52 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 utility model relates to the technical field of oil and gas drilling and production equipment, in particular to a continuous rotary iron roughneck under-pressure operation system. The continuously-rotating iron roughneck comprises a main tong, the main tong is rotationally connected with a back-up tong through a rotating mechanism, the back-up tong is located below the main tong, the main tong is installed on a first shell, the first shell is elastically connected with the rotating mechanism through at least four elastic assemblies, the back-up tong is installed on a second shell, and the second shell is connected with the rotating mechanism through at least four elastic assemblies. And the second shell is fixedly connected with the slewing mechanism. The elastic assembly of the iron roughneck can compensate the distance change caused by tightening or loosening of a pipe column screw thread, and the elastic assembly can adapt to the angle deviation in the horizontal plane to a certain degree and help to better align a pipe column; according to the iron roughneck, various problems caused by rigid connection of the main clamp and the slewing mechanism are ingeniously solved, the adaptability and the operation efficiency of equipment are improved, the risk of damage to a tubular column is reduced, and the safety and the reliability of workover treatment under pressure are improved.

The invention provides a drilling method and system which are applied to a drilling mechanism comprising a drill tower device and a conveying device, and the drill tower device is provided with a first power head, a second power head, an iron roughneck and a grabbing device. The drilling method comprises the steps that the drilling mode of the drilling mechanism is obtained; the drilling tool to be connected is conveyed to a first preset position or a second preset position based on the drilling mode; when it is obtained that the to-be-connected drilling tool is located at the first preset position, a grabbing device and a first power head are driven to be sequentially in butt joint with the to-be-connected drilling tool, then an iron roughneck is driven to centralize the to-be-connected drilling tool and lock the to-be-connected drilling tool and a previous drilling tool, and after locking, the first power head is driven to drill downwards; and when it is obtained that the to-be-connected drilling tool is located at a second preset position, the first power head is driven to move to be in butt joint with the to-be-connected drilling tool, then the first power head is moved to make contact with the previous drilling tool and is locked, and after locking, the first power head and the second power head are driven to drill downwards. And different stratum conditions and engineering project requirements are met.

The invention relates to the technical field of petroleum drilling, in particular to a casing height and size identification method based on machine vision, which comprises the following steps: receiving a detection instruction sent by an iron roughneck, and acquiring an original image of the work of the casing iron roughneck according to the detection instruction; performing image preprocessing on the original working image of the sleeve iron roughneck to obtain a processed image; inputting the processed image into a sleeve detection model which is trained in advance to obtain first sleeve feature information; the cannula detection model is a YOLOv8 model in which a small target detection layer is added into a neck network; inputting the first sleeve feature information into a preset edge detection algorithm to obtain second sleeve feature information; and according to the second sleeve feature information, obtaining final sleeve feature information by using data calibration. By means of the method, the accuracy and efficiency of the casing running process in drilling operation can be improved, and errors and safety risks caused by manual measurement are reduced.

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 invention relates to the technical field of oil exploitation, in particular to an iron roughneck coupling height identification method and system, and the method comprises the steps: inputting a received first original image into a drilling tool detection model through an identification module, and obtaining the actual heights of a male buckle and a female buckle; the iron roughneck central control module generates a control instruction according to the actual height of the female buckle and the second corresponding relation, sends the control instruction to the iron roughneck, and obtains the actual height of the calipers according to the detected lifting height of the iron roughneck and the initial height of the calipers; the identification module judges whether the calipers of the iron roughneck are in place or not according to the actual height of the calipers, the actual height of the male buckle, the actual height of the female buckle and preset judgment logic; if not in place, a lifting or descending instruction is given to the iron roughneck center control module according to the actual situation, and then detection is repeated until in place. The device has the beneficial effects that the operation frequency of workers in a dangerous environment is reduced through intelligent caliper position adjustment and an automatic correction mechanism, the safety risk in operation is reduced, and the labor cost is reduced.

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 discloses an automatic drilling system of a super single drilling machine, and relates to the technical field of oil field drilling and repairing operation equipment. The drilling machine is matched with automatic tools such as a hydraulic drill rod box, a power catwalk, a traveling and hoisting integrated top drive, a hydraulic elevator, a translation rail type iron roughneck and a pneumatic slip. The driller integrated control system is used for controlling cooperative work among all the automatic devices, coordinating parallel work of all the tools in the working process as much as possible, guaranteeing the efficiency of the whole working process and guaranteeing the regional safety of all the tools in the working space, can be divided into automatic pulling-out operation and automatic drilling-down operation, and can achieve single-driller operation.

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 invention relates to a position-adjustable mousehole device which comprises a mousehole pipe and a driving mechanism for driving the mousehole pipe to move, and the mousehole pipe is arranged beside the center of a wellhead and used for storing a 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 invention is suitable for drilling machines and workover rigs with small 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 invention provides automatic drilling equipment and a control method thereof. A drilling system comprises a rack, a first storage device and a second storage device. A drill tower is arranged on the machine frame, a mechanical arm, a first power head, a second power head and a drilling opening platform are arranged on the drill tower, the second power head is located between the first power head and the drilling opening platform, an iron roughneck is arranged on the drilling opening platform, the first storage device is used for storing a first drilling tool, and the second storage device is used for storing the first drilling tool and the second drilling tool. The first drilling tool on the second storage device is preassembled in the second drilling tool; and the second power head is detachably connected with the drill tower. According to the drilling system, flexible selection can be conducted according to the characteristics of different stratums and different engineering projects, the application range is widened, the drilling success rate is increased, and the equipment utilization rate and economic benefits are increased.

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.