CN102777160B - Carbon dioxide sand mulling oil production process for oilfield and special carbon dioxide sand mulling device - Google Patents
Carbon dioxide sand mulling oil production process for oilfield and special carbon dioxide sand mulling device Download PDFInfo
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- CN102777160B CN102777160B CN201210140140.XA CN201210140140A CN102777160B CN 102777160 B CN102777160 B CN 102777160B CN 201210140140 A CN201210140140 A CN 201210140140A CN 102777160 B CN102777160 B CN 102777160B
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- carbon dioxide
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- quartz sand
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Abstract
The invention belongs to a liquid-phase carbon dioxide and quartz sand mixed injection rock stratum process and a sand mulling device in a tertiary oil production process of an oilfield oil production process. The uniformly-mixed liquid-phase carbon dioxide and solid quartz sand are simultaneously injected into an oil well rock stratum through a high-pressure pump with pressure of 40-60MPa and are fully reacted under the condition of oil reservoir to release carbon dioxide gas. The carbon dioxide is dissolved into crude oil, the viscosity of crude oil is reduced, and the crude oil volume is expanded. The solid quartz sand as a support material enters a stratum along with a high-pressure solution to be filled into the cracks of the rock stratum to play a role of supporting the cracks not to be closed due to stress release, so that a high-conductivity capacity is kept, and oil and gas are unrestricted. The invention provides the sand mulling device at the same time. According to the process, the viscosity of crude oil can be reduced, the crude oil volume can be expanded, meanwhile, the solid quartz sand is filled into the cracks of the rock stratum to play the role of supporting the cracks not to be closed due to the stress release, so that the high-conductivity capacity is kept, the oil and the gas are unrestricted, and the yield is increased.
Description
Technical field
The invention belongs to oil extraction in oil field technology, is the improvement of carbon dioxide mulling oil recovery technique.
Background technology
Along with the continuous increase of oil demand amount in global range, oil is as limited non-renewable energy, find that the opportunity in larger oil storage oil field reduces again, this just forces people that notice is invested raising old filed recovery efficiency technique, inject liquid phase carbon dioxide as oil well tertiary oil recovery technology, be used widely.But process and the device technique problem of the mixed with proppants such as liquid phase carbon dioxide and quartz sand injection rock stratum are not resolved.
Summary of the invention
Rock stratum technique and mixing device are injected in the mixing that the object of the invention is to provide liquid phase carbon dioxide in a kind of oil well tertiary oil recovery technique and quartz sand, improve oil recovery factor.
Specifically, rock stratum technique and mixing device are injected in the mixing of the liquid phase carbon dioxide in tertiary oil recovery technique and quartz sand, after it is characterized in that utilizing mixing device liquid phase carbon dioxide and solid quartz sand to be mixed, inject well formation by high-pressure pump with 40-60MPa pressure simultaneously, make it fully react under reservoir conditions and discharge carbon dioxide, carbon dioxide solubility, among crude oil, reduces viscosity of crude, expansion crude oil volume, thus reach the object improving oil recovery factor.Backing material solid quartz sand enters Filling in rock crack in company with high-pressure solution, plays and supports crack not stress release and closed effect, thus keep high flow conductivity, make oil gas unimpeded, increase yield.The oil well of injecting carbon dioxide and quartz sand mixing is used to improve output 30-50%.
Rock stratum device is injected in the mixing of described liquid phase carbon dioxide and quartz sand, there is a sand tank, sand tank top is connected with fluid inlet pipe for passing into carbon dioxide and gas phase inlet tube, and sand tank bottom is connected with blended liquid phase outlet for releasing carbon dioxide and gas phase outlet; Sand tank inner bottom part is also equipped with for stirring the screw rod Pei Sha mechanism with transport of sand simultaneously; Liquid-phase outlet pipe is also connected with gas-liquid separator.
Fluid inlet pipe and gas phase inlet tube are all connected with flow meter and increase pump.
Described screw rod Pei Sha mechanism has a helical axis, and this helical axis is driven by hydraulic means and rotates simultaneously, and this hydraulic means is connected with operation cabinet.
Rock stratum technique is injected in the mixing of liquid phase carbon dioxide provided by the invention and quartz sand, adopt liquid phase carbon dioxide and solid fine sand mixing press-in oil well, reduce viscosity of crude, expansion crude oil volume, simultaneously solid quartz sand is filled in rock crack, plays and supports crack not stress release and closed effect, thus keep high flow conductivity, make oil gas unimpeded, increase yield.
The special mixing device structure simultaneously provided is simple, and mulling is effective.
Accompanying drawing explanation
Fig. 1 is mixing device structural representation of the present invention.
Fig. 2 is Fig. 1 top view.
Fig. 3 is Fig. 1 left side view.
Detailed description of the invention
Carbon dioxide mulling oil production technology in oil field of the present invention, it is characterized in that the liquid phase carbon dioxide mixed and solid quartz sand to inject well formation by high-pressure pump with 40-60MPa pressure simultaneously, it is made fully to react under reservoir conditions and discharge carbon dioxide, carbon dioxide solubility is among crude oil, reduce viscosity of crude, expansion crude oil volume; Solid quartz sand enters Filling as backing material in rock crack in company with high-pressure solution, plays and supports crack not stress release and closed effect, thus keep high flow conductivity, make oil gas unimpeded.
Rock stratum technique special carbon dioxide mixing device is injected in the mixing that accompanying drawing 1-3 gives oil well liquid phase carbon dioxide and quartz sand, it has a sand tank 11, sand tank 11 top is connected with fluid inlet pipe 5 for passing into carbon dioxide and gas phase inlet tube 6, and sand tank 11 bottom is connected with blended liquid phase outlet 3 for releasing carbon dioxide and gas phase outlet 9; Sand tank 11 inner bottom part is also equipped with for stirring the screw rod Pei Sha mechanism 13 with transport of sand simultaneously; Liquid-phase outlet pipe 3 is also connected with gas-liquid separator 10.Fluid inlet pipe 5 and gas phase inlet tube 6 are all connected with flow meter 4 and booster pump (No. 2 increase pumps 2, No. 1 increase pump 7).Screw rod Pei Sha mechanism 13 has a helical axis, and this helical axis drives rotation by hydraulic means 8 simultaneously, and this hydraulic means 8 is connected with operation cabinet 1.
Claims (3)
1. oil field carbon dioxide mulling oil production technology, it is characterized in that the liquid phase carbon dioxide mixed and solid quartz sand to inject well formation by high-pressure pump with 40-60MPa pressure simultaneously, it is made fully to react under reservoir conditions and discharge carbon dioxide, carbon dioxide solubility is among crude oil, reduce viscosity of crude, expansion crude oil volume; Solid quartz sand enters Filling as backing material in rock crack in company with high-pressure solution, plays and supports crack not stress release and closed effect, thus keep high flow conductivity, make oil gas unimpeded.
2. an oil field carbon dioxide mulling oil production technology special carbon dioxide mixing device as claimed in claim 1, it is characterized in that there is a sand tank (11), sand tank (11) top is connected with fluid inlet pipe (5) for passing into carbon dioxide and gas phase inlet tube (6), and sand tank (11) bottom is connected with blended liquid phase outlet (3) for releasing carbon dioxide and gas phase outlet (9); Sand tank (11) inner bottom part is also equipped with for stirring the screw rod Pei Sha mechanism (13) with transport of sand simultaneously; Liquid-phase outlet pipe (3) is also connected with gas-liquid separator (10); Screw rod Pei Sha mechanism (13) has a helical axis, and this helical axis is driven by hydraulic means (8) and rotates simultaneously, and this hydraulic means (8) is connected with operation cabinet (1).
3. carbon dioxide mixing device according to claim 2, is characterized in that fluid inlet pipe (5) and gas phase inlet tube (6) are all connected with flow meter (4) and booster pump (2,7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210140140.XA CN102777160B (en) | 2012-05-08 | 2012-05-08 | Carbon dioxide sand mulling oil production process for oilfield and special carbon dioxide sand mulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210140140.XA CN102777160B (en) | 2012-05-08 | 2012-05-08 | Carbon dioxide sand mulling oil production process for oilfield and special carbon dioxide sand mulling device |
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| Publication Number | Publication Date |
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| CN102777160A CN102777160A (en) | 2012-11-14 |
| CN102777160B true CN102777160B (en) | 2015-07-01 |
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| CN201210140140.XA Active CN102777160B (en) | 2012-05-08 | 2012-05-08 | Carbon dioxide sand mulling oil production process for oilfield and special carbon dioxide sand mulling device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266172A (en) * | 2018-03-26 | 2018-07-10 | 湖北中油科昊机械制造有限公司 | A kind of liquid carbon dioxide conveys DWHSQ-12 type outfits |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4609043A (en) * | 1984-10-22 | 1986-09-02 | Mobil Oil Corporation | Enhanced oil recovery using carbon dioxide |
| CN201236688Y (en) * | 2008-08-08 | 2009-05-13 | 陕西宝大新技术实业有限公司 | Carbon dioxide booster pump injection vehicle |
| CN101718192A (en) * | 2009-12-04 | 2010-06-02 | 北京高新利华催化材料制造有限公司 | Method for carrying out tertiary oil production on oil field |
| CN202832402U (en) * | 2012-05-08 | 2013-03-27 | 宝鸡市金心泵业制造有限责任公司 | Carbon dioxide sand mulling device specially used for oil field carbon dioxide sand mulling oil extraction |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7090017B2 (en) * | 2003-07-09 | 2006-08-15 | Halliburton Energy Services, Inc. | Low cost method and apparatus for fracturing a subterranean formation with a sand suspension |
| US7513307B2 (en) * | 2006-02-13 | 2009-04-07 | Team Co2 Holdings Llc | Pumping system for injecting a mixture of liquids via a well into a subterranean formation |
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2012
- 2012-05-08 CN CN201210140140.XA patent/CN102777160B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4609043A (en) * | 1984-10-22 | 1986-09-02 | Mobil Oil Corporation | Enhanced oil recovery using carbon dioxide |
| CN201236688Y (en) * | 2008-08-08 | 2009-05-13 | 陕西宝大新技术实业有限公司 | Carbon dioxide booster pump injection vehicle |
| CN101718192A (en) * | 2009-12-04 | 2010-06-02 | 北京高新利华催化材料制造有限公司 | Method for carrying out tertiary oil production on oil field |
| CN202832402U (en) * | 2012-05-08 | 2013-03-27 | 宝鸡市金心泵业制造有限责任公司 | Carbon dioxide sand mulling device specially used for oil field carbon dioxide sand mulling oil extraction |
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| CN102777160A (en) | 2012-11-14 |
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