351 results about "Sucker rod" patented technology

The derrick type continuous oil pipe integrated sidetrack drilling operation device is provided with a base, a derrick, an injection head installation support, an injection head, a lifting oil cylinder, a hydraulic clamp and a remote operation room, one side of the derrick is fully opened, the derrick and the base are both of a lightweight rigid structure, and the injection head is installed at the top of the derrick for remote control. After the base is arranged at a wellhead and is unfolded and installed, one side of the base is connected with the lifting oil cylinder, the other side of the base is in butt joint with the ramp and the pipe rack, the derrick is rapidly erected through the lifting oil cylinder, and after the injection head is hoisted to the top of the derrick, the injection head is rapidly installed and subjected to alignment adjustment through the injection head installation support and the adjusting structure. Meanwhile, the tool rod and the elevator are arranged at the injection head, the tool rod is pulled and placed through the injection head, an oil pipe column and a sucker rod can be independently lifted or lowered, the oil pipe column and the sucker rod are pushed into a ramp from one side of an opening of a derrick, integrated sidetrack drilling operation of the coiled tubing is achieved, and sidetrack drilling efficiency and operation safety of the coiled tubing are remarkably improved.

The invention discloses a combined sucker rod centralizer, and relates to the technical field of sucker rod centralizers, the combined sucker rod centralizer comprises an upper fixing sleeve and a centralizing assembly, the upper fixing sleeve is connected to the outer side of a sucker rod body in a penetrating and sleeving manner, the lower side of the upper fixing sleeve is connected with an upper adjusting mechanism capable of moving up and down, and the upper adjusting mechanism is connected with the upper side of the centralizing assembly. According to the combined sucker rod centralizer, the rotation effect of the centralizing assembly is automatically achieved through the inertia force of up-down movement of a sucker rod and rolling fit of the slope blocks and the balls, so that the contact points of the steel balls and the inner wall of an oil pipe are continuously and dynamically changed, and the situation that local concentrated abrasion is caused due to the fact that the contact points of a traditional centralizer are fixed is avoided; and through high-low position automatic matching of the first inclined plane block and the second inclined plane block, bidirectional stable supporting of the upper guide rod, the lower guide rod and the centralizing assembly can be achieved, the situation that the centralizing assembly is unstable due to inertia offset is avoided, and the operation stability of the device is guaranteed.

The invention belongs to the technical field of oil field downhole operation, and discloses a sucker rod oil scraping anti-pollution device which comprises a Christmas tree upper flange, a Christmas tree lower flange, a Christmas tree upper flange, a Christmas tree lower flange and a Christmas tree lower flange, mounting a jackscrew which is connected to the upper flange of the Christmas tree; the oil collecting barrel is connected with the upper flange of the Christmas tree through the mounting jackscrew; the oil scraping assembly comprises an installation disc, a triangular cover, an octagonal beef tendon oil scraping disc, beef tendon strips, a split type elastic contraction oil scraping rubber core and an annular rubber ring, gas pressure generated when a sucker rod moves can be effectively absorbed and buffered, gas in a cavity is stably guided out, the phenomenon of crude oil splashing is eradicated, meanwhile, large-area oil dirt stripping is achieved through the flexible beef tendon strips, and the oil scraping efficiency is improved. The upper layer split type elastic contraction oil scraping rubber core is matched with a dynamic pressing structure to scrape residual oil films, the oil scraping efficiency and the sealing performance are remarkably improved through double protection, the problem of pollution caused by oil contamination leakage is solved, and a reliable guarantee is provided for clean production of an oil field.

The invention relates to the technical field of polishing devices, in particular to a petroleum sucker rod body polisher device and method in the intelligent manufacturing equipment industry. Comprising a mounting frame and a servo motor, the output shaft end of the servo motor is provided with a horizontal variable-stroke part, the horizontal variable-stroke part is connected with a horizontal sliding frame which is variable in stroke and horizontally reciprocates, the horizontal sliding frame is connected with a vertical pressurizing frame in a sliding mode, and a vertical variable-stroke part which drives the vertical pressurizing frame to reciprocate in a variable-stroke mode is fixedly mounted on the horizontal sliding frame. Two winding rollers are rotationally mounted on the vertical pressurizing frame, a reciprocating driving system for driving the two winding rollers to synchronously rotate in a reciprocating manner is arranged on the vertical pressurizing frame, a polishing abrasive belt is wound between the two winding rollers, and a liquid distribution cleaning system for synchronously and rotationally brushing the polishing abrasive belt and cooling the polishing abrasive belt in a water cooling manner is arranged on the vertical pressurizing frame. By means of the linkage design of the horizontal stroke changing piece and the vertical stroke changing piece, the grinding limitation of fixed pressure and fixed stroke in the prior art is broken through, and a cooperative control mechanism dynamically matched with the stroke and the pressure is constructed.

The invention relates to the technical field of oil extraction equipment, in particular to a wellhead Christmas tree sealing device capable of preventing leakage. A flange of a bottom pipe opening of the leakage-proof pipe is connected with a wellhead flange, the top of the leakage-proof pipe is detachably connected with a dust cover, and a penetrating-out opening for a sucker rod to penetrate out is formed in the dust cover. A sealing structure connected to the outer wall of the sucker rod in a sealed mode is fixed into the leakage-proof pipe. A pressure relief structure is arranged on the side portion of the leakage-proof pipe and located below the sealing structure. A cleaning structure used for scraping off oil on the outer wall of the sucker rod is connected to the upper portion of the sealing structure. In the anti-leakage device, the sealing structure in the anti-leakage pipe is tightly connected to the outer wall of the sucker rod, so that oil leakage can be effectively prevented; the pressure relief structure arranged on the side portion of the leakage-proof pipe is located below the sealing structure, when the pressure in the well rises suddenly, the pressure relief piston compresses the control pressure spring under the pressure effect, the pressure relief opening is opened, redundant pressure and petroleum are discharged to the pressure relief storage tank through the oil discharging pipe, and automatic pressure relief is achieved.

A rod head armoring protection surface organic coating type anticorrosion sucker rod armoring processing device relates to the technical field of metal surface coating and comprises a forming platform which is formed by arranging a first transverse platform, a longitudinal platform and a second transverse platform in a Z shape and sequentially welding the first transverse platform, the longitudinal platform and the second transverse platform. A continuous conveying assembly, a surface cleaning unit, an anti-corrosion spraying unit, an armoring spraying unit and a curing and shaping unit are arranged on the forming platform. The continuous conveying assembly comprises a first transverse conveying unit, a longitudinal conveying unit and a second transverse conveying unit. The problems that the production efficiency and the automation degree are low, the quality of a protective layer is poor, a complex structure is difficult to protect, and the connection of production processes is insufficient in the anti-corrosion treatment process of the sucker rod head in the traditional technology are solved.

This disclosure includes a sucker rod string, a tubing protector, and a tool joint with a polycrystalline diamond element positioned thereon for mating with other surfaces in downhole applications. The polycrystalline diamond element can be positioned on the sucker rod guide, sucker rod connector, tubing protector, and tool joint.

The invention discloses a design method of an anti-corrosion and wear-resistant reinforced sucker rod, and relates to the technical field of oil exploitation equipment. According to the method, chemical components of the sucker rod are optimized, alloy elements such as chromium, nickel and molybdenum and microalloy elements such as niobium, titanium and vanadium are added, meanwhile, the surface treatment processes of boriding, nickel-phosphorus alloy plating and polyurethane elastomer coating are adopted, all links of the manufacturing process are optimized, and the manufacturing process is optimized. The corrosion resistance, the wear resistance and the comprehensive mechanical property of the sucker rod are obviously improved. Tests prove that the sucker rod adopting the design method can effectively deal with a complex and severe underground environment, the service life is prolonged, the oil extraction operation cost of an oil field is reduced, and the sucker rod has a wide application prospect.

The invention provides an energy-saving oil pumping unit, which belongs to the technical field of oil exploitation equipment and comprises a support frame, a winding wheel body, a motor, a first traction piece, a second traction piece, an oil pumping rod and an adjustable counterweight assembly. The winding wheel body is rotationally arranged on the supporting frame; the motor is arranged on the supporting frame, is in transmission connection with the winding wheel body and is used for driving the winding wheel body to rotate; the first traction piece and the second traction piece are respectively wound on two opposite sides of the winding wheel body; the sucker rod is connected to the free end of the first traction piece; the adjustable counterweight assembly is connected to the free end of the second traction piece and used for balancing the total gravity of the sucker rod and the sucker rod underground load by adjusting the gravity of the counterweight of the adjustable counterweight assembly. According to the energy-saving oil pumping unit, the total gravity of the oil pumping rod and the load of the oil pumping rod is matched in real time, so that the driving motor only needs to provide a small amount of power for overcoming the friction force of the system to complete lifting operation, and the energy consumption in the lifting process of the oil pumping unit is reduced.

This invention belongs to the technical field of oil extraction equipment, specifically a tower-type intelligent control long-stroke beamless pumping unit, including a tower and a flexible rod pumping mechanism mounted on the tower; it also includes a plunger self-weight adjustment mechanism, which is used to adjust the weight of the pump plunger. By setting up the plunger self-weight adjustment mechanism, during the descent of the pump plunger, the total weight of the counterweight tube, sucker rod string, and pump plunger increases through the delivery of counterweight oil, thereby forcing the pump plunger to descend at a faster rate in the tubing. Before the pump plunger rises, the counterweight oil in the counterweight tube, sucker rod string, and pump plunger is discharged, thereby reducing the total weight of the counterweight tube, sucker rod string, and pump plunger, and thus reducing the pressure exerted by the counterweight tube, sucker rod string, and pump plunger on the drive components.

The utility model relates to the field of oilfield development, in particular to a double-hollow sucker rod heating device which comprises a heating tank, a sucker rod assembly, a stirring assembly, a heating assembly, a flow guide pipe, a threaded sleeve, a feeding hopper, a first hydraulic controller and a liquid discharging pipe. The heat conduction layer and the heat preservation and insulation layer are arranged in the inner pipe and the outer pipe of the sucker rod respectively, heat transfer between a heat carrier and the sucker rod can be enhanced through the heat conduction layer, it is ensured that heat can be efficiently transferred to the underground, heat loss of the heat carrier in the flowing process can be reduced through cooperation of the heat preservation and insulation layer, and the service life of the sucker rod is prolonged. The heating assembly capable of sensing the temperature of the heating carrier in the heating device in real time is arranged, and the heating temperature can be flexibly adjusted according to the actual temperature change of the heat carrier liquid to achieve rapid temperature rise of the heat carrier liquid; and the stirring assembly is arranged, so that the heat carrier liquid flowing back into the heating device can be quickly and uniformly stirred in a rotary stirring mode to accelerate temperature rise.

The utility model discloses a kind of scrapped sucker rod remanufacturing devices, comprising: feeding table, the inner wall of feeding table is connected with feeding roller by bearing rotation, and feeding roller is equipped with several;Feeding positioning assembly, including first guide rail frame, the inner wall of first guide rail frame is connected with positioning slide by sliding, the inner wall of positioning slide is connected with positioning roller by bearing rotation, and positioning roller and feeding roller cooperate for feeding;Polishing rust removal component, including driving wheel and detachable fixed installation steel wire wheel on the outer wall of driving wheel.The utility model can be adapted to different diameter scrapped sucker rod by the first screw of feeding positioning assembly and first hand wheel adjusting positioning roller height, the second screw of polishing rust removal component and second hand wheel can adjust steel wire wheel pressure, adapt to different corrosion degree rod body, without replacing core component can handle multiple specifications sucker rod, solve the problem of single compatibility of traditional device.

The utility model discloses a sand removing device for a directional fan of a pumping well polish rod sealer. The sand removing device comprises a fixing rod, a notch flange, a support, a transmission shaft, a fixing support, an air bellow, an impeller mechanism and a belt wheel mechanism. The air outlet of the air bellow is communicated with the interior of the polish rod sealer through a pipeline, the fixing rod is inserted into the wellhead of an oil well, after wind and sand are blown, the blade fan can be blown to rotate, the blade fan drives the transmission shaft to rotate through the transmission mechanism, the transmission shaft drives the belt wheel mechanism to rotate, the impeller mechanism in the air bellow rotates, and after the impeller mechanism rotates, the belt wheel mechanism rotates. Air is sucked from the air inlet and then is blown into the polish rod sealer through the pipeline of the air outlet, so that convection is formed between air in the polish rod sealer and external sand wind, wind is controlled by wind, external natural wind is used for manufacturing directional wind, sand grains on a polish rod, making contact with the polish rod sealer, of a pumping well of a machine are cleared away, and the polish rod sealer is cleaned away. The problem that the sucker rod is damaged due to the fact that sand blown into the sealer is solved, the filter is arranged at the air inlet, and sand is prevented from being blown into the sealer from the inside.

This invention relates to the field of wellhead operation technology and is a rod transfer device for transferring rod-like parts. It includes a first tube body, a second tube body, a triggering component, and mounting connectors. The first and second tube bodies are hinged together, and a through-passage is formed between the inner walls of the first and second tube bodies. A power component is provided between the first and second tube bodies to open and reset them around the hinge. When the power component opens, it moves the second tube body relative to the first tube body to an open state. In the open state, the lower parts of the second and first tube bodies form a slip opening at the open point that communicates with the through-passage. This invention can transport sucker rods with various end connections, such as those with couplings, rod bodies, or straightening blocks, and allow them to fall onto the sucker rod bracket of the pipeline transport platform in a rear-end aligned state, facilitating subsequent automated transport operations. It is easy to manufacture and use.

The invention relates to the technical field of oil field machinery, in particular to a sucker rod elevator. Comprising an outer cylinder and an inner cylinder, and the inner cylinder is sleeved with the outer cylinder; the thrust rod assembly comprises a thrust rod, a thrust baffle arranged at the end of the thrust rod and a thrust ejector pin. The clamping jaw driving assembly comprises a jaw seat device, a clamping jaw, a clamping jaw shell and a clamping jaw limiter, the jaw seat device is connected with the thrust cylinder, the clamping jaw is arranged on the jaw seat device, the clamping jaw shell is fixed to the inner side of the inner cylinder, the clamping jaw limiter is fixed in the clamping jaw shell and forms a limiting groove, and the clamping jaw can move along the track of the limiting groove so as to grab or release the sucker rod; a thrust baffle and a thrust ejector pin of the thrust rod assembly are matched with the sucker rod with a coupling and the sucker rod without the coupling respectively, universal grabbing can be achieved without replacing parts, operation steps are reduced, and the slipping risk is reduced. The combined structure of the outer cylinder and the inner cylinder is matched with the subsequent buffer design, so that sucker rod damage caused by rigid butt joint is avoided, and operation continuity is guaranteed.

The utility model discloses a clockwise rotation sucker rod anti-falling centralizer which comprises a centralizing assembly used for centralizing and antifriction of a sucker rod and a connecting assembly used for being in butt joint with a sucker rod string, the connecting assembly is arranged on the centralizing assembly, and an anti-falling assembly used for one-way locking is arranged in the connecting assembly. An outer sleeve used for wrapping the anti-disengaging assembly is arranged between the centralizing assembly and the connecting assembly. By means of the linkage design of the anti-disengaging assembly and the upper spiral angle teeth, the functions that the sucker rod is clamped and prevented from disengaging during clockwise rotation and is loosened and convenient to install during anticlockwise rotation are achieved, and the technical problem that in the prior art, the sucker rod is prone to disengaging is solved; meanwhile, when the oil rod reciprocates up and down, the anti-falling centralizer is driven through the pressure of the liquid amount, eccentric wear of the oil rod is prevented through rotation of the anti-falling centralizer, and oil field production equipment such as the oil rod and an oil pipe is protected; underground accidents caused by breakage and falling of the oil rod are avoided, the maintenance cost is saved, the productivity of an oil well is improved, and the labor intensity of workers is reduced.

The invention relates to the technical field of sucker rods, and provides a high-pressure-resistant sucker rod with a locking structure, the high-pressure-resistant sucker rod comprises a connecting assembly and sucker rod assemblies, the sucker rod assemblies are fixedly mounted at the upper end and the lower end of the connecting assembly, and the connecting assembly comprises a rotating mechanism; elastic blocking assemblies are fixedly connected to the upper and lower ends of the periphery of the middle of the rotating mechanism, connecting mechanisms are rotatably connected to the peripheries of the upper and lower ends of the rotating mechanism, impact assemblies are fixedly connected to the sides, close to the middle of the rotating mechanism, of the connecting mechanisms, and adjusting assemblies are arranged on one sides of the impact assemblies. The balls II in the connecting seats at the upper end and the lower end rotate on the peripheries of the upper end and the lower end of the rotating seat, so that the connecting seats at the upper end and the lower end can easily rotate on the periphery of the rotating seat, and the twisting force of the sucker rod assembly is released; the situation that the sucker rod assembly is twisted due to the change of the direction of force acting on the sucker rod assembly in the oil pumping process, and connection between the sucker rod assembly and the connecting assembly is loosened is avoided.

A conveyor for a sucker rod pump, for deployment downhole within a passage defined by an inner surface of a reservoir fluid conductor that is emplaced within a wellbore extending into a subterranean formation, for effecting production of reservoir fluids, comprising. The conveyor includes a rod configuration, and a guide configuration. The guide configuration is coupled to the rod configuration, and is defined by at least one protuberance. The protuberance defines an air foil shape.

The invention relates to the technical field of sucker rod production, and discloses a sucker rod anticorrosive coating spraying device which comprises an air duct surrounding a sucker rod in a clearance mode and allowing the sucker rod to penetrate through, thermal spraying gun heads spraying the sucker rod symmetrically penetrate through the two side walls of the air duct, and airflow output assemblies penetrate through the upper wall and the lower wall of the air duct. Each airflow output assembly comprises a first air inlet pipe penetrating through the wall of the air duct and an air distribution box connected to the inner end of the first air inlet pipe, the air outlet direction of the air distribution box is vertical and corresponds to the two sides of the sucker rod, and the four airflow output assemblies are vertically symmetrical; the airflow output assembly outputs airflow, so that the moving paths of the thermal spraying materials at the upper and lower ends are bent towards the sucker rod and are respectively attached to the upper and lower sides of the sucker rod; the double-side thermal spraying gun heads are used for oppositely spraying the two sides of the sucker rod which linearly penetrates through the double-side thermal spraying gun heads, and the airflow output assembly is used for changing spraying material spraying paths on the edges of the upper end and the lower end, so that originally lost spraying materials are focused on the upper side and the lower side of the sucker rod, and the utilization rate of the spraying materials is increased.

This invention relates to a combined downhole pump, comprising a multi-section pump assembly. Each pump assembly includes a stator and a rotor. A positioner connects each pump assembly section. The positioner includes a housing assembly and a sucker assembly, with both ends of the sucker assembly connected to the rotor. A casing is also provided between the outer side of a portion of the sucker assembly and the inner side of the housing assembly. A bearing assembly and a sealing assembly are respectively provided on the outer side of the casing. An oil passage ring is also provided on the outer side of the sucker assembly, with at least one oil passage hole. An adjuster is also provided at the end of the oil passage ring furthest from the casing. By providing the positioner, not only can the connection between each pump assembly section be achieved, but an adjuster is also provided in the housing assembly. The adjuster consists of a centralizing joint and a bearing ring. By providing a conical surface on the bearing ring, when the sucker rod connected to the centralizing joint swings, the guiding effect of the conical surface ensures that the centralizing joint and the bearing ring are coaxial, thereby ensuring that the sucker rod, centralizing joint, and bearing ring are coaxially arranged.

The present application relates to a kind of methods for manufacturing full-coated sucker rod, step one, sucker rod matrix is manufactured by machining method, the middle part of the finished sucker rod matrix is rod body, two end parts are rod head and two ends are symmetrically arranged, the rod head is from the end of sucker rod matrix towards rod body in turn threaded joint, unloading groove, shoulder, wrench square and flange, the outer surface of the rod body is covered with anticorrosive non-metal material layer;Step two, metal sleeve is made by machining method, and the finished metal sleeve is cylindrical;Step three, by extrusion, the metal sleeve is tightly attached to the outer surface of the shoulder, wrench square and flange, and completely covers the shoulder, wrench square and flange, and the anticorrosive non-metal material layer is covered, and the metal sleeve outer surface and the corresponding position of the shoulder, wrench square and flange form the same shape as the shape of the outer surface of the shoulder, wrench square and flange.The present application can reduce the cost and workload of machining, and facilitate on-site operation, improve work efficiency.

This invention belongs to the field of oilfield downhole operation technology and discloses a sucker rod oil scraping and anti-pollution device, including: a pre-works flange for sealing and covering the sucker rod; a mounting screw connected to the pre-works flange; and an oil collection tank connected to the pre-works flange via the mounting screw. The oil scraping assembly includes: a mounting plate, a triangular cover, an octagonal elastic scraping disc, elastic strips, a segmented elastic contraction scraping core, and an annular rubber ring. It can effectively absorb and buffer the gas pressure generated during sucker rod movement, smoothly discharge the gas inside the cavity, and prevent crude oil splashing. Simultaneously, the flexible elastic strips achieve large-area oil removal, and the upper segmented elastic contraction scraping core, combined with a dynamic pressing structure, scrapes away residual oil film. This dual protection significantly improves scraping efficiency and sealing performance, solves the problem of oil leakage and pollution, and provides a reliable guarantee for clean production in oilfields.

The present application provides a kind of shale gas reservoir methane combustion fracturing structure, it includes: stabilizing component, conveying component and packer component, stabilizing component is made of wellbore casing, and bottom packer and top packer are respectively fixedly installed in the inside of both ends of wellbore casing, conveying component is made of sucker rod string, and jet mechanism is fixedly installed in the inside of sucker rod string, packer component is fixedly installed to the inner wall of wellbore casing, and guide column is arranged in the inside of packer component.This application realizes the conveying of fuel and combustion improver in the inside of wellbore casing by using sucker rod string, and realizes the filling of fuel by using conveying component in sucker rod string, realizes the conveying of high-pressure gas by the cooperation of sand blasting pipe and air inlet pipe, realizes the storage of solid fuel by the cooperation of fracture, realizes the sequential conveying of fuel and combustion improver by packer component, and realizes the automatic opening of packer component by using the gas pressure generated during conveying, can realize the mixing of gas after sequential conveying in well, and can also improve the safety performance of combustion operation.

The application discloses a sand jam prevention screw rod pump for an oilfield production well and a well jam releasing method after well jam, and belongs to the oilfield production field. The sand jam prevention screw rod pump is provided with a hollow rod, the top end of the hollow rod is connected with a hollow rod plug through a ground driving device, and the bottom end of the hollow rod is connected with a screw rod pump hollow rotor through a hollow rod inner swivel joint. A tubing is arranged outside the hollow rod, and a sand jam prevention joint is arranged between the tubing and the hollow rod. The outer side of the screw rod pump hollow rotor is provided with a screw rod pump stator, and the lower side of the screw rod pump is provided with a tubing anchor. The application can realize the staged sedimentation of sand carried by liquid in the tubing when the well is stopped, and can avoid the sticking of the pumping rod.

Systems and methods treat sucker rods in a machine through a multi-step process. Initially, sucker rods are cleaned before being conditioned. The conditioning process involves using a defined type and a defined size of media, applied at a first intensity to the rods using first media accelerators (first wheels with a specific diameter and rotational speed, and / or imparting a certain amount of media). The conditioned surfaces are then shot peened at a higher intensity using second media accelerators, which can have larger diameters, faster rotational speeds, and / or can impart a greater amount of media. Both the conditioning and shot peening processes involve reclaiming the media for reuse.

The present application relates to the technical field of oil and gas exploitation, and particularly relates to a heat pump circulation viscosity reduction device based on center pipe closed heat exchange and a use method. The technical scheme is that a center pipe heat exchange unit is located in a production oil pipe, and a ground circulation unit is located at one side of a wellhead device; a hollow sucker rod column of the center pipe heat exchange unit is provided with an inner center pipe, a bottom of the inner center pipe is provided with a center pipe bottom head, and a pipe wall of an upper side is provided with more than one center pipe bottom side opening; the beneficial effects are that heat exchange working medium heated by a heat pump is lowered along the inner center pipe to the hollow sucker rod column in a wellbore, and then is raised to a near ground position along the center pipe bottom side opening between the inner center pipe and the hollow sucker rod column, closed heat exchange prevents blockage and circulation, energy consumption is greatly reduced by using the heat pump technology and the geothermal energy, safety is improved, the function of preventing blockage and increasing production is effectively realized, and the number of workover operations is reduced.

The invention relates to the technical field of laser cutting, in particular to a sucker rod machining auxiliary device which comprises a main machine, a feeding frame, a conveying frame and a discharging conveying line. A sucker rod is pushed to a lower roller through a feeding mechanism, then an adjusting mechanism is controlled to drive a middle roller to move downwards, and the sucker rod is clamped between the lower roller and the middle roller; the upper chain wheel driving mechanism and the lower chain wheel driving mechanism can be controlled to start, the sucker rod is conveyed into the lower rotary clamping mechanism to be subjected to laser cutting, in the downward moving process of the middle roller, the positioning rod can be driven to move upwards at the same time, at the moment, the feeding mechanism can be controlled again to operate, the sucker rod is pushed to the middle roller, and then the middle roller is controlled to move upwards to reset. The sucker rods are clamped between the middle roller and the upper roller, then after laser cutting of the lower sucker rod is completed, the lower chain wheel driving mechanism is controlled to be started, the sucker rods are conveyed to the upper rotary clamping mechanism to be subjected to laser cutting, and the steps are repeated, so that alternate cutting of the two sets of sucker rods is achieved.

The blowout prevention device comprises a sealing box packing pressing cap mounted on an oil pumping unit, a mounting seat is connected to the sealing box packing pressing cap, a valve seat is mounted in the mounting seat and located above the sealing box packing pressing cap, a sucker rod is mounted in the valve seat, and the sealing box packing pressing cap is connected to the sealing box packing pressing cap. The sucker rod penetrates through the sealing box packing pressing cap and extends into a well; a first limiting piece and a second limiting piece are mounted on the mounting seat, and one end of the first limiting piece is pressed on the top of the second limiting piece; a sealing ball is placed in the mounting seat, a pushing head is mounted in the mounting seat, a pushing assembly is connected to the pushing head and fixed in the mounting seat, a limiting boss is arranged on the pushing head, and the limiting boss is attached to the bottom of the second limiting part. According to the device, effective prevention and response to breakage and falling of the sucker rod are achieved, the safety and efficiency of oil field operation are remarkably improved, a wellhead can be quickly closed at the critical moment, and blowout accidents are prevented.