CN200978649Y - Packer for side drilling well - Google Patents
Packer for side drilling well Download PDFInfo
- Publication number
- CN200978649Y CN200978649Y CN 200620158497 CN200620158497U CN200978649Y CN 200978649 Y CN200978649 Y CN 200978649Y CN 200620158497 CN200620158497 CN 200620158497 CN 200620158497 U CN200620158497 U CN 200620158497U CN 200978649 Y CN200978649 Y CN 200978649Y
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- China
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- packer
- well
- central tube
- oil
- outside
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Abstract
The utility model relates to a sidetracking well packer which is an oil-extraction tool suitable for layered operation of shallow well, straight well, oblique well, and sidetracking well in oil and gas field exploitation projection. The utility model is especially suitable for layered operation of oblique well and sidetracking well. The sidetracking well packer of the utility model comprises a control lock mechanism, a reverse-tooth horse-tooth locking mechanism, a packing oil-jacket annular sealing mechanism, and a shear-pin unsealing mechanism. When the packer reaches a predetermined position down-well, the well mouth is mounted, the oil-pipe suppression-pressure opens the control lock and then continues to pressurize, a piston drives the working cylinder to compress the packing element, thereby the packing element tightly sticks to the inner wall of the sleeve. Meanwhile, the reverse-tooth horse-tooth lock ring and the working cylinder are tightly locked to be an integration, thereby the packing element does not rebound after working, and oil-jacket annular packing purpose is achieved. While unsealing, the pipe column is pulled up, the unsealing shear-pin is clipped, the packing element is retracted by the self-elasticity, thereby unsealing is realized. The tool is novel in structure, small in appearance, low in processing and manufacturing cost, and simple for use and operation.
Description
Technical field
The utility model relates to a kind of sidetracked hole packer, is in Oil-Gas Field Development Engineering, is used to one of downhole tool of card layer, oil production by layer, particularly is suitable for inclined shaft, sidetracked hole stratified operation.
Background technology
Present domestic application side driller plants, and reparation part cover decreases, casing deformation well recovers the oil production.Sidetracked hole is being windowed below the position, and adopt is lowered to Φ 101.6mm sleeve pipe (its internal diameter is Φ 86mm～Φ 88.6mm) more, and existing ripe packer construction is difficult to be lowered to, and can't satisfy sidetracked hole and produce needs.
Summary of the invention
The purpose of this utility model is to provide a kind of packer that satisfies oil field sidetracked hole production and measure operation needs, and this packer is not limited by hole deviation, can be lowered to the sidetracked hole section, and oil-water well is returned to normal production, thereby the assurance oil field is effectively developed.
The utility model adopts following technical scheme, it is the sidetracked hole packer, constitute by top connection, central tube and lower contact successively from top to bottom, it is characterized in that on the tube wall of the outside of the central tube between top connection and the lower contact retaining mechanism, control lock mechanism and sealing mechanism being installed successively from top to bottom, top connection adopts bolt to be connected respectively with lower contact and central tube.
Sidetracked hole packer of the present utility model, the retaining mechanism of installing on its central tube outboard tube wall is made of the seating nipple of supporter, pawl horse tooth form lock ring and band pawl gingival cyst of mucous gland in the newborn button from inside to outside successively.The conical surface is arranged, the convenient pawl horse tooth form lock ring of installing on the supporter.It act as when packer accessory is compressed, and seating nipple is descending, and pawl gingival cyst of mucous gland in the newborn button on the lock ring and the interlock of seating nipple upper inverted tooth gingival cyst of mucous gland in the newborn button do not fall back.
Control head is equipped with in outer ring, top at the supporter of retaining mechanism, and control head is connected with the seating nipple top, and baffle ring is equipped with in the bottom of the supporter of retaining mechanism, and Baltimore groove is arranged on the central tube, puts into baffle ring.The effect of baffle ring is not to be subjected to displacement behind the supported body running.
Sidetracked hole packer of the present utility model, the control lock mechanism of installing on its central tube outboard tube wall, be to be made of the control piston on the lock dog in central tube groove interstitial hole, the interstitial hole, interstitial hole top and the shear pin on the control piston, the be locked seating nipple of mechanism of control lock mechanism outside covers.Fluted hole on the central tube, the indentation limitations lock dog is not subjected to displacement, and recess hole plays the pressure transmission effect.
Threaded shear pin hole is arranged on the control piston, and the piston upper end has shear pin groove and square groove, lock dog to put into the recess hole place of piston square groove and central tube; Control piston is enclosed within on the lock dog, and shear pin is installed on the control piston.Under the effect of lock dog, each parts of packer are firmly locked be any displacement not to take place one.
Sidetracked hole packer of the present utility model, the sealing mechanism of installing on its central tube outboard tube wall from top to bottom are made of piston, top packer accessory, spacer ring, bottom packer accessory, deblocking body and seat envelope pressure cap successively.Adopt the deblocking shear pin to fix between the deblocking body of sealing mechanism and seat envelope pressure cap.Packer accessory is wedge type, and top, bottom packer accessory place respectively about the spacer ring, and the inclined-plane is relative, and the beveled end angle is 20 °.
Operating principle of the present utility model, by design sidetracked hole is connected on the down-hole string precalculated position with packer, install well head, oil pipe builds the pressure and opens control lock, continues pressurization again, and piston drives seating nipple compression packer accessory, packer accessory and internal surface of sleeve pipe are adjacent to, simultaneously pawl gingival cyst of mucous gland in the newborn lock ring and seating nipple are firmly locked and are one, make not resilience after the packer accessory work, reach packing oil jacket annular space purpose.During deblocking, the upper lifting pipe post is cut off the deblocking shear pin, and packer accessory gets final product deblocking by self elastic force withdrawal.This tool construction novelty, external form is small and exquisite, and processing and manufacturing is with low cost, uses simple to operate.
Description of drawings
Fig. 1, sidetracked hole packer construction schematic diagram
Among Fig. 1, top connection 1, central tube 2, control head 3, seating nipple 4, supporter 5, lock ring 6, baffle ring 7, control piston 8, control piston shear pin 9, central tube groove interstitial hole 10, trivial 11, piston 12, top packer accessory 13, spacer ring 14, bottom packer accessory 15, deblocking body 16, deblocking shear pin 17, seat envelope pressure cap 18, bolt 19, lower contact 20.
The specific embodiment
Below in conjunction with accompanying drawing structure of the present utility model and operating principle are further specified, the packer construction schematic diagram of sidetracked hole as shown in Figure 1, packer is lowered to the precalculated position, install well head, oil pipe builds the pressure, liquid stream is through central tube 2, entering groove interstitial hole 10 pressure acts on the control piston 8, when pressure reaches 5MPa～6MPa, the shear pin 9 of control piston is cut off, and control piston 8 is up, and lock dog 11 breaks away from constraint, open control lock, continue to build the pressure to 13MPa～15MPa, piston 12 drives seating nipple 4 again, control head 3 is descending, compression packer accessory 13,15, make packer accessory 13,15 are adjacent to internal surface of sleeve pipe, lock ring 6 with the pawl gingival cyst of mucous gland in the newborn is an one with seating nipple 4 locks simultaneously, makes packer accessory 13, not resilience after 15 work reaches packing oil jacket annular space purpose.
During deblocking, on carry central tube 2, cut off deblocking shear pin 17, packer accessory 13,15 is regained by self elastic force, gets final product deblocking.
Control lock of the present utility model mechanism adopts central tube 2, groove interstitial hole 10, lock dog 11, control piston 8 and shear pin 9 to form, and plays the safeguard protection effect.This mechanism makes each parts of packer be always one before setting, in the process of going into the well, no matter be a well head, or packer rigid body and internal surface of sleeve pipe friction, all can not make each parts that various motions take place and cause a packer mistake seat phenomenon, guarantee that packer is lowered to the precalculated position smoothly.
Retaining mechanism of the present utility model adopts pawl horse tooth form lock ring 6, band pawl gingival cyst of mucous gland in the newborn button seating nipple 4 and supporter 5 to form packer accessory 13, the 15 not resiliences of locking back.Retaining mechanism is safe and reliable, novelty simple in structure.
Sealing mechanism of the present utility model, the spacer ring 14 that 13,15 and two ends of packer accessory that to adopt two one ends be 20 ° of inclined-planes are 20 ° of inclined-planes is formed, and sets in the rear split ring wedging packer accessory 13,15, form bowl-shape, packing oil jacket annular space, the packer sealing performance is good, the pressure-bearing height.
Claims (7)
1, a kind of sidetracked hole packer, constitute by top connection (1), central tube (2) and lower contact (20) successively from top to bottom, it is characterized in that on the tube wall of the outside of the central tube (2) between top connection (1) and the lower contact (20) retaining mechanism, control lock mechanism and sealing mechanism being installed successively from top to bottom, top connection adopts bolt (19) to fixedly connected respectively with lower contact and central tube.
2, sidetracked hole packer as claimed in claim 1 is characterized in that the retaining mechanism installed on the tube wall of the described central tube outside, from inside to outside successively by seating nipple (4) formation of supporter (5), pawl horse tooth form lock ring (6) and band pawl gingival cyst of mucous gland in the newborn button.
3, sidetracked hole packer as claimed in claim 1, it is characterized in that the control lock mechanism of installing on the tube wall of the described central tube outside, be that control piston (8) and shear pin (9) by the outer lock dog (11) of central tube groove interstitial hole (10), interstitial hole, interstitial hole top constitutes, the be locked seating nipple (4) of mechanism of control lock mechanism outside covers.
4, sidetracked hole packer as claimed in claim 1 is characterized in that the sealing mechanism of installing on the tube wall of the described central tube outside is made of piston (12), top packer accessory (13), spacer ring (14), bottom packer accessory (15), deblocking body (16) and seat envelope pressure cap (18) successively from top to bottom.
5, sidetracked hole packer as claimed in claim 1 is characterized in that adopting deblocking shear pin (17) fixing between the deblocking body (16) of described sealing mechanism and seat envelope pressure cap (18).
6, sidetracked hole packer as claimed in claim 1 is characterized in that in the outer ring, top of the supporter of retaining mechanism control head (3) being housed, and baffle ring (7) is equipped with in the bottom of the supporter of retaining mechanism (5).
7, sidetracked hole packer as claimed in claim 4, it is characterized in that described packer accessory (13,15) is wedge type, top, bottom packer accessory place respectively about the spacer ring, and the inclined-plane is relative, the beveled end angle is 20 °, and the two ends of spacer ring (14) also are the inclined-plane at 20 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158497 CN200978649Y (en) | 2006-11-17 | 2006-11-17 | Packer for side drilling well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158497 CN200978649Y (en) | 2006-11-17 | 2006-11-17 | Packer for side drilling well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978649Y true CN200978649Y (en) | 2007-11-21 |
Family
ID=38979026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620158497 Expired - Lifetime CN200978649Y (en) | 2006-11-17 | 2006-11-17 | Packer for side drilling well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200978649Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060684A (en) * | 2017-06-22 | 2017-08-18 | 中国石油集团渤海钻探工程有限公司 | Compress assist type and meet oil chance water self-expanding big orifice open hole packer |
-
2006
- 2006-11-17 CN CN 200620158497 patent/CN200978649Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060684A (en) * | 2017-06-22 | 2017-08-18 | 中国石油集团渤海钻探工程有限公司 | Compress assist type and meet oil chance water self-expanding big orifice open hole packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071121 |
|
| EXPY | Termination of patent right or utility model |