CN212508053U

CN212508053U - Hydraulic rotary table for under-pressure well repair

Info

Publication number: CN212508053U
Application number: CN202021212841.6U
Authority: CN
Inventors: 丛洪章; 王庆贺; 丛希明; 马超; 金学国; 张道平; 李玉平; 陈存玉; 李兴鲁; 汤占元
Original assignee: Shanxi Brightone Engineering Technology Ltd
Current assignee: Shanxi Brightone Engineering Technology Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-02-09
Anticipated expiration: 2030-06-28

Abstract

The utility model relates to a hydraulic rotary disc for under-pressure well repair, which comprises a shell, a central tube which extends up and down is rotatably arranged in the shell, a jacket which is arranged corresponding to the axial direction of the central tube is rotatably arranged in the shell, a clamping jaw plate which can drive the jacket to clamp a pipe column is arranged in the jacket, a large gear is coaxially and fixedly arranged on the jacket, an intermediate gear shaft is rotatably arranged in the shell, an intermediate gear which is meshed with the large gear is sleeved on the intermediate gear shaft, a plurality of driven gears are further sleeved on the intermediate gear shaft, gear engaging gears which are respectively meshed with the driven gears are rotatably arranged in the shell, a hydraulic motor is arranged on the shell, a gear engaging mechanism which controls the hydraulic motor to be selectively matched with the gear engaging gears is arranged in the shell, the hydraulic rotary disc can bear torque and can bear the jacking force on the pipe column simultaneously, and can, can finish the major repair processes of drilling, plugging, sleeving, grinding, milling and the like, and ensure the daily maintenance work of pressurized well repair equipment.

Description

Hydraulic rotary table for under-pressure well repair

Technical Field

The utility model relates to the field of mechanical equipment, specific hydraulic pressure carousel for well workover is pressed in area that says so.

Background

When the oil field completes the operations of underground casing milling, grinding milling, cement plug drilling, button making and the like in the well repairing operation, the equipment such as a well repairing platform, a major repair operation machine and the like needs to be matched, and the operation is completed by matching the high-power workover rig power with a mechanical turntable.

The existing hydraulic rotary table is used for clamping and fixing a pipe column or a drill rod due to structural reasons, so that the slipping phenomenon often occurs, and particularly, the slipping phenomenon is more likely to occur if the existing hydraulic rotary table is subjected to the upward jacking (downward pressing) force from the pipe column in the torque output process.

Disclosure of Invention

The utility model aims at the above-mentioned problem provide a tubular column centre gripping is reliable, can bear the area that comes from tubular column top or push down pressure and press hydraulic pressure carousel for well workover under pressure.

In order to achieve the above object, the utility model relates to a hydraulic pressure carousel for workover is pressed in area, including the casing, its structural feature is: the utility model discloses a gear shifting mechanism, including the casing, the casing is interior to rotate and to be installed the center tube that extends from top to bottom, the casing is interior to rotate and to be installed the clamp cover that sets up with the center tube axial correspondence, it presss from both sides tight hubei province board of clamp cover clamping pipe to install in the clamp cover, coaxial fixed mounting has the gear wheel on the clamp cover, intermediate gear shaft is installed in the casing rotation, the last cover of intermediate gear shaft is equipped with the intermediate gear with gear wheel engaged with, still the cover is equipped with a plurality of driven gears on the intermediate gear shaft, the casing is interior to rotate and to be installed respectively with the gear shifting gear of a plurality of.

After the structure is adopted, the device is suitable for pressurized workover equipment, can finish the overhaul procedures of drilling, plugging, sleeving, grinding, milling and the like, and ensures the daily maintenance work of the pressurized workover equipment; the special design of the clamping jaw plate can bear torque (drive a pipe column in a well to rotate) and bear the upward jacking (downward pressing) force of the pipe column, and in addition, the clamping jaw plates with different diameters are replaced, so that the clamping jaw plate can be suitable for pipe columns or drill rods with different diameters; the gear engaging mechanism can obtain the output of different rotating speeds and torques by adjusting the position and the input pressure according to different working conditions on site, can be set into three operation modes of manual operation, pneumatic operation and hydraulic operation, and is controlled by an operation platform operator or a hydraulic control room operator respectively.

Regarding the mounting structure who presss from both sides tight jaw board, encircle to be equipped with threely on the outer wall of center tube and respectively slidable mounting in three guide channel. After adopting above-mentioned structure, can realize pressing from both sides tight tubular column from the centering through three tight hubei province board of clamp, guarantee that the tubular column presss from both sides tightly reliably, the location is accurate.

Regarding the drive structure of the clamping jaw plate of the clamping sleeve, the clamping sleeve is sleeved outside the clamping jaw plate, and a slope plate for pushing the clamping jaw plate to slide inwards is arranged on the inner wall of the clamping sleeve. After the structure is adopted, the slope plate is provided with an inclined plane, the outer end of the clamping jaw plate is provided with a smooth transition part, the smooth transition part and the slope plate form a motion form similar to a cam mechanism, and when the jacket rotates, the slope plate pushes the clamping jaw plate to move inwards, so that the three clamping jaw plates clamp the tubular column together.

For the pipe column to press from both sides reliably, press from both sides the one end fixed mounting that the hubei province board is close to the center tube axle center and have the tooth piece, the one end that the tooth piece is close to the center tube axle center is equipped with the arc surface that suits with the pipe column outer wall, is provided with bellied spine on this arc surface. The tooth block can be connected with the clamping jaw plate through the bolt, so that the tooth block is convenient to replace, and the pipe column or the drill rod with different diameters can be suitable for replacing the tooth blocks with different diameters.

Regarding the specific structure of the driven gear, the intermediate gear shaft is vertically arranged up and down, the driven gear comprises a low-gear driven gear and a high-gear driven gear which are fixedly arranged on the intermediate gear shaft, and the low-gear driven gear and the high-gear driven gear are arranged at intervals up and down.

Regarding the concrete structure of the gear engaging gear, the gear engaging gear comprises a low gear and a high gear which are rotatably arranged in a shell, the low gear and the high gear are respectively meshed with a low gear driven gear and a high gear driven gear, and the low gear and the high gear are arranged at intervals up and down.

The specific structure of the gear engaging mechanism comprises an internal thread arranged on inner rings of a low-gear and a high-gear, a spline shaft extending up and down is fixedly arranged on an output shaft of a hydraulic motor, a spline sleeve meshed with the spline shaft is sleeved on the outer side of the spline shaft, the spline sleeve is arranged on the spline shaft in a vertical sliding mode, an external thread meshed with the internal thread is arranged on the outer wall of the spline sleeve, and a gear shifting driving device capable of driving the spline sleeve to slide up and down is arranged in a shell. The two groups of gears have different transmission ratios, so that the purpose of outputting different rotating speeds and torques can be achieved. When the external thread of the spline housing is meshed with the internal thread of the high-grade gear, high-grade rotating speed is output; and when the external threads of the spline sleeve are meshed with the internal threads of the low-gear, the low-gear rotating speed is output.

Regarding the concrete structure of the gear shifting driving device, the gear shifting driving device comprises a gear engaging motor arranged in a shell, a swing arm is arranged on an output shaft of the gear engaging motor, and the other end of the swing arm is hinged on a spline sleeve. After the structure is adopted, when the gear engaging motor rotates forwards, the other end of the swing arm swings upwards, and at the moment, the external thread of the spline sleeve is meshed with the internal thread of the high-grade gear; when the gear engaging motor rotates reversely, the other end of the swing arm swings downwards, and at the moment, the external thread of the spline sleeve is meshed with the internal thread of the low-gear; in addition, when the swing arm is horizontally arranged, the spline housing is not meshed with the gear, and the motor is in an idle running state. The gear engaging mechanism can be set to be in three operation modes of manual operation, pneumatic operation and hydraulic operation and is controlled by an operation platform operator or a hydraulic control room operator respectively.

In order to facilitate the underground operation of the workover rig, the upper part of the shell is provided with a connecting base. After adopting above-mentioned structure, connect the base and reverse the top of installing in ordinary well head or area pressure workover equipment tool string, conveniently accomplish heavy repair processes such as drilling plug, cover, grinding, milling.

Because above-mentioned technical scheme's application is following right the utility model discloses an advantage effect carries out concrete analysis.

To sum up, the utility model can be applied to pressurized workover equipment, can complete the overhaul procedures of drilling plug, sleeving, grinding, milling and the like, and ensures the daily maintenance work of the pressurized workover equipment; the special design of the clamping jaw plates can bear torque (drive a pipe column in a well to rotate) and bear the upward jacking (downward pressing) force of the pipe column, the three clamping jaw plates can be used for realizing self-centering clamping of the pipe column, the clamping reliability and the positioning accuracy of the pipe column are ensured, and the pipe column or the drill rod with different diameters can be suitable by replacing tooth blocks with different diameters; the gear engaging mechanism can obtain the output of different rotating speeds and torques by adjusting the position and the input pressure according to different working conditions on site.

Drawings

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic structural diagram of a use state;

fig. 4 is a partially enlarged schematic structural diagram of a point a in fig. 1.

In the figure: the hydraulic motor 1, a swing arm 2, a high-grade gear 3, a gear engaging motor 4, a shell 5, a low-grade gear 6, a low-grade driven gear 7, an intermediate gear shaft 8, a large gear 9, a clamping jaw plate 10, a tooth block 11, a central pipe 12, a connecting base 13, a jacket 14, a high-grade driven gear 15, a gear engaging gear 16, an intermediate gear 17, a spline housing 18, a spline shaft 19, a guide channel 20 and a slope plate 21.

Detailed Description

Referring to the accompanying drawings, the utility model discloses a hydraulic pressure carousel for well workover is pressed in area, including casing 5, the center tube 12 of extension about 5 internal rotations of casing are installed, 5 internal rotations of casing are installed and are corresponded the clamp 14 that sets up with the center tube 12 axial, it presss from both sides tight hubei province board 10 to install the clamp that can drive clamp cover 14 and press from both sides tight tubular column to press from both sides the cover in 14, it has gear wheel 9 to press from both sides coaxial fixed mounting on the

cover

14, 5 internal rotations of casing are installed counter gear shaft 8, the cover is equipped with intermediate gear 17 with gear wheel 9 engaged with on the counter gear shaft 8, it is equipped with a plurality of driven gear still to overlap on the

counter gear shaft

8, 5 internal rotations of casing are installed respectively with a plurality of driven gear engaged with gear 16 complex mechanisms of.

After the structure is adopted, the device is suitable for pressurized workover equipment, can finish the overhaul procedures of drilling, plugging, sleeving, grinding, milling and the like, and ensures the daily maintenance work of the pressurized workover equipment; the special design of the clamping jaw plate 10 can bear the torque (drive the pipe column in the well to rotate) and bear the jacking (pressing) force of the pipe column, and in addition, the clamping jaw plate 10 with different diameters can be replaced to adapt to pipe columns or drill rods with different diameters; the gear engaging mechanism can obtain the output of different rotating speeds and torques by adjusting the position and the input pressure according to different working conditions on site, can be set into three operation modes of manual operation, pneumatic operation and hydraulic operation, and is controlled by an operation platform operator or a hydraulic control room operator respectively.

With regard to the mounting arrangement for the clamping jaws 10, three guide channels 20 are provided around the outer wall of the central tube 12 and are each slidably mounted therein. After adopting above-mentioned structure, can realize pressing from both sides tight tubular column from the centering through three tight hubei province board 10 of clamp, guarantee that the tubular column presss from both sides tightly reliably, the location is accurate.

Regarding the driving structure of the clamping jaw plate 10 by the jacket 14, the jacket 14 is sleeved outside the clamping jaw plate 10, and a slope plate 21 for pushing the clamping jaw plate 10 to slide inwards is arranged on the inner wall of the jacket 14. After adopting the structure, the slope plate 21 is provided with an inclined plane, the outer end of the clamping jaw plate 10 is provided with a smooth transition part, the smooth transition part and the slope plate 21 form a motion form similar to a cam mechanism, when the jacket 14 rotates, the slope plate 21 pushes the clamping jaw plate 10 to move inwards, so that the three clamping jaw plates 10 clamp the tubular column together.

For the reliable clamping of the pipe column, a tooth block 11 is fixedly installed at one end of the clamping jaw plate 10 close to the axis of the central pipe 12, an arc surface matched with the outer wall of the pipe column is arranged at one end of the tooth block 11 close to the axis of the central pipe 12, and a raised spine is arranged on the arc surface. The tooth block 11 can be connected with the clamping jaw plate 10 through a bolt, so that the tooth block 11 is convenient to replace, and the tooth block 11 with different diameters can be suitable for pipe columns or drill rods with different diameters.

Regarding the specific structure of the driven gear, the intermediate gear shaft 8 is vertically arranged up and down, the driven gear comprises a low-gear driven gear 7 and a high-gear driven gear 15 which are fixedly arranged on the intermediate gear shaft 8, and the low-gear driven gear 7 and the high-gear driven gear 15 are arranged at intervals up and down.

Regarding the specific structure of the engaging gear 16, the engaging gear 16 includes two low gear 6 and high gear 3 rotatably mounted in the housing 5, the low gear 6 and the high gear 3 are respectively engaged with the low gear driven gear 7 and the high gear driven gear 15, and the low gear 6 and the high gear 3 are vertically spaced apart from each other.

The specific structure of the gear engaging mechanism comprises internal threads arranged on inner rings of a low-gear 6 and a high-gear 3, a spline shaft 19 extending up and down is fixedly arranged on an output shaft of a hydraulic motor 1, a spline sleeve 18 meshed with the spline shaft 19 is sleeved on the outer side of the spline shaft 19, the spline sleeve 18 is arranged on the spline shaft 19 in a vertically sliding mode, external threads meshed with the internal threads are arranged on the outer wall of the spline sleeve 18, and a gear shifting driving device capable of driving the spline sleeve 18 to slide up and down is arranged in a shell 5. The two groups of gears have different transmission ratios, so that the purpose of outputting different rotating speeds and torques can be achieved. When the external thread of the spline housing 18 is meshed with the internal thread of the high-grade gear 3, high-grade rotating speed is output; when the external thread of the spline housing 18 is engaged with the internal thread of the low gear, the low gear rotating speed is output.

Regarding the specific structure of the gear shifting driving device, the gear shifting driving device comprises a gear engaging motor 4 installed in a housing 5, a swing arm 2 is installed on an output shaft of the gear engaging motor 4, and the other end of the swing arm 2 is hinged on a spline housing 18. After the structure is adopted, when the gear engaging motor 4 rotates forwards, the other end of the swing arm 2 swings upwards, and at the moment, the external thread of the spline sleeve 18 is meshed with the internal thread of the high-grade gear 3; when the gear motor 4 rotates reversely, the other end of the swing arm 2 swings downwards, and at the moment, the external thread of the spline sleeve 18 is meshed with the internal thread of the low-gear; when the swing arm 2 is horizontally disposed, the spline housing 18 is not engaged with the engaging gear 16, and the motor is in an idling state. The gear engaging mechanism can be set to be in three operation modes of manual operation, pneumatic operation and hydraulic operation and is controlled by an operation platform operator or a hydraulic control room operator respectively.

In order to facilitate the downhole operation of the workover rig, the upper part of the shell 5 is provided with a connecting base 13. After adopting above-mentioned structure, connect the base 13 and reversely install in the top of ordinary well head or area pressure workover equipment tool string, conveniently accomplish heavy repair processes such as drilling plug, cover, grind, mill.

To sum up, the present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications are intended to be within the scope of the present invention.

Claims

1. The utility model provides a hydraulic pressure carousel for workover is pressed in area, includes casing (6), characterized by: center tube (12) that extend from top to bottom are installed to casing (6) internal rotation, casing (6) internal rotation is installed and is corresponded the clamp cover (14) that sets up with center tube (12) axial, press from both sides the tight hubei province board (10) of clamp cover (14) clamp tight tubular column of installing in cover (14), coaxial fixed mounting has gear wheel (9) on pressing from both sides cover (14), intermediate gear shaft (8) are installed to casing (6) internal rotation, the cover is equipped with intermediate gear (17) with gear wheel (9) engaged with on intermediate gear shaft (8), still the cover is equipped with a plurality of driven gear on intermediate gear shaft (8), casing (6) internal rotation is installed and is respectively with a plurality of driven gear engaged with gear (16) that put in gear, install hydraulic motor (1) on casing (6), install in casing (6) control hydraulic motor (1) and a plurality of gear (16) one complex mechanism.

2. The hydraulic rotary table for repairing a well under pressure as set forth in claim 1, wherein: the outer wall of the central tube (12) is provided with three guide channels (20) which are penetrated inside and outside in a surrounding manner, and the clamping jaw plates (10) are provided with three guide channels (20) which are respectively arranged in a sliding manner.

3. The hydraulic rotary table for repairing a well under pressure as set forth in claim 2, wherein: the clamping sleeve (14) is sleeved on the outer side of the clamping jaw plate (10), and a slope plate (21) for pushing the clamping jaw plate (10) to slide inwards is arranged on the inner wall of the clamping sleeve (14).

4. The hydraulic rotary table for repairing a well under pressure as set forth in claim 3, wherein: one end of the clamping jaw plate (10) close to the axis of the central tube (12) is fixedly provided with a tooth block (11), one end of the tooth block (11) close to the axis of the central tube (12) is provided with an arc surface adapted to the outer wall of the tubular column, and the arc surface is provided with a raised spine.

5. The hydraulic rotary table for repairing a well under pressure as set forth in claim 1, wherein: the intermediate gear shaft (8) is vertically arranged from top to bottom, the driven gear comprises a low-gear driven gear (7) and a high-gear driven gear (15) which are fixedly arranged on the intermediate gear shaft (8), and the low-gear driven gear (7) and the high-gear driven gear (15) are arranged at intervals from top to bottom.

6. The hydraulic rotary table for repairing a well under pressure as set forth in claim 5, wherein: the gear engaging gear (16) comprises a low gear (5) and a high gear (3) which are rotatably arranged in the shell (6), the low gear (5) and the high gear (3) are respectively meshed with the low gear driven gear (7) and the high gear driven gear (15), and the low gear (5) and the high gear (3) are arranged at intervals up and down.

7. The hydraulic rotary table for repairing a well under pressure as set forth in claim 6, wherein: the gear engaging mechanism comprises an inner ring arranged on a low-gear (5) and an inner ring arranged on a high-gear (3), a spline shaft (19) extending up and down is fixedly arranged on an output shaft of the hydraulic motor (1), a spline sleeve (18) meshed with the spline shaft (19) is sleeved on the outer side of the spline shaft (19), the spline sleeve (18) is vertically and slidably arranged on the spline shaft (19), an external thread meshed with the internal thread is arranged on the outer wall of the spline sleeve (18), and a gear shifting driving device capable of driving the spline sleeve (18) to vertically slide is arranged in the shell (6).

8. The hydraulic rotary table for workover under pressure according to claim 7, wherein: the gear shifting driving device comprises a gear engaging motor (4) arranged in a shell (6), a swing arm (2) is arranged on an output shaft of the gear engaging motor (4), and the other end of the swing arm (2) is hinged on a spline sleeve (18).

9. The hydraulic rotary table for repairing a well under pressure according to any one of claims 1 to 8, wherein: and a connecting base (13) is arranged at the upper part of the shell (6).