochemical treatment in the treatment process of the operation waste liquid through a dosing pump to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with the sodium carbonate solution to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is reacted and separated out, and drying under vacuum to obtain superfine calcium carbonate particles, wherein the superfine calcium carbonate particles can be used as plugging materials in the oilfield drilling process.
Specifically, in the step 1, sodium carbonate with the content of 500-1000 mg is added into each liter of waste liquid; the auxiliary agent in the step 2 is composed of one or more of ethylene glycol, sodium acrylate, glycerate acetate and acrylic acid vinyl pyridine copolymer; the auxiliary agent comprises the following components in proportion: ethylene glycol: sodium acrylate: glyceric acid acetate: vinyl pyridine acrylate copolymer = 4-8: 1 to 4:2 to 5:2 to 5; the proportion of the auxiliary agent added into the waste liquid is 100-300 mg of auxiliary agent added into each liter of waste liquid; filtering in the step 3 to obtain a nano filter; the drying temperature is 105-110 ℃ under the vacuum condition.
The invention solves the problem of removing solid impurities from the hard segment in the treatment process of the waste liquid of the oil field operation, thoroughly solves the problem of scaling of equipment and pipelines after autogenous treatment in the treatment process of the waste liquid of the oil field operation, lays a foundation for the stable operation of the treatment process of the waste liquid of the oil and gas field operation, and the prepared superfine calcium carbonate can be used as a plugging material in the drilling process of the oil field, fully utilizes resources, has simple preparation process and is easy to realize in-situ industrial application.
Example 1
Step 1, adding sodium carbonate solution into the front end of biochemical treatment in the treatment process of the operation waste liquid through a dosing pump to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with the sodium carbonate solution to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is reacted and separated out, and drying under vacuum to obtain superfine calcium carbonate particles, wherein the superfine calcium carbonate particles can be used as plugging materials in the oilfield drilling process.
Specifically, in the step 1, sodium carbonate is added in an amount of 500mg per liter of waste liquid; in the step 2, the auxiliary agent is composed of ethylene glycol; the proportion of the auxiliary agent added into the waste liquid is that 100mg of auxiliary agent is added into each liter of waste liquid; filtering in the step 3 to obtain a nano filter; the drying temperature under vacuum was 105 ℃.
Example 2
Step 1, adding sodium carbonate solution into the front end of biochemical treatment in the treatment process of the operation waste liquid through a dosing pump to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with the sodium carbonate solution to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is reacted and separated out, and drying under vacuum to obtain superfine calcium carbonate particles, wherein the superfine calcium carbonate particles can be used as plugging materials in the oilfield drilling process.
Specifically, in the step 1, sodium carbonate is added in an amount of 1000mg per liter of waste liquid; in the step 2, the auxiliary agent consists of sodium acrylate; the proportion of the auxiliary agent added into the waste liquid is 300mg of auxiliary agent added into each liter of waste liquid; filtering in the step 3 to obtain a nano filter; the drying temperature under vacuum was 110 ℃.
Example 3
Step 1, adding sodium carbonate solution into the front end of biochemical treatment in the treatment process of the operation waste liquid through a dosing pump to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with the sodium carbonate solution to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is reacted and separated out, and drying under vacuum to obtain superfine calcium carbonate particles, wherein the superfine calcium carbonate particles can be used as plugging materials in the oilfield drilling process.
Specifically, in the step 1, sodium carbonate is added in an amount of 800mg per liter of waste liquid; in the step 2, the auxiliary agent consists of glycerate acetate; the proportion of the auxiliary agent added into the waste liquid is 150mg of auxiliary agent added into each liter of waste liquid; filtering in the step 3 to obtain a nano filter; the drying temperature under vacuum was 108 ℃.
Example 4
Step 1, adding sodium carbonate solution into the front end of biochemical treatment in the treatment process of the operation waste liquid through a dosing pump to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with the sodium carbonate solution to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is reacted and separated out, and drying under vacuum to obtain superfine calcium carbonate particles, wherein the superfine calcium carbonate particles can be used as plugging materials in the oilfield drilling process.
Specifically, in the step 1, sodium carbonate is added into the waste liquid with the content of 600mg per liter; the auxiliary agent in the step 2 consists of glycerate acetate and acrylic acid vinyl pyridine copolymer; the auxiliary agent comprises the following components in percentage by weight: glyceric acid acetate: vinyl pyridine acrylate copolymer = 2:3, a step of; the proportion of the auxiliary agent added into the waste liquid is 160mg of auxiliary agent added into each liter of waste liquid; filtering in the step 3 to obtain a nano filter; the drying temperature under vacuum was 107 ℃.
Example 5
Step 1, adding sodium carbonate solution into the front end of biochemical treatment in the treatment process of the operation waste liquid through a dosing pump to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with the sodium carbonate solution to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is reacted and separated out, and drying under vacuum to obtain superfine calcium carbonate particles, wherein the superfine calcium carbonate particles can be used as plugging materials in the oilfield drilling process.
Specifically, in the step 1, the sodium carbonate is added in an amount of 650mg per liter of waste liquid; the auxiliary agent in the step 2 consists of ethylene glycol, sodium acrylate, glycerate acetate and acrylic acid vinyl pyridine copolymer; the auxiliary agent comprises the following components in percentage by weight: ethylene glycol: sodium acrylate: glyceric acid acetate: vinyl pyridine acrylate copolymer = 4:1:2:2; the proportion of the auxiliary agent added into the waste liquid is 120mg of auxiliary agent added into each liter of waste liquid; filtering in the step 3 to obtain a nano filter; the drying temperature under vacuum was 109 ℃.
Example 6
Step 1, adding sodium carbonate solution into the front end of biochemical treatment in the treatment process of the operation waste liquid through a dosing pump to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with the sodium carbonate solution to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is reacted and separated out, and drying under vacuum to obtain superfine calcium carbonate particles, wherein the superfine calcium carbonate particles can be used as plugging materials in the oilfield drilling process.
Specifically, in the step 1, sodium carbonate is added into the waste liquid with the content of 750mg per liter; the auxiliary agent in the step 2 consists of ethylene glycol, sodium acrylate, glycerate acetate and acrylic acid vinyl pyridine copolymer; the auxiliary agent comprises the following components in percentage by weight: ethylene glycol: sodium acrylate: glyceric acid acetate: vinyl pyridine acrylate copolymer = 8:4:5:5, a step of; the proportion of the auxiliary agent added into the waste liquid is 130mg of auxiliary agent added into each liter of waste liquid; filtering in the step 3 to obtain a nano filter; the drying temperature under vacuum was 106 ℃.
Claims (8)
1. The method for preparing the superfine calcium carbonate by utilizing the treatment process of the oilfield operation waste liquid is characterized by comprising the following steps of:
step 1, adding sodium carbonate into the front end of biochemical treatment in the treatment process of the operation waste liquid to carry out hard removal treatment;
step 2, adding an auxiliary agent into the waste liquid added with sodium carbonate to promote the generation of calcium carbonate crystals;
and step 3, filtering the obtained calcium carbonate solution after the calcium carbonate is separated out, and drying under vacuum conditions to obtain superfine calcium carbonate particles.
2. The method for preparing superfine calcium carbonate by utilizing the oilfield operation waste liquid treatment process according to claim 1, wherein the sodium carbonate in the step 1 is sodium carbonate solution.
3. The method for preparing ultrafine calcium carbonate by using the treatment process of the waste liquid of the oilfield operation according to claim 2, wherein the sodium carbonate solution is added in an amount of 500-1000 mg of sodium carbonate per liter of waste liquid.
4. The method for preparing ultrafine calcium carbonate by using the oilfield operation waste liquid treatment process according to claim 1, wherein the step 2 auxiliary agent is composed of one or more of ethylene glycol, sodium acrylate, glycerate acetate and vinyl pyridine acrylate copolymer.
5. The method for preparing ultrafine calcium carbonate by using the oilfield operation waste liquid treatment process according to claim 4, wherein when the auxiliary agent has various compositions, the composition ratio is ethylene glycol: sodium acrylate: glyceric acid acetate: vinyl pyridine acrylate copolymer = 4-8: 1 to 4:2 to 5:2 to 5.
6. The method for preparing superfine calcium carbonate by utilizing the oilfield operation waste liquid treatment process according to claim 1, wherein the addition ratio of the auxiliary agent in the step 2 is 100-300 mg of the auxiliary agent per liter of waste liquid.
7. The method for preparing ultrafine calcium carbonate by using the oilfield operation waste liquid treatment process according to claim 1, wherein the step 3 is performed by filtering with a nano filter.
8. The method for preparing ultrafine calcium carbonate by using the treatment process of waste liquid of oil field operation according to claim 1, wherein the drying temperature in the step 3 is 105-110 ℃.
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| CN202111448470.0A CN116177582A (en) | 2021-11-29 | 2021-11-29 | Method for preparing superfine calcium carbonate by utilizing treatment process of oilfield operation waste liquid |
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| CN202111448470.0A CN116177582A (en) | 2021-11-29 | 2021-11-29 | Method for preparing superfine calcium carbonate by utilizing treatment process of oilfield operation waste liquid |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9719036D0 (en) * | 1996-09-11 | 1997-11-12 | You Kyu J | Process for preparing calcium carbonate |
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| CN105152198A (en) * | 2015-10-15 | 2015-12-16 | 广西民族大学 | Preparation method of flaky aragonite type superfine calcium carbonate particles |
| CN105348826A (en) * | 2015-11-07 | 2016-02-24 | 陶荣燕 | Fungacetin calcium carbonate activating agent |
| CN106315932A (en) * | 2016-08-24 | 2017-01-11 | 厦门世达膜科技有限公司 | Method for disposing wastewater from oil field |
| CN106349763A (en) * | 2016-08-22 | 2017-01-25 | 黄景诚 | Auxiliary agent for calcium carbonate powder |
| CN106398311A (en) * | 2016-08-19 | 2017-02-15 | 廖文成 | Calcium carbonate powder activator |
| CN108359274A (en) * | 2018-02-07 | 2018-08-03 | 广西大学 | Rosin derivative chelates calcium modified Nano or lightweight CaCO3Powder preparation method |
| CN109485185A (en) * | 2017-09-13 | 2019-03-19 | 中国石油天然气集团公司 | A kind of pulse electrochemical processing method and processing device of oil field operation waste liquid |
-
2021
- 2021-11-29 CN CN202111448470.0A patent/CN116177582A/en active Pending
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| CN109485185A (en) * | 2017-09-13 | 2019-03-19 | 中国石油天然气集团公司 | A kind of pulse electrochemical processing method and processing device of oil field operation waste liquid |
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