RU111875U1 - INSTALLATION FOR DRILLING, TESTING AND REPAIR OF OIL AND GAS WELLS - Google Patents

Abstract

 1. Installation for drilling, testing and repair of oil and gas wells, including a self-propelled vehicle with a drive engine, a frame with installed equipment, including a winch, winch drive transmission, intermediate and transfer gearboxes, telescopic mast with crown block and guy wires, tackle system, hydraulic outriggers, front and rear mast supports, mounting hydraulic system for mast lifting, extension of the mast top section, working hydraulic system for hydraulic splitter drive, pipe wrenches, hydraulic rotor, cardan transmission of the rotor drive with an intermediate support, an automatic brake of the transmission of the rotor drive, a repair site pivotally connected to the rear mast support, a driller’s panel, an emergency engine shutdown system, characterized in that the transfer gearbox is made of two-stage with bevel and cylindrical gears, the last of which two cardan shafts connected to the sprockets of the high-speed and low-speed chain circuits of the winch drive, a limit switch is installed on the rear mast support, in interacting with the lower section of the mast in its raised position and connected with the hydraulic lines of the mounting hydraulic system for lifting the mast. ! 2. Installation according to claim 1, characterized in that the limit switch on the rear mast support is made in the form of a spring-loaded hydraulic valve interacting with an adjustable stop on the lower mast section when it is planted on the rear support. ! 3. Installation according to claim 1, characterized in that the driller console is configured to transform it by turning around a vertical axis from a working position, convenient

Description

The claimed utility model relates to the field of oilfield equipment and, in particular, is an installation for drilling, testing and repairing oil and gas wells.

Known mobile unit for the development and repair of wells A50U, mounted on a chassis and including a telescopic drilling tower, a frame, a winch with a drill and tartar drum in a single housing, a drive (transfer) gearbox, a chain transmission, consisting of three branches, one of which connects the lead an element (asterisk) in the case, rigidly fixed to the frame, with the shaft of the tartar drum, and the other two - tartal drum with a drill (higher or lower speed), pneumatic busbar couplings (for connecting transmission branches). Chain transmissions are closed by removable casings having a longitudinal connector, and the chains are lubricated by drip oilers (see Machine Export catalog “A50U Unit for Development and Repair of Wells.” Vneshtorgizdat 1989, publ. No. 4570M, order No. 2637, p. 7, 17, 19, 29, 30).

Known installation lifting for the development and repair of oil and gas wells (see the description of the invention "Installation lifting for the development and repair of oil and gas wells", protected by patent RU No. 2362867 by application dated September 17, 2007 No. 2007134654.

The installation contains a self-propelled vehicle, a frame with equipment installed on it, including a winch, winch drive transmissions, a transfer gear, a telescopic mast with crown block, a rotor, a transfer gear mounted rigidly in the central part of the frame and contains a spline shaft that receives rotational motion through roller bearings, at one end of which a limit torque coupling is installed, with the possibility of limiting the load capacity of the installation, and the driven shaft of the transfer gearbox is mounted on tapered roller bearings and has at one end a flange for attaching a cardan drive. The winch is equipped with a bed of welded construction made of sheet steel and a channel on which elements of the telescopic mast are installed.

All of the above designs are almost impossible to transform in order to use different types of drives. The specifics of mobile repair and drilling units is as follows:

1. The limitation of the width of the main platform of the base of the transport dimension (2500 ... 2800 mm) and the inability to place power equipment on folding platforms.

2. Various differences in elevations of the elevator block platform and the base block platform under different operating conditions:

- with a small difference, for example, during well overhaul, when they work either without a preventer or with one preventer, it is advisable to use a traditional design rotor with a horizontal drive shaft;

- with a large difference in elevations and the use of a stationary drill key, when there is no place for an intermediate support, it is advisable to use a rotor with a cylindrical main gear and connecting the drive propeller shaft from the platform of the lifting block to the vertical rotor shaft from the bottom or using a hydraulic rotor drive. The use of a hydraulic drive, in addition to simplifying the transmission of the unit, is sometimes due to the need for maneuvering power and speed, as well as operational reversal.

For the prototype of the claimed technical solution, an installation for drilling, testing and repairing oil and gas wells UPA-80 can be adopted (see the description of the invention “Installation for drilling testing and repairing oil and gas wells”, protected by patent RU No. 2362868 by application of 17.10. 2007 No. 2007138680), including a self-propelled vehicle with a drive engine, a frame with equipment installed thereon, including a winch, winch drive transmission, intermediate and transfer gearboxes, telescopic mast with crown block and a guy line and, tackle system, hydraulic outriggers, front and rear mast supports, mounting hydraulic system for lifting the mast, extending the upper mast section, working hydraulic system for hydraulic splitter drive, pipe wrenches, hydraulic rotor, cardan transmission of rotor drive with intermediate support, automatic rotor drive transmission brake, repair platform pivotally connected to the rear mast support, driller console, engine emergency stop system.

The winch of this installation is single-drum with a chain drive, the transfer gearbox is tapered, single-stage, the front support and rear mast support are rigidly mounted on the frame, to which the lower mast section is pivotally connected, and on the upper mast section are two brackets and racks equipped with an evacuation device riding worker, the repair site is pivotally mounted on the rear mast support with the possibility of transformation from the working position to the transport one.

The disadvantage of the installation of the prototype, as well as the previously mentioned, is that the transfer gearbox is single-stage, which requires three chain loops for a two-speed winch, i.e. each speed is provided by a two-stage chain transmission, which complicates the design and increases the size. In addition, the convenience of control during hoisting operations requires the location of the driller console outside with respect to the brake handle. This increases the overall size of the installation. Therefore, a chassis with a standard transport dimension of 2500 mm in width is problematic to use.

Thus, the main technical problem to be solved by the claimed utility model is the elimination of the indicated disadvantages of the prototype and the creation of an installation for drilling, testing and repairing oil and gas wells of a simplified and more reliable design while maintaining functionality that fits into the standard transport envelope and has higher security.

The technical result of the installation for drilling, testing and repair of oil and gas wells is to simplify its design, to increase reliability while maintaining functionality.

To solve this problem, an installation for drilling, testing and repairing oil and gas wells includes a self-propelled vehicle with a drive engine, a frame with installed equipment, including a winch, winch drive transmission, intermediate and transfer gearboxes, telescopic mast with crown block and guy wires, tackle system, hydraulic outriggers, front and rear mast supports, mounting hydraulic system for lifting the mast, extending the upper mast section, working hydraulic system for the hydraulic splitter drive, pipe wrenches, a hydraulic rotor, a cardan transmission of a rotor drive with an intermediate support, an automatic brake of a transmission of a rotor drive, a repair site pivotally connected to the rear mast support, a driller console, an emergency engine shutdown system, while the transfer gearbox is made of a two-stage with bevel and cylindrical gears, the last of which, through two cardan shafts, is connected to the sprockets of the high-speed and low-speed chain circuits of the winch drive, the trailer mounted on the rear mast support th switch, interacting with the lower mast section in its raised position and connected to the hydraulic lines of the mounting hydraulic system for lifting the mast.

Additional differences are as follows.

The limit switch on the rear mast support is made in the form of a spring-loaded hydraulic valve interacting with an adjustable stop on the lower mast section when it is planted on the rear support.

The driller’s console is capable of transforming it by turning around a vertical axis from a working position, convenient for control, into a transport one.

In the mast guy between the screw tie and the guy rope, tension indicators are built-in, consisting of two telescopic elements separated by a spring, moreover, annular control risks are made on the inner element, each of which corresponds to a certain tension force.

In the emergency engine shutdown system, a sealed air damper is mounted on a vertical axis in the side pocket of the air pipe, the drive element of the valve is located outside the air pipe and is pivotally connected to the axis eccentric.

The automatic rotor drive transmission brake is made in the form of a pneumatic clutch having a fixed element rigidly fixed to the installation frame, a rotating element is rigidly fixed to the intermediate support shaft, moreover, the brake enable valve is interlocked with the rotor drive enable valve.

Technical features of the inventive installation can be implemented using tools used in general engineering (the implementation of the transfer gear, the use of pneumatic couplings, hydraulic cylinders, etc.).

The essential features reflected in the utility model formula are necessary and sufficient for its implementation and the solution of the problem posed above.

The design of the installation for drilling, testing and repairing oil and gas wells is new and industrially applicable.

The utility model is illustrated by an example of its implementation, shown in the accompanying drawings (figure 1 - figure 10), which shows the following elements.

Figure 1 - General view of the installation in transport position.

Figure 2 - General view of the installation in the working (deployed) position.

Figure 3 - placement on the rear support of the mast limit switch.

Figure 4 - an example of the implementation of the limit switch in the hydraulic system for lifting the mast.

5 is a transformable console driller in the working position.

6 is a transformable driller console in transport position.

7 is an indicator of the tension of guy wires.

Fig. 8 is a sealed air damper of an emergency stop system of a drive motor.

Figure 9 - brake cardan transmission of the rotor drive.

Figure 10 - hydraulic circuit switch limit switch in the hydraulic system for lifting the mast.

Figure 1, 2 shows a General view of the installation, respectively, in the transport position and in the working (deployed) position, including a self-propelled vehicle 1 with a drive motor 2, frame 3, winch 4, transmission winch drive 5, intermediate gear 6, transfer gear 7 , hydraulic outriggers 8, the front mast support 9, the rear mast support 10, the hydraulic system 11, the hydraulic system 12, the cardan transmission 13 of the rotor drive, the intermediate support 14 of the rotor drive, the repair site 15, the tackle block 16, the driller console 17, power offs ki mast 18 and the backstay 19 wind, which are embedded in the turnbuckles 20 and 21, tension indicators braces. Repair site 15 is shown in figure 2 in a horizontal (working) position.

Figure 3 shows the placement of the limit switch 22 in the hydraulic system mounting 11 for lifting the mast. At the end of the lift, before touching the stop 23 of the cushion 24, the sensor is exposed to an adjustable stop 25 mounted on the lower mast section 26.

One of the options for the limit switch 22 (figure 4) is a hydraulic valve. It consists of a housing 27 attached to the rear mast support 10, a pusher 28, spring-loaded 29 and provided with a cam 30 acting on the lever roller 31. The latter interacts with the valve spool 32 of the valve 33 with a conical sealing element 34 pressed by the spring 35 to the housing seat 36 37 of a valve having an inlet 38 and an outlet 39.

Figure 5 shows the console of the driller 40 in the working position, located outside the frame 3. The panel is mounted on a L-shaped rack, pivotally connected to the frame 3 by means of the vertical axis 42.

Figure 6 shows the console of the driller 40 in the transport position within the dimensions of the frame 3. The presence of the transformable console of the driller allows you to fit the installation into the standard dimensions of the chassis while providing ease of management.

Figure 7 shows the indicator of tension 21 power and wind guy ropes. It consists of an outer telescopic element 43 connected by eyes 44 with screw ties 20 (FIG. 2), and an inner element 45 pressed by a set of Belleville springs 46. On the inner element there is a series of ring notches 47. The inner telescopic element 45 is connected to the thimble of the guy line (not shown). Each risk corresponds to a specific pulling force of the guy rope.

On Fig shows a sealed air damper emergency stop system of the drive engine, consisting of a first pipe 48 of the air supply system to the engine with a flange 49, a second pipe 50 with a flange 51, an elastic gasket 52 between the flanges, a side pocket 53 in the first pipe, in which a lever 55 is pivotally mounted on the vertical axis 54, pivotally connected to the air damper 56. The axis ends with an eccentric 57, to which, through link 58, a retractor magnet 59 is connected to a return spring 60 mounted outside the first pipe 48. and at full magnet travel, the shutter 56 rotates 90 °.

Figure 9 shows the brake 61 of the cardan transmission 13 of the rotor drive mounted on the input shaft 62, the intermediate support 63. On the output shaft 64 mounted pneumatic tire coupling 65 to enable the rotor drive. The brake 61 consists of a pneumatic tire clutch 66, rigidly mounted on the frame 3 by means of an arm 67. The drum 68 of the clutch 66 is rigidly connected to the cardan flange 69, mounted on the input shaft 62.

Figure 10 shows the principal hydraulic circuit of turning on the limit switch 22 in the mounting hydraulic system 11. Hydraulic fluid is supplied into the piston cavity 70 of the mast lifting cylinder through a throttle with a check valve 71 from a three-way distributor 72. A pump 73 is connected to the distributor inlet, whose suction line is connected to the tank 74 through a suction filter 75. A drain line 76 of the distributor 72 is connected to the tank 74 through a filter 77. With the line 78 connecting the distributor 72 to the cavity 70, the input of the limit switch 22 is connected, made nnogo in the form of two-way normally closed valve. The output of the valve through the throttle 79 is connected to the drain line 76.

The installation is as follows. Before installation at the well, the car is oriented relative to the well in the axial and transverse directions, is lifted on the outriggers and set according to a roll gauge. Then the hinged platforms and the repair site are transferred to the working position, the driller’s console is rotated 90 ° and fixed in the working position. The mast is lifted from a remote control. After the mast moves vertically, the pressure in the piston cavity 70 of the mounting 11 hydraulic system decreases to the drain pressure, since at this moment the stop 25 presses on the pusher 28 and the valve 33 opens, providing the cavity 70 with the drain line through the throttle 79. Therefore, the pressure jump after landing stops 23 on the pillows 24 does not occur, which prevents overloading of the rear mast support and its struts at the end of the mast lifting. The pressure in the cavity 70 when the pump is running becomes equal to the differential pressure on the throttle. When preparing the mast to lower this pressure, it is enough to remove air from the cavity 70 during the purge of the cylinder.

After lifting the mast, the upper section is extended using a hydraulic winch. Then, power brackets, mounted on the installation frame, and wind brackets, mounted on anchors, are installed. Since a tension indicator 21 is built into each guy, it is possible to carry out tension with direct control of the force, and not indirectly through a moment on a screw tie. So, when tensioning power guy wires and front windscreens (from the side of the chassis cab), the force should be half as much as when tensioning the rear windshields, which corresponds to the exit of the end of the outer telescopic element 43 of the corresponding risk in accordance with the calibration. This provides protection against overload of the mast metal structure, which is possible both with insufficient and with excessive tension.

For emergency engine shutdown, an electric signal is supplied from the driller’s remote control or from the remote control, which activates the retractor magnet 59, the rod of which through link 58 rotates axis 54 through 90 through eccentric 57. At the same time, the lever 55 is rotated with a shutter 56, which is pressed against the gasket 52. An additional pressing is carried out by a stream of air. When the magnet 59 is turned off, the shutter 56 is retracted into the pocket 53 by the action of the return spring 60. Thus, when the engine is running, there are no elements in the air pipe that increase the resistance to air flow.

The brake 61 of the cardan transmission 13 of the rotor drive in the form of a pneumatic tire clutch is engaged simultaneously with the disconnection of the clutch 65, fixing the rotating parts of the transmission. The brake is necessary to prevent reverse rotation of the transmission under the influence of the so-called "spring" of the drill string that occurs when a large torque during drilling.

Thus, the task to simplify the design of the installation for drilling, testing and repair of oil and gas wells while maintaining its functionality is fully implemented in the claimed utility model. Compared with the prototype, the installation has a simpler and more reliable design while maintaining the standard transport dimension (one chain circuit located outside the winch body is excluded), as well as a higher level of safety due to the prevention of overloading the mast steel structures and ensuring reliable emergency engine shutdown.

Claims (6)

1. Installation for drilling, testing and repair of oil and gas wells, including a self-propelled vehicle with a drive engine, a frame with installed equipment, including a winch, winch drive transmission, intermediate and transfer gearboxes, telescopic mast with crown block and guy wires, tackle system, hydraulic outriggers, front and rear mast supports, mounting hydraulic system for mast lifting, extension of the mast top section, working hydraulic system for hydraulic splitter drive, pipe wrenches, hydraulic rotor, cardan transmission of the rotor drive with an intermediate support, an automatic brake of the transmission of the rotor drive, a repair site pivotally connected to the rear mast support, a driller’s panel, an emergency engine shutdown system, characterized in that the transfer gearbox is made of two-stage with bevel and cylindrical gears, the last of which two cardan shafts connected to the sprockets of the high-speed and low-speed chain circuits of the winch drive, a limit switch is installed on the rear mast support, in interacting with the lower section of the mast in its raised position and connected with the hydraulic lines of the mounting hydraulic system for lifting the mast. 2. Installation according to claim 1, characterized in that the limit switch on the rear mast support is made in the form of a spring-loaded hydraulic valve interacting with an adjustable stop on the lower mast section when it is planted on the rear support. 3. Installation according to claim 1, characterized in that the driller’s console is capable of transforming it by turning around a vertical axis from a working position convenient for control into a transport one. 4. Installation according to claim 1, characterized in that tension indicators are built in the mast guy between the screw tie and the guy rope, consisting of two telescopic elements separated by a spring, and on the inner element there are ring control risks, each of which corresponds to a certain tension force . 5. Installation according to claim 1, characterized in that in the emergency engine shutdown system a sealed air damper is mounted on a vertical axis in the side pocket of the air pipe, the drive element of the valve is located outside the air pipe and is pivotally connected to the axis eccentric. 6. Installation according to claim 1, characterized in that the automatic brake of the rotor drive transmission is made in the form of a pneumatic clutch having a fixed element rigidly fixed to the installation frame, a rotating element is rigidly fixed to the intermediate support shaft, and the brake brake valve is interlocked with the brake valve rotor drive.