CN202017473U - Progressively unsealed environment-friendly well flushing packer - Google Patents
Progressively unsealed environment-friendly well flushing packer Download PDFInfo
- Publication number
- CN202017473U CN202017473U CN2011201422553U CN201120142255U CN202017473U CN 202017473 U CN202017473 U CN 202017473U CN 2011201422553 U CN2011201422553 U CN 2011201422553U CN 201120142255 U CN201120142255 U CN 201120142255U CN 202017473 U CN202017473 U CN 202017473U
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- Prior art keywords
- center tube
- central pipe
- joint
- bearing cover
- pipe
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- Expired - Fee Related
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Abstract
The utility model discloses a progressively unsealed environment-friendly well flushing packer, belonging to a packer for oilfields. The well flushing packer consists of an upper joint, an upper central pipe, an upper bearing sleeve, a lower joint, a lower central pipe, a lower bearing sleeve and rubber cylinders. The upper joint is in screwed connection with the upper central pipe, the lower end of the upper central pipe is propped against the upper port of the lower joint, the lower joint is in screwed connection with the lower central pipe, the lower central pipe is in clearance fit and annular seal fit with the mutually sleeved upper end of the upper central pipe, and the lower end of the lower central pipe is mutually fixedly connected with the upper central pipe by an unsealing fixture block. The lower bearing sleeve is sleeved on an outer ring of the upper port of the lower joint and sealed with the lower joint by a sealing ring, and the upper port of the lower bearing sleeve is locked with the lower shoulder table of the lower joint by a back cap. A seat seal piston is embedded into an annular space between the lower bearing sleeve and the lower central pipe, a seat seal thrust bush is propped on the seat seal piston, a clamp spring is arranged between the seat seal thrust bush and the lower central pipe, the upper end of the seat seal thrust bush is sequentially connected with a release head and the rubber cylinders of three stages respectively, and a spacing ring is arranged between the rubber cylinders. By improving the design, the well flushing packer can be progressively unsealed from top to bottom when a pipe column is uplifted in an operating machine, so that the friction force is reduced, the uplifting force of the operating machine is further reduced, and a subdivided water injection process and a subdivided oil recovery process are realized.
Description
Technical field
The utility model belongs to the oil field packer, particularly relates to a kind of gradually deblocking environment-friendly type washing well packer.
Background technology
Conventional packer assembling back top connection, central tube, lower contact are by being threaded into an integral body, during use and oil pipe fuse, when process pipe string need need spur whole process pipe string upwards by working rig when the down-hole trips out, packer ability deblocking, just tubing string can't be tripped out from the down-hole if the packer amount of being lowered to surpasses the Pyatyi working rig, be difficult to realize segmentation oil recovery and subdivision injection implementation of processes.
Summary of the invention
The utility model is intended to overcome the deficiencies in the prior art, and a kind of gradually deblocking environment-friendly type washing well packer is provided.
Gradually deblocking environment-friendly type washing well packer of the present utility model is by top connection, upper center tube, go up pressure-bearing cover, lower contact, lower center tube, following pressure-bearing is overlapped and packing element constitutes.The interior spiral shell button of top connection links with the spiral shell mutually suitable for reading of upper center tube and connects, the lower end of upper center tube is butted on the suitable for reading of lower contact, the internal thread of lower contact and lower center tube spiral shell mutually link and connect, and lower center tube and the upper end of the mutual intussusception of upper center tube are matched in clearance and have that ring packing cooperates, its lower end is mutually permanently connected it by the deblocking fixture block.Following pressure-bearing cover intussusception in the outer shroud suitable for reading of lower contact, each other by the joint ring sealing, will descend the following shoulder locking of the suitable for reading and lower contact of pressure-bearing cover by back of the body cap.Embed at the annular space of following pressure-bearing cover and lower center tube and to set piston, support on it and set thrust sleeve, be provided with jump ring between thrust sleeve and the lower center tube setting, the upper end that sets thrust sleeve connects successively and discharges head, three grades of packing elements, is provided with spacer ring between each packing element.Between release head and upper center tube, be provided with the pipe that lower end and upper center tube fix, between release head and pipe, be provided with dummy piston, the pipe upper end connects the pipe joint, the lower edge of pipe joint and the upper edge of packing element offset, its upper edge overlaps mutually with the end opening of the last pressure-bearing cover that is connected in the top connection outer shroud, is provided with the well-flushing piston in the annular space of last pressure-bearing cover and upper center tube.
Gradually deblocking environment-friendly type washing well packer of the present utility model, by improving design, can be when working rig upper lifting pipe post gradually deblocking from top to bottom, thereby reduce friction, and then reduced the upper lifting force of working rig, realized subdivision injection and segmentation oil production technology.This packer has designed unique sealing mechanism of separating, and by last lower center tube, separates sealing mechanism, core components such as fixture block; Design simultaneously has the lower center tube counter balance pocket and presses counter balance pocket up and down, can fully balance in the process that sets with water filling active force to lower center tube, and solved because the packing element unbalance stress that interlayer pressure difference causes, the problem of deblocking in the use has guaranteed stability and sealing in the packer use.Its another characteristics are packers in case on carry deblocking, the liquid in the tubing string can be in the overbalance leakage opening flows into sleeve pipe and can not be brought to ground, has protected the well site environment.
Description of drawings
Fig. 1 is the structural representation of the utility model gradually deblocking environment-friendly type washing well packer.
The specific embodiment
Gradually deblocking environment-friendly type washing well packer of the present utility model is to be made of top connection 1, upper center tube 2, last pressure-bearing cover 3, lower contact 4, lower center tube 5, following pressure-bearing cover 6 and packing element 7.The interior spiral shell button of top connection 1 links with the spiral shell mutually suitable for reading of upper center tube 2 and connects, the lower end of upper center tube 2 is butted on the suitable for reading of lower contact 4, the internal thread of lower contact 4 and lower center tube 5 spiral shell mutually link and connect, lower center tube 5 and upper center tube 2 mutual spline intussusceptions, the upper end is for matched in clearance and have that ring packing cooperates, its lower end is mutually permanently connected it by deblocking fixture block 8, and following pressure-bearing is overlapped 6 intussusceptions in the outer shroud suitable for reading of lower contact 4, each other by the joint ring sealing, will descend the following shoulder of suitable for reading and the lower contact 4 of pressure-bearing cover 6 to lock by back of the body cap 9; Embed at the annular space of following pressure-bearing cover 6 and lower center tube 5 and to set piston 10, support on it and set thrust sleeve 11, be provided with jump ring 12 setting between thrust sleeve 11 and the lower center tube 5, the upper end that sets thrust sleeve 11 connects release 13, three grades of packing elements 7 successively, is provided with spacer ring 14 between each packing element 7; Discharge 13 and upper center tube 2 between be provided with the pipe 15 that lower end and upper center tube 2 fix, discharge 13 and pipe 15 between be provided with dummy piston 16, pipe 15 upper ends connect pipe joint 17, the upper edge of the lower edge of pipe joint 17 and packing element 7 offsets, its upper edge overlaps mutually with the end opening of the last pressure-bearing cover 3 that is connected in top connection 1 outer shroud, is provided with well-flushing piston 18 in the annular space of last pressure-bearing cover 3 and upper center tube 2.
Claims (1)
1. gradually deblocking environment-friendly type washing well packer, be by top connection (1), upper center tube (2), last pressure-bearing cover (3), lower contact (4), lower center tube (5), following pressure-bearing cover (6) and packing element (7) constitute, the interior spiral shell button that it is characterized in that top connection (1) links with the spiral shell mutually suitable for reading of upper center tube (2) and connects, the lower end of upper center tube (2) is butted on the suitable for reading of lower contact (4), the internal thread of lower contact (4) and lower center tube (5) spiral shell mutually link and connect, lower center tube (5) is matched in clearance and has ring packing to cooperate in the upper end of intussusception mutually with upper center tube (2), its lower end is mutually permanently connected it by deblocking fixture block (8), and following pressure-bearing cover (6) intussusception is in the outer shroud suitable for reading of lower contact (4), seal by joint ring each other, to descend the following shoulder locking of the suitable for reading and lower contact (4) of pressure-bearing cover (6) by back of the body cap (9); Embed at the annular space of following pressure-bearing cover (6) and lower center tube (5) and to set piston (10), it is gone up to setting thrust sleeve (11), be provided with jump ring (12) setting between thrust sleeve (11) and the lower center tube (5), the upper end that sets thrust sleeve (11) connects release head (13), three grades of packing elements (7) successively, is provided with spacer ring (14) between each packing element (7); Between release head (13) and upper center tube (2), be provided with the pipe (15) that lower end and upper center tube (2) fix, between release head (13) and pipe (15), be provided with dummy piston (16), pipe (15) upper end connects pipe joint (17), the upper edge of the lower edge of pipe joint (17) and packing element (7) offsets, its upper edge overlaps mutually with the end opening of the last pressure-bearing cover (3) that is connected in top connection (1) outer shroud, is provided with well-flushing piston (18) in the annular space of last pressure-bearing cover (3) and upper center tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201422553U CN202017473U (en) | 2011-05-07 | 2011-05-07 | Progressively unsealed environment-friendly well flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201422553U CN202017473U (en) | 2011-05-07 | 2011-05-07 | Progressively unsealed environment-friendly well flushing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017473U true CN202017473U (en) | 2011-10-26 |
Family
ID=44811144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201422553U Expired - Fee Related CN202017473U (en) | 2011-05-07 | 2011-05-07 | Progressively unsealed environment-friendly well flushing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202017473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121581A (en) * | 2016-07-31 | 2016-11-16 | 辽宁新华仪器有限公司 | Pony packer |
-
2011
- 2011-05-07 CN CN2011201422553U patent/CN202017473U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121581A (en) * | 2016-07-31 | 2016-11-16 | 辽宁新华仪器有限公司 | Pony packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20120507 |