CN103573194B - Electric submersible pump gas lock oil well production string optimization device - Google Patents
Electric submersible pump gas lock oil well production string optimization device Download PDFInfo
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- CN103573194B CN103573194B CN201310539836.4A CN201310539836A CN103573194B CN 103573194 B CN103573194 B CN 103573194B CN 201310539836 A CN201310539836 A CN 201310539836A CN 103573194 B CN103573194 B CN 103573194B
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- valve
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- electric submersible
- submersible pump
- packer
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Abstract
Electric submersible pump gas lock oil well production string optimization device, comprise production casing, electric submersible pump unit, oil pipe, packer, vent valve, minor diameter coiled tubing, gas lift valve, sliding sleeve, storm valve, Y-Shaped instrument, seating nipple plug, pump discharge one way valve, wherein, described oil pipe is installed on production casing inside, oil pipe bottom is provided with seating nipple plug, seating nipple plug upper end is provided with Y-Shaped instrument, in Y-Shaped instrument one end, pump discharge one way valve is installed, pump discharge one way valve is connected with electric submersible pump unit, Y-Shaped instrument upper end is provided with packer, sliding sleeve is arranged on the oil pipe position between packer and storm valve, packer one end is provided with vent valve, vent valve is connected with the gas lift valve being installed on oil pipe top by minor diameter coiled tubing, gas lift valve is installed on the storm valve lower end on oil pipe top, the present invention does not need to change original production production tree, when not increasing ground control and supercharging equipment, long term maintenance gaslift is produced, and effectively suppress gas lock.
Description
Technical field
The present invention relates to electric submersible pumping field, particularly electric submersible pump gas lock oil well production string optimization device.
Background technology
Electric submersible pumping is one of artificial lifting way that current offshore oilfield is conventional, has the advantage that discharge capacity is large, lift is high.But its single artificial lifting way is limited by the characteristic of centrifugal multistage pump multiple centrifugal pump to free gas sensitivity, often shows certain limitation.Electric immersible pump well operating mode instability, even the electric submersible pump gas lock of causing because free gas enters the pump housing as usual stops discharge opeing.The free gas entering electric submersible pump to the performance of electric submersible pump and aging effects very large, enter the more pump performances of pump free gas poorer.Gas embodies the change of the impact of electric submersible pump by electric submersible pump electric current; light then show as current fluctuation; show as frequent underload shutdown time serious, even make most of flow channel space of centrifugal pump be occupied by gas and gas lock phenomenon occurs, finally make centrifugal pump stop discharge opeing.If run under keeping the long-time gas lock state of centrifugal pump, motor temperature will be caused to rise and insulating performance of cable decline, final motor damage.Usually take to deepen pump to hang, make PIP layer saturation pressure as closely as possible, gas is separated out in oil pipe, reduce free gas and enter the pump housing; Or start with from the gas-tight technology of electric submersible pump itself, such as select the more free gas of high-efficiency gas-liquid centrifugal pump process, increase gas processer at pump intake end, after free gas is separated from well liquid, discharge from sleeve pipe.All measures are all reduce the free gas entering the pump housing, avoid gas on the impact of electric submersible pump, impel electric submersible pump high-efficiency operation and oil field Efficient Development.
Conventional flow string is Y-block type electric submersible pump unit design, and cable-passing packer is not with vent valve, and distance electric submersible pump intake is less than 15 meters.An one way valve is provided with in electric submersible pump outlet.When static reservoir pressure is less than bubble point pressure, partly degassed formation fluid enters shaft bottom mouth during from producing zone position, at packer to form a little pneumatic jack in setting of casing.After lifting power equipment electric submersible pump fault, air accumulation in pump, form electric submersible pump gas lock, because strata pressure can not make oil well blowing, degassed layering in production of hydrocarbons oil pipe, forms hydrostatic column, when electric submersible pump starts again at the above oil pipe of electric submersible pump Outlet check valves, the electric submersible pump outlet pressure being in gas lock cannot open check valve, causes electric submersible pump to stop fluid.
Summary of the invention
Main purpose of the present invention is the above-mentioned shortcoming overcoming prior art existence, and electric submersible pump gas lock oil well production string optimization device is provided, pass through the gas lift valve of the installed packer with vent valve and the access of top oil pipe, vent valve is connected by the minor diameter coiled tubing with anti-CO2 function with gas lift valve, self-produced associated gas enters top oil pipe by minor diameter coiled tubing, the corrosion preventing CO2 gas from producing production casing, produces gas lift simultaneously.Due to the connection of coiled tubing, can reach packer with well-sinking exhaust and the effect increasing shaft bottom producing fluid level, after gas enters oil pipe, density in flow string can be reduced, reduce electric submersible pump discharge head, the discharge capacity of electric submersible pump is discharged, reach the good action that gas lock is separated in volume increase, realize not needing to change original production production tree, do not increase ground and control and supercharging equipment, long term maintenance gaslift is produced, and effectively suppresses gas lock.
The object of the invention is to be realized by following technical scheme:
Electric submersible pump gas lock oil well production string optimization device, comprise production casing, electric submersible pump unit, oil pipe, packer, vent valve, minor diameter coiled tubing, gas lift valve, sliding sleeve, storm valve, Y-Shaped instrument, seating nipple plug, pump discharge one way valve, wherein, described oil pipe is installed on production casing inside, oil pipe bottom is provided with seating nipple plug, seating nipple plug upper end is provided with Y-Shaped instrument, in Y-Shaped instrument one end, pump discharge one way valve is installed, pump discharge one way valve is connected with electric submersible pump unit, Y-Shaped instrument upper end is provided with packer, sliding sleeve is arranged on the oil pipe position between packer and storm valve, packer one end is provided with vent valve, vent valve is connected with the gas lift valve being installed on oil pipe top by the minor diameter coiled tubing with anti-CO2 function, gas lift valve is installed on the storm valve lower end on oil pipe top.
As a further improvement on the present invention: described minor diameter coiled tubing tubing string Nei Ya branch is greater than oil pipe column Nei Ya branch and valve pressure reduction sum crossed by gas lift valve.
As a further improvement on the present invention: described minor diameter coiled tubing has anti-CO2 function.
Beneficial effect of the present invention: the present invention is owing to adopting technique scheme, electric submersible pump gas lock oil well production string optimization device is provided, pass through the gas lift valve of the installed packer with vent valve and the access of top oil pipe, vent valve is connected by the minor diameter coiled tubing with anti-CO2 function with gas lift valve, self-produced associated gas enters top oil pipe by minor diameter coiled tubing, the corrosion preventing CO2 gas from producing production casing, produces gas lift simultaneously.Due to the connection of coiled tubing, can reach packer with well-sinking exhaust and the effect increasing shaft bottom producing fluid level, after gas enters oil pipe, density in flow string can be reduced, reduce electric submersible pump discharge head, the discharge capacity of electric submersible pump is discharged, reach the good action that gas lock is separated in volume increase, realize not needing to change original production production tree, do not increase ground and control and supercharging equipment, long term maintenance gaslift is produced, and effectively suppresses gas lock.
Accompanying drawing explanation
fig. 1 is the structural representation of invention, major label description in figure:
1-production casing; 2-electric submersible pump unit; 3-oil pipe; 4-packer; 5-vent valve; 6-minor diameter coiled tubing; 7-gas lift valve; 8-sliding sleeve; 9-storm valve; 10-Y-Shaped instrument; 11-seating nipple plug; 12-pump discharge one way valve.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the present invention is described in detail.
As shown in Figure 1, electric submersible pump gas lock oil well production string optimization device, comprise production casing 1, electric submersible pump unit 2, oil pipe 3, packer 4, vent valve 5, minor diameter coiled tubing 6, gas lift valve 7, sliding sleeve 8, storm valve 9, Y-Shaped instrument 10, seating nipple plug 11, pump discharge one way valve 12, wherein, it is inner that described oil pipe 3 is installed on production casing 1, oil pipe 3 bottom is provided with seating nipple plug 11, seating nipple plug 11 upper end is provided with Y-Shaped instrument 10, in Y-Shaped instrument 10 one end, pump discharge one way valve 12 is installed, pump discharge one way valve 12 is connected with electric submersible pump unit 2, Y-Shaped instrument 10 upper end is provided with packer 4, sliding sleeve 8 is arranged on oil pipe 3 position between packer 4 and storm valve 9, packer 4 one end is provided with vent valve 5, vent valve 5 is connected with the gas lift valve 7 being installed on oil pipe 3 top by minor diameter coiled tubing 6, gas lift valve 7 is installed on storm valve 9 lower end on oil pipe 3 top.
Described minor diameter coiled tubing 6 tubing string Nei Ya branch is greater than oil pipe 3 tubing string Nei Ya branch and valve pressure reduction sum crossed by gas lift valve 7.
Described minor diameter coiled tubing 6 has anti-CO2 function.
operating procedure is as follows
It is inner that oil pipe 3 is installed on production casing 1, oil pipe 3 bottom is provided with seating nipple plug 11, seating nipple plug 11 upper end is provided with Y-Shaped instrument 10, Y-Shaped instrument 10 one end is provided with pump discharge one way valve 12, pump discharge one way valve 12 is connected with electric submersible pump unit 2, Y-Shaped instrument 10 upper end is provided with packer 4, bottom hole separated by packer 4, retain the packer fluids in oil jacket annular space, play the effect of protection production casing 1 and safety in production, packer 4 one end is provided with vent valve 5, vent valve 5 is connected with the gas lift valve 7 being installed on oil pipe 3 top by minor diameter coiled tubing 6, minor diameter coiled tubing 6 has anti-CO2 function, self-produced associated gas enters top oil pipe 3 by minor diameter coiled tubing 6, prevent the corrosiveness that CO2 gas produces production casing 1, produce certain gas lift simultaneously, gas lift valve 7 is installed on storm valve 9 lower end that oil pipe 3 top is installed, storm valve 9 ensures oil well not outwards overflow under special circumstances.After gas enters oil pipe 3, also can reduce density in flow string, electric submersible pump discharge head can be reduced, the discharge capacity of electric submersible pump is discharged, reach the good action that gas lock is separated in volume increase, realize not needing to change original production production tree, do not increase ground and control and supercharging equipment, long term maintenance gaslift is produced, and effectively suppresses gas lock.
In sum, after those of ordinary skill in the art reads file of the present invention, make other various corresponding conversion scheme according to technical scheme of the present invention and technical conceive without the need to creative mental labour, all belong to the scope that the present invention protects.
Claims (2)
1. electric submersible pump gas lock oil well production string optimization device, it is characterized in that: comprise production casing, electric submersible pump unit, oil pipe, packer, vent valve, minor diameter coiled tubing, gas lift valve, sliding sleeve, storm valve, Y-Shaped instrument, seating nipple plug, pump discharge one way valve, wherein, described oil pipe is installed on production casing inside, oil pipe bottom is provided with seating nipple plug, seating nipple plug upper end is provided with Y-Shaped instrument, in Y-Shaped instrument one end, pump discharge one way valve is installed, pump discharge one way valve is connected with electric submersible pump unit, Y-Shaped instrument upper end is provided with packer, sliding sleeve is arranged on the oil pipe position between packer and storm valve, packer one end is provided with vent valve, vent valve is connected with the gas lift valve being installed on oil pipe top by the minor diameter coiled tubing with anti-CO2 function, gas lift valve is installed on the storm valve lower end on oil pipe top.
2. electric submersible pump gas lock oil well production string optimization device according to claim 1, is characterized in that: described minor diameter coiled tubing tubing string Nei Ya branch is greater than oil pipe column Nei Ya branch and valve pressure reduction sum crossed by gas lift valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539836.4A CN103573194B (en) | 2013-11-05 | 2013-11-05 | Electric submersible pump gas lock oil well production string optimization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539836.4A CN103573194B (en) | 2013-11-05 | 2013-11-05 | Electric submersible pump gas lock oil well production string optimization device |
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| Publication Number | Publication Date |
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| CN103573194A CN103573194A (en) | 2014-02-12 |
| CN103573194B true CN103573194B (en) | 2015-08-26 |
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| CN201310539836.4A Expired - Fee Related CN103573194B (en) | 2013-11-05 | 2013-11-05 | Electric submersible pump gas lock oil well production string optimization device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879098B (en) * | 2015-06-12 | 2017-10-13 | 中国海洋石油总公司 | A kind of concentric double pipe gas well liquid loading tubing string |
| CN109519181B (en) * | 2018-12-11 | 2023-12-01 | 山东交通学院 | Single-piston rod symmetrical hydraulic oil cylinder series connection propulsion system of shield tunneling machine |
| CN111379538B (en) * | 2020-03-18 | 2022-05-03 | 中国海洋石油集团有限公司 | Method for verifying opening degree of underground hydraulic control sliding sleeve suitable for intelligent well completion |
| CN112031683A (en) * | 2020-08-19 | 2020-12-04 | 中国海洋石油集团有限公司 | Sand washing and sand carrying lifting production integrated process pipe column and method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538035A (en) * | 2003-04-18 | 2004-10-20 | 上海石油天然气有限公司 | Oil-submersible electric pump-gas lift oil extraction method and its equipment |
| CN201581881U (en) * | 2010-01-18 | 2010-09-15 | 郭欣竹 | Injection-production integral tubular column of thickened oil pressure-exempting well |
| CN201620768U (en) * | 2010-03-03 | 2010-11-03 | 中国石油天然气股份有限公司 | Self-spraying and lifting interactive column |
| CN202882780U (en) * | 2012-06-18 | 2013-04-17 | 天津克睿特维科技发展有限公司 | Electric submersible pump production pipe column |
| CN203584324U (en) * | 2013-11-05 | 2014-05-07 | 中国海洋石油总公司 | Optimization device of gas locking oil well production tubular column of electric submersible pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6533035B2 (en) * | 2001-04-24 | 2003-03-18 | Layne Christensen Company | Method and apparatus for stimulating well production |
| BRPI0501757B1 (en) * | 2004-04-14 | 2016-09-27 | Baker Hughes Inc | pressurized gas lift system as a backup to a submersible electric pump and method |
-
2013
- 2013-11-05 CN CN201310539836.4A patent/CN103573194B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538035A (en) * | 2003-04-18 | 2004-10-20 | 上海石油天然气有限公司 | Oil-submersible electric pump-gas lift oil extraction method and its equipment |
| CN201581881U (en) * | 2010-01-18 | 2010-09-15 | 郭欣竹 | Injection-production integral tubular column of thickened oil pressure-exempting well |
| CN201620768U (en) * | 2010-03-03 | 2010-11-03 | 中国石油天然气股份有限公司 | Self-spraying and lifting interactive column |
| CN202882780U (en) * | 2012-06-18 | 2013-04-17 | 天津克睿特维科技发展有限公司 | Electric submersible pump production pipe column |
| CN203584324U (en) * | 2013-11-05 | 2014-05-07 | 中国海洋石油总公司 | Optimization device of gas locking oil well production tubular column of electric submersible pump |
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| CN103573194A (en) | 2014-02-12 |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC (China) Limited Zhanjiang Branch Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 China oil tower, 25 Chaoyangmen North Street, Dongcheng District, Beijing Co-patentee before: CNOOC (China) Limited Zhanjiang Branch Patentee before: China National Offshore Oil Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20201105 |