CN205422668U - Water injection string pressure telescopic compensator - Google Patents
Water injection string pressure telescopic compensator Download PDFInfo
- Publication number
- CN205422668U CN205422668U CN201620287395.2U CN201620287395U CN205422668U CN 205422668 U CN205422668 U CN 205422668U CN 201620287395 U CN201620287395 U CN 201620287395U CN 205422668 U CN205422668 U CN 205422668U
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- plunger
- water injection
- connecting tube
- telescopic
- rotation connecting
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Abstract
The utility model provides a there is outer UNICOM hole under the screw thread of upper portion that water injection string pressure telescopic compensator, the lower part of telescopic plunger is connected with the upper portion of plunger, the lower part of plunger is connected with preventing the upper portion of changeing the connecting pipe, the lower part of urceolus is connected with the upper portion of connector, the sealing washer is installed to urceolus, connector suit on the inner wall of connector outside the telescopic plunger, the pneumatic cylinder suit outside the plunger, sealing washer in the middle of the outer wall mounting of plunger, the upper portion of pneumatic cylinder is connected in the lower part of connector, the pneumatic cylinder outer UNICOM hole be in middle sealing washer on, in the A section of seal receptacle suit on preventing changeing the connecting pipe, the sub -unit connection of seal receptacle and pneumatic cylinder, the interior wall mounting lower seal circle of seal receptacle has compensated the flexible of water injection string down in the poor effect of the area of telescopic plunger and plunger, makes to connect and does not wriggle at its packer down, can prevent that the packer from damaging, can prevent that the packer from being damaged, water injection well reliably seperated layer water injection for a long time, effect that improvement oil -field flooding was developed.
Description
Technical field
This utility model belongs to the device of the axial force that oilfield oil well tubing string balance water injection pressure causes, and is a kind of water injection string pressure telescopic compensator.
Background technology
In separated-zone water infection oil field tubing string, under entered the multiple-string packer being relatively large in diameter, due to interlayer pressure difference, after packer set water filling, downward axial force can be produced, make tubing string with the packer play after setting, now tightly it is attached on the inwall of sleeve pipe due to packer, when water injection string is with packer play after setting, packing element at the effect lower packet of stiction is sheared, and is easily torn, causes water injection string to damage, seperated layer water injection can not be realized, do not reach the effect of waterflooding extraction.Water filling and stop note during water injection string also can be made to elongate or shorten, cause water injection packer to wriggle, the problem that above-mentioned existence also can occur.For solving this problem, it is usually on water injection packer and compensator is installed.But current compensator structure is too simple, does not compensate function, will not produce displacement when pressure changes, not having and prevent from producing between packer and sleeve pipe displacement and displacement trend, still there is the power sheared in the packing element of packer, equally exists above-mentioned problem.
Summary of the invention
The purpose of this utility model is a kind of water injection string pressure telescopic compensator of design, the problem overcoming above-mentioned existence, the flexible of water injection string can be compensated under the effect of pressure differential, packer is avoided to wriggle, prevent packer damaged, make water injection well seperated layer water injection reliably and with long-term, improve the effect of water flooding.
nullThe purpose of this utility model is achieved in that and includes urceolus、Telescopic plunger、Union joint、Upper sealing ring、Intermediate seal circle、Plunger、Hydraulic cylinder、Anti-rotation connecting tube、Seal receptacle、Lower seal，The bottom of telescopic plunger is connected with the top of plunger，The bottom of plunger is connected with the top of anti-rotation connecting tube，The bottom of urceolus is connected with the top of union joint，Urceolus、Union joint is sleeved on outside telescopic plunger，Sealing ring is installed on the inwall of union joint，Upper sealing ring seals the gap between telescopic plunger and union joint，Hydraulic cylinder is contained in outside plunger，Intermediate seal circle is installed on the outer wall of plunger，Gap between sealed plunger and hydraulic cylinder，The top of hydraulic cylinder is connected to the bottom of union joint，Outer linked hole is had under the top screw thread of hydraulic cylinder，The described through hole that outreaches is on intermediate seal circle，Sealed socket sleeve is contained in the A section in anti-rotation connecting tube，Seal receptacle is connected with the bottom of hydraulic cylinder，Lower seal is installed on the inwall of seal receptacle，Lower seal seals the gap between anti-rotation connecting tube and seal receptacle.
The B section more than described A section diameter is had in anti-rotation connecting tube, the diameter of described B section is more than the top diameter of thread of anti-rotation connecting tube, described B section arranges vertical-shaped groove, anti-rotation pin is placed in jack on the top screw thread of seal receptacle, the axis of anti-rotation pin is vertical with the axis of anti-rotation connecting tube, the front end of anti-rotation pin is in described vertical-shaped groove, and the tail end of anti-rotation pin is surrounded by the inwall of hydraulic cylinder, makes anti-rotation pin can not exit from described vertical-shaped groove.
The top of the described B section in anti-rotation connecting tube has interior linked hole, described interior linked hole to make the inside UNICOM of the toroidal cavity between hydraulic cylinder and anti-rotation connecting tube and anti-rotation connecting tube.
The top of telescopic plunger connects top connection, and described junction keeps sealing, and oil pipe female thread is arranged at the top of top connection.
The bottom of anti-rotation connecting tube connects lower contact, described junctionKeep sealing, oil tube external thread is arranged at the bottom of lower contact.
When telescopic plunger is in initial point, telescopic plunger is under the upper surface of urceolus, and telescopic plunger does not reach outside the upper surface of urceolus.
The beneficial effects of the utility model are: when going into the well, this utility model is in extended state, the packer being connected to bottom before water filling is in setting state, during water filling, internal pressure raises and makes water injection string wriggle, pressure is transmitted through interior linked hole, under the difference in areas effect of telescopic plunger and plunger, only urceolus, union joint, hydraulic cylinder, seal receptacle moves down with tubing string, telescopic plunger, anti-rotation connecting tube is motionless, compensate for the flexible of water injection string, make the packer being connected under it motionless, avoid packer to wriggle, it is possible to prevent packer damaged, water injection well can seperated layer water injection reliably and with long-term, substantially increase the effect of water flooding, there is significant economic benefit.
Accompanying drawing explanation
Accompanying drawing 1 is installation diagram when being in indentation state of the present utility model.
Detailed description of the invention
1 embodiment of the present utility model is illustrated below in conjunction with the accompanying drawings.
nullAs shown in the figure，Embodiment of the present utility model includes top connection 1、Urceolus 2、Telescopic plunger 3、Union joint 4、Upper sealing ring 5、Intermediate seal circle 7、Plunger 8、Hydraulic cylinder 9、Anti-rotation connecting tube 10、Anti-rotation pin 12、Seal receptacle 13、Lower seal 14，The bottom of telescopic plunger 3 is connected with the top of plunger 8，Junction keeps sealing (being realized sealing by sealing ring)，The bottom of plunger 8 is connected with the top of anti-rotation connecting tube 10，The bottom of urceolus 2 is connected with the top of union joint 4，Junction keeps sealing (being realized sealing by sealing ring)，Urceolus 2、Union joint 4 is sleeved on outside telescopic plunger 3，Sealing ring 5 is installed on the inwall of union joint 4，Upper sealing ring 5 seals the gap between telescopic plunger 3 and union joint 4，Hydraulic cylinder 9 is sleeved on outside plunger 8，Intermediate seal circle 7 is installed on the outer wall of plunger 8，Gap between sealed plunger 8 and hydraulic cylinder 9，The top of hydraulic cylinder 9 is connected to the bottom of union joint 4，Outer linked hole 6 is had under the top screw thread of hydraulic cylinder 9，Play the effect of balance pressure，Described outer linked hole 6 is on intermediate seal circle 7，Seal receptacle 13 is sleeved in the A section in anti-rotation connecting tube，Seal receptacle 13 is connected with the bottom of hydraulic cylinder 9，Junction keeps sealing (being realized sealing by sealing ring)，Lower seal 14 is installed on the inwall of seal receptacle 13，Lower seal 14 seals the gap between anti-rotation connecting tube 10 and seal receptacle 13.
The B section more than described A section diameter is had in anti-rotation connecting tube 10, the diameter of described B section is more than the top diameter of thread of anti-rotation connecting tube 10, described B section arranges vertical-shaped groove 11, anti-rotation pin 12 is placed in jack on the top screw thread of seal receptacle 13, the axis of anti-rotation pin 12 is vertical with the axis of anti-rotation connecting tube 10, the front end of anti-rotation pin 12 is in described vertical-shaped groove 11, the tail end of anti-rotation pin 12 is surrounded by the inwall of hydraulic cylinder 9, makes anti-rotation pin 12 can not exit from described vertical-shaped groove 11.This design is to ensure that whole water injection string can transmit moment of torsion, makes lower subjob carry pipe and can be rotated water injection pipe card-dispelling tubular pile after card.Having in anti-rotation connecting tube 10 more than the B section of described A section diameter is the intensity in order to increase this section so that it is also can guarantee that enough resistance to tensions processing above-mentioned vertical-shaped groove 11.
The top of the described B section in anti-rotation connecting tube 10 has interior linked hole 16, described interior linked hole 16 to make the inside UNICOM of the toroidal cavity 17 between hydraulic cylinder 9 and anti-rotation connecting tube 10 and anti-rotation connecting tube 10.
The top of telescopic plunger 3 connects top connection 1, and described junction keeps sealing, and oil pipe female thread is arranged at the top of top connection 1.When the inside of telescopic plunger 3 need not down other instrument, urceolus 2 can select the steel pipe identical with water injection pipe external diameter, and the most directly processing connects the tubing round thread on top, and this size design just can be without top connection 1.
The bottom of anti-rotation connecting tube 10 connects lower contact 15, described junctionKeep sealing, oil tube external thread is arranged at the bottom of lower contact 15.When the inside of telescopic plunger 3 need not down other instrument, anti-rotation connecting tube 10 can select the steel pipe that lower tool matches, and the most directly processing connects the screw thread of lower tool, and this size design just can be without top connection 15.
When telescopic plunger 3 is in initial point, telescopic plunger 3 is under the upper surface of urceolus 2, and telescopic plunger 3 does not reach outside the upper surface of urceolus 2, prevents telescopic plunger 3 from keeping away damage in being in water injection pipe thereon.
When going into the well, this utility model is in extended state, during stretching, the upper end surface of telescopic plunger 3 is on upper sealing ring 5, the packer being connected to bottom before water filling is in setting state, during water filling, internal pressure raises and makes water injection string wriggle, pressure is transmitted through interior linked hole 16, under the difference in areas effect of stretch 3 and plunger 8, only urceolus 2, union joint 4, hydraulic cylinder 9, seal receptacle 13 moves down with tubing string, telescopic plunger 3, anti-rotation connecting tube 10 is motionless, compensate for the flexible of water injection string, make the packer being connected under it motionless, avoid packer to wriggle, it is possible to prevent packer damaged.
Claims (6)
- null1. a water injection string pressure telescopic compensator，Including urceolus (2)、Telescopic plunger (3)、Union joint (4)、Upper sealing ring (5)、Intermediate seal circle (7)、Plunger (8)、Hydraulic cylinder (9)、Anti-rotation connecting tube (10)、Seal receptacle (13)、Lower seal (14)，It is characterized in that: the bottom of telescopic plunger (3) is connected with the top of plunger (8)，The bottom of plunger (8) is connected with the top of anti-rotation connecting tube (10)，The bottom of urceolus (2) is connected with the top of union joint (4)，Urceolus (2)、Union joint (4) is sleeved on telescopic plunger (3) outward，Sealing ring (5) is installed on the inwall of union joint (4)，Upper sealing ring (5) seals the gap between telescopic plunger (3) and union joint (4)，Hydraulic cylinder (9) is sleeved on plunger (8) outward，Intermediate seal circle (7) is installed on the outer wall of plunger (8)，Gap between sealed plunger (8) and hydraulic cylinder (9)，The top of hydraulic cylinder (9) is connected to the bottom of union joint (4)，Outer linked hole (6) is had under the top screw thread of hydraulic cylinder (9)，Described outer linked hole (6) is on intermediate seal circle (7)，Seal receptacle (13) is sleeved in the A section in anti-rotation connecting tube (10)，Seal receptacle (13) is connected with the bottom of hydraulic cylinder (9)，Lower seal (14) is installed on the inwall of seal receptacle (13)，Lower seal (14) seals the gap between anti-rotation connecting tube (10) and seal receptacle (13).
- A kind of water injection string pressure telescopic compensator the most according to claim 1, it is characterized in that: in anti-rotation connecting tube (10), have the B section more than described A section diameter, the diameter of described B section is more than the top diameter of thread of anti-rotation connecting tube (10), described B section arranges vertical-shaped groove (11), anti-rotation pin (12) is placed in jack on the top screw thread of seal receptacle (13), the axis of anti-rotation pin (12) is vertical with the axis of anti-rotation connecting tube (10), it is inner that the front end of anti-rotation pin (12) is in described vertical-shaped groove (11), the tail end of anti-rotation pin (12) is surrounded by the inwall of hydraulic cylinder (9), make anti-rotation pin (12) can not exit from described vertical-shaped groove (11) is.
- A kind of water injection string pressure telescopic compensator the most according to claim 2, it is characterized in that: the top of the described B section in anti-rotation connecting tube (10) has interior linked hole (16), described interior linked hole (16) to make the inside UNICOM of the toroidal cavity (17) between hydraulic cylinder (9) and anti-rotation connecting tube (10) and anti-rotation connecting tube (10).
- A kind of water injection string pressure telescopic compensator the most according to claim 3, is characterized in that: the top of telescopic plunger (3) connects top connection (1), and described junction keeps sealing, and oil pipe female thread is arranged at the top of top connection (1).
- A kind of water injection string pressure telescopic compensator the most according to claim 3, is characterized in that: the bottom of anti-rotation connecting tube (10) connects lower contact (15), described junctionKeep sealing, oil tube external thread is arranged at the bottom of lower contact (15).
- A kind of water injection string pressure telescopic compensator the most according to claim 3, it is characterized in that: when telescopic plunger (3) is in initial point, telescopic plunger (3) is under the upper surface of urceolus (2), and telescopic plunger (3) does not reach outside the upper surface of urceolus (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620287395.2U CN205422668U (en) | 2016-04-08 | 2016-04-08 | Water injection string pressure telescopic compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620287395.2U CN205422668U (en) | 2016-04-08 | 2016-04-08 | Water injection string pressure telescopic compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205422668U true CN205422668U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620287395.2U Active CN205422668U (en) | 2016-04-08 | 2016-04-08 | Water injection string pressure telescopic compensator |
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| CN (1) | CN205422668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649586A (en) * | 2016-04-08 | 2016-06-08 | 中国石油化工股份有限公司 | Pressure extension and retraction compensator for water injection tubular column |
-
2016
- 2016-04-08 CN CN201620287395.2U patent/CN205422668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649586A (en) * | 2016-04-08 | 2016-06-08 | 中国石油化工股份有限公司 | Pressure extension and retraction compensator for water injection tubular column |
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| GR01 | Patent grant |