CN203603866U - Low-shear layered sand prevention layered polymer injection process pipe column - Google Patents
Low-shear layered sand prevention layered polymer injection process pipe column Download PDFInfo
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- CN203603866U CN203603866U CN201320768928.5U CN201320768928U CN203603866U CN 203603866 U CN203603866 U CN 203603866U CN 201320768928 U CN201320768928 U CN 201320768928U CN 203603866 U CN203603866 U CN 203603866U
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- sand control
- pipe
- polymer injection
- sand prevention
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Abstract
The utility model relates to a low-shear layered sand prevention layered polymer injection process pipe column. According to the technical scheme, the pipe column comprises a layered sand prevention pipe column body and a layered polymer injection pipe column body, wherein layered sand prevention pipe column body is formed by a sand prevention suspension packer, a low-shear polymer injection sand prevention pipe, one or more sand prevention layered packers and a sand prevention anchor device; the layered polymer injection pipe column body comprises an oil pipe, layered packers, low-shear polymer injection devices, a check valve, a screen pipe and a pipe plug, the layered packers are arranged between the oil pipe and the layered sand prevention pipe column body, the oil pipe is connected with the low-shear polymer injection devices, and the check valve, the screen pipe and the pipe plug are arranged at the bottom of the oil pipe. The pipe column has the advantages that the requirement of sandstone shakeout and multilayer long-acting layered polymer injection of anisotropism oil reservoirs are met; when polymers pass through the layered sand prevention pipe column body and the layered polymer injection pipe column body, viscosity loss is low, oil displacement efficiency of the polymers is guaranteed, and the problem that according to unconsolidated sandstone reservoirs, due to loosening shakeout, the layered polymer injection service life is short is solved.
Description
Technical field
The utility model relates to the stratified injection tubular pile that a kind of oilfield injection well is used, particularly a kind of low shearing selective sand control layered polymer injection process pipe string.
Background technology
At present, polymer displacement of reservoir oil is to improve oil recovery, the important technical of producing in oil field middle and later periods stable yields, the mining site practice of polymer displacement of reservoir oil mainly concentrates on loose at present, on the strong sandstone oil reservoir of non-homogeneity, shake out because oil reservoir is loose, long-acting poly-with long-life note for ensureing injection well, need to be after sand control completion in advance, carry out again layered polymer injection, chemical sand control field trial has been carried out in oil field, part land at present, but average about 1 year of chemical sand control period of validity, period of validity is shorter, can not meet injection well, the demand of especially marine long-life layered polymer injection technique.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of loose sand oil accumulation that solves is provided, and shakes out, and cause the shorter low shearing selective sand control layered polymer injection process pipe string of layered polymer injection period of validity due to loose.
Its technical scheme is: comprise selective sand control tubing string and stratified injection tubular pile, described selective sand control tubing string is by sand control hanging packer, the poly-sand-proof pipe of low shearing note, one or more sand control layer separating packer, sand control grappling installation composition, be provided with multiple sand control layer separating packers and the poly-sand-proof pipe of low shearing note in the inside of production casing, be provided with sand control anchoring device in the bottom of selective sand control tubing string;
Described stratified injection tubular pile comprises oil pipe, layer separating packer, the poly-device of low shearing note, ball-and-seat, screen casing, plug, between oil pipe and tubing string, be provided with multiple layer separating packers, described oil pipe has connected the poly-device of multiple low shearing note, and the bottom of oil pipe is provided with ball-and-seat, screen casing and plug.
Between above-mentioned sand control hanging packer and sand control anchoring device, be provided with the first sand control layer separating packer and the second sand control layer separating packer.
Between above-mentioned oil pipe and tubing string, be provided with first layer packer, the second layer separating packer and the 3rd layer separating packer.
Above-mentioned oil pipe has connected the poly-device of the first low shearing note, the second poly-device of low shearing note and the poly-device of the 3rd low shearing note.
The beneficial effects of the utility model are: the one, realize that sandstone shakes out, the multilayer of heterogeneous reservoir, long-acting layered polymer injection requirement; The 2nd, to realize polymer and cross sand control and note while gathering tubing string, viscosity loss is little, has ensured the oil displacement efficiency of polymer.Solve loose sand oil accumulation, shaked out due to loose, and cause the shorter problem of layered polymer injection period of validity.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
In upper figure: sand control hanging packer 1, the poly-sand-proof pipe 2 of low shearing note, the first sand control layer separating packer 3, the second sand control layer separating packer 4, sand control anchoring device 5, oil pipe 6, first layer packer 7, the second layer separating packer 9, the 3rd layer separating packer 11, the poly-device 8 of the first low shearing note, the poly-device 10 of the second low shearing note, the poly-device 12 of the 3rd low shearing note, ball-and-seat 13, screen casing 14, plug 15, production casing 16.
The specific embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model comprises selective sand control tubing string and stratified injection tubular pile, described selective sand control tubing string is made up of sand control hanging packer 1, the poly-sand-proof pipe 2 of low shearing note, one or more sand control layer separating packer, sand control anchoring device 5, production casing 16, described production casing 16 inner chambers arrange sand control hanging packer 1 and the poly-sand-proof pipe 2 of low shearing note, the bottom of the poly-sand-proof pipe 2 of low shearing note arranges multiple sand control layer separating packers and the poly-sand-proof pipe of low shearing note, is provided with sand control anchoring device 5 in the bottom of selective sand control tubing string;
Described stratified injection tubular pile comprises oil pipe 6, layer separating packer, the poly-device of low shearing note, ball-and-seat 13, screen casing 14, plug 15, between oil pipe 6 and production casing 16, be provided with multiple layer separating packers, described oil pipe 6 has connected the poly-device of multiple low shearing note, and the bottom of oil pipe 6 is provided with ball-and-seat 13, screen casing 14 and plug 15.
Wherein, the first sand control layer separating packer 3 and the second sand control layer separating packer 4 have been installed between sand control hanging packer 1 and sand control anchoring device 5.Between above-mentioned oil pipe 6 and production casing 16, be provided with first layer packer 7, the second layer separating packer 9 and the 3rd layer separating packer 11.Above-mentioned oil pipe 6 has connected the poly-device 8 of the first low shearing note, the second poly-device 10 of low shearing note and the poly-device 12 of the 3rd low shearing note.
Selective sand control layered polymer injection technique of the present utility model is as follows: be first lowered to the sand control pipe with sand control hanging packer, layer separating packer, the poly-sand-proof pipe of low shearing note and sand control anchoring device, after setting and giving up, formed in down-hole well large, can meet the selective sand control tubing string that the low shearing of polymer is injected.In sand control pipe, be lowered to the instrument such as layer separating packer and low shear flow regulator and realize injection well layered polymer injection.
The sticky loss rate of polymer is low: adopts the poly-sand-proof pipe of low shearing note of seam shape, both met sand production petroleum reservoir sand block requirement, and while meeting again polymer overcurrent, the viscosity machinery low shearing of sand-proof pipe to polymer; Adopt the poly-device of low shearing note, both met the adjusting of the each layer note conflux amount in down-hole, can meet again polymer and cross note to gather the viscosity loss that device is minimum.
Advantage of the present invention is: the one, realize that sandstone shakes out, the multilayer of heterogeneous reservoir, long-acting layered polymer injection requirement; The 2nd, to realize polymer and cross sand control and note while gathering tubing string, viscosity loss is little, has ensured the oil displacement efficiency of polymer.
Claims (4)
1. one kind low shearing selective sand control layered polymer injection process pipe string, it is characterized in that: comprise selective sand control tubing string and stratified injection tubular pile, described selective sand control tubing string is made up of sand control hanging packer (1), the poly-sand-proof pipe (2) of low shearing note, one or more sand control layer separating packer, sand control anchoring device (5), be provided with multiple sand control layer separating packers and the poly-sand-proof pipe of low shearing note in the inside of production casing (16), be provided with sand control anchoring device (5) in the bottom of selective sand control tubing string;
Described stratified injection tubular pile comprises oil pipe (6), layer separating packer, the poly-device of low shearing note, ball-and-seat (13), screen casing (14), plug (15), between oil pipe (6) and production casing (16), be provided with multiple layer separating packers, described oil pipe (6) has connected the poly-device of multiple low shearing note, and the bottom of oil pipe (6) is provided with ball-and-seat (13), screen casing (14) and plug (15).
2. low shearing selective sand control layered polymer injection process pipe string according to claim 1, is characterized in that: between described sand control hanging packer (1) and sand control anchoring device (5), be provided with the first sand control layer separating packer (3) and the second sand control layer separating packer (4).
3. low shearing selective sand control layered polymer injection process pipe string according to claim 1, is characterized in that: between described oil pipe (6) and production casing (16), be provided with first layer packer (7), the second layer separating packer (9) and the 3rd layer separating packer (11).
4. low shearing selective sand control layered polymer injection process pipe string according to claim 1, is characterized in that: described oil pipe (6) has connected the poly-device (8) of the first low shearing note, the second poly-device (10) of low shearing note and the poly-device (12) of the 3rd low shearing note.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768928.5U CN203603866U (en) | 2013-11-29 | 2013-11-29 | Low-shear layered sand prevention layered polymer injection process pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768928.5U CN203603866U (en) | 2013-11-29 | 2013-11-29 | Low-shear layered sand prevention layered polymer injection process pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603866U true CN203603866U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320768928.5U Expired - Fee Related CN203603866U (en) | 2013-11-29 | 2013-11-29 | Low-shear layered sand prevention layered polymer injection process pipe column |
Country Status (1)
| Country | Link |
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| CN (1) | CN203603866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542435A (en) * | 2016-06-29 | 2018-01-05 | 中国石油化工股份有限公司 | The method that selective sand control improves loose sand oil accumulation development effectiveness |
-
2013
- 2013-11-29 CN CN201320768928.5U patent/CN203603866U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542435A (en) * | 2016-06-29 | 2018-01-05 | 中国石油化工股份有限公司 | The method that selective sand control improves loose sand oil accumulation development effectiveness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20161129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |