CN201874543U - Underground boosting water injection process pipe string - Google Patents
Underground boosting water injection process pipe string Download PDFInfo
- Publication number
- CN201874543U CN201874543U CN2010206266947U CN201020626694U CN201874543U CN 201874543 U CN201874543 U CN 201874543U CN 2010206266947 U CN2010206266947 U CN 2010206266947U CN 201020626694 U CN201020626694 U CN 201020626694U CN 201874543 U CN201874543 U CN 201874543U
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- water injection
- motor
- pipe
- packer
- tubing string
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Abstract
The utility model provides an underground boosting water injection process pipe string, in order to overcome the defects of raised single-well water injection pressure, the inconsistence of an aboveground water injection system, more potential safety hazards for the maintenance of high-pressure water injection above the ground, heavy workload for the repairing and maintenance of an aboveground pump and the like when the aboveground water injection process is adopted in the traditional oil fields. An oil pipe (1), a screen pipe (3), a motor compensator (4), a motor (5), a protector (6), an electric submergible pump (8), an insert type sealing device (10), a packer (11), an oil pipe pup joint (13), a screen pipe (12), an oil pipe pup joint (13) and a screwed plug (14) of the pipe string are fixedly and sequentially connected from top to bottom; a radial suction hole (7) is arranged on the wall of the oil pipe (1) connected between the protector (6) and the electric submergible pump (8); and the screen pipe (12) is located at the position of a water injection layer (16) of the lower part of a well bore. The pipe string has the beneficial effects as follows: the problem of the insufficient pressure of a single-well water injection system is effectively solved; the maintenance cost of single-well water injection is reduced; and the oil-field development benefit is improved.
Description
Affiliated technical field
The utility model relates to a kind of water injection technology tubing string, especially relates to a kind of downhole pressure increasing water injection technology tubing string.
Background technology
To the oil-bearing stratum flooding makeup energy, keeping formation pressure by water injection well, is to rely on natural energy to carry out after the primary oil recovery, or oil field development is in early days for improving the important oil reservoir development technology that recovery ratio and rate of oil production are widely adopted.At present the ground flood pattern in oil field is that injections water is improved pressure by high pressure water-injection pump, make it reach the required pressure of water filling after, deliver to each distributing room for water injection by water knockout drum and waterline again, by distributing room for water injection moisture is fitted on each water injection well injection oil reservoir.Along with deepening continuously of oil field development, because the difference of the reservoir characteristics of individual well, geological structure and exploitation course, part well water injection pressure raises, and causes a lot of water injection well mains pressure can not satisfy the requirement of injection allocation, can not finish the injection allocation amount, influence the smooth implementation of whole oil filed development plan.The technical problem underlying that the ground pressurized water injection exists comprises: the individual well water injection pressure raises, and ground flood pattern (waterflood-transmission line, well head) does not match; High pressure water injection is kept on ground, and potential safety hazard is many; Surface pump maintenance amount is big.
The utility model content
In order to overcome the individual well water injection pressure rising that existing old filed adopts ground water injection technology technology to exist, ground flood pattern (waterflood-transmission line, well head) does not match; High pressure water injection is kept on ground, and potential safety hazard is many; The big deficiency that waits of surface pump maintenance amount, the utility model provides a kind of downhole pressure increasing water injection technology tubing string.
The technical scheme that its technical problem that solves the utility model adopts is: pit shaft is formed by sleeve pipe and artificial bottom of a well, there is the water filling layer pit shaft bottom, downhole pressure increasing water injection technology tubing string is positioned at the pit shaft bottom, and oil pipe, screen casing, motor expansion loop, motor, protector, submersible electric pump, plug-in type sealing device, packer, tubing nipple, screen casing, tubing nipple, plug from top to bottom are fixedly connected sequentially; There is radially inlet hole the pump housing upper end of submersible electric pump; Screen casing is positioned at the water filling layer place of pit shaft bottom; Submersible electric pump is for being inverted.Packer is a back-off packer; The plug-in type sealing device inserts packer endoporus and radial seal; The motor required drive by cable from the aboveground motor that is passed to.
The beneficial effects of the utility model are effectively to improve the problem of individual well flood pattern insufficient pressure, reduction individual well water filling maintenance cost, minimizing water filling work operations amount, raising oil field development benefit.
Description of drawings
Fig. 1 is the utility model downhole pressure increasing water injection technology tubular column structure schematic diagram.
Among the figure: 1. oil pipe, 2. cable, 3. screen casing, 4. motor expansion loop, 5. motor, 6. protector; 7. inlet hole radially, 8. submersible electric pump, 9. axial passing away, 10. plug-in type sealing device, 11. packers; 12. screen casing, 13. tubing nipples, 14. plugs, 15. artificials bottom of a well, 16. water filling layers.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The pit shaft of the utility model downhole pressure increasing water injection technology tubing string is formed by sleeve pipe and artificial bottom of a well 15, and the pit shaft bottom is a water filling layer 16, and downhole pressure increasing water injection technology tubing string is positioned at the pit shaft bottom.Oil pipe 1 of the present utility model, screen casing 3, motor expansion loop 4, motor 5, protector 6, submersible electric pump 8, plug-in type sealing device 10, packer 11, tubing nipple 13, screen casing 12, tubing nipple 13, plug 14 from top to bottom are fixedly connected sequentially.There is radially inlet hole 7 pump housing upper end of submersible electric pump 8; The screen casing 12 of tubing string bottom is positioned at water filling layer 16 place of pit shaft bottom.Submersible electric pump 8 is for being inverted, and promptly installation direction is opposite with oil producing operation.
Using operation process of the present utility model is, at first successively plug 14, tubing nipple 13, screen casing 12, packer 11 is connected successively back G.I.H projected depth; Give up after releasing type packer 11 sets and put aside, trip out the above tubing string of giving up.Then, insertion sealing device 10, submersible electric pump 8, protector 6, motor 5, motor expansion loop 4, screen casing 3, oil pipe 1 and the cable 2 that connects successively is lowered in the pit shaft, plug-in type sealing device 10 inserts in the packer 11 and connects and radial seal.
During the work of the utility model downhole pressure increasing water injection technology tubing string, ground power passes to motor 6 by power cable 2, start the motor 6 on Electric Submersible Pump Unit top, motor 6 rotation at a high speed, and give the inverted submersible electric pump 8 in bottom with transmission of power by interconnective axle, drive submersible electric pump 8 high speed rotating.After injection water was injected by oil pipe 1, the screen casing 3 through the tubing string upper end entered the oil jacket annular space and flows downward, and the radially inlet hole 7 through submersible electric pump 8 upper ends enters in the tubing string again, in submersible electric pump 8 suction pumps; Inject water through continuing to flow downward after the supercharging step by step, enter packer downwards below 11 by the axial passing away 9 of submersible electric pump 8 bottoms, the screen casing 12 through the tubing string bottom flows in the pit shafts; Under the effect of pressure, inject water and inject target water filling layer, thereby finish the downhole pressure increasing water filling, to reach the producing well of identical layer position is on every side carried out the plane adjustment, improve the purpose of this fault block oil well productivity.
Use the utility model and can solve the too high problem of part individual well water injection pressure, realize individual well maximum boost 12MPa; Effectively solve the problem of individual well flood pattern insufficient pressure, reduce the maintenance cost and the workload of individual well water filling, improve the oil field development benefit.
It should be noted that the foregoing description is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (5)
1. downhole pressure increasing water injection technology tubing string, comprise oil pipe, motor, submersible electric pump, cable, protector, packer, tubing nipple, plug, pit shaft is formed by sleeve pipe and artificial bottom of a well, there is the water filling layer pit shaft bottom, downhole pressure increasing water injection technology tubing string is positioned at the pit shaft bottom, it is characterized in that: oil pipe (1), screen casing (3), motor expansion loop (4), motor (5), protector (6), submersible electric pump (8), plug-in type sealing device (10), packer (11), tubing nipple (13), screen casing (12), tubing nipple (13), plug (14) from top to bottom is fixedly connected sequentially; There is radially inlet hole (7) pump housing upper end of submersible electric pump (8); Screen casing (12) is positioned at the water filling layer (16) of pit shaft bottom and locates.
2. according to the described downhole pressure increasing water injection technology of claim 1 tubing string, it is characterized in that: described submersible electric pump (8) is for being inverted.
3. according to the described downhole pressure increasing water injection technology of claim 2 tubing string, it is characterized in that: described packer (11) is a back-off packer.
4. according to the described downhole pressure increasing water injection technology of claim 1 tubing string, it is characterized in that: described plug-in type sealing device (10) inserts packer (11) endoporus and radial seal.
5. according to the described downhole pressure increasing water injection technology of claim 4 tubing string, it is characterized in that: described motor (5) required drive by cable (2) from the aboveground motor (5) that is passed to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206266947U CN201874543U (en) | 2010-11-26 | 2010-11-26 | Underground boosting water injection process pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206266947U CN201874543U (en) | 2010-11-26 | 2010-11-26 | Underground boosting water injection process pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874543U true CN201874543U (en) | 2011-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206266947U Expired - Lifetime CN201874543U (en) | 2010-11-26 | 2010-11-26 | Underground boosting water injection process pipe string |
Country Status (1)
| Country | Link |
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| CN (1) | CN201874543U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434136A (en) * | 2011-11-10 | 2012-05-02 | 西南石油大学 | Electric pump oil production positive water injection integral pipe column and application method thereof |
| CN103174405A (en) * | 2013-03-15 | 2013-06-26 | 中国石油天然气股份有限公司 | System and method for increasing injection to under-injection wells in oil field |
| CN105089571A (en) * | 2014-05-24 | 2015-11-25 | 天津大港油田钻采技术开发公司 | Water injection string without surface flow and water injection technological method of water injection string |
| CN105156340A (en) * | 2015-08-20 | 2015-12-16 | 天津市百成油田采油设备制造有限公司 | Inverse water-injection electric submersible pump system |
| CN106555572A (en) * | 2016-11-30 | 2017-04-05 | 中国海洋石油总公司 | A kind of manpower intervention formula pulsed infusion equipment and its pulsed infusion method |
| CN112814635A (en) * | 2021-03-27 | 2021-05-18 | 管芮 | Pulse type pressurization water injection string |
-
2010
- 2010-11-26 CN CN2010206266947U patent/CN201874543U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434136A (en) * | 2011-11-10 | 2012-05-02 | 西南石油大学 | Electric pump oil production positive water injection integral pipe column and application method thereof |
| CN103174405A (en) * | 2013-03-15 | 2013-06-26 | 中国石油天然气股份有限公司 | System and method for increasing injection to under-injection wells in oil field |
| CN103174405B (en) * | 2013-03-15 | 2015-10-14 | 中国石油天然气股份有限公司 | A kind of system and method for oil field under-injected well augmented injection |
| CN105089571A (en) * | 2014-05-24 | 2015-11-25 | 天津大港油田钻采技术开发公司 | Water injection string without surface flow and water injection technological method of water injection string |
| CN105156340A (en) * | 2015-08-20 | 2015-12-16 | 天津市百成油田采油设备制造有限公司 | Inverse water-injection electric submersible pump system |
| CN105156340B (en) * | 2015-08-20 | 2018-08-21 | 天津市百成油田采油设备制造有限公司 | A kind of inversion injecting submersible pump system |
| CN106555572A (en) * | 2016-11-30 | 2017-04-05 | 中国海洋石油总公司 | A kind of manpower intervention formula pulsed infusion equipment and its pulsed infusion method |
| CN106555572B (en) * | 2016-11-30 | 2018-12-14 | 中国海洋石油集团有限公司 | A kind of manpower intervention formula pulsed infusion method |
| CN112814635A (en) * | 2021-03-27 | 2021-05-18 | 管芮 | Pulse type pressurization water injection string |
| CN112814635B (en) * | 2021-03-27 | 2022-08-12 | 辽宁金兴石油集团有限公司 | Pulse type pressurization water injection string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |