CN105257266A - Electric submersible pump same-well production-injection pipe column device and production-injection method - Google Patents
Electric submersible pump same-well production-injection pipe column device and production-injection method Download PDFInfo
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- CN105257266A CN105257266A CN201410348697.1A CN201410348697A CN105257266A CN 105257266 A CN105257266 A CN 105257266A CN 201410348697 A CN201410348697 A CN 201410348697A CN 105257266 A CN105257266 A CN 105257266A
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Abstract
The invention relates to an electric submersible pump same-well production-injection pipe column device and a production-injection method of the device. The device is characterized by sequentially comprising a sand filtering pipe (2), a test short connector (4), a sieve pipe (6), a first packer (5), a reverse water pump (11), a release sub (13), a second packer (14) and a water outlet pipe (15) from top to bottom, wherein the sand filtering pipe (2), the test short connector (4) and the sieve pipe (6) are sequentially connected; the sieve pipe (6) passes through the first packer (5); a water outlet of the sieve pipe (6) is positioned under the first packer (5); a water suction opening (10) of the reverse water pump (11) is communicated with an annular cavity; the annular cavity refers to an annular cavity between the first packer (5) and the second packer (14); a water outlet of the reverse water pump (11) is connected with the back-up sub (13); the back-up sub (13) passes through the second packer (14); and a water outlet (15) of the back-up sub (13) is positioned under the second packer (14).
Description
Technical field
The present invention relates to a kind of submersible electric pump same well production-injection tubular column unit and method.
Background technology
After oil field development enters high water-cut stage, take over the primary position of production capacity from self-contained oil field to marginal block and scattered blocks of cells future development.Junior unit block of cells development scheme is mainly taked in border district, and with the decline of landing surface production capacity, the difficulty of block stable yields is increasing, and water filling, as cost-effective energy supplement means, will become the main development scheme that this kind of block will increase production from now on.
In prior art, there is flooding pattern imperfection in the exploitation of craven fault block reservoirs, rate of oil production and recovery ratio low, and water injection technology is built a station routinely, and water injection cycle is long, uneconomic problem.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of submersible electric pump same well production-injection tubular column unit and method, can effectively reduce to adopt to form this, improves and adopts note efficiency.
Based on same inventive concept, the present invention has four independently technical schemes:
1, a kind of submersible electric pump same well production-injection tubular column unit, it is characterized in that: be provided with sand screen (2) from top to bottom successively, test short circuit (4), screen casing (6), first packer (5), be inverted water pump (11), back-off sub (13), second packer (14), outlet pipe (15), wherein sand screen (2), test short circuit (4), screen casing (6) connects successively, screen casing (6) is through the first packer (5), the delivery port of screen casing (6) is positioned at the below of the first packer (5), the water sucking mouth (10) of being inverted water pump (11) is communicated with ring cavity, said ring cavity is the ring cavity between the first packer (5) and the second packer (14), the delivery port being inverted water pump (11) connects back-off sub (13), back-off sub (13) is through the second packer (14), and the delivery port (15) of back-off sub (13) is positioned at the below of the second packer (14).
Be provided with protector (7), motor (8), Protection of reverse bias device (9) between screen casing (6) and inversion water pump (11), motor (8) is inverted water pump (11) for driving.
Be inverted water pump (11) outside and be also provided with centralizer (12).
2, the production-injection method utilizing said apparatus to carry out, is characterized in that:
Step 1: the down-hole back-off packer tubing string that oil pipe band back-off sub (13) and the second packer (14) form, to downhole designs position;
Step 2: ground is suppressed and realized the second packer (14) and set, and after setting end, well head pitching is suppressed realization again and given up;
Step 3: above carry and open out down-hole oil tube;
Step 4: under enter submersible electric pump same well production-injection tubular column unit, guarantee that sealing intubate is inserted in back-off sub (13);
Step 5: open motor (8), drive inverted water pump (11) to work;
Step 6: the water of water source layer is after the sand screen (2) of water gathering tube post filters, enter the ring cavity between the first packer (5) and the second packer (14), water pump (11) is entered again by the intake (10) of water pump (11), after supercharging step by step, the ring cavity of the second packer (14) below is discharged to, target of reinjecting water filling layer by delivery port (15).
Utilize the flow meter metering water injection rate at test short circuit (4) place, according to metering water injection rate, water pump (11) is regulated, change water injection rate.
3, a kind of submersible electric pump same well production-injection tubular column unit, it is characterized in that: be provided with screen casing (17), water pump (22), back-off sub (24), packer (25), sand screen (26) from top to bottom successively, back-off sub (24) is through packer (25), the lower termination sand screen (26) of back-off sub (24), the upper end water pump (22) of back-off sub (24), the delivery port (21) of water pump (22) is communicated with ring cavity, the ring cavity that said ring cavity is formed for packer (25) top; The delivery port of screen casing (17) is communicated with aforementioned ring cavity.
Be provided with protector (18), motor (19), Protection of reverse bias device (20) between screen casing (17) and water pump (22), motor (18) is for driving water pump (22).
Water pump (22) outside is also provided with centralizer (23).
4, the production-injection method utilizing said apparatus to carry out, is characterized in that:
Step 1: the down-hole back-off packer tubing string that oil pipe band back-off sub (24) and packer (25) form, to downhole designs position;
Step 2: ground is suppressed and realized packer (25) and set, and after setting end, well head pitching is suppressed realization again and given up;
Step 3: above carry and open out down-hole oil tube;
Step 4: under enter submersible electric pump same well production-injection tubular column unit, guarantee that sealing intubate is inserted in back-off sub (24);
Step 5: open motor (19), drives water pump (22) high-speed rotation;
Step 6: the water of water source layer is after sandpipe (26) filters after filtration, enter water pump (22), after supercharging step by step, be discharged to the ring cavity of packer (25) top by the delivery port (21) of water pump (22), target of reinjecting water filling layer.
Utilize the flow meter metering water injection rate of well head, according to metering water injection rate, water pump (22) is regulated, change water injection rate.
The beneficial effect that the present invention has:
The present invention is different with the position of water filling layer according to water harvesting layer, corresponding comprise adopt bet and under adopt note two kinds of device and methods.Compare with composite well pressurized water injection technique with traditional ground horizontal flood technique, have the following advantages: the water source pressurized water injection making full use of same oil well, save newly-built pump house expense, supporting water pot, ground flow and ground processing equipment, save surface construction investment; Electric Submersible Pump Unit operates steadily, floor space is little, maintenance load is little, reduces running cost; Avoid that note clear water may bring with the compatibility problems of formation water.Structure design advantages of simple of the present invention, convenient operation, is conducive to improving further adopting note efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of submersible electric pump same well production-injection tubular column unit embodiment one of the present invention;
Fig. 2 is the structural representation of submersible electric pump same well production-injection tubular column unit embodiment two of the present invention.
Detailed description of the invention
Embodiment one:
For water source layer upper, implanted layer, in lower situation, is selected and is adopted lower dispensing device and production-injection method.
As shown in Figure 1, submersible electric pump same well production-injection tubular column unit (above adopting downward flowing type) is provided with sand screen 2, test short circuit 4, screen casing 6, first packer 5 from top to bottom successively, is inverted water pump 11, back-off sub 13, second packer 14, wherein sand screen 2, test short circuit 4, screen casing 6 connect successively, screen casing 6 is through the first packer 5, the delivery port of screen casing 6 is positioned at the below of the first packer 5, the water sucking mouth 10 of being inverted water pump 11 is communicated with ring cavity, and said ring cavity is the ring cavity between the first packer 5 and the second packer 14; The delivery port being inverted water pump 11 connects back-off sub 13, and back-off sub 13 is through the second packer 14, and the delivery port 15 of back-off sub 13 is positioned at the below of the second packer 14.Be provided with protector 7, motor 8, Protection of reverse bias device 9 between screen casing 6 and inversion water pump 11, motor 8 is inverted water pump 11 for driving.Be inverted outside water pump 11 and be also provided with centralizer 12.
Adopt note to comprise the following steps:
Step 1: the down-hole back-off packer tubing string of oil pipe band back-off sub 13 and the second packer 14 composition, to downhole designs position;
Step 2: ground is suppressed and realized the second packer 14 and set, and after setting end, well head pitching is suppressed realization again and given up;
Step 3: above carry and open out down-hole oil tube;
Step 4: under enter submersible electric pump same well production-injection tubular column unit (above adopting downward flowing type), guarantee that sealing intubate is inserted in back-off sub 13;
Step 5: open motor 8, drive inverted water pump 11 to work;
Step 6: the water of water source layer 28 is after the sand screen 2 of water gathering tube post filters, enter the ring cavity between the first packer 5 and the second packer 14, water pump 11 is entered again by the intake 10 of water pump 11, after supercharging step by step, the ring cavity below the second packer 14 is discharged to, target of reinjecting water filling layer 29 by delivery port 15.
Meanwhile, utilize the flow meter metering water injection rate at test short circuit 4 place, according to metering water injection rate, water pump 11 is regulated, change water injection rate.
Embodiment two:
For water source layer under, implanted layer, in upper situation, is selected down and is adopted dispensing device and production-injection method.
As shown in Figure 2, submersible electric pump same well production-injection tubular column unit (under adopt note type) is provided with screen casing 17, water pump 22, back-off sub 24, packer 25, sand screen 26 from top to bottom successively, back-off sub 24 is through packer 25, the lower termination sand screen 26 of back-off sub 24, the upper end water pump 22 of back-off sub 24, the delivery port 21 of water pump 22 is communicated with ring cavity, the ring cavity of said ring cavity for being formed above packer 25; The delivery port of screen casing 17 is communicated with aforementioned ring cavity.Be provided with protector 18, motor 19, Protection of reverse bias device 20 between screen casing 17 and water pump 22, motor 18 is for driving water pump 22.Centralizer 23 is also provided with outside water pump 22.Centralizer 23 is also provided with outside water pump 22.
Adopt note to comprise the following steps:
Step 1: the down-hole back-off packer tubing string that oil pipe band back-off sub 24 and packer 25 form, to downhole designs position;
Step 2: ground is suppressed and realized packer 25 and set, and after setting end, well head pitching is suppressed realization again and given up;
Step 3: above carry and open out down-hole oil tube;
Step 4: under enter submersible electric pump same well production-injection tubular column unit (under adopt note type), guarantee that sealing intubate is inserted in back-off sub 24;
Step 5: open motor 19, drives water pump 22 high-speed rotation;
Step 6: the water of water source layer 31 after sandpipe 26 filters after filtration, enters water pump 22, after supercharging step by step, is discharged to the ring cavity above packer 25 by the delivery port 21 of water pump 22, target of reinjecting water filling layer 30.
Meanwhile, utilize the flow meter metering water injection rate of well head, according to metering water injection rate, water pump 22 is regulated, change water injection rate.
Claims (10)
1. a submersible electric pump same well production-injection tubular column unit, it is characterized in that: be provided with sand screen (2) from top to bottom successively, test short circuit (4), screen casing (6), first packer (5), be inverted water pump (11), back-off sub (13), second packer (14), outlet pipe (15), wherein sand screen (2), test short circuit (4), screen casing (6) connects successively, screen casing (6) is through the first packer (5), the delivery port of screen casing (6) is positioned at the below of the first packer (5), the water sucking mouth (10) of being inverted water pump (11) is communicated with ring cavity, said ring cavity is the ring cavity between the first packer (5) and the second packer (14), the delivery port being inverted water pump (11) connects back-off sub (13), back-off sub (13) is through the second packer (14), and the delivery port (15) of back-off sub (13) is positioned at the below of the second packer (14).
2. submersible electric pump same well production-injection tubular column unit according to claim 1; it is characterized in that: be provided with protector (7), motor (8), Protection of reverse bias device (9) between screen casing (6) and inversion water pump (11), motor (8) is inverted water pump (11) for driving.
3. submersible electric pump same well production-injection tubular column unit according to claim 2, is characterized in that: be inverted water pump (11) outside and be also provided with centralizer (12).
4. a submersible electric pump same well production-injection tubular column unit, it is characterized in that: be provided with screen casing (17), water pump (22), back-off sub (24), packer (25), sand screen (26) from top to bottom successively, back-off sub (24) is through packer (25), the lower termination sand screen (26) of back-off sub (24), the upper end water pump (22) of back-off sub (24), the delivery port (21) of water pump (22) is communicated with ring cavity, the ring cavity that said ring cavity is formed for packer (25) top; The delivery port of screen casing (17) is communicated with aforementioned ring cavity.
5. submersible electric pump same well production-injection tubular column unit according to claim 4; it is characterized in that: be provided with protector (18), motor (19), Protection of reverse bias device (20) between screen casing (17) and water pump (22), motor (18) is for driving water pump (22).
6. submersible electric pump same well production-injection tubular column unit according to claim 5, is characterized in that: water pump (22) outside is also provided with centralizer (23).
7. utilize the production-injection method that described in claim 1, device carries out, it is characterized in that:
Step 1: the down-hole back-off packer tubing string that oil pipe band back-off sub (13) and the second packer (14) form, to downhole designs position;
Step 2: ground is suppressed and realized the second packer (14) and set, and after setting end, well head pitching is suppressed realization again and given up;
Step 3: above carry and open out down-hole oil tube;
Step 4: under enter submersible electric pump same well production-injection tubular column unit, guarantee that sealing intubate is inserted in back-off sub (13);
Step 5: open motor (8), drive inverted water pump (11) to work;
Step 6: the water of water source layer is after the sand screen (2) of water gathering tube post filters, enter the ring cavity between the first packer (5) and the second packer (14), water pump (11) is entered again by the intake (10) of water pump (11), after supercharging step by step, the ring cavity of the second packer (14) below is discharged to, target of reinjecting water filling layer by delivery port (15).
8. method according to claim 7, is characterized in that: the flow meter metering water injection rate utilizing test short circuit (4) place, regulates water pump (11) according to metering water injection rate, change water injection rate.
9. utilize the production-injection method that described in claim 4, device carries out, it is characterized in that:
Step 1: the down-hole back-off packer tubing string that oil pipe band back-off sub (24) and packer (25) form, to downhole designs position;
Step 2: ground is suppressed and realized packer (25) and set, and after setting end, well head pitching is suppressed realization again and given up;
Step 3: above carry and open out down-hole oil tube;
Step 4: under enter submersible electric pump same well production-injection tubular column unit, guarantee that sealing intubate is inserted in back-off sub (24);
Step 5: open motor (19), drives water pump (22) high-speed rotation;
Step 6: the water of water source layer is after sandpipe (26) filters after filtration, enter water pump (22), after supercharging step by step, be discharged to the ring cavity of packer (25) top by the delivery port (21) of water pump (22), target of reinjecting water filling layer.
10. method according to claim 9, is characterized in that: the flow meter metering water injection rate utilizing well head, regulates water pump (22) according to metering water injection rate, change water injection rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348697.1A CN105257266A (en) | 2014-07-15 | 2014-07-15 | Electric submersible pump same-well production-injection pipe column device and production-injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348697.1A CN105257266A (en) | 2014-07-15 | 2014-07-15 | Electric submersible pump same-well production-injection pipe column device and production-injection method |
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| CN105257266A true CN105257266A (en) | 2016-01-20 |
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| CN201410348697.1A Pending CN105257266A (en) | 2014-07-15 | 2014-07-15 | Electric submersible pump same-well production-injection pipe column device and production-injection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | A kind of injection-production column jacket in coal bed gas well |
| CN110735618A (en) * | 2018-07-19 | 2020-01-31 | 中国石油天然气股份有限公司 | Oil extraction and water injection string |
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| RU2132455C1 (en) * | 1997-05-15 | 1999-06-27 | Нефтегазодобывающее управление "Лениногорскнефть" АО "Татнефть" | Method and pumping unit for injecting water into injection well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | A kind of injection-production column jacket in coal bed gas well |
| CN110735618A (en) * | 2018-07-19 | 2020-01-31 | 中国石油天然气股份有限公司 | Oil extraction and water injection string |
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