CN210068073U - Selective profile control and flooding tubular column for multilayer heterogeneous oil reservoir - Google Patents
Selective profile control and flooding tubular column for multilayer heterogeneous oil reservoir Download PDFInfo
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- CN210068073U CN210068073U CN201920454008.3U CN201920454008U CN210068073U CN 210068073 U CN210068073 U CN 210068073U CN 201920454008 U CN201920454008 U CN 201920454008U CN 210068073 U CN210068073 U CN 210068073U
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Abstract
The utility model provides a multilayer heterogeneous oil reservoir selective profile control and flooding tubular column, which at least comprises a casing, an oil pipe anchor, a double-acting valve, a sieve tube, a telescopic compensator, a profile control and flooding packer and a profile control and flooding injection allocation device; the oil pipe is positioned in the sleeve, the lower end of the oil pipe is sequentially connected with an oil pipe anchor, a double-acting valve and a sieve pipe, and a telescopic compensator, a profile control packer and a profile control injection allocation device are sequentially arranged between the oil pipe anchor and the double-acting valve. When the pipe column is used for profile control, a measurement and adjustment instrument is carried by a cable in an oil pipe to close the profile control and injection allocation device above a profile control and injection layer, and the liquid outlet hole of the profile control and injection allocation device at the profile control and injection layer section is opened to the maximum. And the oil pipe is internally provided with a cable carrying a profile control and drive plugging device which is in butt joint with a profile control and drive injection allocation device corresponding to the profile control and drive layer section, so as to plug the oil pipe at the lower end. And sequentially injecting a high-strength curing system, inorganic gel, a water drive flow direction changing agent, weak gel and strong gel YQY into the oil pipe, and allowing the mixture to enter an oil layer through a profile control and displacement injection allocation device to realize single-layer selective profile control and displacement.
Description
Technical Field
The utility model relates to a tubular column is transferred and drives to multilayer heterogeneous oil reservoir selectivity belongs to oil field tertiary oil recovery technical field.
Background
After the multi-layer heterogeneous oil reservoir development enters a middle-high water cut period, interlayer water absorption difference is large, large pore canals or crack development intervals cause ineffective circulation of oil wells and water injection, interlayer water absorption contradiction is aggravated, water flooding development difficulty is large, and recovery ratio is low. The polymer profile control and flooding is an effective technical means for improving the recovery efficiency, the traditional polymer profile control and flooding technology mainly aims at a water injection well of a cage system, a polymer profile control and flooding agent is injected into an oil pipe, the profile control and flooding agent is automatically split into corresponding intervals according to the water absorption capacity of an oil layer, most of the profile control and flooding agent enters the intervals due to the strong water absorption capacity of large pore canal and crack development intervals, but the profile control and flooding agent also enters the intervals with relatively poor permeability, so that the water absorption capacity of the non-profile control and flooding intervals becomes worse, the pressure of a shaft rises, the overall water absorption capacity of an oil reservoir becomes worse, and the improvement of the longitudinal water drive utilization degree of.
SUMMERY OF THE UTILITY MODEL
In order to overcome some and transfer the agent and get into the relative poor interval of permeability, lead to these non-transfer to drive the interval water absorbing capacity and become worse, pit shaft pressure risees, the whole water absorbing capacity variation of oil reservoir, influence the problem of the vertical water drive of oil reservoir with the improvement of degree, the utility model provides a tubular column is transferred and drives to multilayer heterogeneous oil reservoir selectivity, the utility model discloses can realize individual layer or multilayer selectivity and transfer and drive, can satisfy the water injection of ability oil field cage, the technological requirement of layering water injection again, the utility model discloses develop and block up arbitrary large pore path or crack interval, ensure to transfer and drive the whole appointed interval that inject into of agent, reduce the water absorbing capacity of these intervals, improve the water drive contradiction between the layer, and then reduce invalid water circulation, improve the vertical water drive of oil reservoir and use the degree.
The utility model adopts the technical proposal that:
a multilayer heterogeneous oil reservoir selective profile control and flooding tubular column at least comprises a casing, an oil pipe anchor, a double-acting valve, a sieve tube, a telescopic compensator, a profile control and flooding packer and a profile control and flooding injection allocation device; the oil pipe is positioned in the sleeve, the lower end of the oil pipe is sequentially connected with an oil pipe anchor, a double-acting valve and a sieve pipe, and a telescopic compensator, a profile control packer and a profile control injection allocation device are sequentially arranged between the oil pipe anchor and the double-acting valve.
The expansion compensator comprises a first expansion compensator, a second expansion compensator and a third expansion compensator; the adjusting and driving packer comprises a first adjusting and driving packer, a second adjusting and driving packer and a third adjusting and driving packer; the profile control and drive injection allocation device comprises a first profile control and drive injection allocation device, a second profile control and drive injection allocation device and a third profile control and drive injection allocation device; the first adjusting and driving packer is arranged between the first telescopic compensator and the first adjusting and driving injection allocation device, the second telescopic compensator is located below the first adjusting and driving injection allocation device, the second adjusting and driving packer is located below the second telescopic compensator, the second adjusting and driving injection allocation device is located below the second adjusting and driving packer, the third telescopic compensator is located below the second adjusting and driving injection allocation device, the third adjusting and driving packer is located below the third telescopic compensator, and the third adjusting and driving injection allocation device is located below the third adjusting and driving packer.
And a plug is arranged below the sieve tube.
The upper end of the oil pipe anchor is connected to a wellhead through an oil pipe.
The double-acting valve is connected with the sieve tube through threads.
The utility model has the advantages that:
the utility model provides a heterogeneous oil reservoir of multilayer selectivity is transferred and is driven tubular column can carry out the shutoff to arbitrary large pore canal or crack development interval, ensures to transfer and drives the whole appointed interval that injects into of agent, reduces the water absorption capacity in these intervals, improves the water absorption capacity in other intervals, improves the water drive contradiction between the layer, and then reduces ineffective hydrologic cycle, improves the vertical water drive of oil reservoir and uses the degree.
The following will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a selective profile control and flooding tubular column for a multilayer heterogeneous reservoir.
In the figures, the reference numbers are: 1. an oil pipe; 2. a sleeve; 3. an oil pipe anchor; 4. a first telescopic compensator; 5. a first profile control packer; 6. a first profile control dispenser; 7. a second telescopic compensator; 8. a second profile control packer; 9. a second profile control dispenser; 10. a third telescopic compensator; 11. a third profile control packer; 12. a third profile control injection allocator; 13. a double-acting valve; 14. a screen pipe.
Detailed Description
Example 1:
in order to overcome some profile control and drive the agent and get into the relative poor some interval of permeability, lead to these non-profile control and drive the interval water absorbing capacity and become worse, the pit shaft pressure risees, the whole water absorbing capacity variation of oil reservoir, influence the problem of the vertical water drive of oil reservoir with the improvement of degree, the utility model provides a as shown in figure 1 heterogeneous oil reservoir selectivity profile control and drive tubular column of multilayer, the utility model discloses can realize individual layer or multilayer selectivity profile control and drive, can satisfy the water injection of ability oil field cage system again, the technological requirement of layering water injection, the utility model discloses carry out the shutoff to arbitrary large pore path or crack development interval, ensure to transfer and drive the whole appointed interval of pouring into of agent, reduce the water absorbing capacity of these intervals, improve the water-absorbing capacity of other intervals, improve the water drive contradiction between the layer, and then reduce invalid water circulation, improve the vertical.
A selective profile control and flooding tubular column for a multilayer heterogeneous oil reservoir at least comprises a casing 2, an oil pipe 1, an oil pipe anchor 3, a double-acting valve 13, a sieve tube 14, a telescopic compensator, a profile control and flooding packer and a profile control and flooding injection allocation device; the oil pipe 1 is positioned in the casing 2, the lower end of the oil pipe 1 is sequentially connected with an oil pipe anchor 3, a double-acting valve 13 and a sieve pipe 14, and a telescopic compensator, a driving and adjusting packer and a driving and adjusting injection distributor are sequentially arranged between the oil pipe anchor 3 and the double-acting valve 13.
The utility model provides a working process of multilayer heterogeneous oil reservoir selectivity profile control flooding tubular column as follows:
putting a process pipe column: the drift diameter gauge is adopted to drift the well, the well is washed by active water, and then the plug, the sieve tube 14, the double-acting valve 13, the adjusting and driving injection allocation device, the driving packer, the telescopic compensator, the oil pipe anchor 3 and the oil pipe 1 are sequentially connected into the sleeve 2 by threads from bottom to top. The adjusting and driving injection allocation device is in a closed state before connection, and after the pipe column is connected and is lowered to a preset position of an oil layer, the adjusting and driving packer is subjected to position calibration by magnetic positioning. The injection allocation device for the oil displacement and displacement, the packer for the oil displacement and the expansion compensator form a group, and three groups of three-stage injection allocation are arranged in the pipe column.
Setting the pipe column: hydraulic pressure is applied from the inside of the oil pipe 1 through a cement truck, so that an anchor claw of the oil pipe anchor 3 is expanded, and a pipe column is fixed to prevent creeping; and setting the adjusting and driving packers at all stages to separate multiple oil layers.
Water injection: and (3) opening the profile control and flooding injection allocation devices at all levels by using a cable to carry a testing and adjusting instrument in the oil pipe 1, and injecting water in a layered manner according to geological injection allocation requirements.
And (3) during profile control and drive: after the adjustment and drive layer section is determined, a cable carrying a measurement and adjustment instrument is used in the oil pipe 1 to close the adjustment and drive injection allocation device above the adjustment and drive layer section, and the liquid outlet hole of the adjustment and drive injection allocation device at the adjustment and drive layer section is opened to the maximum. And (3) carrying the profile control and flooding plugging device by a cable in the oil pipe 1 to be butted with the profile control and flooding injection allocation device corresponding to the profile control and flooding layer section, and plugging the oil pipe 1 at the lower end. And sequentially injecting a high-strength curing system, inorganic gel, a water drive flow direction changing agent, weak gel and strong gel YQY into the oil pipe 1, and allowing the mixture to enter an oil layer through a profile control and displacement injection allocation device to realize single-layer selective profile control and displacement.
The utility model provides a heterogeneous oil reservoir of multilayer selectivity is transferred and is driven tubular column can carry out the shutoff to arbitrary large pore canal or crack development interval, ensures to transfer and drives the whole appointed interval that injects into of agent, reduces the water absorption capacity in these intervals, improves the water absorption capacity in other intervals, improves the water drive contradiction between the layer, and then reduces ineffective hydrologic cycle, improves the vertical water drive of oil reservoir and uses the degree.
Example 2:
based on embodiment 1, the number of the telescopic compensator, the profile control packer and the profile control injection allocation device in this embodiment is three, and the telescopic compensator includes a first telescopic compensator 4, a second telescopic compensator 7 and a third telescopic compensator 10; the adjusting and driving packer comprises a first adjusting and driving packer 5, a second adjusting and driving packer 8 and a third adjusting and driving packer 11; the injection allocation and displacement device comprises a first injection allocation and displacement device 6, a second injection allocation and displacement device 9 and a third injection allocation and displacement device 12; the packer is characterized in that the first adjusting and driving packer 5 is arranged between the first telescopic compensator 4 and the first adjusting and driving distributor 6, the second telescopic compensator 7 is positioned below the first adjusting and driving distributor 6, the second adjusting and driving packer 8 is positioned below the second telescopic compensator 7, the second adjusting and driving distributor 9 is positioned below the second adjusting and driving packer 8, the third telescopic compensator 10 is positioned below the second adjusting and driving distributor 9, the third adjusting and driving packer 11 is positioned below the third telescopic compensator 10, and the third adjusting and driving distributor 12 is positioned below the third adjusting and driving packer 11.
And a plug is arranged below the screen pipe 14.
The upper end of the oil pipe anchor 3 is connected to the wellhead through the oil pipe 1.
The double-acting valve 13 is connected with the sieve tube 14 through threads.
The utility model provides a screen pipe 14 and plug are arranged at the lower end of the pipe column, the upper ends of the screen pipe 14 and plug are connected with a double-acting valve 13 through an oil pipe 1, the upper end of the double-acting valve 13 is connected with a third profile control and injection allocation device 12 through an oil pipe 1, the upper end of the third profile control and injection allocation device 12 is connected with a third profile control and injection packer 11 through an oil pipe 1, the upper end of the third profile control and injection packer 11 is connected with a third telescopic compensator 10 through an oil pipe 1, the upper end of the third telescopic compensator 10 is connected with a second profile control and injection allocation device 9 through an oil pipe 1, the upper end of the second profile control and injection allocation device 9 is connected with a second profile control and injection packer 8 through an oil pipe 1, the upper end of the second profile control and injection packer 8 is connected with a second telescopic compensator 7 through an oil pipe 1, the upper end of the second telescopic compensator 7 is connected with a first profile control and injection allocation device 6 through an oil pipe 1, the upper end of the first profile control and injection allocation device 6 is connected with a first profile control and injection, the upper end of the first telescopic compensator 4 is connected with the oil pipe anchor 3 through the oil pipe 1, and the upper end of the oil pipe anchor 3 is connected to a wellhead through the oil pipe 1.
The utility model provides a working process of multilayer heterogeneous oil reservoir selectivity profile control flooding tubular column as follows:
putting a process pipe column: the method comprises the steps of dredging a well by using a drift diameter gauge, washing the well by using active water, and then sequentially putting a plug, a sieve tube 14, a double-acting valve 13, a third profile control and drive injection allocation device 12, a third profile control and drive packer 11, a third telescopic compensator 10, a second profile control and drive injection allocation device 9, a second profile control and drive packer 8, a second telescopic compensator 7, a first profile control and drive injection allocation device 6, a first profile control and drive packer 5, a first telescopic compensator 4, an oil pipe anchor 3 and an oil pipe 1 into a sleeve 2 from bottom to top by adopting threaded connection. The adjusting and driving injection allocation device is in a closed state before connection, and after the pipe column is connected and is lowered to a preset position of an oil layer, the adjusting and driving packer is subjected to position calibration by magnetic positioning.
Setting the pipe column: hydraulic pressure is applied from the inside of the oil pipe 1 through a cement truck, so that an anchor claw of the oil pipe anchor 3 is expanded, and a pipe column is fixed to prevent creeping; and setting the adjusting and driving packers at all stages to separate multiple oil layers.
In the utility model, a first telescopic compensator 4, a first profile control packer 5 and a first profile control injection distributor 6 are taken as the first level; the second telescopic compensator 7, the second profile control packer 8 and the second profile control injection distributor 9 are used as a second stage; a third telescopic compensator 10; the third profile control packer 11 and the third profile control distributor 12 serve as a third stage.
Water injection: and (3) opening the profile control and flooding injection allocation devices at all levels by using a cable to carry a testing and adjusting instrument in the oil pipe 1, and injecting water in a layered manner according to geological injection allocation requirements.
And (3) during profile control and drive: after the adjustment and drive layer section is determined, a cable carrying a measurement and adjustment instrument is used in the oil pipe 1 to close the adjustment and drive injection allocation device above the adjustment and drive layer section, and the liquid outlet hole of the adjustment and drive injection allocation device at the adjustment and drive layer section is opened to the maximum. And (3) carrying the profile control and flooding plugging device by a cable in the oil pipe 1 to be butted with the profile control and flooding injection allocation device corresponding to the profile control and flooding layer section, and plugging the oil pipe 1 at the lower end. And sequentially injecting a high-strength curing system, inorganic gel, a water drive flow direction changing agent, weak gel and strong gel YQY into the oil pipe 1, and allowing the mixture to enter an oil layer through a profile control and displacement injection allocation device to realize single-layer selective profile control and displacement.
The utility model provides a heterogeneous oil reservoir of multilayer selectivity is transferred and is driven tubular column can carry out the shutoff to arbitrary large pore canal or crack development interval, ensures to transfer and drives the whole appointed interval that injects into of agent, reduces the water absorption capacity in these intervals, improves the water absorption capacity in other intervals, improves the water drive contradiction between the layer, and then reduces ineffective hydrologic cycle, improves the vertical water drive of oil reservoir and uses the degree.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The device parts and methods for detailed description in the present invention are prior art and no further description will be given in the present invention. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (5)
1. A selective profile control and flooding tubular column for a multilayer heterogeneous oil reservoir is characterized in that: the oil pipe packer at least comprises a casing (2), an oil pipe (1), an oil pipe anchor (3), a double-acting valve (13), a sieve tube (14), a telescopic compensator, a profile control packer and a profile control injection allocation device; the oil pipe (1) is positioned in the casing pipe (2), the lower end of the oil pipe (1) is sequentially connected with an oil pipe anchor (3), a double-acting valve (13) and a sieve pipe (14), and a telescopic compensator, a profile control packer and a profile control injection allocation device are sequentially arranged between the oil pipe anchor (3) and the double-acting valve (13).
2. The selective profile control and flooding string for the multilayer heterogeneous reservoir according to claim 1, characterized in that: the expansion compensator comprises three expansion compensators, a drive adjusting packer and a drive adjusting injection allocation device, wherein the expansion compensators comprise a first expansion compensator (4), a second expansion compensator (7) and a third expansion compensator (10); the adjusting and driving packer comprises a first adjusting and driving packer (5), a second adjusting and driving packer (8) and a third adjusting and driving packer (11); the injection allocation and displacement device comprises a first injection allocation and displacement device (6), a second injection allocation and displacement device (9) and a third injection allocation and displacement device (12); the packer is characterized in that the first adjusting and driving packer (5) is arranged between the first telescopic compensator (4) and the first adjusting and driving injection distributor (6), the second telescopic compensator (7) is positioned below the first adjusting and driving injection distributor (6), the second adjusting and driving packer (8) is positioned below the second telescopic compensator (7), the second adjusting and driving injection distributor (9) is positioned below the second adjusting and driving packer (8), the third telescopic compensator (10) is positioned below the second adjusting and driving injection distributor (9), the third adjusting and driving packer (11) is positioned below the third telescopic compensator (10), and the third adjusting and driving injection distributor (12) is positioned below the third adjusting and driving packer (11).
3. The selective profile control and flooding string for the multilayer heterogeneous reservoir according to claim 1, characterized in that: and a plug is arranged below the sieve tube (14).
4. The selective profile control and flooding string for the multilayer heterogeneous reservoir according to claim 1, characterized in that: the upper end of the oil pipe anchor (3) is connected to a wellhead through an oil pipe (1).
5. The selective profile control and flooding string for the multilayer heterogeneous reservoir according to claim 1, characterized in that: the double-acting valve (13) is connected with the sieve tube (14) through threads.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920454008.3U CN210068073U (en) | 2019-04-04 | 2019-04-04 | Selective profile control and flooding tubular column for multilayer heterogeneous oil reservoir |
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| CN201920454008.3U CN210068073U (en) | 2019-04-04 | 2019-04-04 | Selective profile control and flooding tubular column for multilayer heterogeneous oil reservoir |
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| CN210068073U true CN210068073U (en) | 2020-02-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647912A (en) * | 2020-12-29 | 2021-04-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
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2019
- 2019-04-04 CN CN201920454008.3U patent/CN210068073U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647912A (en) * | 2020-12-29 | 2021-04-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
| CN112647912B (en) * | 2020-12-29 | 2022-09-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
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