RU162486U1 - MOBILE DRILLING AND DRILLING UNIT - Google Patents

Abstract

A mobile repair and drilling unit, including a lifting unit on a self-propelled chassis frame, containing a drive motor, a transfer gearbox connected to the engine gearbox, an angular gearbox, a winch with chain traction gears, a hydraulic brake, a belt brake equipped with a lever transmission of the brake drive, and operational disk pneumatic with couplings for connecting the transmission to the winch drum and with a water cooling system, a telescopic drilling tower with a crown block and a riding worker’s balcony, tackle a system with a hook block, a telescopic hydraulic cylinder for lifting the tower, a hydraulic cylinder for extending the upper section of the tower, cardan transmissions of the winch and rotor drive, a reversing gear of the rotor drive, a drill base equipped with a candlestick, a drill key and a rotor with a mechanical drive, a hydraulic system with pumps and a control panel, a hydraulic outrigger emergency hydraulic drive, connected hydraulically to the emergency electric drive hydraulic power station, while the transfer gearbox contains shafts and gears of the winch, rotor drive, hydraulic pump in a removable housing, the emergency hydraulic drive hydraulic motor is integrated in the transfer gearbox, the winch drive shaft is made through, connecting the drive motor to the winch through an angular gearbox, the hydraulic brake chain transmission of which is connected to the drum via a gear clutch on the drum shaft, which is not operative with a manual drive, and an operative disk pneumatic clutch on the shaft of the hydraulic brake, the rotor torque meter is integrated into the cardan drive connecting the transfer and reverse gears, characterized in that it is mechanically reducible

Description

The utility model relates to the field of deep drilling and, in particular, is a mobile unit for overhaul and rotary drilling of oil and gas wells.

A well-known design of a mobile repair and drilling unit, including two mobile units: a hoist block with a transport base, a drive motor, a winch, a transmission and a telescopic drill tower, and a drilling base block, the platform of which is higher than the platform of the hoist block. The design also includes a rotor having a single-stage bevel gear with ball bearings located below the large gear rigidly connected to the rotor table, as well as a horizontal drive shaft, a chain transmission connecting the transmission on the platform of the elevator block with an intermediate support on the platform of the drilling base block, and a cardan shaft connecting the specified intermediate support with the drive shaft of the rotor (see, for example, the book of R. A. Bagramov “Drilling machines and complexes”, M .: “Nedra”, 1988, p. 102-103).

The disadvantage of this design is that it requires an additional intermediate support for the rotor drive, which occupies the only possible place for installing a stationary drill key, since the installation of the key to the side of the rotor imposes a restriction on the transport dimension along the width of the base. In addition, the rotor itself with a tapered final drive and the required bore diameter has significant dimensions in width and height and a significant mass.

A unit with a hydraulic rotor is also known (see, for example, the book “Catalog of parts of a unit for developing and repairing wells,” Vneshtorgizdat, publ. No. 4570M, p. 40).

The rotor of the unit has a two-stage cylindrical gear from the hydraulic motor to the rotor table mounted on a double angular contact roller bearing located between the table and the main gear. A wedge grip (spider) is mounted in the through hole of the table.

The main disadvantage of this design is the inability to make a through hole of the required size due to the placement of the bearing between the table and

main gear. In addition, the presence of one bearing with a very small axial base does not provide a sufficient resource, which is proved by the practice of using such rotors.

In addition, all of the above designs are almost impossible to transform with the aim of using various types of drives. The specifics of mobile repair and drilling units is as follows:

1. Limiting the width of the main platform of the base of the transport dimension and the inability to place power equipment on the folding platforms.

2. Various differences in elevations of the platform of the elevator block and the platform of the drilling base block 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.

A well-known universal design of a repair and drilling unit that meets the above conditions, including the conditions of minimum dimensions in width and height, minimum weight with a sufficiently large diameter of the bore of the rotor, which provides the use of a built-in wedge grip for working with drill and casing pipes, designed for the most complex well designs within the capacity of the unit (see the description of the invention "Mobile repair and drilling unit", protected by patent RU No. 2260105 for application No. 2004107112 about 11.03.2004).

The specified technical solution characterizes a mobile repair and drilling unit with a multi-drive small-sized rotor, the design of which allows the rotor to be driven both with a horizontal drive shaft and by supplying power from below without an intermediate support.

A mobile repair and drilling unit includes a transport base with a drilling tower, a winch and a transmission of a drawworks and rotor drive located on it, a rotor with a built-in wedge grip, located on a separate drilling base (driller's working platform), including a rotor table and a main gear, rigidly fixed on it. The main gear of the rotor is cylindrical and placed between two angular contact bearings inside the rotor table case, equipped with a removable and removable drive attachment, located in a separate case, rigidly fastened to the rotor table case and including a cylindrical satellite and a drive gear worn on the drive shaft. The output end of the drive shaft is brought out through the lower part of the housing of the specified drive attachment for docking with the transmission of the rotor drive.

The disadvantage of this arrangement of the mechanisms and components of the mobile drilling unit is the placement of the rotor on the upper surface of the drilling base (the working platform of the driller). This reduces the safety conditions of the driller due to the clutter of the driller’s working platform and complicates the design of the mobile repair and drilling unit both during operation and during transportation.

A mobile repair and drilling unit is also known (see the description of the utility model "Mobile repair and drilling unit", protected by patent RU No. 40372 for application No. 2004112351 of 04/26/2004), including a lifting unit on a frame of a self-propelled chassis, containing a drive motor, a transfer gearbox associated with the gearbox of the engine, an angular gearbox, a winch with chain transmissions, a hydraulic brake, a belt brake equipped with a lever transmission of the brake drive, operational pneumatic disk couplings for connecting the transmission and with a winch drum and with a water cooling system, a telescopic drilling tower with crown block, strips and guy lines, a tackle system with a hook block, a telescopic tower lifting cylinder, a tower extension cylinder upper drive shaft, cardan transmissions of the winch and rotor drive, a reversible rotor drive gearbox, a mobile unit drill base, equipped with a candlestick, a drill key and a rotor with mechanical and hydraulic drives, a hydraulic system with pumps and a control panel, hydraulic outriggers, emergency hydraulic e, hydraulically connected to the emergency electric drive hydroelectric station.

The disadvantage of this mobile drilling unit is the complicated design of the transmission of the winch and the rotor of the unit. This complicates the design of the mobile

of the drilling and drilling unit both during operation and during transportation, reduces the working safety conditions due to cluttering the work sites of maintenance personnel.

The closest technical solution to the prototype is a mobile repair-mobile unit protected by patent RU No. 111876 for application No. 2011129372/03 of July 15, 2011, which partially eliminates these shortcomings.

A mobile repair and drilling unit includes a lifting unit on a self-propelled chassis frame containing a drive motor, a transfer gearbox associated with an engine gearbox, an angular gearbox, a winch with chain transmissions, a hydraulic brake, a belt brake equipped with a lever transmission of the brake drive, and operative pneumatic disk couplings for connecting a transmission with a winch drum and with a water cooling system, a telescopic drilling tower with a crown block, a horse of a riding worker and guy wires , hoist system with a hook block, telescopic hydraulic cylinder for lifting the tower, hydraulic cylinder for extending the upper section of the tower, cardan transmissions of the winch and rotor drive, a reversing gear of the rotor drive, - a drilling base unit equipped with a candlestick, a drill key and a rotor with a mechanical drive, a hydraulic system with pumps and a remote control controls, hydraulic outriggers, emergency hydraulic drive, hydraulically connected to the emergency electric drive hydraulic station, while the transfer gearbox contains shafts and gears of the winch drive, mouth of hydraulic pumps in a removable housing, the emergency hydraulic drive hydraulic motor is integrated in the transfer gearbox, the winch drive shaft is made through, connecting the drive motor to the winch through an angular gearbox, the hydraulic brake chain transmission of which is connected to the drum through a gear clutch on the drum shaft, which is not operative with a manual drive, and an operational pneumatic disk clutch on the shaft of the hydraulic brake, the rotor torque meter is built into the cardan gear connecting the transfer and reversing gears.

The disadvantage of the prototype can be considered a long time of installation / dismantling of the drilling unit, due to the need for Assembly / disassembly of the chain gears of the rotor drive.

In connection with the above, the main technical problem, the solution of which is claimed by the claimed utility model, is to eliminate the disadvantage of the prototype and the creation of a mobile repair and drilling unit, the design of which provides

reduction in time of the installation / dismantling of the drilling unit.

To achieve the specified technical result, the mobile repair and drilling unit includes a lifting unit on a self-propelled chassis frame containing a drive motor, a transfer gearbox connected to the engine gearbox, an angular gearbox, a winch with chain transmissions, a hydraulic brake, a belt brake equipped with a drive lever transmission brakes, operational pneumatic disk couplings for connecting the transmission to the winch drum and with a water cooling system, a telescopic drilling tower with crown block and a riding worker’s balcony, a hoist system with a hook block, a telescopic hydraulic cylinder for lifting the tower, a hydraulic cylinder for extending the upper section of the tower, cardan transmissions of the winch and rotor drive, a reversing gear of the rotor drive, a drilling base equipped with a candlestick, a drill key and a rotor with a mechanical drive, a hydraulic system with pumps and a control panel, hydraulic outriggers, an emergency hydraulic actuator connected hydraulically to an emergency electric drive hydraulic plant, while the transfer gearbox contains the gears and gears of the winch, rotor drive, hydraulic pumps located in a removable housing, the emergency hydraulic drive motor is integrated in the transfer gear, the winch drive shaft is made through, connecting the drive motor to the winch through an angular gear, the hydraulic brake chain transmission of which is connected to the drum through an inoperative with a manual drive a gear clutch on the drum shaft and an operational pneumatic disc clutch on the shaft of the hydraulic brake, the rotor torque meter is integrated into the cardan gear connecting the transfer and reverse an explicit gearboxes, mechanical rotor mechanical actuator is in the form of two chain transmissions separated, one of which is located on the frame of the lifting unit, and the other set on the basis of the drilling, between separate transmissions installed driveshaft, drill folding base formed telescopically.

The technical features of the inventive mobile repair and drilling unit can be implemented using tools used in general engineering (the implementation of the transfer gear, the use of emergency hydraulic drive, the use of disk pneumatic-membrane couplings, hydraulic cylinders, etc.).

The essential features reflected in the formula of the utility model are necessary and sufficient for its implementation and the solution of the technical task. The design of the mobile drill rig is new and industrially applicable.

The utility model is illustrated by an example of its implementation, schematically shown in the accompanying drawings (Fig. 1 - Fig. 3), which show the following elements.

FIG. 1 - a general view of the unit in working position.

FIG. 2 is a kinematic diagram of a mobile repair and drilling unit.

FIG. 3 - chain drive rotor.

In FIG. 1 shows a mobile repair and drilling unit in operating position, including a lifting unit on a self-propelled chassis frame 1, comprising a power drive, a transfer gear 2, an angular gear 3, a winch drive transmission, a winch 4 with a brake system and a hydraulic brake, a telescopic drilling tower 5 with a crown block 6, a riding worker’s balcony 7, a hoist system with a hook block 8, a drill base 9 with a candlestick, a ramp 10 and a receiving bridge 11 for storing drill pipes.

In FIG. 2 shows the kinematic diagram of a mobile repair and drilling unit. The winch, rotor and hydraulic pumps were driven by a cardan shaft 12 from the transfer case of the self-propelled chassis to the transfer gear 2. The cardan shaft 13 transfers the rotation to the angular gear 3, then through the cardan shafts 14 and 15 and the chain drives to the shaft 16 of the drill winch through pneumatic disk couplings 17 and 18 to ensure the operation of the tackle system of the unit. The hydraulic brake 19 serves to slow down the descent of pipes into the well. The rotor torque meter 21 is integrated into the cardan drive 20 connecting the transfer case 2 and the reverse gear 22. Cardan drive 20 is used to transfer rotation from the transfer (intermediate) gear 2 to the reverse gear 22, then to the lower chain gear 23 and the upper chain gear 24 and to the drill rotor 25. The transfer gear 2 further distributes the rotation gear from the power drive to the hydraulic pumps 26 and 27 and has a built-in (integrated) high-torque gerotor hydraulic motor, operating from an emergency electric drive hydroelectric station.

In FIG. 3 shows a mechanical rotor drive that includes a reverse gear 22 for changing the direction of rotation of the rotor. The lower chain gear 23 is mounted on the frame of the lifting unit and is connected by a universal joint

28 with the upper chain gear 24 attached to the block of the drilling base 9 and transmitting rotation to the drilling rotor 25.

Installation of a mobile repair and drilling unit is as follows. Installation of the unit begins with the installation on the ramp 10 at the point of repair or drilling of the well. When deployed for drilling, the self-propelled chassis 1 is lifted by outriggers until the wheels are completely separated from the ramp. After horizontal alignment, the unit is fixed. By means of the hydraulic cylinder, the telescopic tower 5 rises and is fastened with folding bolts (not shown) to the rear support. Then the guy ropes are tensioned with a force control by the tension indicators (not shown) built into each guy. Installation operations (installation of outriggers, lifting the tower and extending its upper section) are carried out hydraulically from the pump 26.

Next, carry out the deployment and installation of the drilling base.

To carry out lifting operations when repairing wells or drilling, a drive motor is switched on, from which through the driveshaft 12 (cardan transmission) rotation is transmitted to the feed shaft of the transfer gearbox 2 and then through the driveshaft 13 to the angle gearbox 3, through the driveshafts 14 and 15 and chain drives to winch shaft 16. From the transfer (intermediate) gearbox 2, the driveshaft 20, rotation is transmitted to the reversing gearbox 22, then to the lower chain gear 23, the driveshaft 28, the upper chain gear 24 and to the drill rotor 25. This design of the rotor mechanical drive in the form of two chain separated transmissions 23, 24, one of which is located on the frame of the lifting block, the other is mounted on a telescopically folding drilling base 9, and a cardan shaft 28 is installed between the separated chain transmissions, which allows installation at the drill base relative to the lifting unit on unprepared surfaces with differences in height by adjusting the height of the base of the drill and to transmit the rotation of the rotor in the absence of alignment between the chain gears.

The main advantage is that the installation / dismantling time of the mechanical rotor drive is significantly reduced, since assembly / disassembly of the chain gears is not required with alignment between the chain gears. It is only necessary to install or remove the driveshaft 28.

The technical solution described is implemented in a mobile drilling complex with a lifting capacity of 200 tons.

Thus, the described construction of the repair and drilling unit significantly reduces the time required for mounting / dismounting the drilling unit.

Claims (1)

A mobile repair and drilling unit, including a lifting unit on a self-propelled chassis frame, containing a drive motor, a transfer gearbox connected to the engine gearbox, an angular gearbox, a winch with chain traction gears, a hydraulic brake, a belt brake equipped with a lever transmission of the brake drive, and operational disk pneumatic with couplings for connecting the transmission to the winch drum and with a water cooling system, a telescopic drilling tower with a crown block and a riding worker’s balcony, tackle a system with a hook block, a telescopic hydraulic cylinder for lifting the tower, a hydraulic cylinder for extending the upper section of the tower, cardan transmissions of the winch and rotor drive, a reversing gear of the rotor drive, a drill base equipped with a candlestick, a drill key and a rotor with a mechanical drive, a hydraulic system with pumps and a control panel, a hydraulic outrigger emergency hydraulic drive, connected hydraulically to the emergency electric drive hydraulic power station, while the transfer gearbox contains shafts and gears of the winch, rotor drive, hydraulic pump in a removable housing, the emergency hydraulic drive hydraulic motor is integrated in the transfer gearbox, the winch drive shaft is made through, connecting the drive motor to the winch through an angular gearbox, the hydraulic brake chain transmission of which is connected to the drum via a gear clutch on the drum shaft, which is not operative with a manual drive, and an operative disk pneumatic clutch on the shaft of the hydraulic brake, the rotor torque meter is integrated into the cardan drive connecting the transfer and reverse gears, characterized in that it is mechanically rotor drive is in the form of two chain transmissions separated, one of which is located on the frame of the lifting unit, and the other set on the basis of the drilling, is set between the divided transmissions driveshaft, drill folding base formed telescopically.

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