44 results about "Roughneck" patented technology

The invention relates to the technical field of petroleum drilling and workover treatment, in particular to a petroleum drilling and workover rig pipe tool operation method. The pushing and supporting robot is arranged between the wellhead of the drill floor surface and the power catwalk, and is matched with equipment such as a traveling and hoisting system and an iron roughneck to execute the steps of transferring, screwing, lowering and the like of pipes, so that the single pushing and supporting robot can simultaneously cover the transferring of the pipes from the catwalk to the wellhead and a rat hole and the transferring of the pipes from a racking platform to the wellhead, and a special drill floor pipe racking machine does not need to be additionally arranged; and furthermore, the operation method is suitable for various working conditions, and collaborative operation is simple and convenient.

The invention discloses a quick tripping drilling machine and a tripping and tripping method thereof. The drilling machine comprises a site multifunctional device which is arranged on the front ground and used for turning a drilling tool into a horizontal state or a vertical state; the power drill rod box is arranged on at least one side of the site multifunctional device and used for conveying drilling tools to the site multifunctional device or receiving the drilling tools from the site multifunctional device. The base is arranged on the ground on the rear side of the site multifunctional device, the base is provided with a power slip used for clamping a drilling tool in the center of a well mouth, an iron roughneck used for screwing on and screwing off at the position of the well mouth and a derrick, a top drive is arranged in the derrick, a power elevator is hung on the lower portion of the top drive, and a pushing manipulator is arranged on the middle rear portion of the derrick. By means of flexible configuration and collaborative operation of the ground site multifunctional device and the power drill rod box, the three-joint unit does not need to be stored on a table top in the tripping operation process, and operation is directly conducted between the drill rod box and a well mouth.

The invention discloses a telescopic iron roughneck, which belongs to the technical field of wellhead automation equipment, and comprises a base, a slewing mechanism, a stand column, a pulley body, a telescopic rod assembly, a clamp body support frame, a lower clamp box and an upper clamp box, the stand column is fixed on the base through the slewing mechanism, a guide rail is arranged on the stand column, and the tackle body is arranged on the guide rail; one end of the telescopic rod assembly is fixed to one side of the pulley body, and the other end of the telescopic rod assembly is provided with a clamp body supporting frame. The sliding trolley is provided with a lifting mechanism, the lower clamp box and the upper clamp box are arranged on the clamp body supporting frame, and the upper box body can rotate relative to the lower box body. Oil cylinder frames are arranged on the two sides of the lower clamp box, the buckle punching oil cylinders are installed on the oil cylinder frames, and piston rods of the buckle punching oil cylinders are hinged to the two sides of the upper clamp box; the upper clamp box is provided with a butt clamp mechanism and a spinning mechanism; the lower clamp box is provided with a lower drilling tool clamping clamp and a lower drilling tool clamping oil cylinder. In conclusion, the device is compact in overall structure, small in size in the height direction and large in telescopic stroke.

The present invention provides a control method, device and drilling equipment for an iron roughneck. The method includes: obtaining the cantilever extension length, the initial value of the tong body height and the drill pipe collar height at the current moment; based on a preset rule, determining the height change value of the tong body during movement according to the cantilever extension length, and determining the target adjustment height in combination with the height change value, the initial value of the tong body height and the drill pipe collar height; controlling the iron roughneck to act until the lifting and lowering value of the stand height is equal to the target adjustment height. The technical solution of the present invention controls the action of the iron roughneck in combination with the height change of the tong body during movement, improves the accuracy of the drill pipe collar height positioning, and improves the safety of drilling operations.

The application discloses an iron roughneck clamp body floating device and an iron roughneck clamp body device, and relates to the technical field of iron roughnecks, wherein the iron roughneck clamp body floating device has a first oil passage and a second oil passage, the end of the second oil passage is communicated with the first oil passage, the iron roughneck clamp body floating device comprises an oil supply assembly, a hydraulic mechanism, an accumulator and an on-off structure, the oil supply assembly comprises an oil supply tank and a switching structure, the oil supply tank is communicated with one end of the first oil passage, the switching structure is arranged in the oil supply tank to switch the flow direction of the first oil passage, the hydraulic mechanism comprises a cylinder and a jacking structure, the inner cavity of the cylinder is communicated with the other end of the first oil passage, the jacking structure is slidably arranged in the inner cavity of the cylinder along a first direction and partially exposed from the cylinder, the jacking structure is used for connecting a main clamp and driving the main clamp to move along the first direction, the accumulator is communicated with the other end of the second oil passage, and the on-off structure is arranged in the second oil passage to switch the on-off of the accumulator and the first oil passage. In this way, the clamping position of the clamping clamp can be actively adjusted.

The invention relates to the field of engineering simulation, in particular to an iron roughneck oil cylinder hinge point driving optimization method and device, equipment, a medium and a product. According to the method, the basic simulation model capable of being regulated and controlled in a parameterized mode is established, the hinge point of the push-pull oil cylinder is set as a design variable, and the boom is subjected to flexible processing, so that the problem that vibration of the boom based on a rigid body cannot be simulated is solved, and driving function parameters can be dynamically adjusted along with the position of the hinge point; by initializing a parameter group and carrying out parallel simulation, the single optimization period is greatly shortened, and the driving parameters are prevented from being manually adjusted for multiple times; meanwhile, a dynamic graph is drawn in combination with simulation data and iterative data, and performance differences under different driving functions can be visually presented, so that the optimal solution of the oil cylinder force is accurately explored, and the defects that in the prior art, the optimization period is long, and the deviation between the result and the actual working condition is large are effectively overcome.

The utility model discloses an iron driller screwing buckle device relates to petroleum drilling equipment field. The utility model discloses an iron driller screwing buckle device includes the connecting frame assembly, and the connecting frame assembly back installs a group two jacking spring mechanism, and the inboard of connecting frame assembly is equipped with the bearing, and is matched with screwing buckle device guide rail, and the top of screwing buckle device guide rail is linked with screwing buckle device support, and the screwing buckle device support is U-shaped support, and the back of screwing buckle device support is equipped with control valve group, and both sides front end respectively is equipped with the clamping oil cylinder, and the middle is provided with the waist -shaped sliding slot of through -type, and left screwing buckle wheel, right screwing buckle wheel can along waist -shaped sliding slot synchronous clamping or open.

The offshore drilling off-line root setting device comprises a derrick, the derrick is fixed to a drill floor face, a catwalk is installed on the front side of the drill floor face, an auxiliary iron roughneck is arranged between the catwalk and the drill floor face, the auxiliary iron roughneck is provided with a first rat hole and a second rat hole in an opposite mode, and a third rat hole is formed between the catwalk and a well mouth. A main iron roughneck is arranged on the side, close to the well mouth, of the drill floor face, and a bridge type lifting machine is installed on the derrick. The invention also discloses a method for establishing a root by using the root establishing device. According to the offshore drilling off-line root establishing device and method, the problem that top drive drilling operation and off-line root establishing operation of a single-derrick drilling system cannot be carried out at the same time is solved.

The application relates to the field of iron roughneck control, and discloses an iron roughneck clamping control method and device, an iron roughneck and a storage medium. The method comprises the following steps: acquiring the suspension displacement of a suspension oil cylinder and the rotation angle of a rotating motor in the iron roughneck, the suspension oil cylinder being used for controlling the suspension movement of a main clamp, and the rotating motor being used for controlling the rotation movement of the main clamp; calculating the rotating speed of the rotating motor through the rotation angle, and calculating the suspension speed of the main clamp when performing the suspension movement through the suspension displacement; calculating the theoretical pitch parameter of a drill rod according to the suspension speed and the rotating speed, and identifying whether the iron roughneck has rotation slip through the corresponding relationship between the actual pitch parameter and the theoretical pitch parameter of the drill rod; and when the iron roughneck has rotation slip, adjusting the pressure of a clamping oil cylinder in the iron roughneck, so that the clamping force of the main clamp and / or an auxiliary clamp of the iron roughneck is increased. The application improves the accuracy and timeliness of the identification of the slip phenomenon of the iron roughneck, and further improves the timeliness of the clamping force control.

The invention belongs to the technical field of oil exploration equipment, and particularly provides an automatic upward drill throwing control system, a pipe column output end of a catwalk is connected with a drill floor, the drill floor is respectively connected with a drill floor manipulator, a slip and an iron roughneck, and a racking platform is respectively connected with a racking platform manipulator and an elevator. And the intelligent centralized control device is electrically connected with the catwalk, the drill floor manipulator, the slips, the iron roughneck, the racking platform manipulator and the elevator respectively. The problems that the safety is poor and the efficiency is low due to the fact that an existing driller and drill floor manual cooperation mode is adopted for completing upper drill throwing operation are solved. According to the invention, the communication among the devices is ensured, the linkage among the devices is realized through the communication, the action of the next device is automatically triggered by the information completed by one device according to the process of upward drill throwing, the integrity of the information interaction of the devices is ensured, the overall efficiency of the system is improved, the manual operation is reduced, and the safety is improved.

The utility model relates to a position-adjustable mouse hole device which comprises a mouse hole pipe and a driving mechanism for driving the mouse hole pipe to move, and the mouse hole pipe is arranged beside the center of a well mouth and used for storing a water faucet and a kelly bar. The driving mechanism drives the mouse hole pipe to move towards the side away from the center of the well mouth, and therefore operation space is reserved for the iron roughneck. The driving mechanism is arranged on the drill floor surface, the mousehole pipe is driven by the driving mechanism to move, an operation space is avoided for an iron roughneck, interference of a faucet and a kelly bar with wellhead equipment, the iron roughneck and a three-joint unit area is avoided, and potential safety hazards of equipment operation are reduced; meanwhile, the rat hole pipe can be arranged at a position close to the center of the well mouth, so that the labor intensity of inserting the water faucet and the kelly bar into the rat hole is reduced; the utility model is suitable for drilling machines and workover rigs with smaller drill floor space.

The present application iron roughneck clamping force self-adaptive control system, including hydraulic control system and electrical control system two subsystems, hydraulic control system is mainly composed of lower jaw, clamping force sensor, upper jaw, lower jaw control valve, upper jaw control valve, clamping force control valve, torque control valve, impact cylinder control valve, torque sensor, impact cylinder, shuttle valve a and shuttle valve b; electrical control system is composed of operation unit, PLC controller, remote control relay, proportional amplifier and the like. The system records and analyzes the past upper and lower drilling tool data, automatically matches the best clamping force for different drilling tools, and automatically adapts to the change of the clamping force during the upper and lower make-up and break-out of the drilling tool. The problem of the drilling tool being clamped, the success rate of the drilling tool being made up and broken out being reduced, the clamping jaw mechanism being worn, the jaw being consumed at a faster speed, and the equipment maintenance cost being increased is solved.

The invention relates to the technical field of machinery for petroleum drilling engineering, in particular to a compact iron roughneck. The compact iron roughneck comprises a spinning device, a multidirectional adjusting structure and a punching device. The spinning device comprises a spinning support, a spinning assembly, a pulley assembly and two clamp arm assemblies symmetrically arranged at the two ends of the spinning support, the two clamp arm assemblies are rotationally connected with the spinning support and used for clamping or releasing a drilling tool, and the spinning support is slidably connected with the end of the multi-direction adjusting structure through the pulley assembly. The spinning assembly is at least partially arranged in the spinning support and the two clamp arm assemblies and used for screwing in or screwing out the drilling tool clamped by the clamp arm assemblies. The longitudinal size of the spinning device is compressed, so that the overall height and size of an iron roughneck are reduced, and the iron roughneck can better adapt to the working environment with limited space.

The present invention relates to a method for automated handling of drilling tools on a drilling and workover rig, comprising the following steps: S11, a drilling control system controls a traveling hoist system to lift a target drilling tool in a wellbore to a target height, and the drilling control system controls a slip lifting and lowering device at a wellhead position to clamp the target drilling tool; S12, the drilling control system controls a roughneck on a drilling platform to disconnect the drilling tool and the target drilling tool in the wellbore; S13, the drilling control system controls a sub-deck manipulator below the second-deck platform of the derrick and a drilling platform manipulator on the drilling platform to lift the target drilling tool to a position away from the wellhead and transfer the target drilling tool to a handover position; S14, the drilling control system controls an on-deck manipulator above the second-deck platform of the derrick and a drilling platform manipulator to transfer the target drilling tool from the handover position to a storage position within the finger beam of the second-deck platform of the derrick for storage. The method has the beneficial effect of improving safety and operational efficiency.

The application discloses a full-electric micro-hydraulic intelligent control iron driller, and relates to the technical field of automatic machine tools in the petroleum industry. The iron driller comprises a guide mechanism, a mechanical arm mechanism, a positioning mechanism, a driving mechanism and a make-up evaluation system. The make-up evaluation system collects torque, displacement, number of turns, vibration and temperature data, constructs a torque-displacement-number of turns adaptation model, outputs an adaptation degree and adjusts operation parameters in real time, and ensures make-up quality. The application adopts electro-hydraulic fusion control and intelligent algorithms, realizes high-precision and self-adaptive operation, effectively reduces thread damage rate, improves reliability and efficiency in extreme environments, and supports flexible switching between full-hydraulic and full-electric hydraulic modes, and has the advantages of powerful power and energy saving and environmental protection.

The utility model relates to the field of iron roughneck bases, and discloses an iron roughneck base capable of being rapidly disassembled and assembled. A main supporting ring is welded to the inner surface of a lower supporting ring, main supporting arms are movably connected to the inner surface of the main supporting ring, auxiliary supporting arms are movably connected to the inner surface, corresponding to the main supporting arms, of the main supporting ring, a cross beam is movably connected to the outer surface, above the main supporting ring, of the main supporting arms, and a lantern ring is movably connected to the outer surface, corresponding to the auxiliary supporting arms, of the cross beam. The corresponding main supporting arm and the auxiliary supporting arm can only rotate at the main supporting ring, and the upper ends of the main supporting arm and the auxiliary supporting arm are driven to make contact with the iron roughneck under assistance of the fixing buckle and the stress ring. The oil pump pumps oil to the oil pressure main body through the connecting pipe, the oil pressure main body fixes the outer surface of the iron roughneck and completes assembly under the control of oil pressure, the cross beam at the upper end can rotate at the position of the main supporting arm, a stable fixing frame is formed under the action of the oil pressure, and the movable space corresponding to the auxiliary supporting arm is slightly large; the acting force of outward pressing is applied to the main supporting arms on the two sides through the lantern rings, and uniform stress is guaranteed.

The present application relates to the technical field of oil drilling and exploitation, and particularly relates to a method and system for detecting a tool joint of an iron roughneck based on deep learning, wherein a recognition device inputs a first original image into a tool joint detection model to obtain coordinates of the tool joint in a pixel coordinate system; a backbone network of the tool joint detection model is used to extract image features of the original image, and the backbone network comprises joint attention modules added after two down-sampling modules of the backbone network respectively; the joint attention modules are used to perform feature fusion on the first original feature image after assigning attention weight values to the first original feature image along a channel dimension and a spatial dimension respectively, so as to obtain a feature fusion image; the recognition device generates a control instruction according to the coordinates of the tool joint in the pixel coordinate system and sends the control instruction to an iron roughneck central control device, so that the iron roughneck central control device controls the iron roughneck to perform a make-up or break-out operation. The method has the beneficial effect that full intelligentization and automation of iron roughneck control are realized through a high-precision tool joint detection model.

The invention discloses a deepwater seabed unmanned iron roughneck. The deepwater seabed unmanned iron roughneck comprises a base mounting cylinder; an angle adjusting mechanism is arranged between the base and the base mounting cylinder; the vertical sliding guide rail is fixed on the base, and the guider is matched with a sliding groove of the vertical sliding guide rail through a rolling bearing assembly; the cylinder body is fixed on the guider, and the piston rod end is connected with the bottom of the vertical sliding guide rail; the V-shaped horizontal telescopic arm is connected with the guider and the hydraulic upper shackle pliers through a connecting rod mechanism and is driven by a horizontal telescopic oil cylinder to horizontally stretch out and draw back; the hydraulic spinner comprises an elastically suspended main support and a left-right spinner driven by a holding oil cylinder, and the left-right spinner drives the drilling tool to rotate through a hydraulic motor; a control element is packaged in the seabed electrical element bin by adopting a sealed pressure-resistant shell; and an external pressure balance valve and a hydraulic balance loop are integrated in the integrated valve box. The invention provides iron roughneck equipment which adapts to the seabed working condition environment and can be used for connecting and detaching a drilling tool.

The utility model discloses a racking platform mechanical arm with a centralized lubricating device and iron roughneck equipment, and relates to the technical field of oil drilling and workover equipment, the racking platform mechanical arm comprises a mechanical arm, an arm support worm gear speed reducer, a rotary worm gear speed reducer and a trolley assembly, lubricating openings are formed in the arm support worm gear speed reducer, the rotary worm gear speed reducer and the trolley assembly; the oil injection device further comprises an oil injection distributor and a plurality of oil pipes. The oil injection distributor is provided with at least one oil injection port and at least one oil outlet. One end of each oil pipe is connected with an oil outlet hole of the oil injection distributor, and the other end of each oil pipe is connected with a lubricating opening of the racking platform manipulator. According to the technical scheme provided by the utility model, oil is injected into the pressure release valve block in a centralized manner, so that each lubricating port on the racking platform manipulator can be lubricated, the lubricating steps are simplified, the lubricating efficiency is improved, and the lubricating safety is improved.

The present application relates to a kind of drilling tool and the iron driller with it, wherein, including support, clamping arm, swing arm, swing mechanism and positioning assembly;The clamping arm is movably installed on the positioning assembly, the positioning assembly is rotatably installed on the support, and its rotation axis is transversely oriented;The swing mechanism is installed to the support, and the swing arm is rotatably installed to the swing mechanism, to drive the swing arm to rotate in horizontal plane, with the clamping arm and release drilling tool;When the clamping part of the clamping arm and the swing arm is clamped the drilling tool, the drilling tool can only be transversely positioned;The support can be installed on the body of iron driller.It has beneficial effects that the drilling tool and the iron driller can be directly installed on the iron driller, the structure is small in size, does not occupy the space of drilling platform, and its mechanization degree is high, and safety and operation efficiency are greatly improved.

The present application relates to a kind of iron driller hydraulic systems, including hydraulic pump station, electromagnetic reversing valve group, pilot pressure reducing overflow valve, two parallelly arranged upper and lower off oil cylinder;The oil supply port and oil return port of hydraulic pump station are communicated with the corresponding oil port of electromagnetic reversing valve group one-to-one, and electromagnetic reversing valve group includes first working link, and first working link has first working oil port and second working oil port, first working oil port is communicated with the rodless cavity of two upper and lower off oil cylinder, the rod cavity of two upper and lower off oil cylinder is communicated with the B port of pilot pressure reducing overflow valve, the T port of pilot pressure reducing overflow valve is communicated with the oil tank of hydraulic pump station, and the A port of pilot pressure reducing overflow valve is communicated with second working oil port.Iron driller hydraulic system, by pilot pressure reducing overflow valve, realize that the screwing pressure reaches set pressure, carry out low pressure overflow, so that it can guarantee that screw is tightened, and can prevent screw damage.

The present invention relates to an automatic pipe string processing system for a drilling rig, which includes a base, a derrick, a crown block, a top drive, a hydraulic elevator, an intelligent drilling robot, a drill floor manipulator, a power drill pipe box, a lifting power catwalk, a power drill pipe box, a rail-mounted iron roughneck and a telescopic boom iron roughneck. The crown block, the top drive and the hydraulic elevator cooperate with the drilling rig to raise and lower the drill pipe. A steel structure guide rail is provided on the derrick, and the intelligent drilling robot is slidably connected to the steel structure guide rail through four groups of rollers. A track is provided on the drill floor of the base, and the drill floor manipulator is slidably connected to the track. The power drill pipe box and the lifting power catwalk cooperate to transfer the pipe string. The rail-mounted iron roughneck is movably connected to the drill floor of the base through gears and racks, and the telescopic boom iron roughneck is fixed on one side of the drill floor of the base. A novel automatic pipe string processing system of the present invention can greatly improve the pipe string processing efficiency, and at the same time has a high degree of equipment automation, reduces the labor cost and reduces the relevant safety hazards.

The utility model discloses an integrated iron roughneck and a mud collecting device thereof, the integrated iron roughneck and the mud collecting device thereof comprise an iron roughneck and a mud collecting device, a back-up wrench of the iron roughneck comprises a left connecting rod, a left pull rod, a right connecting rod and a right pull rod which are symmetrically arranged along two sides of a jaw, and a clamping oil cylinder at the rear part of a wrench body; the telescopic motion of the clamping oil cylinder drives the back-up clamp to be opened and closed. According to the integrated mud collecting device, the mud blowout preventing and collecting function after pipe screwing-off is achieved while the pipe screwing-off and screwing-off operation function is achieved, mud collecting box single equipment does not need to be independently arranged, the space of a drill floor is saved, and the configuration cost is reduced; through structural optimization, the mud collecting device and the iron roughneck back-up clamp share the clamping oil cylinder, execution pieces such as an oil cylinder / an air cylinder and control pipelines and valves do not need to be additionally arranged, and a corresponding hydraulic or pneumatic system and a control system are simple, easy to operate, convenient to maintain and low in cost.

The utility model relates to a hydraulic station for an iron roughneck. The hydraulic station comprises a main body frame, and a motor pump set, a totally-closed oil tank, a radiator and a control valve block which are arranged in the main body frame, the height and the length in the front-back direction of the body frame are matched with the height and the length of the totally-closed oil tank, the radiator and the motor pump set are located on one side of the totally-closed oil tank, the radiator is located above the motor pump set, and the sum of the heights of the radiator and the motor pump set is smaller than the height of the totally-closed oil tank. The length of the main body frame in the left-right direction is matched with the sum of the widths of the radiator and the totally-closed oil tank; an oil inlet and an oil return opening of the motor pump set are communicated with the totally-closed oil tank, an oil outlet of the motor pump set is communicated with an oil inlet of the control valve block, and the control valve block can be communicated with an iron roughneck. An oil return opening of the control valve block is communicated with an oil inlet of the radiator, and an oil outlet of the radiator is communicated with the totally-closed oil tank. The device has the advantages of being reasonable, compact and small in overall structure, not occupying too much space of a drill floor surface, and meanwhile being capable of meeting the using requirements of iron roughneck.

The invention relates to the technical field of iron roughneck devices, and discloses a pipe wrench mechanism and a control method of an iron roughneck and the pipe wrench mechanism. The pipe wrench mechanism comprises a rack, pipe wrench assemblies, a punching and buckling oil cylinder, a reset oil cylinder, a first position sensor and a controller, the two pipe wrench assemblies are hinged to the punching and buckling oil cylinder, and the punching and buckling oil cylinder drives the two pipe wrench assemblies to move in the opposite directions or in the opposite directions; one end of the reset oil cylinder is hinged with the rack, and the other end is connected with the pipe wrench assembly; the first position sensor is arranged on the punching oil cylinder; the controller is configured to control the reset oil cylinder to stop running for a preset duration when the punching oil cylinder drives the two pipe wrench assemblies to move oppositely and the displacement of the punching oil cylinder reaches a first preset displacement amount. According to the pipe wrench mechanism controller, starting and stopping of the reset oil cylinder can be controlled according to the displacement of the punching and buckling oil cylinder, so that accurate control over the recovery path of the pipe wrench assembly is achieved, interference and collision between the pipe wrench assembly and a drilling tool are prevented, and the probability of damage to the pipe wrench assembly and the drilling tool is reduced.

The utility model relates to technical field of iron driller hydraulic system especially relates to a kind of hydraulic system of iron driller emergency disengaging wellhead, including oil inlet oil circuit, oil return oil circuit and the telescopic oil circuit and rotary oil circuit that can be communicated with oil inlet oil circuit and oil return oil circuit, when hydraulic system is powered off, telescopic oil circuit and rotary oil circuit are disconnected with oil inlet oil circuit and keep communication with oil return oil circuit, and hydraulic system can be switched between retraction state and reverse state;Its beneficial effect is that oil liquid can be input to telescopic cylinder's rod cavity by the secondary oil circuit, so that hydraulic telescopic cylinder retracts, and then makes iron driller far away from wellhead in lateral direction;By communicating secondary oil circuit with reverse oil circuit, make iron driller reverse swing, far away from wellhead in circumferential direction, solve the safety hidden danger and safety accident problem caused by iron driller in the prior art in hydraulic electric control system failure or sudden power failure, cannot quickly and efficiently operate iron driller to leave work wellhead.

The invention discloses a rail type closed clamp iron roughneck, and relates to the technical field of oil drilling devices. An opening is formed in one side of the bottom frame; the stand column is mounted on the bottom frame; the vertical guide rail is mounted on the stand column; the stand column is sleeved with the lower clamp assembly, a lower working hole is formed in the middle of the lower clamp assembly, and the lower clamp assembly moves up and down along the vertical guide rail; the upper clamp assembly is arranged on the stand column in a sleeving mode, and the upper clamp assembly is located above the lower clamp assembly; lower working holes are formed in the corresponding positions of the upper clamp assembly and the lower clamp assembly, and the upper clamp assembly moves up and down along the vertical guide rail. The upper clamp assembly and the lower clamp assembly each comprise a lifting motor and a lifting driving wheel, the lifting driving wheels are installed at the output ends of the lifting motors, and the lifting driving wheels are engaged with the vertical guide rails. The technical problems that an existing iron roughneck is complex in structure and single in function are solved.

The invention relates to the field of drilling and production equipment, and provides an iron roughneck testing device which comprises an experiment table, a mouse hole tool and a mud blocking device, the mouse hole tool is installed on the experiment table, and the mud blocking device is slidably connected with the experiment table and located on the periphery of the experiment table; the experiment table comprises a base, a hoisting device and a mud pit, the mud pit is installed on the base, the mud pit and the hoisting device are both installed on the base, the upper end of the hoisting device is located above the mud pit, and the mousehole tool is installed on the mud pit; the problem that in-plant test or debugging in the prior art cannot fully simulate actual wellhead working conditions for test verification is solved. The device has the technical effects that not only can conventional working condition tests such as conventional wellhead screwing-on and screwing-off tests and torque tests be carried out, but also unconventional actual wellhead working condition tests such as mouse hole working conditions and slurry jet environment working conditions can be carried out, the coverage rate of iron roughneck product function performance tests is higher, and the reliability of iron roughneck is further guaranteed.

The invention relates to the technical field of iron roughneck devices, and discloses an electric iron roughneck which comprises an executing mechanism and a power mechanism, the power mechanism comprises a motor pump set, a control valve set and a pressurization oil tank, the motor pump set is connected with the control valve set, and the control valve set is connected with the executing mechanism to control the executing mechanism to move. The motor pump set, the control valve set and the executing mechanism form a closed oil way, and the pressurizing oil tank is used for supplementing oil to the closed oil way. According to the electric iron roughneck, the power mechanism is integrated on the electric iron roughneck, the executing mechanism can be driven to execute different actions without an external oil source, the arrangement process of the electric iron roughneck is simplified, operation is easy, and then the operation efficiency of the electric iron roughneck is improved.

The invention discloses an iron roughneck tubular column centering mechanism and an automatic screwing-on and screwing-off device and method, and belongs to the technical field of oil field automatic under-pressure operation screwing-on and screwing-off. The mechanism comprises a U-shaped shell, two clamping blocks and a centering clamping mechanism, the centering clamping mechanism comprises two clamping arms, a clamping oil cylinder, a middle connecting rod and a centering limiting block, a limiting groove is formed in the upper surface or the lower surface of the middle of the middle connecting rod, the centering limiting block is inserted into the limiting groove, and the other end of the centering limiting block is fixed to the U-shaped shell. When the tubular column is clamped, the clamping oil cylinder drives the two clamping blocks to synchronously push inwards, the middle connecting rod floats front and back under the action of the centering limiting block, and the centering clamping effect is guaranteed. The device comprises a fixed base, a sliding frame assembly, a back-up tong assembly, a buckle breaking tong assembly, a main tong assembly and a main tong hanging bracket assembly. The centering problem is ingeniously solved through the centering limiting block, and the clamping, centering and positioning effects are guaranteed; the structure is simple and compact, the occupied space is small, the safety is high, and the petroleum under-pressure operation pipe conveying efficiency is remarkably improved.