CN201225109Y - Double-acting releasing tool - Google Patents
Double-acting releasing tool Download PDFInfo
- Publication number
- CN201225109Y CN201225109Y CNU2008201258754U CN200820125875U CN201225109Y CN 201225109 Y CN201225109 Y CN 201225109Y CN U2008201258754 U CNU2008201258754 U CN U2008201258754U CN 200820125875 U CN200820125875 U CN 200820125875U CN 201225109 Y CN201225109 Y CN 201225109Y
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- CN
- China
- Prior art keywords
- releasing tool
- ring
- pole
- center
- double acting
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- Expired - Lifetime
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Abstract
The utility model relates to a dual-purpose releasing tool used for oil well completion, which comprises an upper joint (1), a central rod (2), an outer sleeve (3), a connecting ring (4), a shrink ring (5), a half ring (6), a claw (7), a cutting pin (8), a limit ring (9), a lower joint (11), a pipe nipple (10) and a body (12), wherein most of the outer surface of the central rod (2) is in a step shape reserving a peripheral through hole, and the half ring (6) is arranged in a hollow cavity formed between the connecting ring (4) and the claw (7); a space between the central rod (2) and the limit ring (9) is communicated with the peripheral through hole on the central rod (2), a peripheral through groove is reserved on the end surface of the claw (7); through grooves are uniformly distributed on the periphery of the end part of the body (12), and a cam of the body (12) is matched with a through groove at the upper part of the lower joint (11). The utility model can realize mechanical and hydraulic dual-purpose releasing, reserves the peripheral through holes in a plurality of positions so as to communicate the interior of the tool and the hollow external ring and enhance the capability of the tool to resist external extrusion.
Description
Technical field
The utility model relates to oil gas field brill, completion practice instrument, particularly a kind of novel double acting releasing tool.
Background technology
At present, both at home and abroad at deep-well, ultradeep well, and the tail pipe in the sidetracked hole, horizontal well, Multilateral Wells special well is solid, in the completion practice, one of its key technology is exactly that can the tail pipe string give up smoothly.Existing releasing tool mainly is divided into mechanical type and fluid pressure type dual mode, for the mechanical type releasing tool, after going into well, then can't realize completion tubular column the rotation of completion tubular column, in case when tubing string is hampered, can only by on put and put tubing string and expect head it off, but poor effect often.For fluid pressure type is given up, too much because of its Hydraulic Elements, after tubing string is gone into well, might cause giving up in advance of tubing string because of the bottom pressure excitement, or problem such as can't give up during to predetermined well section.Thus, in carrying out the drilling liner cementing operation process, often cause tail pipe normally to give up, thereby cause the appearance of pulling out sleeve pipe, planting flag bad working environments such as bar because of the inefficacy of releasing tool.
Summary of the invention
The purpose of this utility model is to provide a kind of can the solution can't realize the problem of giving up in the solid completion of tail pipe and can resist the outer double acting releasing tool that squeezes ability by the raising instrument.
The utility model mainly is made up of releasing tool A and casing nipple B, wherein releasing tool A is by top connection, center-pole, overcoat, connecting ring, tighten circle, semi-ring, the pawl cover, shear pin, baffle ring, lower contact is formed, casing nipple B is made up of pipe nipple and body, the external surface many places of the center-pole of releasing tool A are step-like, and leave the circumferential through-hole of some, connecting ring, semi-ring, pawl cover and baffle ring all are sleeved on the center-pole, in the cavity that semi-ring forms between connecting ring and pawl cover, tighten in the exterior circumferential groove that snare is contained in semi-ring, the space that forms between center-pole and the baffle ring is connected with the circumferential through-hole on the center-pole, the pawl cover is the outside cylinder that the many places step is arranged, and leaves the circumferentially saturating groove of some on its end face; Upper part of body is sleeved in the step of pipe nipple inside among the casing nipple B, and there is circumferentially uniform saturating groove of some its end, casing nipple is sleeved on the releasing tool A, and among the casing nipple B in the tooth embedding in the body and the releasing tool the saturating groove in top of lower contact form mutually and cooperate.Semi-ring can be two or polylith among the releasing tool A.Tighten circle among the releasing tool A and can be rubber ring, also can be the extension spring circle, or other elastic rings.Baffle ring can leave the axially extending bore of some among the releasing tool A, or axial pass trough.Lower contact can leave inside and outside circumferential through-hole or the groove that is communicated with among the releasing tool A.Between top connection and center-pole, center-pole and lower contact among the releasing tool A, connecting ring and the pawl cover for being threaded.Can be between pipe nipple and the body among the casing nipple B and be threaded, also can be other modes such as welding manner and connect.
The utility model utilizes the interaction between releasing tool A and the casing nipple B, can realize that machinery gives up with hydraulic double-acting.In addition, utilize the design feature of instrument among the releasing tool A,, effectively solve being communicated with of tool interior and outside annular space, promoted the anti-outer crowded ability of instrument self by the circumferential through-hole that many places are reserved.
Description of drawings
Fig. 1 the utility model structural representation.
Specific embodiments
Below in conjunction with Fig. 1 the utility model is described in further detail, as shown in Figure 1, the utility model mainly is made up of releasing tool A and casing nipple B, wherein releasing tool A is by top connection 1, center-pole 2, overcoat 3, connecting ring 4, tighten circle 5, semi-ring 6, pawl cover 7, shear pin 8, baffle ring 9, lower contact 11 is formed, the external surface many places of the center-pole 2 of releasing tool A are step-like, and leave the circumferential through-hole of some, connecting ring 4, semi-ring 6, pawl cover 7 and baffle ring 9 all are sleeved on the center-pole 2, in the cavity that semi-ring 6 forms between connecting ring 4 and pawl cover 7, tightening circle 5 is sleeved in the exterior circumferential groove of semi-ring 6, the space that forms between center-pole 2 and the baffle ring 9 is connected with the circumferential through-hole on the center-pole 2, pawl cover 7 is the outside cylinder that the many places step is arranged, and leaves the circumferentially saturating groove of some on end face; Casing nipple B is made up of pipe nipple 10 and body 12, the top of body 12 is sleeved in the interior step of pipe nipple 10, and there is circumferentially uniform saturating groove of some its end, and among the casing nipple B in tooth embedding and the releasing tool of body 12 the saturating groove in top of lower contact 11 form mutually and cooperate.Semi-ring 6 can be two or polylith among the releasing tool A.Tighten circle 5 among the releasing tool A and can be rubber ring, also can be the extension spring circle, or other elastic rings.Baffle ring 9 can leave the axially extending bore of some among the releasing tool A, or axial pass trough.Inside and outside circumferential through-hole or the groove that is communicated with can be left in the appropriate location of lower contact 11 among the releasing tool A.Between top connection 1 and center-pole 2, center-pole 2 and lower contact 8 among the releasing tool A, connecting ring 4 and the pawl cover 5 for being threaded.Can be between pipe nipple 10 and the body 12 among the casing nipple B and be threaded, also can be other modes such as welding manner and connect.
Its operating principle is: before going into well, be connected by tooth embedding structure between releasing tool A and the casing nipple B in the assembling process of ground.In going into the well process, utilize the connecting thread of casing nipple B bottom that the lower tube string is linked together with it, and can connect tieback tube or other dependency structures at an upper portion thereof according to actual conditions, simultaneously, utilize the screw thread on releasing tool A top that drilling tool is linked to each other with it., can build the pressure by in managing during down to predetermined well depth at instrument, hydraulic pressure enters hydraulic cavities by the preformed hole on the center-pole 2 of releasing tool A, and it is descending to promote baffle ring 9.At this moment, on carry drilling tool, the pawl cover can be because lose and support and shrink, thereby releasing tool A success and casing nipple B are broken away from, and realizes the purpose of giving up.Under hydraulic pressure is given up situation about losing efficacy, can earlier the tail pipe string be done the end, by pressing down drilling tool, press overcoat by top connection 1, pawl cover 7 is shunk, thereby realize giving up.
Claims (7)
1. double acting releasing tool, mainly form by releasing tool A and casing nipple B, wherein releasing tool A is by top connection (1), center-pole (2), overcoat (3), connecting ring (4), tighten circle (5), semi-ring (6), pawl cover (7), shear pin (8), baffle ring (9), lower contact (11) is formed, casing nipple B is made up of pipe nipple (10) and body (12), it is characterized in that: the external surface many places of the center-pole of releasing tool A (2) are step-like, and leave the circumferential through-hole of some, connecting ring (4), semi-ring (6), pawl cover (7) and baffle ring (9) all are sleeved on the center-pole (2), semi-ring (6) is positioned at the cavity that forms between connecting ring (4) and the pawl cover (7), tighten in the exterior circumferential groove that circle (5) is sleeved on semi-ring (6), the space that forms between center-pole (2) and the baffle ring (9) is connected with the circumferential through-hole on the center-pole (2), pawl cover (7) is the outside cylinder that the many places step is arranged, and leaves the circumferentially saturating groove of some on its end face; The top of body among the casing nipple B (12) is sleeved in the inner step of pipe nipple (10), and there is circumferentially uniform saturating groove of some its end, casing nipple is sleeved on the releasing tool A, and among the casing nipple B in tooth embedding and the releasing tool of body (12) the saturating groove in top of lower contact (11) form mutually and cooperate.
2. a kind of double acting releasing tool according to claim 1 is characterized in that: semi-ring among the releasing tool A (6) can be two or polylith.
3. a kind of double acting releasing tool according to claim 1 is characterized in that: tightens circle (5) among the releasing tool A and can be rubber ring, also can be the extension spring circle, or other elastic rings.
4. a kind of double acting releasing tool according to claim 1 is characterized in that: baffle ring among the releasing tool A (9) can leave the axially extending bore of some, or axial pass trough.
5. a kind of double acting releasing tool according to claim 1 is characterized in that: inside and outside circumferential through-hole or the groove that is communicated with can be left in the appropriate location of lower contact among the releasing tool A (11).
6. a kind of double acting releasing tool according to claim 1 is characterized in that: between top connection among the releasing tool A (1) and center-pole (2), center-pole (2) and lower contact (8), connecting ring (4) and the pawl cover (5) for being threaded.
7. a kind of double acting releasing tool according to claim 1 is characterized in that: can be between pipe nipple among the casing nipple B (10) and the body (12) and be threaded, also can be other modes such as welding manner and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201258754U CN201225109Y (en) | 2008-07-17 | 2008-07-17 | Double-acting releasing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201258754U CN201225109Y (en) | 2008-07-17 | 2008-07-17 | Double-acting releasing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225109Y true CN201225109Y (en) | 2009-04-22 |
Family
ID=40597994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201258754U Expired - Lifetime CN201225109Y (en) | 2008-07-17 | 2008-07-17 | Double-acting releasing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225109Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422812A (en) * | 2013-08-02 | 2013-12-04 | 奥瑞安能源国际有限公司 | Single-well coal bed gas multi-branch horizontal well drilling and completion method |
| CN105525884A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工集团公司 | Pipe column feeding tool with double releasing mechanisms |
-
2008
- 2008-07-17 CN CNU2008201258754U patent/CN201225109Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422812A (en) * | 2013-08-02 | 2013-12-04 | 奥瑞安能源国际有限公司 | Single-well coal bed gas multi-branch horizontal well drilling and completion method |
| CN103422812B (en) * | 2013-08-02 | 2015-11-25 | 奥瑞安能源国际有限公司 | The coal bed gas multi-branch horizontal drilling well of individual well eye and completion method |
| CN105525884A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工集团公司 | Pipe column feeding tool with double releasing mechanisms |
| CN105525884B (en) * | 2014-09-28 | 2017-12-19 | 中国石油化工集团公司 | A kind of tubing string running tool with double relieving mechanisms |
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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: 20090422 |
|
| CX01 | Expiry of patent term |