Support unit of hydraulic wrench rotor
SUBSTANCE: support unit of a hydraulic wrench rotor includes support elements arranged in the body and contacting with the end surface of the geared rim and the cylindrical external surface of a split gear of the rotor, besides, support elements are made of two cylindrical support plates installed in the body and joined together, having cavities along the inner diameter in the place of their connection, at the same time the end surface of the geared rim and the cylindrical outer surface of the split gear of the rotor contact with appropriate surfaces of the support plates cavity arranged from a composite material.
EFFECT: increased reliability of device operation with simultaneous simplification of design and cheapening of assembly and repair.
The invention relates to the oil and gas industry, such as technical equipment for workover, including a device for screwing and unscrewing tubing.
Closest to the proposed technical solution is the key trumpet, selected as a prototype, in which the reference node of the rotor of the hydraulic wrench includes located in the body of the key supporting elements in contact with the end surface of the ring gear and the cylindrical outer surface of the split gear rotor (patent RF №2328587). The supporting elements are rollers mounted in the housing of the hydraulic wrench with the use of bearings to allow free rotation. The rollers are in contact with the outer cylindrical surface and end surface of the ring gear cutting gear, holding it against vertical and horizontal movement. During rotation, as transmitted from the shaft of the motor, kinematically through mechanical transmission of the split gear, freely rotating rollers are able to roll on its surface.
The disadvantages of this solution are the frequent failure of the rollers, the complexity and high cost of their manufacture and replacement.
The objective of the invention is one is to increase the reliability of the device while simplifying the design and reducing the cost of Assembly and repair.
The technical problem is achieved by the fact that in the reference node of the rotor of the hydraulic key, which is located in the body of the key supporting elements in contact with the end surface of the ring gear and the cylindrical outer surface of the split gear rotor according to the invention, the supporting elements are made of two, mounted in the housing and connected with the cylindrical supporting plates having an internal diameter at the point of connection of the cavity, while the end surface of the ring gear and the cylindrical outer surface of the split gear rotor in contact with the corresponding surfaces of the cavity of the support plates made of composite material.
The implementation of supporting elements in the form of plates made of composite material, in contact with a cylindrical outer and end surfaces of the ring gear cutting gear rotor, ensures smooth rotation without shock due to the fact that the material of the supporting elements has a damping higher than metal rollers, and also due to the fact that the supporting elements provide a continuous contact with the surfaces of the split gear. Design provides increased reliability of the device operation and the simultaneous simplification of the structure, which leads to reduce the cost of Assembly and repair.
Patent research has shown that in the investigated prior art do not have the same technical solution, i.e. the claimed technical solution is not clear from the investigated prior art and, thus, meets the criterion of "inventive step".
This solution may be reproduced industrially, therefore, it meets the criterion of "industrial applicability".
The invention is illustrated by drawings, where figure 1 presents a top view of the hydraulic wrench; figure 2 - support surface hydraulic switch, 3 - ring gear; figure 4 is a section along a-a in figure 1.
The reference node of the rotor of the hydraulic key contains within the enclosure split gear drive rotor 1, a basic element of the bottom 2, supporting the top member 3, connected by bolts. The split gear 1 is connected with a split sleeve 4, with the jaws 5 with 6 dice. In the support elements 2 and 3 on the surface of their connection to the inner cylindrical surface of the cavity 7. The end surface of the ring gear 8 and the cylindrical outer surface 9 of the split gear 1 is in contact with the corresponding surfaces 7 of the cavity under the supporting elements 2 and 3. The supporting elements 2 and 3 are made of to nosatogo material. The movement of the hydraulic motor is transmitted through the shaft 10 and the mechanical transmission 11.
The device operates as follows.
Hydraulic torque wrench is suspended over the mouth of the well and is connected to the string of pipe. Submitted to the hydraulic motor hydraulic energy is converted into mechanical energy, which is kinematically through the shaft 10 of the motor and mechanical transmission 11 is transmitted to the split gear drive rotor 1 is installed and rotating using the principle of sliding in the support elements 2 and 3. Next, the movement is transmitted to the split sleeve 4 with the jaws 5 with 6 dice. A seizure occurs pipe and further the process of screwing or unscrewing pipes.
The present invention improves the reliability of the device due to the use of supporting elements made of composite material, using for the transmission of motion, the principle of sliding. This simplifies the design and reduced the price process of Assembly and repair.
The reference node of the rotor of the hydraulic key, which is located in the body of the key supporting elements in contact with the end surface of the ring gear and the cylindrical outer surface of the split gear rotor, characterized in that the supporting elements are made of two mounted in the housing and connected with the cylindrical support dps is Steen, having an internal diameter at the point of connection of the cavity, while the end surface of the ring gear and the cylindrical outer surface of the split gear rotor in contact with the corresponding surfaces of the cavity of the support plates made of composite material.
FIELD: machine building.
SUBSTANCE: rotor assembly of hydraulic wrench includes a drive rotor located in the wrench housing and having a connector, rollers contacting the drive rotor and a split bushing with jaws with plates, which are installed in it. Assembly is provided with two moving jaws with plates, which are mirror-like located symmetrically relative to axis of split bushing with a fixed jaw; at that, moving jaws have shaped curved convex and concave surfaces contacting the rollers.
EFFECT: improving operating reliability of the device and improving the productivity owing to reducing the number of readjustments during operation with pipes with simultaneous simplification in operation.
FIELD: machine building.
SUBSTANCE: invention refers to tubular products gripping and manipulation tool. Gripping tool has gripping surface that is borne against movable gripping elements and control mechanisms for radial movement of the gripping surface from retracted to extended position. Gripping tool includes control mechanisms comprising at least one control mechanism with three cam clutches, which in its turn includes drive cam clutch receiving the input rotation and tending to the rotation transfer; intermediate cam clutch receiving the input rotation only from drive cam clutch; driven cam clutch receiving the input rotation only from intermediate cam clutch; drive cam pair acting between drive cam clutch and intermediate cam clutch so that input rotation is transmitted by drive cam pair from drive cam clutch to intermediate cam clutch, and driven cam pair acting between intermediate cam clutch and driven cam clutch so that input rotation from intermediate cam clutch is transferred by driven cam pair to driven cam clutch.
EFFECT: providing the control of axial and radial movements of gripping tool surface.
10 cl, 13 dwg
FIELD: machine building.
SUBSTANCE: required values of detachment pressure are determined on the basis of rod size and/or pipe dog type. The upper and lower limits for permissible values of rod detachment pressure may be calculated on the basis of the required pressure of detachment and/or rod size. Values of rod detachment pressure below the lower limit and above the upper limit specify the necessity to analyse the rod condition in order to identify whether this rod may be used repeatedly. The values of rod detachment pressure may be recorded as data of detachment pressure for subsequent assessment, including detection of improper unscrewing of rods and poor condition of a well.
EFFECT: invention provides for identification of pipes that require replacement.
25 cl, 13 dwg
FIELD: machine building.
SUBSTANCE: top drive comprises gripping device jointed thereto and arranged there under, and four grippers each being arranged on piston with gripping cylinder. Proposed method of pipe gripping above top drive comprises activating pistons and cylinders of above said device. Invention covers also top drive with drive shaft, component coupled with said shaft and gripping device with mouth suspended to top drive and provided with first splined element. Note here that said component has second splined element for engagement with first splined element to selectively decelerate component rotation for unlocking the joint with top drive driving shaft. Note also that gripper comprises two parts that move for opening the mouth. Proposed method comprises engaging said second splined element and decelerating component rotation for unlocking the joint.
EFFECT: normal operation of top drive, easier installation, smaller installation space.
30 cl, 6 dwg
FIELD: oil and gas production.
SUBSTANCE: heat breaker consists of base member and of steam generator. The latter has a handle connected to a case with bushings and screws. In the case there is installed a container consisting of a tubular electric heater, of heat carriers and of a shedding screen. Also, heat-insulating material and shutters equipped with the heat screen and movably connected to the case by means of loop are positioned between the case and the container. A mechanism of shutters opening consists of ears, a cable, a lever and springs closing the shutters. A mechanism of fluid supply to the heat carrier corresponds to a compartment with a removable cover wherein there is arranged a spring loaded tube with a valve, while a cover-stop is set above the container with screws.
EFFECT: reduced stress in threaded connections of pipes before their unscrewing, enhanced efficiency of threaded connections in oil pipes; upgraded quality and reliability of threaded connections during pipe unscrewing; increased service life of pipes.
FIELD: process engineering.
SUBSTANCE: invention relates to automation of pipe running and pulling in oil extraction. Proposed device comprises drilling data base that stores records about pipe elements, controlled-torque wrench with rotation drive, and controller. In screwing off, controller detects records in drilling data base on type of pipe elements to allow wrench torque control or that of rotary device to connect additional pipe section to pipe casing, or to screw off joint between pipe elements in compliance with parametres of given pipe elements joint. Various components of drilling unit incorporate transducers, magnitudes transmitted by said transducers being controlled. Simultaneously with screwing off/on jobs, timers are initiated. When magnitudes red by transducers fall beyond preset range, or when performance of aforesaid jobs last too long to completion, emergent situations originate.
EFFECT: acceleration of jobs at drilling site.
26 cl, 3 dwg
FIELD: oil and gas industry.
SUBSTANCE: wrench with adjustable torque moment for pipe elements includes lower and upper grips, pivot bearing located between grips, actuation system connected between grips and system for measurement of actual radius or system for measurement of actual vector of force created with actuation system. At that, pivot bearing provides the possibility of turning upper and lower grips relative to each other by means of actuation system. Measurement method of torque moment at bringing the wrench into operation involves measurement of actual radius measured perpendicular to force vector and between force vector and rotation axis of pipe element, or measurement of actual force which is applied for action of torque moment on the connection, and calculation of torque moment on the basis of at least one measurement.
EFFECT: increasing operating efficiency of spinning wrench.
12 cl, 6 dwg
SUBSTANCE: device for moving, connecting and disconnecting pipe section with pipe column contains pipe engagement assembly made capable to be connected with driving shaft of upper drive to transfer torque during pipe section spinning up/down. Herewith, pipe engagement assembly has self-engaging ball and cone assembly made capable to engage with pipe section. Ball and cone assembly is resistive to both static and dynamic load and is configured to carry total weight of pipe column during simultaneous rotation and vertical movement of the pipe column in a well. Pipe engagement assembly may be made interchangeable with internal or external pipe section gripper with power disengager controlled by hydraulic or pneumatic system, and with locking mechanism. Ball and cone assembly contains multiple balls with at least one direction inside multiple cones; herewith, multiple cones are oriented in at least two different directions. The claim also includes methods for engagement and disengagement of pipe section with pipe column using the said device.
EFFECT: reduced labour input for round trip operations.
28 cl, 8 dwg
FIELD: gas-and-oil industry.
SUBSTANCE: hydraulic key for starting screw of drilling column consists of two successively installed sections: first one hinged on bracket of drill tower and second one with fixed jaw, of movable jaw, of rocking arm, of hydro-cylinders for supply, lock, and start and of limit switch installed between bracket and first section. The first section has a slot wherein a centre pin of the second section enters. One lever of the rocking arm is pivotally connected to the movable jaw, its central part is connected to the second section, while the lock hydro-cylinder is positioned on the second lever of the rocking arm coupling it with the second section. The hydro-cylinder of supply is arranged on the drill tower and the first section; the hydro-cylinder of start is positioned on the first and second sections. Also the hydraulic key is equipped with an additional limit switch installed between the first and the second sections. Axis of the hydro-cylinder of start forms angle 45÷90° with a straight line passing through contact points of the jaw of the second section with the drilling column; also points of fixture of the hydro-cylinder of start on the first section and points of fixture of the first section on the bracket coincide.
EFFECT: increased reliability and automatic control of hydraulic key operation.
2 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: drive, rotating chuck kinematically tied with drive, and unit of fixation and axial feed of pump rod are mounted on foundation. The rotating chuck corresponds to end flanges coaxially arranged and rigidly tied, and to two rings installed between the flanges; the chuck is inserted between rings of a separator. The separator is equipped with offset cams arranged on axes and has slots and lugs correspondingly interacting with lugs and recesses of the cams.
EFFECT: expanded process functionality and arsenal of stationary tools for tube bases and repair shops of oil industry enterprises.
3 cl, 4 dwg
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