Stand for screwing and unscrewing the threaded connection of hydraulic downhole motors

 

The invention relates to the field of engineering, and in particular to equipment for servicing hydraulic downhole motors (HDM) and is intended for screwing and unscrewing the threaded connections of HDM. What's new is that in a well-known stand for screwing and unscrewing the threaded connection of hydraulic downhole motors (HDM), comprising a frame, a power drive installation cartridge with the possibility of accommodation in the last propulsion section HDM, sliding rear delay with the ability to accommodate a motor section mounted on the frame supporting the trolley and power unit actuator movable back delay, according to the invention the movable rear delay consists of two components: the base and mounted on the base and attached to it from tipping over not less than two grippers delay device, which contains the cartridge with eccentric Cams and mounted on the shaft of the Chuck ring gear, which is connected with placed in the delay device, a pneumatic cylinder, whereby the inhibiting device has the ability to move in the transverse direction relative to the base and limited regards endeley section HDM, on delaying device installed sensors torque control. The invention provides enhanced technological capabilities of the stand due to the possibility of execution of works by screwing and unscrewing the threaded connections of HDM in the layout of the whipstock. 3 Il.

The invention relates to the field of engineering, and in particular to equipment for servicing hydraulic downhole motors (HDM), and is intended for screwing and unscrewing the threaded connections of HDM.

Known mechanical key KT-400 design Anniebonnie, includes power unit, designed to create torque, the clamping part, which is designed to delay the fixed part, the threaded part and a pair of roller hosting HDM. The conveyor consists of a rail-bars and rollers installed on them. (C. A. Dobkin, D. M. Nikitin, A. A. Utrobin Maintenance and repair of hydraulic downhole motors, M., Nedra, 1983, S. 83-85).

The disadvantage of a mechanical key is the inability of the operations of screwing and unscrewing the threaded connections of HDM in the layout standoff due to immobility clamping part is VNIIBT, includes power unit drive cartridge, a movable rear delay with two cartridges, a bed-frame, welded from I-iron and power unit drive chain hoist. (C. A. Dobkin, D. M. Nikitin, A. A. Utrobin Maintenance and repair of hydraulic downhole motors, M.: Nedra, 1983, S. 85-89).

The lack of a modular stand is also impossible to perform the operations of screwing and unscrewing the threaded connections of HDM in the layout standoff due to immobility rear delay stand against the frame of the stand in the transverse direction.

The present invention is to enhance the technological capabilities held at the stand of operations for screwing and unscrewing the threaded connections HDM due to the possibility of execution of works by screwing and unscrewing the threaded connections of HDM in the layout of the whipstock.

The solution of this problem is achieved by the fact that in the known stand for screwing and unscrewing the threaded connection of hydraulic downhole motors (HDM), comprising a frame, a power drive installation cartridge with the possibility of accommodation in the last propulsion section HDM, sliding rear delay with the possibility Da rolling back delay, according to the invention the movable rear delay consists of two components: the base and mounted on the base and attached to it from tipping over not less than two grippers delay device, which contains a cartridge with eccentric Cams and mounted on the shaft of the Chuck ring gear, which is connected with placed in the delay device, a pneumatic cylinder, whereby the inhibiting device has the ability to move in the transverse direction relative to the base and limited rotation relative to the surface at an angle equal to the angle of deviation of the motor section relative to the spindle section HDM, delaying device installed sensors torque control.

Inclined directional and horizontal drilling has required the development of HDM in the layout of the whipstock, and steady growth in directional and horizontal drilling has high requirements to the technical condition used for these purposes HDM. Stands for screwing and unscrewing the threaded connections HDM should ensure that their operations with HDM in the layout of the whipstock.

In Fig.1 showing the 1 drive cartridge 2 with eccentric Cams, sliding rear delay 3, frame 4, with installed power unit 5 to drive the movable rear delay 3 supporting the carriage 6 and the remote control 7.

In Fig.2 shows a General view of the movable rear delay 3.

In Fig.3 - section a-a in Fig.2.

Movable rear delay 3 consists of two main assemblies: the base 8 and retarding device 9.

Base 8 is made in the form of welded structure made from sheet material, which is installed on the guide frame 4 and moves along it using the top 10 and bottom 11 rinks. The top plate 12 of the base 8 is made not less than 4, for example four, end-to-end shaped grooves. In the grooves on the fixed bottom to the top plate 12 with bolted connections, support 13, to fit, for example, four support roller 14. Support rollers 14 are composed of axis 15 and fixed thereto set of single-row radial ball bearings 16. Support rollers 14 protrude above the surface of the upper plate 12 of the base 8 is not less than 2-3 mm Support rollers 14 are placed in the base 8 at an angle to the axis of the base, equal to 3. The top plate 12 of the base 8 is also made not less than 4xfor example four, end-to-end shaped grooves for installation through them zakwaterowanie, dressed on the axis.

Check device 9 includes a rack 19, made in the form of welded structure made from sheet material, the cartridge 20 defined therein axis 21, the eccentric Cams 22, mounted on the shaft of the cartridge 20 gear 23, the terminals 24, the pneumatic cylinder 25 and the sensors torque control 26 mounted on the rack 19.

Check device 9 is mounted on support rollers 14, placed at an angle 3to the axis of the base 8, which facilitates the spread of the inhibiting device 9 relative to the base 8. The hooks 17 are installed through the slots in the top plate 12 of the base 8, the inhibiting device (9) and fasten it with the screw. The grippers 17 prevents tipping retarding device 9 torque arising in the process of screwing and unscrewing the threaded connections of HDM. Check device 9 is elevated above the base 8 is not less than 2 mm, Thus retarding device 9 is able to freely rotate relative to the surface of the base 8 and to move across it. The gap is not less than 5-6 mm between the top of the hooks 17 and the upper plate 12 osnovanjeto is limited to the value of grooves in the upper base plate 8, in which you installed the hooks 17, the roller bearings 18 and the gap between the grips 17 and the upper plate 12 of the base 8.

HDM in the layout of the whipstock have the deflection angle of the motor section relative to the spindle section within 3with increments of 15’. Depending on the design of HDM angle can be either constant constant and adjustable changing.

The spindle section of HDM in the layout of the whipstock with the crane beam is slid into the hollow shaft of the cartridge 20 of the movable rear delay 3, push to place the necessary grip threaded connections and stack on divorced eccentric Cams 22. Motor section HDM placed on supporting the trolley 6, adjusted in height. Includes power unit 5 to drive the movable rear delay 3 and push the motor section of HDM in the hollow shaft of the cartridge 2 power plant 1 to place the necessary grip threaded connections, if necessary with the help of a crane supporting the spindle section of the HDM. From the control panel 7 includes power unit 1 drive cartridge 2, conducting preliminary damage to the propulsion section HDM eccentric Cams of the cartridge 2. With remote upravleniia 23, revolving, rotate, three axis 21, respectively, and three eccentric Cam 22, conducting preliminary clamping spindle section HDM. Eccentric Cams 22, having a width of not less than 70 mm and a rectilinear generatrix of the cylindrical surface, under the action of the efforts generated by the drive cylinder 25, strive to take in the axial direction of the direction of rectilinear generatrix of the outer surface of HDM and move and deploy delay device 9 relative to the base 8. In the process of pre-clamping spindle section HDM with a deflection angle of the motor section relative to the spindle section equal to15’, the eccentric Cams 22 of the cartridge 20 of the movable rear delay 3 under the action of the efforts generated by the drive cylinder 25, is moving retarding device 9 relative to the base 8 by the support rollers 14 in the transverse direction and turn it to the angle 115’, equal to the deviation angle of the motor section relative to the spindle section HDM.

Check device 9 of the movable rear delay 3 will move and unfold relative to the base and at any other angles that are equal in the I 7 include the propulsion unit 1 drive cartridge 2 and the process of screwing or unscrewing the threaded connections of HDM.

In the prototype, the delay of the stand is made in the form of a trolley mounted on the guide frame, and rigidly fixed thereto a clamping device with two cartridges, equipped with eccentric Cams, thereby on the stand, it is impossible to perform the operations of screwing and unscrewing the threaded connections of HDM in the layout standoff due to the immobility of the movable rear delay with respect to the guide frame in the transverse direction.

In the present invention the movable rear delay 3 is made of two main units. Base 8 is mounted on the guide frame 4 and moves along it on the top 10 and bottom 11 of the rollers. Check device 9 is mounted on the base 8 at least four support rollers 14, arranged in grooves in the top plate 12 of the base 8 is fixed to the bottom support plate 13. Check device 9 elevated above the base 8 is not less than 2 mm Through the slots in the top plate 12 of the base 8 to the rack 19 retarding device 9 are attached to the hooks 17, which transmit torque arising during make up and break threaded connections HDM, on the basis of 8 rolling back delay and prevent delay device 9 from the ODA is their turn delay device 9 within 3and transverse movement relative to the base 8. When performing operations preliminary clamping sections of HDM in rounds 2 and 20 with eccentric Cams under the action of the efforts generated by the drive cylinder 25, the eccentric Cams 22, having a width of not less than 70 mm and a rectilinear generatrix of the cylindrical surface, strive to take in the axial direction of the direction of rectilinear generatrix of the outer surface of HDM, move and deploy delay device 9 relative to the base 8.

Free movement and rotation retarding device 9 relative to the base 8 of the movable rear delay 3 ensures an exact match of the deflection angle of the motor section relative to the spindle section HDM and axle retention device 9 of the movable rear delay 3 within 3and definitely prevents destruction of the threaded connections of HDM in the layout of the whipstock in the process of Assembly and disassembly.

All of the above greatly enhances technological capabilities to perform work on the stand for screwing and unscrewing the threaded connections of HDM, including provides opportunities is assiniboia threaded connections HDM simple in manufacture and operation, has high maintainability and ease of maintenance, convenient for installation.

Claims

Stand for screwing and unscrewing the threaded connection of hydraulic downhole motors (HDM), comprising a frame, a power drive installation cartridge with the possibility of accommodation in the last propulsion section HDM, sliding rear delay with the ability to accommodate a motor section mounted on the frame supporting the trolley and power unit actuator movable back delay, characterized in that the movable rear delay consists of two components: the base and mounted on the base and attached to it from tipping over not less than two grippers, the inhibiting device that contains a cartridge with eccentric Cams and mounted on the shaft of the Chuck ring gear, associated with is placed in the delay device, a pneumatic cylinder, whereby the inhibiting device has the ability to move in the transverse direction relative to the base and limited rotation relative to the surface at an angle equal to the angle of deviation of the motor section relative to the spindle section G

 

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