Device for screwing and unscrewing the rods at round-trip operations
The invention relates to the field of oil production, namely the means of mechanization tripping associated with pumping rods. The device comprises a rotation drive rod in the form of a mechanical key with the planet carrier, rod key, controloc, rack mount it to osteoma equipment and the rod grip. There is a torque limiter screwing the rods. Rod grip has an open longitudinal groove in the pump rod, planting belts, the inner of which is made in accordance with the shape of the seats on the rod head and outside - in accordance with the form of the similar space on the rack. Form seats at the rod head conforms to the shape of the landing at the head of the pump rod. At the rod capture under the pump rod is made open transverse groove, rolling in the open longitudinal grooves formed in the rotation rod capture relatively located in the transverse groove of the pump rod in the plane of the last rotating pairs to match the axes of its components. Hinged folding controloc installed on the rack can be locked and the subsequent restricted rotation around the hole, performed at the driver level action arm rod key. Internal, in relation to the cage, the end of the horizontal shaft provided with a hook under the handle rod key, and the outer - radial arm. At the end of the radial arm has at least one spring-ball hosts a safety ball coupling, having the opportunity to interact with located on the driver Cam and return to its original position. The area of the handle rod key feature guides fixed on the drive rod. Ensured a high level of mechanization of labor and the quality of work performed in round-trip transactions with pump rods. 5 Il.
The invention relates to the field of oil production, namely the means of mechanization tripping associated with pumping rods.
The closest analogue is the mechanism for screwing and unscrewing of the rod.with. 810933, Bulletin No. 9, 1981), including the drive rotation of the rod in the form of a mechanical key with the planet carrier, rod key, controloc, rack mount it to osteoma equipment and rod grip with an open form seats at the rod head, and outside - in accordance with the form of the similar space on the rack. On the outer surface of the rod grip is made projections coinciding with the slots provided in the rack at their dock.
Rod capture this mechanism is made so that it engages with the pump rod for its square, at a time when "handling with rods during operation" forbid to do it (sucker rods and couplings, GOST 13877-80, page 24, p. 5, Appendix 4). Geared for the square rod rod capture simultaneously serves as controluce due to the projections on the rod grip and grooves at the front, thus forming a lock. This multifunctional performance rod capture leads to complication of the structure, increasing its mass despite the fact that the rod grip in the process is transferred manually. This fact has a negative effect on productivity.
Used rod key whose handle is equipped with a removable lever, designed for a specific torque, does not correspond to rational technology, because each time, for example, the descent of the sucker rods need to have as much boom keys as sucker rod connections. This means that mA.
The technical challenge is to increase productivity, quality of work performed.
For the task of planting the belt on the rod grip is made in accordance with the form of landing on the head of the pump rod, the rod capture under the pump rod is made open transverse groove, rolling in the open longitudinal grooves formed in the rotation rod capture relatively located in the transverse groove of the pump rod in the plane of the last rotating pairs to match the axes of its components, hinged hinged controloc mounted on the rack can be locked and the subsequent restricted rotation around the stand, torque limiter screwing the rods containing the horizontal shaft, located in the hole were taken at the level of action of the handle rod key, internal to the cage end of the horizontal shaft provided with a hook under the handle rod key, and the outer - radial lever fitted on the end of at least one of the spring-ball hosts a safety ball coupling with the opportunity to interact with located on the driver Cam and return to the to the driver.
In Fig.1 shows a front view of the device of Fig.2 is a view along arrow a in Fig.1; Fig.3 is a section along the line b-B in Fig.1; Fig.4 is a view along arrow b of Fig.1; Fig.5 - leader I in Fig.4.
The device includes a rotation drive (not shown) rod 1 (Fig.1, 4) in the form of a mechanical key 2 with the planet carrier 3, rod 4 key, controloc 5, the rack 6 to mount it to osteoma equipment 7, the rod grip 8 with open longitudinal grooves 9, 10 under the pump rod 1. Rod grip 8 has a boarding bands: inner belt 11 for the planting of the rod head and the outer band 12 to the corresponding inner belt 6 hours.
Boarding belt 11 on the rod grip 8, as sucker-rod Elevator, made in accordance with the form of landing on the head of the pump rod 1. On the rod grip 8 is made open transverse groove 13 for pump rod 1. The depth of the transverse groove 13 such that the axis lying in it pump rod and the axis of the rod capture are in the same plane, and the longitudinal grooves 9, 10 are formed as the result of an imaginary rotation of the rod in the specified plane to match the axes of the components of this turning pair (rod 1 and rod gripper 8). In the described sequence spans the I from it in the process tripping. Hinged folding controloc 5 (Fig.1, 4) has a U shape. His regiment is equipped with open maw under the square rod 14, the side components are installed on the hinge 15 (Fig.4) provided on the rotatable relative to the rack 6 platform 16. Lateral components of controluce with a spring retainers 17 (Fig.5) holding controloc charged in a vertical position. Between the turntable 16 and the rack 6 is adjusting ring 18, with a spring latch 19 with a handle 20 (Fig.3). At the level of the spring retainer 19 in rack 6 are located along its circumference holes 21 under this latch. Around fixed on the rack 6 mounting ring 18 rotatable platform 16 along with controluce 5 has limited rotation within the Central anglethanks provided in the rotatable platform 16 groove 22, which allows to combine Zev of controluce 5 square rod 14 located in the rod grip 8. The body of the latch 23 limits the rotation of the platform 16 around 6 hours within angle.
Torque limiter screwing the rod contains a horizontal shaft 24, raspologaet horizontal shaft 24 provided with a hook 25, made in the form of a roller in contact with the handle rod key 4 from the bottom. Top lever rod key is limited to the guide 26 provided on the drive rod 3.
At the entrance of the handle rod key 4 (Fig.1) in the zone of engagement also has a guide (not shown) mounted on a drive rod 3. The outer end of the horizontal shaft 24 is provided with radial lever 27, is fitted on the end of at least one of the spring-hinge units 28 safety ball coupling (Reference couplings, C. S. Polyakov, I. D. Barbash, O. A. Ryakhovsky, Leningrad: Mashinostroenie, Leningrad branch, 1979, pages 255-261) interoperable with located on the drive rod 3 by the Cam 29. Spring-ball site 28 consists of a spring 30 with the supporting washers 31, 32 at the ends and an adjusting bolt 33 with a nut 34, the ball 35. The ball 35 is in contact with the Cam 29, designed as a plug rotatable sleeve with a work profile is a smooth transition that allows to increase service life of the Cam due to the permutation of its angular position by means of set screws 36 and reduction of dynamic loads upon actuation of the torque limiter. The Cam 29 is located in the housing 37 (Fig.1, 2) provided on Dalny the lever 27 is connected with the return mechanism 38 to its original position, mounted on the opposite horizontal shaft 24 side. The return mechanism 39 is a spring-loaded shock absorber in the compression spring 40, the housing and the piston rod of which is pivotally mounted respectively on the drive rod 3 and the upper end of the radial arm 27.
The device operates as follows.
Have run a string of sucker rods in the well. For this purpose it is necessary to make preparations. Using the adjusting bolt 33 spring-ball Assembly is mounted on the settlement level. Hour 6 Assembly controluce wrapped in a pedestal wellhead valve via a coupling tubing 41. By means of the latch 19 (Fig.3) set the position of controluce 5 (Fig.4) according to the working area staff, which provides convenience in operation.
On the pump rod lying on the jetty, worn rod capture: first, by a transverse groove, and then rotate it relative to the pump rod in the plane of the longitudinal grooves 9, 10 (Fig.1) until the merger of the axes of the rod and the rod grip. Pipe Elevator on the hook of a hoist (not shown) is put on the rod grip, and the pump rod is connected to the wellhead and descends to the landing rod grip 8 on p is regular pump rod, lying on the jetty. Another rod is brought to the mouth and threaded end goes into the coupler previous post. Controloc 5 is charged on a square rod 14.
On the square of the pump rod 1 is put on the rod key 4. The end of the handle rod key 4 along the guide rails 26 is introduced into contact with the hook 25. Torque rod connection is transmitted through rod key 4 and the hook 25 on the other end of the horizontal shaft 24, where through the radial arm 27 - spring-ball-node 28 in contact with the Cam 29. To achieve the estimated value of the torque rod connecting the spring-ball-node 28 is triggered and turned on the cornertakes the position 42. At the same time and the return mechanism occupies the position corresponding to the rotation angleand at this point, the handle rod key 4 out of contact with the hook 25. The return mechanism 39 returns the radial arm 27 with spring-ball node 28 to its original position, after which the ball 35 occupies its position in the Cam 29.
Meanwhile, the mechanical key 2 is turned off, the rod key 4 is removed from the rod 1, controloc 5 automatically leans from Quadra the rod with controluce 5. Rod gripper 8 is removed from the rack 6 and removed from the pump rod 1. Column rod with rod grip in the Elevator is loaded to the rack 6. The Elevator is removed from the rod grip, and then the process repeats.
At the end of the run a string of sucker rods hour 6 turns away from the clutch 41, which is screwed wellhead stuffing box (not shown).
When the lifting rod is no need to limit torque and therefore applies rod key, normal, neuroretinal, handle, designed to work with planet carrier 3 directly. Since the nodes of the proposed device fit into the contour of the carrier (Fig.2), there is reason to believe that it does not interfere with the tubing by means of a mechanical key with the common planet carrier continues to be on the driver ready to work with weights.
The device allows to provide a high level of mechanization of labor and the quality of work performed in round-trip transactions with pump rods.
Device for screwing and unscrewing the rods at round-trip operations, including p its attachment to osteoma equipment and rod grip with an open longitudinal groove in the pump rod, seat belts, the inner of which is made in accordance with the shape of the seats on the rod head and outside - in accordance with the form of the similar space on the rack, characterized in that it is provided with a torque limiter screwing the rods, landing the band on the boom grip made in accordance with the form of landing on the head of the pump rod, the rod capture under the pump rod is made open transverse groove, rolling in the open longitudinal grooves, resultant rotation of the rod capture relatively located in the transverse groove of the pump rod in the plane of the last rotating pairs to match the axes of its components, controloc made a hinged flap mounted on the rack can be locked and the subsequent restricted rotation around the stand, torque limiter screwing the rod contains a horizontal shaft located in the slot in the driver-level steps of the handle rod key, internal to the cage end of the horizontal shaft provided with a hook under the handle rod key, and the outer - radial arm, fitted on the end on the Carniola is located on the driver Cam and return to its original position, the zone of action of the handle rod key feature guides fixed on the driver.
FIELD: drilling oil and gas wells; devices for screwing and unscrewing casing pipes.
SUBSTANCE: proposed wrench includes power unit in form of electric motor, hydraulic pump with constant power regulator and tank filled with working medium. Actuating mechanism includes hydraulic motor, gearbox, rotor with pipe grip, movable doors with locks and hydraulic distributor. Constant power regulator is provided with delay unit in form of prestressed spring. Axial-flow piston-type pump is used as hydraulic pump; it is provided with movable unit with spring and its pistons are arranged in inclined position. Constant power regulator inlet is connected with main hydraulic line and its outlet is connected with cylindrical movable unit of hydraulic pump. Constant power regulator may be switched-off by delay unit. Regulator is switched on when output power of power unit and output of hydraulic pump reach the magnitudes preset by the following formulae: where N, are respectively output power and normal output power of power unit; Q are respectively output and nominal output of hydraulic pump; P are respectively pressure and nominal pressure of working medium in hydraulic line, k is proportionality factor equal to 1.
EFFECT: enhanced efficiency, reduced wear; increased universality factor.
FIELD: drilling equipment, particularly devices adapted to lower and lift drill string.
SUBSTANCE: device includes connection parts formed on drilling pipe sections, for instance as sleeve or male half of tool joint with tool-joint threads, rotary key for above members and supplementary means. Supplementary means have cavities with sensors and is built in drilling string. The means are also provided with detachable reinforcing clamp made as bails connected one to another. The bails are arch-shaped and plate-type and are pivotally connected one to another. Inner bail surfaces have extensions inserted in grooves formed in supplementary means so that groove dimensions correspond to that of bail extensions.
EFFECT: reduced size of lock connection and increased free space for measuring tools installation.
3 cl, 4 dwg
FIELD: mechanical engineering, particularly connecting or disconnecting drilling and casing pipe couplings or joints.
SUBSTANCE: key is divided into separate independent technological units and has upper and lower bodies with connectors in front parts thereof. Built in the front parts are toothed rotor wheels in which pipe clamping means are arranged. The key also has gear and intermediate gear assemblies, common drive to rotate and stop the pipes. The drive comprises differential and high-speed reduction gears with hydraulic motors. Upper body may be rotated about pipe clamping means axis to lift or lower thereof relative lower body. The body is provided with thread torqueing/loosening means, braking means and means to supply process lubricant to threaded nipple part of pipe to be screwed on. Lower body has thread torqueing/loosening means. The key also comprises positioner provided with horizontal and vertical key displacement mechanisms.
EFFECT: extended functional capabilities, reduced time to replace clamping members of upper and lower key executive tools and braking system members, increased reliability of device units, increased load-bearing capacity of pipe interlocks.
3 cl, 6 dwg
FIELD: mechanical engineering, particularly connecting or disconnecting pipe couplings or joints, spinning wrenches adapted to connect drilling and casing pipes.
SUBSTANCE: device comprises rotary gear with connector provided with pentahedral profile from inner side thereof and cartridge built in the pentahedral profile. The cartridge has upper and lower discs with four clamping means arranged between them in radial direction. The clamping means are made as shuttle mechanisms comprising bodies and jaws with hard-alloy dies. The bodies are built in guiding cartridges and may perform radial movement during rotary gear rotation. Movable pins are built in clamping device body. Projected pin ends mate projections made in cups. The cups are arranged between cartridge discs and provided with spring. Jaw with die is connected with the body by pin so that after pin disconnection the body may be removed from the guiding cartridge.
EFFECT: increased reliability along with increased load-bearing capacity.
2 cl, 3 dwg
FIELD: mechanical engineering, particularly drilling string and casing pipe connection equipment.
SUBSTANCE: method involves stopping one pipe and rotating another pipe for screwing and unscrewing of above pipes with the use of hydraulic drive and braking system to transmit differently directed torques with the same data along with reactive moment reduction by drive and braking system. Device comprises two coaxial power tongs. Each power tong includes body and pipe squeezing mechanism. The power tongs have common drive including high-speed reducer and differential block kinematically connected one to another. Differential block comprises body with outer and inner toothed crowns, planet carrier with three satellites installed on the carrier, the first tong arranged in body, driven gear kinematically connected to planet carrier and the second tong installed in the body and adapted to cooperate with corresponding gears of pipe squeezing mechanisms. Pipe squeezing mechanism of the first tong is fixedly secured to braking pulley of braking system installed on the first tong body. The braking system comprises four pressing shoes and cylindrical case with hydraulic cylinder for shoe pressing arranged so that cylindrical case may rotate with pulley and pipe squeezing mechanism of the first tong relative pipe squeezing mechanism axis. The cylindrical case is additionally provided with two rests. One rest is fixedly connected with cylindrical case and cooperates with two hydraulic cylinders, which are adapted for thread tightening/unfastening. Another rest is connected with cylindrical case by hinged axis and also cooperates with two other hydraulic cylinders, adapted for thread tightening/unfastening, which provides elimination of reverse reaction and increase of pipe squeezing mechanism torque and locking moment.
EFFECT: possibility to use one drive provided with differential gear to perform screwing/unscrewing operations.
2 cl, 2 dwg
FIELD: mechanical engineering, particularly means for connecting or disconnecting pipe couplings or joints.
SUBSTANCE: pipe wrench comprises body with openable flaps and locking mechanism, releasing rotor with jaws, braking means to provide automatic pipe clamping, hydraulic motor and tooth gears with satellites. The rotor comprises central and two side sectors. One side sector end has threaded orifice to receive regulator, which adjusts mutual sector location. The regulator is made as spherical threaded thrust having spherical part cooperating with end part of central rotor sector. Rotor-satellite spacing setting device, which specifies space between rotor and satellite axes is installed in wrench body. The spacing setting device is made as three cylindrical fingers cooperating with basic rotor surface and installed in threaded orifices formed in wrench body along longitudinal axis thereof. The fingers are also arranged in each openable flap at an angle to longitudinal axis.
EFFECT: increased operational reliability.
FIELD: tubular keys.
SUBSTANCE: tubular key contains jaws with through grooves of "dovetail" type on end surface, replacement dies mounted therein, holders. On side surfaces of jaws, grooves of "dovetail" type are made, into which sliders are inserted for holding replacement dies along end surfaces. Through apertures are made in jaws, wherein spring-loaded holders for fastening sliders are inserted.
EFFECT: increased reliability of assembly for holding replacement dies of tubular key.
FIELD: deep drilling and maintenance of oil and gas wells.
SUBSTANCE: machine spanner contains greater and lesser jaws, jointly connected to handle-lever, which is provided with swivels for holding traction and insurance cables, holding toothed dies on aforementioned jaws, mounted in die holders, latch, jointly connected to larger jaw and adapted for interaction with lesser jaw. Larger jaw is made in form of one- or multi-layered (multi-row) packet of flexible resilient elements, on which a row of die holders is located. A packet of flexible resilient elements is made in form of highly durable ribbons or ropes, provided with eyes for connection of jaws to each other by means of fingers, and also with slit and handle-lever.
EFFECT: increased comfort of operation, decreased hazard of injury and increased lifetime.
4 cl, 7 dwg
FIELD: oil and gas well construction, particularly for casing pipes, flow strings and other technological pipes.
SUBSTANCE: pipe spinning-up method involves seating nipple end on one pipe in clutch end of another pipe, which is fixed from rotation; screwing-in nipple end of the first pipe into another one with increasing twisting moment; aligning mark formed on the first pipe with mark created on clutch end of another, fixed, pipe by rotation of nipple end of the first pipe as pipe ends touch each other; screwing-up nipple pipe end. Nipple pipe end at first is screwed-in by hand. Then above pipes are spun-up up to bringing clutch pipe end to level of transversal mark location on nipple pipe end or below above level. Screwing-up of nipple pipe end is carried out due to resilient deformation of thread members to obtain predetermined interference in threaded connection, seal belts and to achieve good air-tightness of pipe ends abutting each other by smooth shock free twisting moment increase at clutch end temperature of not more than 80°C up to bringing into register of nipple pipe end mark with additional mark formed at clutch end of fixed pipe and spaced apart from the first mark created on above pipe in pipe spinning-up direction, wherein the clutch pipe end is located at level of transversal mark formed at nipple pipe end or is below above end and spaced not more than 0.5 mm from above level.
EFFECT: possibility to demonstrate passed spinning-up stages and pipe assemblage termination due to provision of spaced marks bearing different information.
4 cl, 6 dwg
FIELD: oil production, particularly Connecting or disconnecting pipe couplings or joints, namely means of mechanization of trips associated with sucker rods.
SUBSTANCE: sucker-rod tong comprises head with slot for sucker rod receiving and mounting orifices, handle connected to head to provide cooperation with carrier, fixer, which fixes tong engagement of sucker rod and torsion torque limiter, which limits torsion torque during sucker rod screwing together. Torsion torque limiter has torsion torque regulation means and includes resilient rod, clip and cutoff plate. Resilient rod is threadedly secured to box-like head and is off-centered with respect to sucker rod axis. Corner depression is formed at resilient rod end so that the depression is aligned with end thereof along depression radius. Roller secured to clip cooperates with the depression. Clip is installed on handle by means of pin and is spring-loaded towards handle pin as tong is installed in working position. Cutoff plate is installed on head. Cutoff plate has beveled part reverse to the corner depression of resilient rod. In working tong position roller of spring-loaded clip cooperates with the depression. Handle is supported by pin passing in mounting orifice of head and off-centered with respect to resilient rod and sucker rod axes.
EFFECT: improved operational conditions and decreased accident risk due to possibility to break mechanical connection between carrier and tong at predetermined tightening torque.
4 cl, 2 dwg