CN202081850U - Returnable and reversible slip overshot - Google Patents
Returnable and reversible slip overshot Download PDFInfo
- Publication number
- CN202081850U CN202081850U CN201020665309XU CN201020665309U CN202081850U CN 202081850 U CN202081850 U CN 202081850U CN 201020665309X U CN201020665309X U CN 201020665309XU CN 201020665309 U CN201020665309 U CN 201020665309U CN 202081850 U CN202081850 U CN 202081850U
- Authority
- CN
- China
- Prior art keywords
- slips
- slip
- upper joint
- returnable
- top connection
- 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
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a returnable and reversible slip overshot. The returnable and reversible slip overshot consists of an upper joint, a pedal dividing slip, a cylinder body and a positioning pin. The upper joint is internally provided with a longitudinal track and a peripheral track; a two-way separating key at the upper part of the pedal dividing slip can be moved on the longitudinal rail in the upper joint up and down; moreover, the two-way separating key can be circularly rotated on the peripheral track of the upper joint; and the positioning pin is fixed on the inner end face of the upper joint. The two-way separating key of the pedal dividing slip is transversely positioned; the two-way separating key is prevented from rotating more than 180 degrees in the peripheral track by the positioning pin; the cylinder body is fixedly connected with the upper joint; the inside of the cylinder body is matched with a taper slope outside the pedal dividing slip to form a radial force. The returnable and reversible slip overshot can fish, reverse and withdraw, effectively avoids the occurrence of drilling troubles, increases labor efficiency, avoids unnecessary complicated construction procedures, effectively solves the returnable and reversible problems of tubular fishing tools.
Description
Technical field
The utility model relates to petroleum production engineering workover treatment field, oil field, particularly a kind of a kind of fishing tool that is used for workover treatment.
Background technology
At home in the oil extraction process, often run in the well tubing junk well problem that falls, need to salvage and handle, a lot of situations are blocked owing to fish, if blindly salvaging can cause more complex engineering accident, after the down-hole fishing tool must guarantee to drag for and obtain, under unfreezing can't case of successful, can satisfy after salvaging junk back-off can not unfreezing the time, can satisfy simultaneously under back-off falls motionless situation that again drilling tool safety is withdrawed from, the tube class fishing tool that does not also have this kind to move back at present can to fall.
The utility model content
In the workover treatment process, in to sand card inspection pump sump and salvaging process, because upper lifting pipe post activity unfreezing can not be successful, when carrying out back-off processing bottom tubing string to the well junk that falls for a long time, the bottom tubing string can occur and be held, or the phenomenon opened from the body of oil well pump occur from box cupling.Drag in taking this moment and when taking to load greatly the activity unfreezing, cause the phenomenon that rises and decline fish and drag for unreal fish easily, easily cause more complicated down-hole engineering accident.When perhaps salvaging the injection well downhole flow regulator that blocked, production mandrel tubing string sometimes, in drag for and can't realize, judge which endowel of unclear trouble of lost tool in hole is blocked outward when dragging for, salvage if blindly carry out moving back fishing tool, will certainly cause not open the engineering accident of can not moving back.
Problem to be solved in the utility model is: provide a kind of can be in the workover rig service to oil well process, appearance tubing junk falls behind the well, in oil pipe, salvage under the situation about can not carry out, and during the outer salvaging mode of the oil pipe that carries out, can either externally salvage the tubing junk, also can under the tubing junk can't the unfreezing situation, realize back-off, satisfy that simultaneously salvaging drilling tool safety is withdrawed from, reduce the purpose that engineering accident takes place.
First aspect, the utility model provide a kind of the moving back can the dipper of falling the slips, and by top connection, distinguish slips, cylindrical shell, shop bolt are formed, and it is characterized in that long rails and circumferential track are arranged in the described top connection; The distinguish slips is packed into by the two-way disengaging latch in top in the top connection long rails; Behind the cylindrical shell suit distinguish slips with the screwed connection of top connection bottom; Shop bolt is fixed on the top connection inner face.
Can the dipper of falling the slips according to described a kind of the moving back of first aspect, it is characterized in that described inner barrel is a tapered slope.
Can the dipper of falling the slips according to described a kind of the moving back of first aspect, it is characterized in that described distinguish slips is outside and be tapered slope.
Can the dipper of falling the slips according to described a kind of the moving back of first aspect, it is characterized in that described distinguish slips lobe number is at least 2 lobes.
For addressing the above problem, the utility model can move back and can be made up of top connection, distinguish slips, cylindrical shell, shop bolt by the dipper of falling the slips.Long rails and circumferential track are arranged in the top connection; The two-way disengaging latch in distinguish slips top can move up and down by the long rails in top connection; Two-way disengaging latch also can rotate in the circumferential track of top connection; Shop bolt is fixed on the top connection internal end surface, make the two-way disengaging latch located lateral of distinguish slips, shop bolt stops two-way disengaging latch circumferentially rotating above 180 ° in the slideway, cylindrical shell is fixedlyed connected with top connection, and inner barrel is that the tapered slope of tapered slope and distinguish slips outside cooperates the formation radial load.
After adopting this spline structure, because simple in structure, cost is low.Can realize simultaneously can dragging for, can fall, can moving back.Effectively avoid the generation of down-hole accident.Raise labour efficiency, avoid unnecessary complicated construction operation.Efficiently solve the tubing fishing tool and can move back, can fall a difficult problem.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further details
Fig. 1-the 1st, the utility model is a kind of move back can the dipper of falling the slips structural representation, Fig. 1-2 is along the sectional view of A-A direction among Fig. 1-1.
Fig. 2 be the utility model a kind of move back can the dipper of falling the slips in distinguish slips structural representation.
Fig. 3 be the utility model a kind of move back can the dipper of falling the slips in the top connection structural representation.
The specific embodiment:
The utility model can move back and can be made up of top connection 1, distinguish slips 2, cylindrical shell 3, shop bolt 4 by the dipper of falling the slips.1 has long rails 6 and circumferential track 7 in the top connection; The two-way disengaging latch 5 in distinguish slips 2 tops can move up and down by the long rails in top connection; Two-way disengaging latch 5 also can rotate in the circumferential track 7 of top connection 1; Cylindrical shell 3 is fixedlyed connected with top connection 1; Cylindrical shell 3 inside are that the tapered slope of tapered slope and distinguish slips 2 outsides cooperates the formation radial load.Shop bolt 4 is fixed on top connection 1 internal end surface, and the two-way disengaging latch 5 on the distinguish slips 2 is circumferentially located.
When the oil well operation is salvaged, can fall to move back the slips dipper and be connected drilling tool bottom G.I.H, the tubing fish enters dipper under the effect of slips dipper bottom guide shoe, it is up that the tubing junk is washed distinguish slips 2 open, when the junk top withstands on distinguish slips 2 bottom surfaces, it is up to drive distinguish slips 2, when distinguish slips 2 end faces withstand on top connection 1 bottom surface, the tubing junk stops to move upward with the slips dipper, on carry drilling tool, it is descending that this moment, distinguish slips 2 was followed the tubing junk under the effect of slips frictional force, when the male cone (strobilus masculinus) of distinguish slips 2 during with the inner conical surface contact of dipper cylindrical shell 3, holds the tubing junk tightly and realize salvaging thereby distinguish slips 2 produces radial loads; If the drilling tool activity can not unfreezing, when needing back-off to handle, on carry drilling tool to point of neutralization back-off, the two-way disengaging latch 5 in the top of distinguish slips 2 at this moment is in the long rails up and down, the power that two-way disengaging latch 5 combines with the cone of cylindrical shell 3 inside with the peripheral force and the bottom distinguish slips 2 outside cones of long rails, bear circumferential moment of torsion simultaneously, thereby open the bottom by the card junk; If when not opening junk and needing drilling tool withdrawed from, pause downwards and hit drilling tool, distinguish slips 2 male cone (strobilus masculinus)s are separated with cylindrical shell 3 inner conical surfaces, distinguish slips 2 up top connection 1 bottom surfaces that withstand on, the two-way disengaging latch 5 in top of distinguish slips 2 enters the circumferential track entrance of top connection 1 at this moment, rotation drilling tool 180 degree, make two-way disengaging latch 5 enter in the circumferential track fully, on carry the two-way disengaging latch of drilling tool 5 and stop distinguish slips 2 descending, distinguish slips male cone (strobilus masculinus) is separated with the dipper inner conical surface, on carry drilling tool and can withdraw from dipper; The lobe number of above-mentioned distinguish slips is at least more than 2 lobes, and 6 lobes are best.
Claims (4)
- One kind can move back can the dipper of falling the slips, by top connection (1), distinguish slips (2), cylindrical shell (3), shop bolt (4) are formed, and it is characterized in that long rails (6) and circumferential track (7) are arranged in the described top connection (1); Distinguish slips (2) is packed into by the two-way disengaging latch in top (5) in the top connection long rails; Cylindrical shell (3) suit distinguish slips (2) back and top connection (1) bottom screwed connection; Shop bolt (4) is fixed on top connection (1) inner face.
- 2. a kind of moving back according to claim 1 can the dipper of falling the slips, it is characterized in that described cylindrical shell (3) is inner to be tapered slope.
- 3. a kind of moving back according to claim 1 can the dipper of falling the slips, it is characterized in that described distinguish slips (2) is outside to be tapered slope.
- 4. a kind of moving back according to claim 1 can the dipper of falling the slips, it is characterized in that the lobe number of described distinguish slips (2) is at least 2 lobes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020665309XU CN202081850U (en) | 2010-12-17 | 2010-12-17 | Returnable and reversible slip overshot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020665309XU CN202081850U (en) | 2010-12-17 | 2010-12-17 | Returnable and reversible slip overshot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081850U true CN202081850U (en) | 2011-12-21 |
Family
ID=45342486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020665309XU Expired - Fee Related CN202081850U (en) | 2010-12-17 | 2010-12-17 | Returnable and reversible slip overshot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202081850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723400A (en) * | 2018-12-27 | 2019-05-07 | 贵州航天凯山石油仪器有限公司 | A kind of downhole instrument salvaging structure |
-
2010
- 2010-12-17 CN CN201020665309XU patent/CN202081850U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723400A (en) * | 2018-12-27 | 2019-05-07 | 贵州航天凯山石油仪器有限公司 | A kind of downhole instrument salvaging structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213868B (en) | Desirable bore anchor packer | |
| WO2013152457A1 (en) | Sidewall coring while drilling tool | |
| CN201013287Y (en) | Retrievable fishing barrel for reclaiming bridging plug | |
| CN205689156U (en) | A kind of high-adaptability stress decentralized bidirectional hydraulic drilling jar | |
| CN201723190U (en) | Unconsolidated deposit hydraulic pressure type sealed coring tool | |
| CN206801512U (en) | A kind of underground continuous oil pipe fishing drags for integrated tool with cutting | |
| CN202081850U (en) | Returnable and reversible slip overshot | |
| CN206830100U (en) | Rotary steering throw in catcher | |
| CN210396684U (en) | Integral returnable large-tonnage integrated overshot | |
| CN203961871U (en) | Oil recovery fishing device | |
| CN201991483U (en) | Pipe column structure suitable for laminated sand fracturing of packer | |
| CN201843556U (en) | Hydraulic withdrawable overshot | |
| CN108952614B (en) | Ratchet type is fishing device in pit | |
| CN107288567B (en) | Retractable type milling and fishing integrated device and fishing method thereof | |
| CN201738832U (en) | Back-off safety joint | |
| CN202000943U (en) | Spirally-guided retrievable salvaging spear | |
| CN204571900U (en) | Rotating stuck-freeing fishing tool | |
| CN201428408Y (en) | General overshot for oil well workover operation | |
| CN204225825U (en) | Oil well test instruments fisher | |
| CN201310311Y (en) | Composite latch jack | |
| CN209339907U (en) | A kind of sealing-sleeve type tubing drain | |
| CN204082068U (en) | Oil field operation salvages fettling installation | |
| CN202731807U (en) | Downhole fishing tool | |
| CN203050579U (en) | Mechanical release device for coiled tubing fracturing | |
| CN202745783U (en) | Drilling and milling type spiral external hook for salvaging clustered sucker rod |
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: 20111221 Termination date: 20121217 |