CN212716568U - Pump-sealing integrated water finding and blocking pipe column - Google Patents
Pump-sealing integrated water finding and blocking pipe column Download PDFInfo
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- CN212716568U CN212716568U CN202021017219.XU CN202021017219U CN212716568U CN 212716568 U CN212716568 U CN 212716568U CN 202021017219 U CN202021017219 U CN 202021017219U CN 212716568 U CN212716568 U CN 212716568U
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Abstract
The utility model provides a pump-sealing integrated water finding and blocking pipe column, which comprises a large number of oil pipes connected in series, an oil well pump, an upper packer and a lower packer which are sequentially connected in series on the oil pipes from top to bottom; a movable bottom plug is arranged below the lower packer; an upper sieve tube and a lower sieve tube are sequentially connected in series on an oil pipe between the upper packer and the lower packer; the upper sieve tube and the lower sieve tube are provided with a sealing separation structure, a pipe section for containing settled sand is arranged between the sealing separation structure and the upper sieve tube, and when sand is produced in an oil layer, sand is deposited in the pipe section between the sealing separation structure and the upper sieve tube, so that the condition that the floating bottom plug is blocked by the floating bottom plug and the failure of the floating bottom plug due to the deposition of the sand is avoided.
Description
Technical Field
The utility model belongs to oil field oil well layering looks for stifled water field, especially relates to a pump seals integrative looks for stifled water pipe post.
Background
In the middle and later stages of oil field development, particularly in the later stage of exploitation of water injection oil field, along with the change of the water content of the stratum, the interval division is thinner and thinner, the contradiction between the layers is more and more prominent, the high and low aquifers coexist, and in order to know the oil layer and stabilize and control oil and water, water plugging operation is often needed. The common tubular column in the water plugging operation is a pump-sealing integrated double-sealing water plugging finding tubular column, the tubular column is sequentially connected with a Y111 packer, a sieve tube, a Y211 packer and a dead plug under a pump, when the lowest layer is produced by single extraction, the tail of an oil tube is connected with the dead plug, and a dead cavity can be formed in a sleeve below the Y211 packer after the two packer seats are sealed, so that a piston effect can be formed in the Y211 packer deblocking process, and deblocking load is increased and deblocking is difficult.
In order to solve the problems, the dead plug connected with the tail of the oil pipe is replaced by a movable bottom plug, the movable bottom plug comprises a piston for adjusting the volume in a sleeve below a packer, the piston can reciprocate up and down in the movable bottom plug, during deblocking, a pipe column is lifted, upper liquid pushes the piston to move downwards, and the space below the packer is reduced, so that the resistance required to be overcome by the piston effect during deblocking of the packer is reduced, the vertical pressure of the piston is balanced, the piston effect is reduced, and the problems of overlarge deblocking load and difficulty in deblocking caused by the piston effect formed during deblocking of the packer are solved. However, when the pipe column is used, particularly when sand is produced in an oil layer, the produced liquid of the oil layer with the sand enters the oil pipe from the sieve pipe and then enters the oil well pump to realize production operation, the sand in the produced liquid of the oil layer is easy to deposit in the moving bottom plug, and the moving bottom plug is blocked after the sand is deposited to a certain degree, so that the moving bottom plug is invalid.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pump seals integrative looks for stifled water pipe post to the grit deposit in solving the liquid leads to moving about the problem of end stifled inefficacy in moving about end stifled.
In order to achieve the above purpose, the utility model discloses pump seals integrative technical scheme who looks for stifled water pipe post does:
a pump seals integrative looking for stifled water pipe post, includes:
a large number of oil pipes connected in series, and an oil pump, an upper packer and a lower packer which are sequentially connected in series on the oil pipes from top to bottom;
a movable bottom plug is arranged below the lower packer;
an upper sieve tube and a lower sieve tube are sequentially connected in series on an oil pipe between the upper packer and the lower packer;
a sealing separation structure is arranged between the upper sieve tube and the lower sieve tube, and a tube section for containing settled sand is arranged between the sealing separation structure and the upper sieve tube.
Has the advantages that: add sealed separation structure and sieve tube down in proper order between the screen pipe of integrative two seals of looking for stifled tubular column of water at current pump seal and the packer down, the lower screen pipe uses with the lower stifled cooperation of moving about of the below of packer, forms piston effect when avoiding the packer deblocking, solves the problem that the deblocking load is too big, the deblocking is difficult. Meanwhile, a sealing separation structure is arranged between the upper sieve tube and the lower sieve tube, a pipe section for containing settled sand is arranged between the sealing separation structure and the upper sieve tube, when the oil well pump works, oil layer produced liquid enters the oil well pump through the upper sieve tube to realize production operation, no oil layer produced liquid flows in the lower sieve tube, and at the moment, if the oil layer is sand-out, sand is deposited in the pipe section between the sealing separation structure and the upper sieve tube, so that the phenomenon that the piston is clamped in the moving bottom plug due to the falling deposition of the sand, and the failure of the moving bottom plug is caused is avoided.
Further, the sealing and separating structure is a dead plug between the upper screen pipe and the lower screen pipe.
Has the advantages that: when the sealing separation structure is arranged, common dead plugs in a pipe column structure are directly connected in series between the upper sieve pipe and the lower sieve pipe to realize the sealing separation between the upper sieve pipe and the lower sieve pipe, and the arrangement is simple and convenient.
Furthermore, the screen pipe is connected with the dead plug in series through at least one oil pipe, and the oil pipe between the screen pipe and the dead plug is used for containing settled sand.
Has the advantages that: the upper sieve tube and the dead plug are connected in series through at least one oil tube, the operation is simple and convenient, and meanwhile, the structure for accommodating settled sand by using the oil tube between the upper sieve tube and the dead plug is simple.
Further, the lower sieve tube is connected to the lower end of the dead plug.
Has the advantages that: an oil pipe does not need to be connected between the screen pipe and the dead plug, so that the arrangement of the pump-sealing integrated water plugging pipe column is simpler.
The floating bottom plug is connected with the lower end of the lower packer.
Has the advantages that: an oil pipe does not need to be connected between the lower packer and the floating bottom plug, so that the arrangement of the pump-sealing integrated water plugging pipe column is simpler.
The lower sieve tube is connected with the lower packer in series through a pipe section.
Has the advantages that: the lower sieve tube communicates the upper oil sleeve annulus of the lower packer with the tubular column inner cavity on the upper part of the traveling bottom plug, when the packer is unpacked, the tubular column is lifted, the liquid in the upper oil sleeve annulus of the lower packer enters the tubular column inner cavity on the upper part of the traveling bottom plug through the lower sieve tube, the piston in the traveling bottom plug is pushed to move downwards, the space below the lower packer is reduced, and therefore the resistance which needs to be overcome due to the piston effect when the packer is unpacked is reduced, and the packer is conveniently unpacked. In addition, the lower sieve tube is connected with the lower packer in series through a pipe section, so that the condition that the lower sieve tube cannot work due to the blocking of deep deposits in the annular space of the oil sleeve on the upper part of the lower packer can be effectively prevented.
Drawings
FIG. 1 is a schematic structural view of a pump-sealing integrated water plugging pipe column of the present invention in use;
fig. 2 is a schematic structural view of the middle floating bottom plug of the present invention.
In the figure: 1-a sleeve; 2-oil well pump; 3-oil pipe; 4-installing a packer and 5-installing a sieve tube; 6-blocking; 7-screen pipe laying; 8-lower packer; 9-floating bottom block; 10-oil layer; 11-a pressure spring; 12-a piston; 13-oil pipe port; 14-internal thread segment; 15-inner convex ring; 16-a sleeve-shaped shell; 17-O-ring seal; 18-a baffle ring; 19-sleeve communication port.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
The utility model discloses a pump seals integrative concrete embodiment who looks for stifled water pipe post is shown in fig. 1-2, including connecting oil-well pump 2 on oil pipe 3, this oil pipe 3 is connected with last packer 4 and lower packer 8 that the interval set up about oil-well pump 2 below, goes up packer 4 and packer 8 down and is used for separating oil reservoir 10. The oil pipe 3 is also connected with an upper sieve pipe 5 and a lower sieve pipe 7, the upper sieve pipe 5 and the lower sieve pipe 7 are both positioned between an upper packer 4 and a lower packer 8, a sealing separation structure is arranged between the upper sieve pipe 5 and the lower sieve pipe 7, and the sealing separation between the upper sieve pipe 5 and the lower sieve pipe 7 is realized.
The lower end of the lower packer 8 is connected with a floating bottom plug 9, the lower screen pipe 7 is connected with the lower packer 8 in series through the oil pipe 3, and in the embodiment, the oil pipe 3 is a pipe section connected between the lower screen pipe 7 and the lower packer 8.
Specifically, the floating bottom plug 9 comprises a vertically extending sleeve-shaped shell 16, an oil pipe through hole 13 communicated with the oil pipe 3 is formed in the upper end of the sleeve-shaped shell 16, and a sleeve pipe communication hole 19 communicated with an oil sleeve annulus below the lower packer 8 is formed in the lower end of the sleeve-shaped shell 16. The upper end of the casing body is provided with an internal thread section 14, and the casing-shaped casing body 16 is in threaded connection with the oil pipe 3 through the internal thread section 14. The sleeve-shaped shell 16 is internally provided with a piston 12 in a sealing and sliding way, and the piston 12 is provided with two O-shaped sealing rings 17 to realize sliding sealing matching with the sleeve-shaped shell 16. The piston 12, when moving up and down in the casing housing 16, is able to adjust the internal volume of the casing 1 below the packer and thereby change the packer lower hydraulic pressure.
The piston 12 has an upper limit position and a lower limit position in a reciprocating stroke, an inner annular ring 15 is arranged on the inner wall surface of the sleeve-shaped shell 16, the inner annular ring 15 is positioned at the lower side of the internal thread section 14, a pressure spring 11 is clamped between the inner annular ring 15 and the piston 12, and the pressure spring 11 applies acting force to the piston 12 towards a sleeve communicating opening 19. A stop ring 18 for limiting the downward movement stroke of the piston 12 is arranged below the piston 12 in the sleeve-shaped shell 16, and before the packer is set, the piston 12 is propped against the stop ring 18 under the action of the pressure spring 11 and is positioned at the lower limit position, namely the initial position of the piston 12. The stop ring 18 prevents the piston 12 from falling out of the lower portion of the sleeve-like housing 16 during downward movement. To facilitate assembly of the piston 12 and compression spring 11, a retainer ring 18 is threadably connected to the sleeve housing 16.
Will during the use the utility model discloses a pump seals an organic whole and looks for the design degree of depth in the well under the water shutoff tubular column, goes into the in-process and moves about the piston 12 among the end blocking 9 and bears ascending hydraulic impact, and the pressure spring 11 can provide piston 12 and hydraulic impact opposite direction's effort and prevent that piston 12 from moving up to extremely spacing this moment, and piston 12 goes upward and provides the space when sealing for the packer seat. Setting and unsetting of packer are all accomplished in fixed stroke, setting packer when single-production lower floor oil reservoir 10, lift the tubular column 0.8m to 1.2m, lower tubular column again, packer 4, lower packer 8 are sealed to the seat, 8 lower part oil jacket annuluses of lower packer receive the extrusion, lower part liquid is pushing away piston 12 and is overcoming the effort rebound of pressure spring 11, packer below space has been increased, thereby packer lower part liquid pressure has been reduced, compare original bottom blocking, it is favorable to packer setting to move about bottom blocking 9, at this moment, liquid in the lower packer 8 on piston 12 upper portion and the liquid in the oil pipe 3 between lower packer 8 and lower sieve pipe 7 flow into sleeve pipe 1 from lower sieve pipe 7. When the deblocking is carried out, the pipe column is lifted, the upper packer 4 and the lower packer 8 both move upwards to the deblocking position, the piston 12 is pushed to move downwards under the combined action of liquid in the oil pipe 3 between the lower sieve pipe 7 and the lower packer 8 and liquid in the lower packer 8, the pressure spring 11 and negative pressure in a sleeve below the lower packer, the space below the lower packer 8 is reduced, the deblocking load is the resistance needing to be overcome due to the piston effect when the deblocking is reduced, the upper pressure and the lower pressure of the piston 12 are balanced, and the piston effect is reduced.
The upper sieve tube 5 and the lower sieve tube 7 are connected on the oil tube 3, the dead plug 6 is connected between the upper sieve tube 5 and the lower sieve tube 7, the oil tube 3 is connected between the upper sieve tube 5 and the dead plug 6, when the oil well pump 2 works, oil production liquid enters the oil well pump 2 through the upper sieve tube 5 above the dead plug 6 to realize production operation, and the lower sieve tube 7 does not have the flow of the oil production liquid, at the moment, if sand is produced from an oil layer 10, sand is deposited in the oil tube 3 between the dead plug 6 and the upper sieve tube 5, the upper sieve tube 5 can be prevented from being blocked by the sand, and the piston 12 can be prevented from being blocked by the sand deposited on the piston 12 of the moving bottom plug 9 to cause the failure of the moving bottom plug 9.
In the embodiment, the sealing separation structure is a dead plug connected between the upper sieve tube and the lower sieve tube, in other embodiments, the sealing separation structure can also be a separation blade welded in an oil tube between the upper sieve tube and the lower sieve tube, the separation blade is positioned at a position of the oil tube close to the lower sieve tube, and the separation blade separates an inner cavity of the oil tube, so that the inner cavity of the oil tube above the separation blade forms a tube section for containing settled sand.
In the embodiment, the upper sieve tube and the dead plug are connected in series through one oil pipe, the oil pipe between the upper sieve tube and the dead plug is used for containing settled sand, in other embodiments, the upper sieve tube and the dead plug are connected in series through more than two oil pipes, and the oil pipe between the upper sieve tube and the dead plug is used for containing settled sand.
In this embodiment, the lower screen pipe is connected to the lower end of the dead plug, and in other embodiments, the lower screen pipe may be connected to the lower end of the dead plug through an oil pipe.
In the embodiment, the movable bottom plug is connected to the lower end of the lower packer, in other embodiments, the lower end of the packer is connected to an oil pipe, and the lower end of the oil pipe is connected to the movable bottom plug.
In this embodiment, the screen pipe and the packer pass through the pipeline section series connection down, and in other embodiments, the lower end at the screen pipe is connected to the packer down, and when the deblocking, oil pipe lifts, goes up the packer and all shifts up to the deblocking position with packer down, and liquid in the packer down, pressure spring, promote the piston to remove under the combined action of the negative pressure in the sleeve pipe of packer below down, can prevent effectively that packer lower part sleeve pipe inner chamber evacuation from down, produce piston effect, lead to oil pipe to pull out motionless unable deblocking.
Claims (6)
1. The utility model provides a pump seals integrative looks for stifled water pipe post, characterized by includes:
a large number of oil pipes connected in series, and an oil pump, an upper packer and a lower packer which are sequentially connected in series on the oil pipes from top to bottom;
a movable bottom plug is arranged below the lower packer;
an upper sieve tube and a lower sieve tube are sequentially connected in series on an oil pipe between the upper packer and the lower packer;
a sealing separation structure is arranged between the upper sieve tube and the lower sieve tube, and a tube section for containing settled sand is arranged between the sealing separation structure and the upper sieve tube.
2. The pump seal integrated water finding and plugging pipe column as claimed in claim 1, wherein the seal separation structure is a dead plug between an upper screen pipe and a lower screen pipe.
3. The pump-seal integrated water finding and plugging pipe column as claimed in claim 2, wherein the upper sieve pipe and the dead plug are connected in series through at least one oil pipe, and the oil pipe between the upper sieve pipe and the dead plug is used for containing settled sand.
4. The pump sealing integrated water finding and blocking pipe column as claimed in claim 2 or 3, wherein the lower sieve pipe is connected to the lower end of the dead block.
5. The pump-seal integrated water finding and blocking pipe column as claimed in any one of claims 1 to 3, wherein the floating bottom plug is connected to the lower end of the lower packer.
6. The pump-seal integrated water finding and blocking pipe column as claimed in any one of claims 1 to 3, wherein the lower sieve pipe and the lower packer are connected in series through a pipe section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021017219.XU CN212716568U (en) | 2020-06-05 | 2020-06-05 | Pump-sealing integrated water finding and blocking pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021017219.XU CN212716568U (en) | 2020-06-05 | 2020-06-05 | Pump-sealing integrated water finding and blocking pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212716568U true CN212716568U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021017219.XU Active CN212716568U (en) | 2020-06-05 | 2020-06-05 | Pump-sealing integrated water finding and blocking pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212716568U (en) |
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2020
- 2020-06-05 CN CN202021017219.XU patent/CN212716568U/en active Active
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