CN202745765U - Rotary short joint - Google Patents
Rotary short joint Download PDFInfo
- Publication number
- CN202745765U CN202745765U CN 201220242944 CN201220242944U CN202745765U CN 202745765 U CN202745765 U CN 202745765U CN 201220242944 CN201220242944 CN 201220242944 CN 201220242944 U CN201220242944 U CN 201220242944U CN 202745765 U CN202745765 U CN 202745765U
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- China
- Prior art keywords
- wall
- spline
- lower spindle
- drilling rod
- torque lock
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- Expired - Fee Related
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Abstract
The utility model relates to a rotary short joint, which is applied to releasing a completion pipe string by a drillpipe after drilling completion of petroleum and gas. A fixed sleeve is connected at the lower end of a drillpipe connector, a mandrill is in sliding fit with the central hole of the fixed sleeve, a protruding circular step is arranged on the outer wall at the upper end of the mandrill, and plane bearings are respectively arranged at both ends of the circular step. A lower mandrill is in threaded connection at the lower end of the mandrill. A torque locking sleeve is sleeved on the outer wall of the lower mandrill. A lower mandrill spline is arranged on the outer wall of the lower mandrill. A fixing sleeve spline is arranged at the lower end on the outer wall of the fixing sleeve. A torque locking sleeve spline is arranged on the inner wall of the torque locking sleeve. A circular limiting groove is formed on the outer wall of the lower mandrill. A spring pin is fixedly arranged on the wall of the torque locking sleeve. The rotary short joint has the effects that the rotary short joint is connected to the lower end of the conventional drillpipe and the upper end of a sleeve suspender, and in the releasing process of the completion pipe string, the drillpipe rotates freely relative to the completion pipe string. If blocking in the releasing process of the completion pipe string occurs, the completion pipe string is lifted and released to deblock.
Description
Technical field
The utility model relates to the oil and gas well drilling technical field, particularly special tool under a kind of completion interval of well, specifically a kind of rotation short circuit of transferring completion tubular column with drilling rod.
Background technology
At present, along with deepening continuously of exploration and development, the quantity such as deep-well, ultradeep well and horizontal well, extended reach well are more and more, tubing string (such as tail pipe and screen casing etc.) lower deeply increasing, the well track that is lowered to of tubing string becomes increasingly complex, and the lower tubular column technology has also been proposed more and more higher requirement.
Completion tubular column is lowered to the conventional solution that is hampered: the rotation tubing string and on put and put tubing string, set up simultaneously circulation of drilling fluid.This method can effectively solve the completion tubular column of the simple Oil/gas Well of well track and transfer.Yet, when the complicated completion tubular column of the Holes of Complicated Wells such as large displacement is transferred, in case completion tubular column is transferred and is hampered, because the well frictional resistance is larger, be difficult to the whole tubing string of rotation.Especially the Holes of Complicated Wells such as extended reach well, may cause hook to carry when the well frictional resistance is large is zero, completion tubular column is without transferring power.Therefore, conventional tubing string is transferred the very difficult complicated completion tubular column that solves the Holes of Complicated Wells such as large displacement of the solution that is hampered and is transferred the problem that is hampered.
The utility model content
The purpose of this utility model is: a kind of rotation short circuit is provided, is connected to the lower end of conventional drilling rod and is connected to the upper end of casing hanger, in the process that completion tubular column is lowered to, drilling rod can rotate freely with respect to completion tubular column.After being hampered in the process that completion tubular column is lowered to, can by on put and put tubing string and carry out unblocking.
The technical solution adopted in the utility model is: the rotation short circuit mainly is comprised of drilling rod connector, axle, fixed cover, torque lock cover, spring catch, short circuit shear pin and lower spindle.The drilling rod connector is that cylindrical has centre bore, and there is the drilling rod internal thread upper end of drilling rod connector, upper end energy jointed rod; It is characterized in that: there is the connection internal thread drilling rod connector lower end, screw thread is connected with fixed cover in the lower end of drilling rod connector, the fixed cover cylindrical has centre bore, in the fixed cover centre bore, be sliding combined with a single mandrel, axle has centre bore, the upper end outer wall of axle has the ring-shaped step of projection, ring-shaped step is in the groove of drilling rod connector inwall, there is respectively a plane bearing at the two ends of ring-shaped step, plane contact on the upper surface of the plane bearing on top and the drilling rod connector inboard wall groove, the lower surface of the plane bearing of bottom is on the upper surface of fixed cover;
There is the connection internal thread lower end of axle, and screw thread is connected with lower spindle in the lower end of axle, and lower spindle has centre bore, and there is the drilling rod external screw thread lower end of lower spindle; Be notch cuttype at the lower spindle outer wall, at the outer wall cover of lower spindle a torque lock cover is arranged, and the upper end of torque lock cover be enclosed within on the outer wall of fixed cover lower end; Evenly distribute on the torque lock jacket wall and be fixed with the short circuit shear pin, the inner of short circuit shear pin is on the lower spindle outer wall, and the short circuit shear pin is fixed on the torque lock cover on the outer wall of lower spindle; Outer wall at lower spindle has the lower spindle spline, in the outer wall lower end of fixed cover the fixed cover spline is arranged; The fixed cover spline is identical with the structure of lower spindle spline; Inwall at the torque lock cover has torque lock cover spline, and the nominal diameter that fixed cover spline, lower spindle spline and torque lock overlap spline is identical; Torque lock cover spline can be respectively and fixed cover spline and lower spindle spline fitted; The stopper slot that an annular is arranged at the outer wall of lower spindle, stopper slot is in the bottom of lower spindle spline; On the wall of torque lock cover, evenly distribute and be fixed with spring catch.During G.I.H, the torque lock cover is fixed on the lower spindle outer wall by the short circuit shear pin, torque lock cover spline and lower spindle spline fitted; When cutting off short circuit shear pin and torque lock cover upward sliding, torque lock cover spline and fixed cover spline fitted, the inner of spring catch springs in the stopper slot on the lower spindle outer wall simultaneously, and spring catch locks the torque lock cover simultaneously.
In order to make torque lock cover upward sliding, be radially distributed with hydrophthalmia at the outer wall of lower spindle.
The operating principle of summary rotation short circuit.Consult Fig. 1.Rotation short circuit 2 is connected between casing hanger 4 and the drilling rod 1, and the lower end of casing hanger 4 connects completion casing 5, and the lower end of completion casing 5 connects completion tubular column and is lowered to instrument 6, and composition completion casing string passes upper strata sleeve pipe 3 and is lowered into barefoot interval.When completion casing 5 was transferred, the drilling rod connector 8 of rotation short circuit 2 can radially freely rotate with lower spindle 14, and the completion casing 5 that the bottom connects and completion tubular column are lowered to instrument 6 and can rotate.Run into behind the obstacle 7 of barefoot interval by on put and discharge the casing string, completion tubular column is lowered to instrument 6 can remove obstacle 7, continues to be lowered to the completion casing string.When completion casing 5 was transferred to the target location, building the pressure by the ground pitching was suspended on upper strata sleeve pipe 3 inwalls casing hanger 4.Drilling fluid is by hydrophthalmia 19 rear build-up pressures, and the pressure of foundation promotes the torque lock cover and moves up.Torque lock cover 11 is cut off short circuit shear pin 13.Torque lock overlaps 11 upward slidings, and torque lock overlaps 11 upward slidings to be stopped to fixed cover 10 shaft shoulder places, at this moment, rotation short circuit 2 is radially locked with drilling rod 1 and casing hanger 4, at this moment, torque lock cover spline 17 cooperatively interacts with fixed cover spline 15, forms radially torque lock.Spring catch 12 springs in the stopper slot 17, can stop endwisely slipping of torque lock cover 11.This moment, drilling rod 1 can pass to moment of torsion on the casing hanger 4.Rotary drill rod 1 can be realized casing hanger 4 operation of giving up, and will rotate short circuit 2 and separate with casing hanger 4, trips out drilling rod 1 and rotation short circuit 2.Finish drilling rod and transfer the completion tubular column construction.
The beneficial effects of the utility model: the utility model rotation short circuit, be connected to the lower end of conventional drilling rod and be connected to the upper end of casing hanger, in the process that completion tubular column is lowered to, drilling rod can rotate freely with respect to completion tubular column.After being hampered in the process that completion tubular column is lowered to, can by on put and put tubing string and carry out unblocking.
Description of drawings
Fig. 1 is that the utility model rotation short circuit uses view.
Fig. 2 the utility model rotation short-circuit structure generalized section (original state).
Fig. 3 is the working state structure generalized section of cutting off behind the shear pin of rotation short circuit.
Among the figure, the 1-drilling rod, 2-rotates short circuit, 3-upper strata sleeve pipe, the 4-casing hanger, the 5-completion casing, the 6-completion tubular column is lowered to instrument, the 7-obstacle, 8-drilling rod connector, 9-axle, 10-fixed cover, 11-torque lock cover, 12-spring catch, 13-short circuit shear pin, the 14-lower spindle, 15-fixed cover spline, 16-lower spindle spline, 17-torque lock cover spline, 18-stopper slot, 19-hydrophthalmia.
The specific embodiment
Embodiment 1: take one 5 " the rotation short circuit is example, the utility model is described in further detail.
Consult Fig. 2.The utility model rotation short circuit mainly is comprised of drilling rod connector 8, axle 9, fixed cover 10, torque lock cover 11, spring catch 12, short circuit shear pin 13 and lower spindle 14.
The external diameter 110mm of axle 9, lower end external diameter 70mm, there is the connection internal thread lower end, the lower end screw thread be connected with lower spindle 14, it is the centre bore of 50mm that lower spindle 14 has diameter, the lower end of lower spindle 14 has 5 " API standard drilling rod external screw thread.Be notch cuttype at lower spindle 14 outer walls, the torque lock cover 11 of an external diameter 127mm is arranged at the outer wall cover of lower spindle 14, and the upper end of torque lock cover 11 be enclosed within on the outer wall of fixed cover 10 lower ends.Overlap at torque lock and evenly to distribute on 11 walls and be fixed with six short circuit shear pins 13, the inner of short circuit shear pin 13 is on lower spindle 14 outer walls, and short circuit shear pin 13 is fixed on torque lock cover 11 on the outer wall of lower spindle 14.Outer wall at lower spindle 14 has lower spindle spline 16, in the outer wall lower end of fixed cover 10 fixed cover spline 15 is arranged; Fixed cover spline 15 is identical with the structure of lower spindle spline 16; Inwall at torque lock cover 11 has torque lock cover spline 17, and the nominal diameter that fixed cover spline 15, lower spindle spline 16 and torque lock overlap spline 17 is identical.Torque lock cover spline 17 can cooperate with fixed cover spline 15 and lower spindle spline 16 respectively.The stopper slot 18 of an annular is arranged at the outer wall of lower spindle 14, and stopper slot 18 is in the bottom of lower spindle spline 16.On the wall of torque lock cover 11, evenly distribute and be fixed with six spring catch 12.
Outer wall at lower spindle 14 is radially distributed with four hydrophthalmias 19.During G.I.H, torque lock cover 11 is fixed on lower spindle 14 outer walls by short circuit shear pin 13, and torque lock cover spline 17 cooperates with lower spindle spline 16.Consult Fig. 3, drilling fluid is by behind the hydrophthalmia 19, and the pressure of drilling fluid promotes torque lock cover 11 and moves up.Overlap 11 upward sliding 100mm when cutting off short circuit shear pin 13 and torque lock, torque lock cover spline 17 cooperates with fixed cover spline 15, simultaneously the inner of spring catch 12 springs in the stopper slot 18 on lower spindle 14 outer walls, and spring catch 12 is with 11 lockings of torque lock cover simultaneously.
Claims (2)
1. a rotation short circuit mainly is comprised of drilling rod connector (8), axle (9), fixed cover (10), torque lock cover (11), spring catch (12), short circuit shear pin (13) and lower spindle (14); Drilling rod connector (8) is for cylindrical has centre bore, and there is the drilling rod internal thread upper end of drilling rod connector (8); It is characterized in that: there is the connection internal thread drilling rod connector (8) lower end, lower end screw thread at drilling rod connector (8) is connected with fixed cover (10), fixed cover (10) cylindrical has centre bore, in fixed cover (10) centre bore, be sliding combined with a single mandrel (9), axle (9) has centre bore, the upper end outer wall of axle (9) has the ring-shaped step of projection, ring-shaped step is in the groove of drilling rod connector (8) inwall, there is respectively a plane bearing at the two ends of ring-shaped step, plane contact on the upper surface of the plane bearing on top and drilling rod connector (8) inboard wall groove, the lower surface of the plane bearing of bottom is on the upper surface of fixed cover (10);
There is the connection internal thread lower end of axle (9), is connected with lower spindle (14) at the lower end screw thread of axle (9), and lower spindle (14) has centre bore, and there is the drilling rod external screw thread lower end of lower spindle (14); Lower spindle (14) outer wall is notch cuttype, at the outer wall of lower spindle (14) cover a torque lock cover (11) is arranged, and the upper end of torque lock cover (11) is enclosed within on the outer wall of fixed cover (10) lower end; On torque lock cover (11) wall, evenly distribute and be fixed with short circuit shear pin (13), the inner of short circuit shear pin (13) is on lower spindle (14) outer wall, and short circuit shear pin (13) is fixed on torque lock cover (11) on the outer wall of lower spindle (14); Outer wall at lower spindle (14) has lower spindle spline (16), in the outer wall lower end of fixed cover (10) fixed cover spline (15) is arranged; Fixed cover spline (15) is identical with the structure of lower spindle spline (16); Inwall at torque lock cover (11) has torque lock cover spline (17), and the nominal diameter that fixed cover spline (15), lower spindle spline (16) and torque lock overlap spline (17) is identical; The stopper slot (18) of an annular is arranged at the outer wall of lower spindle (14), and stopper slot (18) is in the bottom of lower spindle spline (16); On the wall of torque lock cover (11), evenly distribute and be fixed with spring catch (12).
2. rotation short circuit according to claim 1, it is characterized in that: the outer wall at lower spindle (14) is radially distributed with hydrophthalmia (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242944 CN202745765U (en) | 2012-05-28 | 2012-05-28 | Rotary short joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242944 CN202745765U (en) | 2012-05-28 | 2012-05-28 | Rotary short joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745765U true CN202745765U (en) | 2013-02-20 |
Family
ID=47705182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220242944 Expired - Fee Related CN202745765U (en) | 2012-05-28 | 2012-05-28 | Rotary short joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745765U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252972A (en) * | 2016-08-31 | 2016-12-21 | 中国石油天然气集团公司 | Apply the sealing device at electrodrill cable plug |
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
| CN114183080A (en) * | 2021-12-08 | 2022-03-15 | 中国矿业大学 | Positive and negative rotation automatic disassembly drill rod capable of transmitting large torque and operation method |
-
2012
- 2012-05-28 CN CN 201220242944 patent/CN202745765U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252972A (en) * | 2016-08-31 | 2016-12-21 | 中国石油天然气集团公司 | Apply the sealing device at electrodrill cable plug |
| CN106252972B (en) * | 2016-08-31 | 2019-04-09 | 中国石油天然气集团有限公司 | Apply the sealing device in electrodrill cable plug |
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
| CN114183080A (en) * | 2021-12-08 | 2022-03-15 | 中国矿业大学 | Positive and negative rotation automatic disassembly drill rod capable of transmitting large torque and operation method |
| CN114183080B (en) * | 2021-12-08 | 2024-03-22 | 中国矿业大学 | Forward and reverse rotation automatic disassembly drill rod capable of transmitting large torque and operation method |
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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: 20130220 Termination date: 20210528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |