CN2584798Y - Override type tubular anchoring apparatus - Google Patents
Override type tubular anchoring apparatus Download PDFInfo
- Publication number
- CN2584798Y CN2584798Y CN 02237635 CN02237635U CN2584798Y CN 2584798 Y CN2584798 Y CN 2584798Y CN 02237635 CN02237635 CN 02237635 CN 02237635 U CN02237635 U CN 02237635U CN 2584798 Y CN2584798 Y CN 2584798Y
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- CN
- China
- Prior art keywords
- piston
- tube
- central tube
- sleeve
- sheathed
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- Expired - Fee Related
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Abstract
The utility model relates to an override tubular post anchoring apparatus comprising an outer sleeve tube and a central tube, wherein, a piston is sheathed between the outer circle of the central tube and the inner hole of the big end sleeve tube of the outer sleeve tube; the big end of the piston is provided with one to multiple columns of circular holes dividing a circumference in equal parts; steel balls are arranged in ball seats arranged in each column of circular holes. On the outside circle on the upper part of the central tube, the front ends of each column of steel balls are respectively inlaid with taper-sleeve-shaped tapers of which the small ends face the steel balls. A shaft journal on the front end of the piston is sheathed with a locking sleeve of which one end is connected with the piston via a transverse releasing pin, and the other end is sheathed in the outer circles of two clamping rings namely a left and a right circular rings with openings; a spacing ring is held between the two clamping rings, and the inner hole of the spacing ring is sheathed in a fixing sleeve of a clamping spring; the clamping ring and the spacing ring are axially pressed on the fixing sleeve of the clamping spring, which is sheathed on the outer circle of the outer sleeve tube. The utility model keeps the original functions of no damages on the sleeve tube, and convenient clamp and release, and also has the functions of more dispersive anchoring stress, override coupling with double or multiple rows of steel balls and rigid anchoring and locking.
Description
Technical field
The utility model relates to oil field down-hole string anchor, and concrete is a kind of override type tubing string anchor.
Background technology
Down-hole string can produce elongation regularly and shorten under responsive to axial force, this effect causes tubing string fatigue and tool failures, therefore need carry out grappling to tubing string.The anchor that uses at present is slip-type, and its block teeth are snapped at internal surface of sleeve pipe, can produce permanent damages to sleeve pipe, and the use of slip-type anchor is restricted.
We disclose a kind of override type tubing string anchor in Chinese patent 00236658.4, it does not damage sleeve pipe, is convenient to sit the function of card and unfreezing, we are in development thereafter, again it has been done improvement, increased locking mechanism and conciliate mechanism for card, just its performance more becomes perfect.
Summary of the invention
The purpose of this utility model provides a kind of improved override type tubing string anchor, it does not damage sleeve pipe except keeping original, is convenient to sit the function of card and unfreezing, also have grappling stress more disperse, double or arrange steel ball more and surmount box cupling, rigid anchorage lock function.
The purpose of this utility model is achieved in that
A kind of override type tubing string anchor, comprise outer tube and central tube, outer tube and central tube respectively have center hole, threaded connection is in the internal thread of outer tube beyond the central tube, between the endoporus of the big end sleeve pipe of the cylindrical of central tube and outer tube, be set with piston, and sealing ring respectively is housed in the annular groove of piston inner hole, cylindrical, the tube wall of central tube has through hole to be communicated with chamber between piston end surface and the big end cover pipe orifice end face, between this piston and the big end sleeve pipe in case sit-and-sell is followed closely locatees;
The big end of described piston has the circular hole of one to multiple row circumference in equal parts, and the dress ball seat is respectively adorned steel ball in the ball seat in every row circular hole, on the cylindrical of central tube top, is installed with the cone of tapered sleeve shape in the front end of every row steel ball, and the small end of this cone is towards steel ball;
On the preceding end-journal of piston, be set with the locking cover, circle has some overhead kick shape annular grooves in this locking cover, this locking cover one end is connected in piston with horizontal unfreezing pin, end is set in the cylindrical of snap ring in addition, this snap ring is the annulus that opening is arranged, there are left and right two, clamping therebetween has spacer ring, the inner hole sleeve of this spacer ring is loaded on the snap ring fixed cover, this fixed cover one end has bulge loop spacing to snap ring, end has external screw thread and hold-down nut to be spirally connected in addition, and in the jump ring fixed cover, this jump ring fixed cover is set in the cylindrical of outer tube to this nut with snap ring, spacer ring axial compression.
Described cone is truncated cone shape.
Described cone 9 is positive polygonal pyramid platform shape, and its seamed edge number is identical with the number of ball seat 7 and steel ball 8.
The utility model has following actively useful effect:
1. anchor is upwards moved by hydraulic coupling (or elastic force) promotion the axis of the piston, the ball seat body of the steel ball that one to multiple row are housed is shifted onto on the fixing cone conical surface, steel ball is up along the conical surface, outward radial moves simultaneously, up to touching internal surface of sleeve pipe, steel ball is clamped in the wedge shape crack of cone and internal surface of sleeve pipe, makes internal surface of sleeve pipe, steel ball and cone be retained as one, stop tubing string descending, play the effect of tubing string grappling.Biserial or multiple row spheroid are contained on the same outer tube, can outwards not open running into the oil well casing interface yet, can not damage sleeve pipe, long service life during work, it is easy to sit card and unfreezing, also have grappling stress more disperse, double or arrange steel ball more and surmount box cupling, rigid anchorage lock function.
2. this product is provided with and prevents to sit mechanism for card midway, can not discharge to sit card in certain pressure reduction or elastic force scope, to prevent tubing string grappling midway when the operation.
3. this product is provided with locking mechanism, can unfreezing in the latching force scope.
4. this product is provided with unfreezing mechanism, and when axial tensile force exceeds latching force in limited time, the unfreezing pin is cut off and realized unfreezing.
5. the cone external diameter of this product center pipe top insert is up big and down small, and can be processed into circular cone stage body or pyramid stage body according to instructions for use, and the circular cone stage body is mainly used in downward grappling, has little moment of torsion rotation grappling effect concurrently; The rib number of prismoid and the number of steel ball are consistent, not only have downward grappling, and the effect of left rotation and right rotation grappling is arranged.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment, is elevation cross-sectional view;
Fig. 2 is the partial enlarged drawing of Fig. 1.
Accompanying drawing number:
1. outer tube
101. external screw thread 102. internal threads 103. big end sleeve pipes
2. central tube
201. center hole 202. external screw threads 203. external screw threads
204. through hole
3. sealing ring 4. sealing rings
5. piston
501. big end 502. chambers of piston
6. 7. ball seats, 8. steel balls are followed closely in anti-sit-and-sell
9. 11. lockings of cone 10. unfreezing pins are overlapped
12. jump ring fixed cover 13. jump rings 14. spacer rings
15. hold-down nut 16. overhead kick shape annular grooves
The specific embodiment
Please refer to Fig. 1, Fig. 2, the utility model is a kind of override type tubing string anchor, comprise outer tube 1 and central tube 2, outer tube 1 and central tube 2 respectively have center hole 101 and 201, central tube 2 is linked to the internal thread 103 of outer tube 1 with external screw thread 203, between the endoporus of the big end sleeve pipe 104 of the cylindrical of central tube and outer tube 1, be set with piston 5, and in piston inner hole, be equiped with sealing ring 4 and 3 in the annular groove of cylindrical, the tube wall of central tube 2 has through hole 204 to be communicated with the chamber 502 between the hole end surfaces in piston end surfaces and the big end sleeve pipe 104, between this piston 5 and the big end sleeve pipe 104 in case sit-and-sell follows closely 6 locatees;
The big end 501 of described piston 5 has the circular hole of one to multiple row circumference in equal parts, and dress ball seat 7 is respectively adorned steel ball 8 in the ball seat in every row circular hole, on central tube 2 top cylindricals, is installed with the cone 9 of tapered sleeve shape in the front end of every row steel ball, and the small end of this cone 9 is towards steel ball 8;
On the preceding end-journal of piston 5, be set with locking cover 11, circle has some overhead kick shape annular grooves 16 in this locking cover, this locking cover one end is connected in piston 5 with horizontal unfreezing pin 10, end is set in the cylindrical of snap ring 13 in addition, this snap ring 13 is for there being the annulus of opening, a left side is arranged, right two, clamping therebetween has spacer ring 14, the inner hole sleeve of this spacer ring is loaded on snap ring fixed cover 12, this fixed cover one end has bulge loop spacing to snap ring 13, end has external screw thread and hold-down nut 15 to be spirally connected in addition, and this nut is with snap ring 13, spacer ring 14 axial compression are in jump ring fixed cover 12, and this jump ring fixed cover 12 is set in the cylindrical of outer tube 1.
Described cone 9 is truncated cone shape.
Described cone 9 is positive polygonal pyramid platform shape, and its seamed edge number is identical with the number of ball seat 7 and steel ball 8.
Claims (3)
1. override type tubing string anchor, comprise outer tube (1) and central tube (2), outer tube (1) and central tube (2) respectively have center hole (101) and (201), central tube (2) is linked to the internal thread (103) of outer tube (1) with external screw thread (203), between the endoporus of the big end sleeve pipe (104) of the cylindrical of central tube and outer tube (1), be set with piston (5), and in piston inner hole, sealing ring (4) and (3) respectively are housed in the annular groove of cylindrical, the tube wall of central tube (2) has through hole (204) to be communicated with piston end surface and the big chamber of holding between the interior hole end surface of sleeve pipe (104) (502), between this piston (5) and the big end sleeve pipe (104) in case sit-and-sell nail (6) location is characterized in that:
The big end (501) of described piston (5) has the circular hole of one to multiple row circumference in equal parts, dress ball seat (7) in every row circular hole, respectively adorn steel ball (8) in the ball seat, on the cylindrical of central tube (2) top, be installed with the cone (9) of tapered sleeve shape in the front end of every row steel ball, the small end of this cone (9) is towards steel ball (8);
On the preceding end-journal of piston (5), be set with locking cover (11), circle has some overhead kick shape annular grooves (16) in this locking cover, this locking cover one end is connected in piston (5) with horizontal unfreezing pin (10), end is set in the cylindrical of snap ring (13) in addition, this snap ring (13) is for there being the annulus of opening, a left side is arranged, right two, clamping therebetween has spacer ring (14), the inner hole sleeve of this spacer ring is loaded on snap ring fixed cover (12), this fixed cover one end has bulge loop spacing to snap ring (13), end has external screw thread and hold-down nut (15) to be spirally connected in addition, this nut is with snap ring (13), spacer ring (14) axial compression is in jump ring fixed cover (12), and this jump ring fixed cover (12) is set in the cylindrical of outer tube (1).
2. override type tubing string anchor as claimed in claim 1 is characterized in that: described cone (9) is truncated cone shape.
3. override type tubing string anchor as claimed in claim 1 is characterized in that: described cone (9) is positive polygonal pyramid platform shape, and its seamed edge number is identical with the number of ball seat (7) and steel ball (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237635 CN2584798Y (en) | 2002-06-21 | 2002-06-21 | Override type tubular anchoring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237635 CN2584798Y (en) | 2002-06-21 | 2002-06-21 | Override type tubular anchoring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584798Y true CN2584798Y (en) | 2003-11-05 |
Family
ID=33711546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02237635 Expired - Fee Related CN2584798Y (en) | 2002-06-21 | 2002-06-21 | Override type tubular anchoring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584798Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132939A (en) * | 2012-12-21 | 2013-06-05 | 贵州航天凯山石油仪器有限公司 | Anchoring method and device of intelligent casting-pulling instrument |
| CN112127826A (en) * | 2020-10-19 | 2020-12-25 | 西京学院 | Setting and unsealing mechanism for underground sealing short section |
-
2002
- 2002-06-21 CN CN 02237635 patent/CN2584798Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132939A (en) * | 2012-12-21 | 2013-06-05 | 贵州航天凯山石油仪器有限公司 | Anchoring method and device of intelligent casting-pulling instrument |
| CN112127826A (en) * | 2020-10-19 | 2020-12-25 | 西京学院 | Setting and unsealing mechanism for underground sealing short section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Daqing big limited liability company Assignor: Zheng Lianrong Contract record no.: 2010230000007 Denomination of utility model: Overtaking pipe string anchoring device Granted publication date: 20031105 License type: Exclusive License Record date: 20100419 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031105 Termination date: 20100621 |