CN201050330Y - Releasing packer for pump recovery well snubbing environment-friendly operation - Google Patents
Releasing packer for pump recovery well snubbing environment-friendly operation Download PDFInfo
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- CN201050330Y CN201050330Y CNU2007201553229U CN200720155322U CN201050330Y CN 201050330 Y CN201050330 Y CN 201050330Y CN U2007201553229 U CNU2007201553229 U CN U2007201553229U CN 200720155322 U CN200720155322 U CN 200720155322U CN 201050330 Y CN201050330 Y CN 201050330Y
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Abstract
A releasing packer with environmentally friendly non-killing operation of mechanical recovery wells is primarily to resolve the problems of the easy damage to the casing by the slip insert of the prior releasing packer, the uneasy unfreezing and the fishing difficulties, which is characterized in that the lower central tube (3) linked between an lower joint (1) and a connector (2) is provided with a packer rubber (4) and an upper piston (5). The upper end of the lower central tube (3) is linked with a central tube (14) through a connecting sleeve (13). An upper central tube (16) of a bulge hole (26) on the upper end belt is connected between the connecting sleeve and an upper joint (15). The connecting body (2) outside the central tube (14) is linked with a locking ball seat (18) through a shearing pin (17). The inside of the locking ball hole of the locking ball seat (18) has the upper and lower locking balls (20, 21) in which the lower central tube (14) is externally provided with an upper cone sleeve (22). The releasing packer with environmentally friendly non-killing operation of mechanical recovery wells has the characteristics of the casing which is uneasy to damage and with easy unfreezing and fishing as well.
Description
Technical field:
The utility model relates to the used packer in oil recovery field, oil field, especially not kill-job of machine-pumped oil well environmental protection operation back-off packer.
Background technology:
The oil field machinery oil well need often carry out maintainability and remove the flow string operation in oil recovery process.When removing the flow string operation, because strata pressure is big, the crude oil in the well can spray from pit shaft, brings difficulty for workman's construction operation, greatly influences job execution progress, quality and safety.Cause environment pollution simultaneously.In order to prevent that crude oil from spraying from pit shaft, generally all adopt mud to carry out kill job.Mud lubrication not only can cause the mud contamination oil reservoir, influences crude oil production.Also can cause environment pollution after the mud tubing flow displacement.Therefore not kill-job of Oilfield using environmental protection operation technique, machine-pumped oil well adopts in the not kill-job environmental protection operation technique at present, and it is the down-hole switch of giving up that a kind of technology is arranged, and is lowered to the tubing string of giving up exactly in the down-hole, and this tubing string of giving up is made up of 253 back-off packers and valve.When playing lower tubular column, valve is closed, and prevents the crude oil ejection.After lower tubular column was finished, the pike pole below tubing string was disclosed out valve, gets final product ordinary production.General electric pump well mostly adopts this technology.But this 253 back-off packers all exist slip insert easy damaged sleeve pipe and the problem that is difficult for the unfreezing fishing difficulty.
The utility model content:
In order to solve existing back-off packer slip insert easy damaged sleeve pipe and the problem that is difficult for the unfreezing fishing difficulty, the utility model provides a kind of not kill-job of machine-pumped oil well environmental protection operation back-off packer, and this not kill-job of machine-pumped oil well environmental protection operation back-off packer has not easy damaged sleeve pipe and the easily characteristics of unfreezing salvaging.
The technical solution of the utility model is: this not kill-job of machine-pumped oil well environmental protection operation back-off packer comprises lower contact, the lower center tube top that is connected between lower contact and connector is equipped with packing element and upper piston successively, be fixed with clip spring seat by following pin on the lower center tube of upper piston lower end, clip spring seat is externally connected with jump ring, be equipped with lower piston on the lower center tube of clip spring seat lower end, on the lower center tube of lower piston lower end pressurizing port is arranged, upper piston and lower piston are connected with the jump ring cover, the jump ring cover is outer to be connected with the connection sealing shroud by pin, the lower center tube upper end is connected with central tube by adapter sleeve, be connected with the upper end between adapter sleeve and top connection with the upper center tube of going up pressurizing port, be connected with the lock ball seat by cutting off pin on the outer connector of central tube, be connected with the cover of giving up between lock ball seat upper end and top connection, the lock ball hole of lock ball seat is built-in with, following lock ball, central tube under the last lock ball is equipped with up big and down small last tapered sleeve outward, last tapered sleeve by on cut off pin and be connected to give up and put, the epicone set upper side is connected with stop collar, and the central tube under the following lock ball is externally connected with up-small and down-big following tapered sleeve.
The utlity model has following beneficial effect: this not kill-job of machine-pumped oil well environmental protection operation back-off packer is owing to take such scheme, by upper and lower lock ball grappling, by the light unfreezing fishing of special tool.This not kill-job of machine-pumped oil well environmental protection operation back-off packer has not easy damaged sleeve pipe and the easily characteristics of unfreezing salvaging thus.
Description of drawings:
Accompanying drawing 1 is a structural representation on the lock ball 20 on the utility model;
Accompanying drawing 2 is 21 times structural representations of lock ball under the utility model.
1-lower contact among the figure, 2-connector, 3-lower center tube, 4-packing element, 5-upper piston, pin under the 6-, 7-clip spring seat, 8-lower piston, 9-pressurizing port, 10-jump ring cover, the 11-pin, 12-connects sealing shroud, 13-adapter sleeve, 14-central tube, the 15-top connection, the 16-upper center tube, 17-cuts off pin, 18-lock ball seat, the 19-cover of giving up, the last lock ball of 20-, lock ball under the 21-, the last tapered sleeve of 22-, cut off pin on the 23-, 24-stop collar, tapered sleeve under the 25-, the last pressurizing port of 26-.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, this not kill-job of machine-pumped oil well environmental protection operation back-off packer comprises lower contact 1,2 lower center tube that is connected 3 tops of lower contact 1 and connector are equipped with packing element 4 and upper piston 5 successively, be fixed with clip spring seat 7 by following pin 6 on the upper piston 5 lower end lower center tubes 3, clip spring seat 7 is externally connected with jump ring, be equipped with lower piston 8 on the clip spring seat 7 lower end lower center tubes 3, on the lower piston 8 lower end lower center tubes 3 pressurizing port 9 is arranged, upper piston 5 is connected with jump ring cover 10 with lower piston 8, jump ring cover 10 outer being connected with by pin 11 connect sealing shroud 12, lower center tube 3 upper ends are connected with central tube 14 by adapter sleeve 13,15 of adapter sleeve 13 and top connections are connected with the upper end with the upper center tube 16 of going up pressurizing port 26, be connected with lock ball seat 18 by cutting off pin 17 on the central tube 14 outer connectors 2,3 of lock ball seat 18 upper ends and top connections are connected with the cover 19 of giving up, the lock ball hole of lock ball seat 18 is built-in with lock ball 20 and reaches lock ball 21 down, be equipped with up big and down small last tapered sleeve 22 outside the central tube 14 under the last lock ball 20, last tapered sleeve 22 by on cut off pin 23 be connected give up the cover 19 on, last tapered sleeve 22 upper ends are connected with stop collar 24, and the central tube 14 under the following lock ball 21 is externally connected with up-small and down-big following tapered sleeve 25.
During actual the use, after being lowered to this not kill-job of machine-pumped oil well environmental protection operation back-off packer operation, suppress from oil pipe at well head, when suppressing 10MPa, lock ball seat 18 is cut off pin 17 pins under the effect of pressure, move downward, lock ball 21 was stuck on the inwall of sleeve pipe by last tapered sleeve 22 and tapered sleeve 25 releases down under last lock ball 20 reached.When pressure reaches 15MPa, cut off pin 23 on the last tapered sleeve 22 and cut off and move downward, blocked by jump ring, tapered sleeve 22 can not be withdrawed from.In the jump ring action, lower piston 8 also under the effect of pressure, is cut off pin 11 and is being with jump ring cover 10 to move upward, compression packing element 4, packing element 4 is in the effect lower seal oil removal collar-shaped space of pressure, and jump ring cover 10 is stuck on the jump ring simultaneously, and packing element 4 can not reclaimed when having pressure.When set the card finish after.To suppress 18MPa from oil pipe once more after the pressure release, not kill-job switch is cut off pin 6 down under the effect of pressure, and at this moment pressure descends to some extent.Show that switch cuts out.On well head, carry oil pipe and be about the tubing string load, just changeing oil pipe at well head and giving up.Give up finish after upper lifting pipe post tubing flow displacement kill mud, mud for after clean, is tripped out the tubing string of giving up.Be lowered to oil recovery lifting tubing string by the schematic design requirement, suppress 15MPa from oil sets annular space again after flow string is finished, with not kill-job switch opens, the production of can recovering the oil normally.
When this not kill-job of machine-pumped oil well environmental protection operation back-off packer bottom pressure was big, last tapered sleeve 22 and last lock ball 20 can effectively prevent to scurry on the tubing string.When this not kill-job of machine-pumped oil well environmental protection operation back-off packer upper pressure was big, lock ball 21 can prevent effectively that tubing string from moving down under following tapered sleeve 25 reached.
When tripping out when giving up tubing string, available dipper carries out outer dragging for, and drags in the also available Mao Jinhang of dragging for.Salvage the fishing head of back-off packer when fishing tool after, the unfreezing of upper lifting pipe post, it is up that tapered sleeve 22 is gone up in the fishing head drive, and last lock ball 20 loses the support unfreezing, continues the upper lifting pipe post, and last tapered sleeve 22 drives lock ball seats 18 up lock balls 21 down and loses the support unfreezing.Continue the upper lifting pipe post, at effect lower rubber cylinder 4 deblockings of packing element 4 with the frictional force of sleeve pipe.
Claims (1)
1. not kill-job of machine-pumped oil well environmental protection operation back-off packer, comprise lower contact (1), it is characterized in that: lower center tube (3) top that is connected between lower contact (1) and connector (2) is equipped with packing element (4) and upper piston (5) successively, upper piston (5) lower end lower center tube (3) is last to be fixed with clip spring seat (7) by following pin (6), clip spring seat (7) is externally connected with jump ring, be equipped with lower piston (8) on clip spring seat (7) the lower end lower center tube (3), pressurizing port (9) is arranged on lower piston (8) the lower end lower center tube (3), upper piston (5) is connected with jump ring cover (10) with lower piston (8), outer being connected with by pin (11) of jump ring cover (10) connects sealing shroud (12), lower center tube (3) upper end is connected with central tube (14) by adapter sleeve (13), be connected with the upper end between adapter sleeve (13) and top connection (15) with the upper center tube (16) of going up pressurizing port (26), the outer connector of central tube (14) (2) is gone up and is connected with lock ball seat (18) by cutting off pin (17), be connected with the cover (19) of giving up between lock ball seat (18) upper end and top connection (3), the lock ball hole of lock ball seat (18) is built-in with, following lock ball (20,21), be equipped with up big and down small last tapered sleeve (22) outside the central tube (14) under the last lock ball (20), last tapered sleeve (22) by on cut off pin (23) and be connected on the cover (19) of giving up, last tapered sleeve (22) upper end is connected with stop collar (24), and the central tube (14) under the following lock ball (21) is externally connected with up-small and down-big following tapered sleeve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201553229U CN201050330Y (en) | 2007-07-16 | 2007-07-16 | Releasing packer for pump recovery well snubbing environment-friendly operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201553229U CN201050330Y (en) | 2007-07-16 | 2007-07-16 | Releasing packer for pump recovery well snubbing environment-friendly operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050330Y true CN201050330Y (en) | 2008-04-23 |
Family
ID=39336814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201553229U Expired - Fee Related CN201050330Y (en) | 2007-07-16 | 2007-07-16 | Releasing packer for pump recovery well snubbing environment-friendly operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050330Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847848A (en) * | 2019-12-12 | 2020-02-28 | 辽宁新华仪器有限公司 | Full latus rectum scale control shutoff tubular column instrument of motor-pumped well |
-
2007
- 2007-07-16 CN CNU2007201553229U patent/CN201050330Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847848A (en) * | 2019-12-12 | 2020-02-28 | 辽宁新华仪器有限公司 | Full latus rectum scale control shutoff tubular column instrument of motor-pumped well |
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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: 20080423 Termination date: 20100716 |