CN201297148Y - Bolt drill rotor overshot - Google Patents
Bolt drill rotor overshot Download PDFInfo
- Publication number
- CN201297148Y CN201297148Y CNU200820217929XU CN200820217929U CN201297148Y CN 201297148 Y CN201297148 Y CN 201297148Y CN U200820217929X U CNU200820217929X U CN U200820217929XU CN 200820217929 U CN200820217929 U CN 200820217929U CN 201297148 Y CN201297148 Y CN 201297148Y
- Authority
- CN
- China
- Prior art keywords
- screw thread
- conical surface
- overshot
- surface body
- screw
- 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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Abstract
The utility model discloses a bolt drill rotor overshot, one end of the overshot body is equipped with an oil tube thread, another end can be detachable connected with one end of a conical surface body by virtue of screw thread; another end of the overshot body is equipped with one or more than one limit key, the limit key locates in an inner cavity of the conical surface body; out lateral surface of the overshot screw thread is equipped with the out conical surface, one end of the overshot screw thread is equipped with a key groove cooperated with the limit key mutually; three or more than three slots are set along the overshot screw thread lengthways distributed uniformly, each slot has an open end and a bottom end; an inner screw is set on the overshot screw inner side face in accord with the bolt drill thread off; the overshot screw is installed in the conical surface body inner cavity, the limit key cooperates with the key groove mutually; the overshot screw thread out conical surface cooperates with one inner conical surface set on one part inner side face of the conical surface body mutually, the overshot screw thread can axial move along the conical surface in the conical surface body inner cavity. The bolt drill rotor overshot has high salvage success ratio, short construction period, better security and low construction cost.
Description
Technical field
The utility model relates to oil well repairing operation down-hole fishing tool, relates in particular to screw drill rotor fishing socket.
Background technology
The well workover screw drill can directly be converted to water horse power to be realized the rotary power bore, grind, mill need not power rotating disk and drilling rod, shortens the well workover cycle, the reduction workover cost, so be widely used in the workover treatment process brill, grind, mill construction.But the phenomenon of threading off in screw drill stator casing and following assembly shell junction in use can appear in screw drill, causes the screw drill rotor well that falls, and does not still have the effective tool of salvaging screw drill rotor at present.Usually use special-purpose Drilling rod for well-drilling to salvage the screw drill rotor, low, the long construction period of so not only operating expenses height, and success rate.
The utility model content
The technical problems to be solved in the utility model provides a kind of fishing success ratio height, short construction period, safety is good, operating expenses is low screw drill rotor fishing socket.
The utility model comprises cylindrical shell, salvages screw thread and conical surface body, and an end of described cylindrical shell is provided for connecting the tubing thread of oil pipe, and the other end of cylindrical shell removably is connected an end of conical surface body by means of screw thread; On the end face of the other end of described cylindrical shell one or more positive stop keys are set, positive stop key is in the inner chamber of conical surface body; On the lateral surface of salvaging screw thread, male cone (strobilus masculinus) is set, on the end face of salvaging screw thread the keyway that cooperatively interacts with above-mentioned positive stop key is set; Along salvaging screw thread equally distributed slot more than three or three is set vertically, described every slot has openend and bottom, and openend starts from the other end of salvaging screw thread; The consistent internal thread of external screw thread button-type with screw drill dropout position is set on the medial surface of salvaging screw thread; Salvage screw thread and be installed in the inner chamber of conical surface body, positive stop key and keyway cooperatively interact; The male cone (strobilus masculinus) of salvaging screw thread cooperatively interacts with an inner conical surface that is arranged on the conical surface body part medial surface, salvage screw thread can be in the inner chamber of conical surface body along the axial float of conical surface body.
As improvement of the present utility model, also comprise guide shoe, an end of described guide shoe removably is connected the other end of conical surface body by means of screw thread, and the other end of guide shoe is provided with spiral helicine group of mouth.
As further improvement of the utility model, described cylindrical shell comprises top connection, connecting cylinder and transition joint; The described tubing thread that is used to connect oil pipe is arranged on an end of top connection, the other end of top connection removably is connected an end of connecting cylinder by means of screw thread, the other end of connecting cylinder removably connects the first end of indirect by means of screw thread, and the other end of transition joint removably connects an end of conical surface body by means of screw thread; Described positive stop key is arranged on the end face of the transition joint other end.
Screw drill rotor fishing socket in the utility model is connected on the oil pipe by tubing thread, and when fishing string during down to distance screw drill apex rotor 3-4m position, tubing string is transferred on limit flushing, Bian Zhengzhuan, limit, and the screw drill rotor enters in the fishing socket, continues to transfer tubing string.Under the effect of tubing string deadweight, it is up along the inner conical surface of conical surface body that the top of screw drill dropout position screw thread promotes to salvage screw thread.Because in this process, form the gap between the lateral surface of salvaging screw thread and the medial surface of conical surface body, and salvage the slot that evenly distributes and do not connect more than three or three that is vertically arranged with of screw thread, swollen so salvage the internal diameter of screw thread, the internal thread that is provided with on the external screw thread at screw drill dropout position and the salvaging screw thread medial surface cooperatively interacts and is connected.During the upper lifting pipe post, under the effect of screw drill rotor and annex deadweight, it is descending along inner conical surface to salvage screw thread, produces radially clamping force under the effect of conical surface body, so draw tighter and tighter, the screw drill rotor is caught, is held, thereby realize effectively salvaging.Cylindrical shell has the keyway formula to cooperate with salvaging between the screw thread, but transfer torque not only, and has position-limiting action to salvaging screw thread, the circumferential movement between screw thread and the conical surface body is salvaged in restriction, because screw drill dropout position screw thread is a left-hand thread, so stuck can't unfreezing the time when the screw drill rotor in the down-hole, can just change and withdraw from fishing socket; After fishing socket trips out ground, also be convenient to the screw drill rotor is withdrawed from fishing socket.Utilize the fishing socket in the utility model to salvage the more existing Refloatation method of screw drill rotor, can shorten the well workover cycle, reduce workover cost, and dependable performance, the fishing success ratio height.In addition, this tool operation is simple, and is reusable.
Have guide shoe that helical form the dials mouthful screw drill rotor that is used to set right, guarantee that the screw drill rotor introduces fishing socket smoothly.
Cylindrical shell adopts by top connection, connecting cylinder and transition joint three parts combination connecting mode removably, but this project organization simplified manufacturing technique reduces manufacturing cost, is convenient to disassembly and assembly and maintenance.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the structural representation of transition joint in the utility model;
Fig. 3 is the sectional view along A-A line among Fig. 2;
Fig. 4 is a structural representation of salvaging screw thread in the utility model;
Fig. 5 is the sectional view along B-B line among Fig. 4;
Fig. 6 be among Fig. 4 C to view;
Fig. 7 is the sectional view along D-D line among Fig. 6;
Fig. 8 is the structural representation of conical surface body in the utility model.
The specific embodiment
As shown in Figure 1, screw drill rotor fishing socket comprises top connection 1, connecting cylinder 2, transition joint 3, salvages screw thread 4, conical surface body 5 and guide shoe 6.
One end of described top connection 1 is provided for connecting the tubing thread 1-1 of oil pipe, and an end of the other end and connecting cylinder 2 removably interconnects by means of screw thread; One end of the other end of described connecting cylinder 2 and transition joint 3 removably interconnects by means of screw thread, the other end of transition joint 3 removably is connected an end of conical surface body 5 by means of screw thread, one end of the other end of conical surface body 5 and guide shoe 6 removably interconnects by means of screw thread, and the other end of described guide shoe 6 is provided with spiral helicine group of mouth 6-1.
As shown in Figures 2 and 3, on the end face of the other end of transition joint 3, two positive stop key 3-1 are set.Get back to Fig. 1, when transition joint 3 interconnected with 5 assemblings of conical surface body, above-mentioned two positive stop key 3-1 were in the inner chamber of conical surface body 5.
As Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7, on the lateral surface of salvaging screw thread 4, male cone (strobilus masculinus) 4-1 is set, the keyway 4-2 of two symmetries is set on an end face of salvaging screw thread 4.Along salvaging screw thread 4 four equally distributed slot 4-3 are set vertically, described every slot 4-3 has openend 4-3-1 and bottom 4-3-2, and openend starts from the other end of salvaging screw thread 4.On the medial surface of salvaging screw thread 4 internal thread is set, this internal thread is consistent with the external screw thread button-type at screw drill dropout position.
As shown in Figure 8, the inner conical surface 5-1 that cooperatively interacts with the male cone (strobilus masculinus) 4-1 that salvages screw thread 4 is set on a part of medial surface of conical surface body 5.
Get back to Fig. 1, salvage screw thread 4 and be installed in the inner chamber of conical surface body 5, two positive stop key 3-1 cooperatively interact with two keyway 4-2 respectively; The male cone (strobilus masculinus) 4-1 that salvages screw thread 4 cooperatively interacts with the inner conical surface 5-1 of conical surface body 5, and salvaging screw thread 4 can be in the inner chamber of conical surface body 5 along the axial float of conical surface body 5.
Above-mentioned top connection 1, connecting cylinder 2 and transition joint 3 can be manufactured the cylindrical shell of an integral form.
Claims (3)
1, screw drill rotor fishing socket is characterized in that: comprise cylindrical shell, salvage screw thread and conical surface body, an end of described cylindrical shell is provided for connecting the tubing thread of oil pipe, and the other end of cylindrical shell removably is connected an end of conical surface body by means of screw thread; On the end face of the other end of described cylindrical shell one or more positive stop keys are set, positive stop key is in the inner chamber of conical surface body; On the lateral surface of salvaging screw thread, male cone (strobilus masculinus) is set, on the end face of salvaging screw thread the keyway that cooperatively interacts with above-mentioned positive stop key is set; Along salvaging screw thread equally distributed slot more than three or three is set vertically, described every slot has openend and bottom, and openend starts from the other end of salvaging screw thread; The consistent internal thread of external screw thread button-type with screw drill dropout position is set on the medial surface of salvaging screw thread; Salvage screw thread and be installed in the inner chamber of conical surface body, positive stop key and keyway cooperatively interact; The male cone (strobilus masculinus) of salvaging screw thread cooperatively interacts with an inner conical surface that is arranged on the conical surface body part medial surface, salvage screw thread can be in the inner chamber of conical surface body along the axial float of conical surface body.
2, screw drill rotor fishing socket according to claim 1 is characterized in that: also comprise guide shoe, an end of described guide shoe removably is connected the other end of conical surface body by means of screw thread, and the other end of guide shoe is provided with spiral helicine group of mouth.
3, screw drill rotor fishing socket according to claim 1 and 2, it is characterized in that: described cylindrical shell comprises top connection, connecting cylinder and transition joint; The described tubing thread that is used to connect oil pipe is arranged on an end of top connection, the other end of top connection removably is connected an end of connecting cylinder by means of screw thread, the other end of connecting cylinder removably connects the first end of indirect by means of screw thread, and the other end of transition joint removably connects an end of conical surface body by means of screw thread; Described positive stop key is arranged on the end face of the transition joint other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820217929XU CN201297148Y (en) | 2008-11-14 | 2008-11-14 | Bolt drill rotor overshot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820217929XU CN201297148Y (en) | 2008-11-14 | 2008-11-14 | Bolt drill rotor overshot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297148Y true CN201297148Y (en) | 2009-08-26 |
Family
ID=41043127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820217929XU Expired - Fee Related CN201297148Y (en) | 2008-11-14 | 2008-11-14 | Bolt drill rotor overshot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297148Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101983830A (en) * | 2010-11-22 | 2011-03-09 | 上海中盟石油天然气有限公司 | Method for manufacturing fishing socket of female coupling tap |
-
2008
- 2008-11-14 CN CNU200820217929XU patent/CN201297148Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101983830A (en) * | 2010-11-22 | 2011-03-09 | 上海中盟石油天然气有限公司 | Method for manufacturing fishing socket of female coupling tap |
| CN101983830B (en) * | 2010-11-22 | 2012-07-04 | 上海中盟石油天然气有限公司 | Method for manufacturing fishing socket of female coupling tap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20161114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |