CN105672961A - Integrated profile control technology of nitrogen foams during recovery of viscous oil reservoirs - Google Patents
Integrated profile control technology of nitrogen foams during recovery of viscous oil reservoirs Download PDFInfo
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- CN105672961A CN105672961A CN201410669409.2A CN201410669409A CN105672961A CN 105672961 A CN105672961 A CN 105672961A CN 201410669409 A CN201410669409 A CN 201410669409A CN 105672961 A CN105672961 A CN 105672961A
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Abstract
The invention discloses integrated profile control technology of nitrogen foams during recovery of viscous oil reservoirs. The integrated profile control technology comprises a fixed station, a nitrogen foam generator, a nitrogen foam repetition generator, a nitrogen foam dispenser and nitrogen foam metering devices, all of which are sequentially connected.The fixed station comprises a nitrogen trolley group, a steam boiler and a foaming agent injection and skidding unit. The nitrogen trolley group, the steam boiler and the foaming agent injection and skidding unit are connected with the nitrogen foam generator. At least one nitrogen foam metering device is connected with corresponding shaft mouths. The integrated profile control technology of nitrogen foams during recovery of viscous oil reservoirs has following beneficial effects: the integrated profile control fails due to complex operation of steam-driven nitrogen foam profile control technology; the integrated profile control technology helps achieve linkage profile control of steam-driven with blocks; and development effect of steam flooding of viscous oil is improved.
Description
Technical field
The present invention relates to oil exploitation technology, specifically the integral profile control technique of nitrogen foam in a kind of production of heavy oil reservoir process.
Background technology
Heavy crude reservoir enters the many rounds of steam and handles up the later stage, and development effectiveness is deteriorated, and shows as that cycle oil offtake is low, oil gas ratio is low, comprehensive water cut height. Injecting steam sweep efficiency is low is the major cause causing above problem. Stratum nonuniformity causes steam has channeling serious jointly, and injecting steam is fled from high permeability zone, and the hyposmosis band of enrichment surplus oil is not effectively employed all the time, and this causes many rounds to be handled up the moisture increase of later stage production fluid, deleterious.
Companion's steam injection foaming agent can improve sweep efficiency and the efficiency of displacement of injecting steam. By adding foaming agent and nitrogen, duct, stratum produces foam, the foam film of high strength makes the percolation ability of gas phase sharply reduce, shutoff most permeable zone or macropore, effectively inhibit steam high permeability formation, the high section of oozing, height to ooze band, turn to low-permeability layer, hypotonic section, the non-displacement band such as hypotonic band, add displacement volume, improve sweep area, improve effect of reservoir development.
Summary of the invention
It is an object of the invention to provide the integral profile control technique of nitrogen foam in a kind of production of heavy oil reservoir process, solve steam flood nitrogen foam profile control technological operation complicated, the problem of integral profile control cannot be realized, it is achieved that the linkage profile control of steam flood block, improve the development effectiveness of thick oil steam drive.
In order to reach above-mentioned purpose, present invention employs following technical scheme, an integral profile control technique for nitrogen foam in production of heavy oil reservoir process, comprise be connected in turn fixing station, nitrogen gas foam generator, nitrogen foam repeat producer, nitrogen foam divider, nitrogen foam measuring apparatus.
Described fixing station comprises nitrogen car group, steam boiler and foaming agent and injects skid, described nitrogen car group, steam boiler and foaming agent inject skid and are all connected with nitrogen gas foam generator, and described nitrogen foam measuring apparatus at least arranges one and connects with corresponding well head.
Described nitrogen gas foam generator, comprises main pipeline and is connected respectively at the gas pipeline of main pipeline bottom end opening and top end opening, foam output channel, be provided with the porous foam medium that nitrogen foam agent can be made fully to foam in the middle part of described main pipeline;By top tube and down tube, by connecing, hoop is formed by connecting described main pipeline; Offering the chuck for being located porous foam medium inside described lower pipe upper port, chuck height is equal with the height of porous foam medium; Described lower pipe sidewall is also connected foam liquid pipeline; Described porous foam medium is a kind of device offering multiple permeability aperture; Described foam liquid pipeline, gas pipeline, foam output channel are provided with and connect hoop.
Described nitrogen foam repeats producer, comprises main pipeline and is connected respectively at the nitrogen foam agent pipeline of main pipeline bottom end opening and top end opening, foam output channel, is provided with the foam implantation that nitrogen foam agent can be made fully to foam in the middle part of described main pipeline; By top tube and down tube, by connecing, hoop is formed by connecting described main pipeline; Offering the chuck for being located foam implantation inside described lower pipe upper port, chuck height is equal with the height of foam implantation; Described lower pipe is interior and is provided with whirlpool between foam implantation and nitrogen foam agent pipeline; Described foam implantation is a kind of device offering multiple permeability aperture; Described nitrogen foam agent pipeline, foam output channel are provided with and connect hoop.
Described nitrogen foam distribution device comprises heavy sand and disturbance device, nozzle, and described heavy sand and disturbance device rear end connecting T-shaped branches, separate two branch lines by T-shaped branches, is all connected with nozzle on two branch lines.
Described nitrogen foam measuring apparatus, comprises interconnective heavy husky device, pressure ring room, and described pressure ring room also gathers indicating system with transmitter and numerical control and is connected; The described heavy husky device the other end then connecting end portion with the upper pipe connecting of front band head; Described upper pipe connecting connects steam injection pipeline incoming flow pipe line by front band head; Described pressure ring room the other end connecting end portion is with the lower pipe connecting of lower catch hoop head; Described lower pipe connecting connects downstream steam pipeline by lower catch hoop head; Described transmitter and numerical control gather indicating system and comprise differential pressure transmitter, numerical control collection indicating system, and wherein differential pressure transmitter is connected in data gathering indicating system by signal wire, and the circumferential side wall of pressure ring room is also connected to differential pressure transmitter by pressure guiding pipe.
Compared to prior art, the present invention has following useful effect:
Oil recovery profile control in the present invention pipeline repeats foam maker device, adopts nitrogen and the foaming agent of companion's steam treatment, is mainly applicable to the high-temperature zone that shutoff vapour drives between well and recovery well; Nitrogen foam has oil-water selectivity, is mainly applicable to the oil reservoir that shutoff oil saturation is less than 20%. Both nitrogen foams combine and can significantly improve super-heavy oil deposit high temperature stifled tune effect, save to block up and adjust cost. The important technical advantage of the present invention is:
1. the shutoff characteristic of nitrogen foam is combined in together, utilizes temperature field development characteristics and the oil saturation characteristic distributions of heavy crude reservoir steam flood self, force steam to turn to, thus improve steam swept volume, it is to increase recovery ratio;
2. nitrogen foam slug coordinates reduction recovery well comprehensive water cut, extends stifled tune validity period, utilizes the reduction interfacial tension effect of foaming agent, further raising steam displacement efficiency, thus reduces stifled tune cost, it is to increase super-heavy oil deposit steam flood gas oil ratio;
3. achieve the linkage profile control of steam flood block, reduce the management operating cost of steam flood nitrogen foam profile control, improve steam flood block implementation result.
Accompanying drawing explanation
Fig. 1 is the integral profile control process flow sheet of nitrogen foam in a kind of production of heavy oil reservoir process of the present invention;
Fig. 2 is nitrogen gas foam generator schematic diagram;
Fig. 3 is that nitrogen foam injects repetition foam maker schematic diagram;
Fig. 4 is nitrogen foam distribution device schematic diagram;
Fig. 5 is nitrogen foam measuring apparatus schematic diagram.
In figure: 1, foam output channel; 2, upper pipe; 3, porous foam medium; 4, lower pipe 5, foam liquid pipeline 6, gas pipeline;
21, foam output channel; 22, upper pipe; 23, foam implantation; 24, lower pipe; 25, whirlpool; 26, nitrogen foam agent pipeline;
31, front end card hoop head; 32, pipe connecting; 33, heavy sand and disturbance; 34, T-shaped branches; 35, restriction orifice; 36, rear end card hoop head;
41. front band heads; 42. pipe connectings; 43. heavy sand devices; 44. pressure ring rooms; 45. transmitters and numerical control gather indicating system; 46. lower catch hoop heads.
Embodiment
Detailed explanation for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for the present invention being limited.
As shown in Figure 1, according to flowchart configuration nitrogen foam profile control flow process, the frothing machine wherein used, repetition producer, foam-dispensing device, foam measuring apparatus should be selected to install according to counter structure figure. Set up fixing station and implement unified management, fixture comprises: nitrogen car group, steam boiler and foaming agent inject skid, nitrogen foam pipe network is installed frothing machine, repeats producer, foam-dispensing device, foam measuring apparatus, it is achieved nitrogen foam uniformly distributing injects well group to steam flood. The using method of this device comprises: step 1, sets up fixing station, installs nitrogen car group, steam boiler and foaming agent and injects skid; Step 2, connects steam injection pipe network, installs frothing machine, repeats producer, foam-dispensing device, foam measuring apparatus; Step 3, carries out nitrogen foam profile control according to design variable.
As shown in Figure 2, nitrogen gas foam generator comprises gas pipeline, foam liquid pipeline, porous, expanded medium, foam generation cavity and foam output channel, nitrogen accesses from gas pipeline, foaming agent accesses from fluid pipeline, gas and fluid pipeline there is stopping valve coutroi velocity flow, nitrogen just entered from bottom foam generation cavity time, first will through the porous foam medium 3 of multilayer, the liquid foam then accessed with left side fully contacts mixing, then along with the increase of amount of savings in generation cavity, constantly to cavity ionized motion, export eventually through foam output channel, inject well head. this device is easy and simple to handle, is easy to control, avoids and mixes uneven phenomenon generation in the earth formation, it is possible to effectively improves oil recovery factor. the using method of this oil recovery profile control pipeline foam generator comprises: step 1, opens the stopping valve of gas access conduit, leads to into gas, step 2, opens the stopping valve of foam liquid pipeline, leads to into liquid, step 3, control emergency decompression valve, the combined amount of adjustment gas and liquid, ensures that they mix, finally exports from foam output channel.
As shown in Figure 3, nitrogen foam repeats producer, comprise main pipeline and it is connected respectively at the nitrogen foam agent pipeline 26 of main pipeline bottom end opening and top end opening, foam output channel 21, in the middle part of described main pipeline, be provided with the foam implantation 23 that nitrogen foam agent can be made fully to foam. By upper pipe 22 and lower pipe 24, by connecing, hoop is formed by connecting described main pipeline. Offering the chuck for being located foam implantation inside described lower pipe upper port, chuck height is equal with the height of foam implantation. Described lower pipe is interior and is provided with whirlpool 25 between foam implantation and nitrogen foam agent pipeline.Described foam implantation is a kind of device offering multiple permeability aperture. Described nitrogen foam agent pipeline, foam output channel are provided with and connect hoop. Nitrogen foam agent enters from the hoop that connects of inlet Nitrogen gas foaming agent pipeline 21, after whirlpool mixes, fully foams on foam implantation, then connects hoop from outlet and reenter pipeline, wherein foam implantation can by dismounting implantation more changing-over hoop change. This device is easy and simple to handle, is easy to control, avoids and mixes uneven phenomenon generation in the earth formation, it is possible to effectively improves oil recovery factor. The using method of this device comprises: step 1, pipeline repeats foam device and accesses nitrogen foam profile control pipeline by correct direction; Step 2, carries out profile control according to design variable nitrogen injection foam; Step 3, dismounting foam implantation connects hoop, cleans or changes foam implantation.
As shown in Figure 4, nitrogen foam distribution device comprises front end card hoop head 31, it is connected with steam injection pipeline incoming flow pipe line, it is connected with pipe connecting 32 below, is connected with heavy sand and disturbance device 33 after pipe connecting 32, is connected with T-shaped branches 34 after heavy sand and disturbance device 33, after be divided into Liang Ge branch and connect respectively at restriction orifice 35, being connected with rear end card hoop head 36 below, then two take-off lines of two branches respectively at downstream are connected composition whole oil field ground nitrogen foam companion's note distribution device.
As shown in Figure 5, nitrogen foam measuring apparatus, front band head 41 is connected with steam injection pipeline incoming flow pipe line, it is connected with heavy sand device 43 below by pipe connecting 42, heavy sand device is connected with steam pressure ring room 44 below, ring room gathers indicating system 45 with transmitter and numerical control and is connected, and is connected with lower catch hoop head 46 below, and card hoop head is connected with downstream steam pipeline. Transmitter and numerical control gather indicating system 5, transmitter selects 1151 type differential pressure transmitters, numerical control acquisition system is the numerical control acquisition system based on ARM, and transmitter is connected in data gathering indicating system by signal wire, and the circumferential side wall of pressure ring room is connected to pressure transmitter by pressure guiding pipe.
The foregoing is only the better embodiment of the present invention, be not used to limit the patent scope of the present invention, other use the equivalence change of the patent spirit of the present invention, all should all belong to the patent scope of the present invention.
Claims (6)
1. the integral profile control technique of nitrogen foam in a production of heavy oil reservoir process, it is characterised in that, comprise the fixing station that is connected in turn, nitrogen gas foam generator, nitrogen foam repeat producer, nitrogen foam divider, nitrogen foam measuring apparatus.
2. the integral profile control technique of nitrogen foam in a kind of production of heavy oil reservoir process according to claim 1, it is characterized in that, described fixing station comprises nitrogen car group, steam boiler and foaming agent and injects skid, described nitrogen car group, steam boiler and foaming agent inject skid and are all connected with nitrogen gas foam generator, and described nitrogen foam measuring apparatus at least arranges one and connects with corresponding well head.
3. the integral profile control technique of nitrogen foam in a kind of production of heavy oil reservoir process according to claim 1, it is characterized in that, described nitrogen gas foam generator, comprise main pipeline and it is connected respectively at the gas pipeline of main pipeline bottom end opening and top end opening, foam output channel, in the middle part of described main pipeline, be provided with the porous foam medium that nitrogen foam agent can be made fully to foam; By top tube and down tube, by connecing, hoop is formed by connecting described main pipeline;Offering the chuck for being located porous foam medium inside described lower pipe upper port, chuck height is equal with the height of porous foam medium; Described lower pipe sidewall is also connected foam liquid pipeline; Described porous foam medium is a kind of device offering multiple permeability aperture; Described foam liquid pipeline, gas pipeline, foam output channel are provided with and connect hoop.
4. the integral profile control technique of nitrogen foam in a kind of production of heavy oil reservoir process according to claim 1, it is characterized in that, described nitrogen foam repeats producer, comprise main pipeline and it is connected respectively at the nitrogen foam agent pipeline of main pipeline bottom end opening and top end opening, foam output channel, in the middle part of described main pipeline, be provided with the foam implantation that nitrogen foam agent can be made fully to foam; By top tube and down tube, by connecing, hoop is formed by connecting described main pipeline; Offering the chuck for being located foam implantation inside described lower pipe upper port, chuck height is equal with the height of foam implantation; Described lower pipe is interior and is provided with whirlpool between foam implantation and nitrogen foam agent pipeline; Described foam implantation is a kind of device offering multiple permeability aperture; Described nitrogen foam agent pipeline, foam output channel are provided with and connect hoop.
5. the integral profile control technique of nitrogen foam in a kind of production of heavy oil reservoir process according to claim 1, it is characterized in that, described nitrogen foam distribution device comprises heavy sand and disturbance device, nozzle, described heavy sand and disturbance device rear end connecting T-shaped branches, separate two branch lines by T-shaped branches, two branch lines are all connected with nozzle; Described nozzle is restriction orifice nozzle; Described device front end is connected with front end card hoop head by pipe connecting.
6. the integral profile control technique of nitrogen foam in a kind of production of heavy oil reservoir process according to claim 1, it is characterized in that, described nitrogen foam measuring apparatus, comprises interconnective heavy husky device, pressure ring room, and described pressure ring room also gathers indicating system with transmitter and numerical control and is connected; The described heavy husky device the other end then connecting end portion with the upper pipe connecting of front band head; Described upper pipe connecting connects steam injection pipeline incoming flow pipe line by front band head; Described pressure ring room the other end connecting end portion is with the lower pipe connecting of lower catch hoop head; Described lower pipe connecting connects downstream steam pipeline by lower catch hoop head; Described transmitter and numerical control gather indicating system and comprise differential pressure transmitter, numerical control collection indicating system, and wherein differential pressure transmitter is connected in data gathering indicating system by signal wire, and the circumferential side wall of pressure ring room is also connected to differential pressure transmitter by pressure guiding pipe.
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| CN201410669409.2A CN105672961B (en) | 2014-11-20 | 2014-11-20 | integral profile control process for nitrogen foam in heavy oil reservoir exploitation process |
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| CN201410669409.2A CN105672961B (en) | 2014-11-20 | 2014-11-20 | integral profile control process for nitrogen foam in heavy oil reservoir exploitation process |
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| CN105672961A true CN105672961A (en) | 2016-06-15 |
| CN105672961B CN105672961B (en) | 2019-12-17 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030234106A1 (en) * | 2001-09-28 | 2003-12-25 | Surjaatmadja Jim B. | Downhole tool and method for fracturing a subterranean well formation |
| CN201236686Y (en) * | 2008-04-16 | 2009-05-13 | 大庆油田有限责任公司 | Foam generator with adjustable pore space medium |
| CN201818292U (en) * | 2010-06-02 | 2011-05-04 | 中国石油化工股份有限公司 | Foam generator for displacement experiment |
| CN202202850U (en) * | 2011-08-06 | 2012-04-25 | 中国石油化工股份有限公司 | Multi-medium oil displacement physical simulation experiment device |
| CN103233709A (en) * | 2013-05-13 | 2013-08-07 | 中国石油大学(华东) | Super heavy oil deposit exploiting carbon capture, utilization and storage (CCUS) system and method based on CO2 assisted steam assisted gravity drainage (SAGD) |
| CN103470235A (en) * | 2013-10-08 | 2013-12-25 | 天津凯德实业有限公司 | High-pressure nitrogen foam generation measuring and control device |
| CN104033143A (en) * | 2014-06-23 | 2014-09-10 | 中国石油大学(华东) | Formation method of nitrogen foam ground for oil-gas well fracturing |
-
2014
- 2014-11-20 CN CN201410669409.2A patent/CN105672961B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030234106A1 (en) * | 2001-09-28 | 2003-12-25 | Surjaatmadja Jim B. | Downhole tool and method for fracturing a subterranean well formation |
| CN201236686Y (en) * | 2008-04-16 | 2009-05-13 | 大庆油田有限责任公司 | Foam generator with adjustable pore space medium |
| CN201818292U (en) * | 2010-06-02 | 2011-05-04 | 中国石油化工股份有限公司 | Foam generator for displacement experiment |
| CN202202850U (en) * | 2011-08-06 | 2012-04-25 | 中国石油化工股份有限公司 | Multi-medium oil displacement physical simulation experiment device |
| CN103233709A (en) * | 2013-05-13 | 2013-08-07 | 中国石油大学(华东) | Super heavy oil deposit exploiting carbon capture, utilization and storage (CCUS) system and method based on CO2 assisted steam assisted gravity drainage (SAGD) |
| CN103470235A (en) * | 2013-10-08 | 2013-12-25 | 天津凯德实业有限公司 | High-pressure nitrogen foam generation measuring and control device |
| CN104033143A (en) * | 2014-06-23 | 2014-09-10 | 中国石油大学(华东) | Formation method of nitrogen foam ground for oil-gas well fracturing |
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