CN204175230U - Constant pressure stepped-depacking packer - Google Patents
Constant pressure stepped-depacking packer Download PDFInfo
- Publication number
- CN204175230U CN204175230U CN201420559801.7U CN201420559801U CN204175230U CN 204175230 U CN204175230 U CN 204175230U CN 201420559801 U CN201420559801 U CN 201420559801U CN 204175230 U CN204175230 U CN 204175230U
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- central tube
- piston
- outside
- well
- joint sleeve
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- Withdrawn - After Issue
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Abstract
A kind of constant pressure stepped-depacking packer, is characterized in that: comprise top connection, upper joint sleeve, boosting piston, deblocking pin, central tube, spring, well-flushing piston, pressure cap, joint ring, base, exterior central tube, upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder, lower joint sleeve, set piston, jump ring cover, clip spring seat, jump ring, set pin and lower contact.It is excellent that it has heatproof load performance, can remove smoothly in oil well, can realize the advantage of deblocking in well from top to bottom step by step simultaneously.Conventional gradually deblocking packer can being avoided when setting simultaneously, because the excessive deblocking pin 4 of load is cut off in advance, causing the problem of packer from opening in advance.
Description
Technical field
The utility model relates to a kind of novel stepped-depacking packer, specifically a kind of constant pressure stepped-depacking packer.
Background technology
At present, Y341 well packer capable of flushing well can only meet the requirement of two to the three layers of separate layer water injection string in oil field substantially, and depositing uses multiple-string packer.When multistage water injection inspection string operation, multiple packer needs a deblocking, and the deblocking power of each packer is 5-6 ton, three need more than 18 tons with the deblocking power of upper packer, add tubing string self gravitation, by 30 tons of ultimate tensions close to workover rig, site operation risk is larger.And conventional gradually deblocking packer due to when setting deblocking pin can bear larger load, the deblocking pin easily occurring in packer when setting is cut off in advance, causes the problem of packer from opening in advance.
Summary of the invention
The purpose of this utility model is to provide a kind of novel stepped-depacking packer, solves the problem that deblocking in advance easily occurs separated-zone water infection oil field well gradually deblocking packer, and realizes the object that multiple-string packer reaches classification deblocking from top to bottom successively.
The technical solution of the utility model is: a kind of novel stepped-depacking packer, it is characterized in that: comprise top connection, upper joint sleeve, boosting piston, deblocking pin, central tube, spring, well-flushing piston, pressure cap, joint ring, base, exterior central tube, upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder, lower joint sleeve, set piston, jump ring cover, clip spring seat, jump ring, set pin and lower contact, the wall of top connection is uniformly distributed along the circumference four hollow holes, at each hollow hole built with a boosting piston, top connection is enclosed within outside the upper end of central tube, and deblocking pin is installed between top connection and central tube, spring housing is contained in outside central tube, makes the upper end of spring withstand on the lower end of top connection, well-flushing piston bush is outside central tube, the upper end of well-flushing piston and the lower end in contact of spring, upper joint sleeve is enclosed within the outside of boosting piston, deblocking pin, central tube, spring and well-flushing piston, and the upper end of upper joint sleeve is contacted with the leave from office terrace of the outward flange on top connection top, the internal thread of pressure cap bottom is connected with the external screw thread on base top, and the joint ring that the upper inner of pressure cap will be positioned at base top compresses, and becomes to coordinate squeezed state with joint ring, and pressure cap is inserted in central tube and extrusion spring makes it to become compressive state, in the bottom of upper joint sleeve, the position corresponded between pressure cap and well-flushing piston is circumferentially provided with radial well washing hole, the outside of base and the lower end inside of upper joint sleeve are threaded connection, exterior central tube is enclosed within outside central tube, the upper end of exterior central tube and the interior side contacts of base bottom, and upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder are enclosed within outside exterior central tube from top to bottom successively, the upper end of lower joint sleeve is enclosed within outside exterior central tube, and with the lower end in contact of lower rubber cylinder, exterior central tube and between lower joint sleeve and central tube gap as well-flushing passage, set piston bush outside central tube, and be threaded with the lower end of lower joint sleeve, inlet opening is provided with corresponding to setting piston place at central tube, jump ring is contained in the cannelure outside clip spring seat, and clip spring seat is enclosed within outside central tube, and is sitting on the step surface outside central tube, and the upper end of this clip spring seat is relative with the lower end setting piston, the top of jump ring cover is enclosed within the outside setting piston and clip spring seat, and is threaded connection with the outside setting piston, the draw-in groove of the inverted trapezoidal that a few row coordinates with jump ring is provided with in the inner side of jump ring cover lower end, the upper inner of lower contact is threaded with the lower end outside of central tube, and the lower end that jump ring is overlapped is sleeved on the undergauge step place of lower contact upper end, install in the lower end of jump ring cover and the upper end socket place of lower contact and set pin, sawtooth tooth is provided with in the inner side of piston.The wall of the central tube at corresponding spring place is provided with radial direction through hole.
The beneficial effects of the utility model are: it is excellent that it has heatproof load performance, can remove smoothly in oil well, can realize the advantage of deblocking in well from top to bottom step by step simultaneously; Conventional gradually deblocking packer can being avoided when setting simultaneously, because the excessive deblocking pin of load is cut off in advance, causing the phenomenon of packer from opening in advance.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Detailed description of the invention
See Fig. 1, a kind of novel stepped-depacking packer of the utility model, comprises top connection 1, upper joint sleeve 2, boosting piston 3, deblocking pin 4, central tube 5, spring 6, well-flushing piston 7, pressure cap 8, joint ring 9, base 10, exterior central tube 11, upper packing element 12, upper baffle ring 13, middle packing element 14, lower baffle ring 15, lower rubber cylinder 16, lower joint sleeve 17, sets piston 18, jump ring cover 19, clip spring seat 20, jump ring 21, sets pin 22 and lower contact 23 forms.First (be uniformly distributed along the circumference four hollow holes on the wall of top connection 1 afterwards 4 boosting pistons 3 to be loaded top connection 1, at each hollow hole built with a boosting piston 3), top connection 1 is enclosed within central tube 5, and deblocking pin 4 is installed, spring 6 is inserted on central tube 5, makes the upper end of spring 6 withstand on the lower end of top connection 1.Well-flushing piston 7 is enclosed within outside central tube 5, the upper end of well-flushing piston 7 and the lower end in contact of spring 6, upper joint sleeve 2 is enclosed within the outside of boosting piston 3, deblocking pin 4, central tube 5, spring 6, well-flushing piston 7, and the upper end of upper joint sleeve 2 is contacted with the leave from office terrace of the outward flange 29 on top connection 1 top.The external screw thread of the internal thread of pressure cap 8 bottom with base 10 top is connected, the joint ring 9 being positioned at base 10 top compresses by the upper inner of pressure cap 8, and coordinate after squeezed state with joint ring 9 one-tenth, pressure cap 8 is inserted in central tube 5 extrusion spring 6 and makes it to become compressive state.The outside of base 10 and the lower end inside of upper joint sleeve 2 are threaded connection, exterior central tube 11 is enclosed within the outside in the middle part of central tube 5, the upper end of exterior central tube 11 and the interior side contacts of base 10 bottom, be enclosed within outside exterior central tube 11 from top to bottom successively by upper packing element 12, upper baffle ring 13, middle packing element 14, lower baffle ring 15, lower rubber cylinder 16.The upper end of lower joint sleeve 17 is enclosed within outside exterior central tube 11, and with the lower end in contact of lower rubber cylinder 16.Piston 18 will be set be enclosed within outside central tube 5, and be threaded with the lower end of lower joint sleeve 17; Inlet opening 25 is provided with corresponding to setting piston 18 place at central tube 5.Be contained in by jump ring 21 after on clip spring seat 20, be enclosed within outside central tube 5, and be sitting on the step surface 24 outside central tube 5, the upper end of this clip spring seat 20 is relative with the lower end setting piston 18.The top of jump ring cover 19 is enclosed within the outside setting piston 18 and clip spring seat 20, and is threaded connection with the outside setting piston 18.The upper inner of lower contact 23 is threaded with the lower end outside of central tube 5, and the lower end making jump ring overlap 19 is sleeved on the undergauge step place of lower contact 23 upper end, installs set pin 22 in the jump ring cover lower end of 19 and the upper end socket place of lower contact 23.Sawtooth tooth is provided with in the inner side of piston 3.The draw-in groove 32 of the inverted trapezoidal that a few row coordinates with jump ring 21 is provided with in the inner side that jump ring overlaps 19 lower ends.
In upper packing element 12, middle packing element 14 and lower rubber cylinder 16; middle packing element 14 elasticity is larger; packing stratum when primary responsibility sets; two limit packing elements (upper packing element 12 and lower rubber cylinder 16) mainly shield; two limit packing elements due to structure design reason elasticity less; when packer setting, first compressive force is applied on the packing element of limit, then by limit packing element, part power is passed to middle packing element, and preventing compressive force to cross in ambassador, packing element distortion is excessive causes damage.
Operating principle of the present utility model is:
When setting, to oil pipe, (G.I.H connects 2 of packer
7/
8) suppress, hydraulic pressure acts on through central tube 5 lower end inlet opening 25 and sets on piston 18, makes to set piston 18 and moves up; Setting piston 18, to drive lower connector 17 and jump ring to overlap 19 up, and cut off and set pin 22; Compress three packing elements 12,14,16, packing element diameter under responsive to axial force becomes large and is tightly attached on the internal diameter of tubing and casing simultaneously, so just seal tubing and casing annular space (namely G.I.H fastening means 2
7/
85 of oil-pipe external wall and well itself
1/
2annular space between internal surface of sleeve pipe).After laying down tubing pressure, the draw-in groove 32 that jump ring overlaps 19 lower end inside is locked on clip spring seat 20 by jump ring 21, and packer is in sealing state all the time.
While set packer suppressed by described oil pipe; the inlet opening 26 of hydraulic pressure through central tube 5 upper end acts on boosting piston 3; boosting piston 3 tightly blocks central tube 5 under the effect of front end sawtooth tooth; overcome the power acted on when setting on deblocking pin 4; protection deblocking pin 4 is not cut off when high pressure sets state, the phenomenon that deblocking pin 4 may be interrupted when avoiding packer setting.The wall of the central tube 5 at corresponding spring 6 place is provided with radial direction through hole 27, radial direction through hole 27 is that flushing fluid acts on well-flushing piston 7 through the eyelet of upper joint sleeve 2 when well-flushing, now the eyelet place of upper joint sleeve 2 is the pressure in the annular space of described tubing and casing, pressure acts on the lower end of well-flushing piston 7 herein, and due to well-flushing piston 7 upper end that exists of radial direction through hole 27 be pressure in oil pipe, during well-flushing, tubing and casing pressure is greater than oily overpressure, so well-flushing piston 7 can be made up, if there is no hole 27, well-flushing piston 7 upper end then can be caused to be in a closed air chamber state, when guild on well-flushing piston 7 causes in the compressed-air actuated result of confined space, so have radial direction through hole 27 oily overpressure is imported to well-flushing piston 7 upper end, it is made to produce pressure differential when well-flushing.
The utility model is when well-flushing, flushing fluid acts on well-flushing piston 7 through the well washing hole 31 of upper joint sleeve 2, promote the up and Compress Spring 6 of well-flushing piston 7, well-flushing passage 30 is opened, and the weep hole 28 of flushing fluid by lower joint sleeve 17 after the annular space between central tube 5 and exterior central tube 11 flows through packer.After well-flushing completes, well-flushing piston 7 resets and seal well washing passage under the effect of spring 6 elastic force.
During the utility model deblocking, upper lifting pipe post, at packing element and sleeve pipe (5 of the well itself of packer at different levels
1/
2sleeve pipe) between under frictional force effect, first upper lifting force acts on the deblocking pin 4 of first order packer, on carry load be greater than tubing string deadweight time, deblocking pin 4 starts stressed, when acting on the power on deblocking pin 4 and being increased to certain load, deblocking pin 4 is cut off, the distance of the compression of top connection 1, upper joint sleeve 2, base 10 and the up packing element of exterior central tube 11, the packing element 12,14,16 of central tube 5, lower contact 23 packer at different levels below first order packer and sleeve pipe (5 of well itself
1/
2sleeve pipe) between motionless under frictional force effect, the packing element (12,14,16) of first order packer loses pressured state, under its own resilient effect, diameter diminishes, first order removing seal for packer, continue upper lifting pipe post second level packer and repeat above-mentioned action deblocking, until the whole of completed well lower tubular column trip out.When applying, every mouthful of well can be placed with several packers according to geology needs at the position of stratum of specifying.
Claims (1)
1. a novel stepped-depacking packer, it is characterized in that: comprise top connection, upper joint sleeve, boosting piston, deblocking pin, central tube, spring, well-flushing piston, pressure cap, joint ring, base, exterior central tube, upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder, lower joint sleeve, set piston, jump ring cover, clip spring seat, jump ring, set pin and lower contact, the wall of top connection is uniformly distributed along the circumference four hollow holes, at each hollow hole built with a boosting piston, top connection is enclosed within outside the upper end of central tube, and deblocking pin is installed between top connection and central tube, spring housing is contained in outside central tube, makes the upper end of spring withstand on the lower end of top connection, well-flushing piston bush is outside central tube, the upper end of well-flushing piston and the lower end in contact of spring, upper joint sleeve is enclosed within the outside of boosting piston, deblocking pin, central tube, spring and well-flushing piston, and the upper end of upper joint sleeve is contacted with the leave from office terrace of the outward flange on top connection top, the internal thread of pressure cap bottom is connected with the external screw thread on base top, and the joint ring that the upper inner of pressure cap will be positioned at base top compresses, and becomes to coordinate squeezed state with joint ring, and pressure cap is inserted in central tube and extrusion spring makes it to become compressive state, in the bottom of upper joint sleeve, the position corresponded between pressure cap and well-flushing piston is circumferentially provided with radial well washing hole, the outside of base and the lower end inside of upper joint sleeve are threaded connection, exterior central tube is enclosed within outside central tube, the upper end of exterior central tube and the interior side contacts of base bottom, and upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder are enclosed within outside exterior central tube from top to bottom successively, the upper end of lower joint sleeve is enclosed within outside exterior central tube, and with the lower end in contact of lower rubber cylinder, exterior central tube and between lower joint sleeve and central tube gap as well-flushing passage, set piston bush outside central tube, and be threaded with the lower end of lower joint sleeve, inlet opening is provided with corresponding to setting piston place at central tube, jump ring is contained in the cannelure outside clip spring seat, and clip spring seat is enclosed within outside central tube, and is sitting on the step surface outside central tube, and the upper end of this clip spring seat is relative with the lower end setting piston, the top of jump ring cover is enclosed within the outside setting piston and clip spring seat, and is threaded connection with the outside setting piston, the draw-in groove of the inverted trapezoidal that a few row coordinates with jump ring is provided with in the inner side of jump ring cover lower end, the upper inner of lower contact is threaded with the lower end outside of central tube, and the lower end that jump ring is overlapped is sleeved on the undergauge step place of lower contact upper end, install in the lower end of jump ring cover and the upper end socket place of lower contact and set pin, be provided with sawtooth tooth in the inner side of piston, the wall of the central tube at corresponding spring place is provided with radial direction through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559801.7U CN204175230U (en) | 2014-09-28 | 2014-09-28 | Constant pressure stepped-depacking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559801.7U CN204175230U (en) | 2014-09-28 | 2014-09-28 | Constant pressure stepped-depacking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175230U true CN204175230U (en) | 2015-02-25 |
Family
ID=52564047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420559801.7U Withdrawn - After Issue CN204175230U (en) | 2014-09-28 | 2014-09-28 | Constant pressure stepped-depacking packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175230U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265234A (en) * | 2014-09-28 | 2015-01-07 | 康庆刚 | Constant-pressure classified deblocking packer |
| CN113250645A (en) * | 2021-06-22 | 2021-08-13 | 新疆华隆油田科技股份有限公司 | Piston-driven type expansion packer |
| CN113567068A (en) * | 2021-07-24 | 2021-10-29 | 西南石油大学 | Device and method for testing sealing performance parameters of packer of oil and gas well |
| CN115030683A (en) * | 2022-07-29 | 2022-09-09 | 武昌理工学院 | Novel two-stage wedging type long rubber sleeve packer |
-
2014
- 2014-09-28 CN CN201420559801.7U patent/CN204175230U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265234A (en) * | 2014-09-28 | 2015-01-07 | 康庆刚 | Constant-pressure classified deblocking packer |
| CN113250645A (en) * | 2021-06-22 | 2021-08-13 | 新疆华隆油田科技股份有限公司 | Piston-driven type expansion packer |
| CN113567068A (en) * | 2021-07-24 | 2021-10-29 | 西南石油大学 | Device and method for testing sealing performance parameters of packer of oil and gas well |
| CN113567068B (en) * | 2021-07-24 | 2024-05-17 | 西南石油大学 | Device and method for testing sealing performance parameters of oil-gas well packer |
| CN115030683A (en) * | 2022-07-29 | 2022-09-09 | 武昌理工学院 | Novel two-stage wedging type long rubber sleeve packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |