CN2869287Y - Self-locking oil pipe discharge anchor - Google Patents
Self-locking oil pipe discharge anchor Download PDFInfo
- Publication number
- CN2869287Y CN2869287Y CN 200620004717 CN200620004717U CN2869287Y CN 2869287 Y CN2869287 Y CN 2869287Y CN 200620004717 CN200620004717 CN 200620004717 CN 200620004717 U CN200620004717 U CN 200620004717U CN 2869287 Y CN2869287 Y CN 2869287Y
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- CN
- China
- Prior art keywords
- piston
- central tube
- anchor
- cone
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a self-locked oil draining pipe anchor to solve the current problems of damageable bushing caused by anchor, small anchorage force and impossibility of oil draining. The utility model is characterized in that a shorting contact (1) is connected with a cone (4) through an external left-hand thread; through holes (5, 6) are provided on the shorting contact (1) and the cone (4) separately; a piston (7), a spacer sleeve (8) and a cap (9) are covered on the central tube (3), wherein the spacer sleeve (8) is fixed on the central tube (3), the piston (7) is connected with the cap (9) and the spacer sleeve (8) divides the chamber enclosed by the piston (7), the cap (9) and the central tube (3) into up and down chambers (10, 11); the up the chamber (10) is connected with the central tube (3) and the down chamber is not sealed with a spring (12) fixed inside; a anchor bushing (2) is limited connected with the cone (4) and the piston (7) with orbital manner. The utility model has the advantages of easy disanchoring, reliable anchoring, a plurality of times of anchoring, easy operation and reliable oil draining.
Description
Technical field:
The utility model relates to a kind of downhole tool used in the oil recovery field, oil field, especially self-locking oil pipe draining anchor.
Background technology:
In the oil recovery process of oil field, tubing anchor is a kind of downhole tool commonly used, utilizes it can prevent oil pipe and is connected relevant apparatus play up and down on the oil pipe.The tubing anchor that uses is an anchor watt unidirectional spreading formula at present, and is bigger to casing damage owing to casing wall discontinuity when grappling, and what structurally adopt is the radial plunger structure, and anchorage force is little.In addition, existing tubing anchor can not be realized oil draining function when operation.
The utility model content:
For overcome existing tubing anchor easy damaged sleeve pipe, anchorage force is little and deficiency that can not draining, the utility model provides a kind of self-locking oil pipe draining anchor, this self-locking oil pipe draining anchor does not damage sleeve pipe, can draining when operation, have disanchor easily, grappling is reliable, repeatedly grappling, easy to use and draining reliable characteristics.
The technical solution of the utility model is: this self-locking oil pipe draining anchor comprises short circuit, anchor watt and central tube, the outer left hand thread of short circuit connects cone, have through hole on short circuit and the cone, through hole behind the rotation short circuit on short circuit and the cone can be corresponding, central tube is with piston outward respectively, spacer and pressure cap, the piston upper end is conical, spacer is fixed on the central tube, piston links to each other with pressure cap, spacer between piston and pressure cap with piston, the cavity that pressure cap and central tube surround is divided into chamber up and down, upper chamber communicates with central tube, and lower chambers is the non-tight chamber, and anchor watt is with cone and piston that rail mounted is spacing to be connected.
Above-mentioned track cross section is " dovetail " type or T-shape; Spring housing is at the central tube outer wall.
The utlity model has following beneficial effect: owing to take such scheme, after oil well pump work a period of time, produce pressure reduction in the central tube and between the casing annulus, oil enters upper chamber and promotes piston and moves upward, make anchor watt up and sleeve pipe grappling, grappling is reliable, anchor watt parallel outer rising, casing wall is stressed evenly, does not damage sleeve pipe; Because do not have grappling to conciliate the anchor nail, repeatedly grappling need not trip out tubing string.When the dextrorotation short circuit, the through hole correspondence on short circuit and the cone realizes draining, and in the central tube and pressure balance between the casing annulus, piston moves downward under spring action, receives in the piston pulling anchor watt, removes grappling, disanchors easily, and is easy to use.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-short circuit among the figure, 2-anchor watt, 3-central tube, 4-cone, 5,6-through hole, 6-spacer ring, 7-piston, 8-spacer, 9-pressure cap, 10-upper chamber, 11-lower chambers, 12-spring.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this self-locking oil pipe draining anchor comprises short circuit 1, anchor watts 2 and central tube 3, short circuit 1 outer left hand thread connects cone 4, have through hole (5 on short circuit 1 and the cone 4,6), rotation short circuit 1 back through hole (5,6) can be corresponding, the central tube 3 outer pistons 7 that are with respectively, spacer 8 and pressure cap 9, piston 7 upper ends are conical, spacer 8 is fixed on the central tube 3, and piston 7 links to each other with pressure cap 9, spacer 8 between piston 7 and pressure cap 9 with piston 7, the cavity that pressure cap 9 and central tube 3 surround is divided into chamber (10 up and down, 11), upper chamber 10 communicates with central tube 3, and lower chambers 11 is non-tight chamber and built-in spring 12, and spring 12 is enclosed within central tube 3 outer walls; Anchor watts 2 is with cone 4 and piston 7 that rail mounted is spacing to be connected, and the track cross section is " dovetail " type or T-shape.
During actual the use, after oil well pump work a period of time, produce pressure reduction in the central tube 3 and between the casing annulus, oil enters upper chamber 10 and promotes piston 7 and moves upward, make anchor watt 2 up and sleeve pipe grapplings, in this process, need not to suppress, grappling voluntarily behind the turn on pump, less pressure reduction just can be realized grappling, grappling is reliable, anchor watt 2 parallel outer rising, casing wall is stressed evenly, does not damage sleeve pipe; When dextrorotation short circuit 1, through hole (5, the 6) correspondence on short circuit 1 and the cone 4 realizes draining, in the central tube 3 and pressure balance between the casing annulus, piston 7 moves downward under spring 12 effects, receives in the piston 7 pulling anchors watts 2, remove grappling, disanchor easily, easy to use.Because the utility model does not have grappling to conciliate the anchor nail, can realize repeatedly grappling in lower tubular column, repeatedly disanchor, and tubing string need not be tripped out, in addition, compare with existing bleeder, can on heavy oil wells, inclined shaft, sanding in well, realize reliable draining, overcome all drawbacks of multiple bleeder in the past.
Claims (3)
1, a kind of self-locking oil pipe draining anchor, comprise short circuit (1), anchor watt (2) and central tube (3), it is characterized in that: the outer left hand thread of short circuit (1) connects cone (4), have through hole (5 on short circuit (1) and the cone (4), 6), rotation short circuit (1) back through hole (5,6) can be corresponding, the outer piston (7) that is with respectively of central tube (3), spacer (8) and pressure cap (9), piston (7) upper end is conical, spacer (8) is fixed on the central tube (3), piston (7) links to each other with pressure cap (9), spacer (8) between piston (7) and pressure cap (9) with piston (7), the cavity that pressure cap (9) and central tube (3) surround is divided into chamber (10 up and down, 11), upper chamber (10) communicates with central tube (3), and lower chambers (11) is non-tight chamber and built-in spring (12), and anchor watt (2) is with cone (4) and piston (7) that rail mounted is spacing to be connected.
2, self-locking oil pipe draining anchor according to claim 1 is characterized in that: the track cross section is " dovetail " type or T-shape.
3, self-locking oil pipe draining anchor according to claim 1, it is characterized in that: spring (12) is enclosed within central tube (3) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620004717 CN2869287Y (en) | 2006-02-28 | 2006-02-28 | Self-locking oil pipe discharge anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620004717 CN2869287Y (en) | 2006-02-28 | 2006-02-28 | Self-locking oil pipe discharge anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869287Y true CN2869287Y (en) | 2007-02-14 |
Family
ID=37724222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620004717 Expired - Fee Related CN2869287Y (en) | 2006-02-28 | 2006-02-28 | Self-locking oil pipe discharge anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869287Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696734A (en) * | 2013-12-20 | 2014-04-02 | 东营市福利德石油科技开发有限责任公司 | Differential-pressure type pressure release valve of marine deep well pipe column |
-
2006
- 2006-02-28 CN CN 200620004717 patent/CN2869287Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696734A (en) * | 2013-12-20 | 2014-04-02 | 东营市福利德石油科技开发有限责任公司 | Differential-pressure type pressure release valve of marine deep well pipe column |
| CN103696734B (en) * | 2013-12-20 | 2016-08-24 | 东营市福利德石油科技开发有限责任公司 | Differential-pressurtype type pressure release valve of marine deep well pipe column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |