1380 results about "Blowout preventer" patented technology

A technique facilitates reliable operation of a blowout preventer (BOP) system in a wide range of challenging environments. To enable dependable and rapid closing of the internal passageway of the BOP system, an electronically actuated annular closing system is employed. The annular closing system may include, for example, a packer combined with a shift mechanism actuatable to compress the packer inwardly so as to seal off the internal passageway. An electronic actuator is coupled with the shift mechanism to enable selective actuation of the shift mechanism to achieve the sealed closing of the internal passageway.

The invention discloses a blowout preventer remote automatic grease injection system based on PID control and a control method, and relates to the technical field of grease injection, and the control method comprises the following steps: an initialization stage: automatically matching the specification of a choke tube according to the diameter of a cable, and preheating sealing grease to a set temperature; in the dynamic control stage, wellhead pressure and grease injection pressure are monitored in real time, pressure errors are calculated, the flow of a grease injection pump is adjusted according to a PID algorithm, and when the cable lowering speed suddenly changes, pressure fluctuation is inhibited in advance through a differential link; and according to the safety redundancy mechanism, when the main PID controller fails, the standby PID controller is automatically switched, and emergency locking is triggered when the wellhead pressure exceeds the limit. The flow of a grease injection pump is adjusted in real time through an incremental PID algorithm and a self-adaptive adjustment method, the grease injection amount is accurately controlled, pressure fluctuation is reduced, sudden change of the cable lowering speed is predicted through a differential link, the response precision is improved, stable operation of the system is ensured through a redundant controller and an emergency locking function, PID output is corrected through a dynamic temperature-viscosity model, and the reliability of the system is improved. The system service life is prolonged.

The invention discloses a wellhead casing head, and relates to the technical field of casing heads. The wellhead casing head comprises a flange shell, a slip hanger and a locking mechanism, the slip hanger comprises supporting seats located at the bottom of the slip hanger, each supporting seat comprises a circular ring structure formed by folding two semicircular structures, a downward extending part is arranged at the lower end of each supporting seat, and at least two wedge-shaped plates radiating outwards are installed in each downward extending part through first springs. According to the wellhead casing head, the wedge-shaped plate connected by the first spring is arranged below the supporting seat of the hanger, so that a C-shaped plate is not needed for supporting, the locking mechanism can be unlocked, after the locking mechanism is unlocked, a blowout preventer set applies downward pressure to the slip hanger, a main limiting guide groove can generate large pressure on the wedge-shaped plate, and the slip hanger is prevented from falling off. Therefore, the wedge-shaped plate can stably move downwards along the interior of the main limiting guide groove, the purpose that the slip hanger stably moves downwards is achieved, and eccentricity of the slip hanger and an oil-string casing relative to the flange shell is avoided.

The invention belongs to the field of petroleum engineering, and particularly relates to an ultra-high-temperature and high-pressure blowout preventer set and control system fault diagnosis method and system fusing a deep learning model and an expert knowledge model. The invention discloses an ultrahigh-temperature and high-pressure blowout preventer group and a control system fault diagnosis method. The method comprises three steps of sensor signal data acquisition, sensor signal data fault feature extraction and fault diagnosis reasoning model establishment. An intelligent fault diagnosis system for an ultrahigh-temperature and high-pressure blowout preventer group and a control system comprises an ultrahigh-temperature and high-pressure pressure supply system, an ultrahigh-temperature and high-pressure pilot gas source system, the ultrahigh-temperature and high-pressure blowout preventer group, an ultrahigh-temperature and high-pressure electric power control system, an ultrahigh-temperature and high-pressure sensor signal data acquisition system and a state monitoring and fault alarm system.

A method includes actuating a blow-out preventer (BOP) by moving a ram using an electric motor. The method also includes capturing sensor data with one or more sensors as the BOP is electrically-actuated. The method also includes determining one or more parameters with a controller based upon the sensor data. The method also includes controlling the electric motor based upon the one or more parameters.

The invention belongs to the field of petroleum and natural gas drilling engineering, and particularly relates to an ocean fine pressure control drilling inspection device and method. A wellhead monitoring device is used for monitoring locking information of a hoop of an annular blowout preventer; the drill floor monitoring device is used for monitoring the coupling information of the drilling tool; the gas cut monitoring device is used for monitoring gas cut information in the well pipe; the pressure monitoring and automatic control system state monitoring device is used for monitoring valve information of the wellhead device; and the remote control center is used for receiving information sent by the wellhead monitoring device, the drill floor monitoring device, the gas cut monitoring device and the pressure monitoring and automatic control system state monitoring device. According to the invention, state monitoring of different processes such as a drill floor surface, a well mouth, a gas cut state, pressure monitoring and an automatic control system is realized, information interaction with a fine pressure control well drilling control center can be realized, whole-process monitoring of an equipment operation process is guaranteed, safety of a fine pressure control well drilling operation process is guaranteed, and labor force is saved.

The invention relates to the technical field of blowout preventers, in particular to a shear ram blowout preventer which mainly comprises a shell, a first driving assembly and a second driving assembly which are installed on the two sides of the shell respectively, an upper shear ram and a lower shear ram which are installed at one ends of the two second driving assemblies respectively, a sealing mechanism arranged in the shell, and a protection mechanism arranged in the shell. And the protection mechanism is arranged below the upper shearing flashboard. When the drill rod is cut off by the lower cutting edge and the inclined cutting edge, the rough part at one end of the cut-off drill rod slides on the surface of the protection plate, and the cut-off drill rod is blocked by the protection plate, so that the rough part of the drill rod is not prone to being in contact with the first rubber part and the second rubber part, and the drill rod is prevented from being damaged. The sealing effect between the upper shearing flashboard and the lower shearing flashboard is guaranteed, oil gas is not prone to leakage, and the safety of the device is improved.

The invention relates to the technical field of oil production engineering, in particular to a wellhead blowout prevention device which comprises a blowout prevention shell, a left valve element, a right valve element and a driving assembly, and a mounting through hole for a polish rod to penetrate through is formed in the upper end of the blowout prevention shell. The structure is reasonable and compact, when the polish rod in the mounting through hole is not in the center, the right valve element moves leftwards, the eccentric polish rod can move into the right sealing groove along the inner wall of the guide groove, the eccentric polish rod can be centralized, then the guide part moves rightwards to make contact with the guide groove in a sealed mode, and therefore the polish rod is prevented from being blocked. And finally, the left sealing groove, the guide part and the right sealing groove are close to one another to form a vertically-through cylindrical sealing hole, the outer side of the polish rod is in sealing contact with the inner wall of the sealing hole, and therefore the effect of closing the mounting through hole is achieved, and the mounting through hole can be timely and rapidly closed through the driving assembly when leakage or steam channeling blowout happens to the polish rod. The safe operation of the wellhead blowout preventer of the oil pumping unit is ensured, and the occurrence of wellhead pollution events is reduced.

The blowout preventer hydraulic driver comprises a blowout preventer and a control system, first protective shells are fixedly arranged on the left side and the right side of the blowout preventer correspondingly, the other end of each first protective shell is in threaded connection with a first hydraulic cylinder, and a first piston is arranged in each first hydraulic cylinder; the other end of each first hydraulic cylinder is in threaded connection with a first valve cover, a second protective shell is welded to the other side of each first valve cover, a first locking rod is arranged in each second protective shell in a penetrating mode, and a balance rod is arranged at the end, close to the blowout preventer, of each first locking rod; the other end of each balance rod is in threaded connection with a first flashboard shaft, the other end of each first flashboard shaft is fixedly connected with a locking flashboard, a blind groove is formed in one side of each locking flashboard, and the problem that an existing blowout preventer is poor in driving sealing performance is solved.

The utility model relates to the technical field of gas extraction, in particular to an underground gas extraction blowout preventer, and mainly solves the technical problems that the existing gas extraction blowout preventer is high in spewing control difficulty, high in safety risk and high in sprayed slag cleaning workload. The device comprises a movable chassis, a deslagging box, a multi-way pipe, a drilling machine through pipe, a coal seam drilling pipe, a negative pressure pipe, a pressure relief buffer cover, a deslagging pipe and a pressure sensor. According to the device, gushing is detected through the pressure sensor, on-off of the negative pressure pipe and the slag discharging pipe is controlled in a feedback mode, dependence on manual experience is not needed, it can be guaranteed that gushing and corresponding equipment are started consistently, and the gushing control difficulty is greatly reduced; meanwhile, water and residual materials for slag spraying can be discharged into the slag discharging box through the slag discharging pipe in time to be collected, and the workload of slag spraying and cleaning is reduced; the device is further provided with a pressure relief buffer cover, when the pressure is too large due to gushing, buffering can be conducted through the pressure relief buffer cover, and damage to the device caused by the too large pressure is avoided.

The invention discloses a system for lowering and recovering a hydraulic pipe of an underwater blowout preventer, which comprises a winch drum, a driving assembly and a bearing seat are respectively arranged on shafts at two ends of the winch drum, the driving assembly is used for driving the winch drum to rotate, and the bearing seat is used for supporting the winch drum; a replaceable chain wheel and a hydraulic slip ring are sequentially mounted on the projecting shaft on the other side of the bearing seat, and the replaceable chain wheel is connected with a cable arrangement device through a chain; a hydraulic pipe of the underwater blowout preventer is led into the winch roller through the hydraulic sliding ring, then led to the cable arrangement device through the winch roller and finally led to the underwater blowout preventer through the cable arrangement device, and the cable arrangement device is used for enabling the hydraulic pipe to be arranged in order along the winch roller. The driving assembly is connected with a pneumatic control system which is used for controlling the driving assembly to drive the winch drum. According to the system, hydraulic pipes with different diameters can be automatically collected and released, the heat dissipation effect is good in the collecting and releasing process, and serious heating of the hydraulic pipes cannot be caused.

The utility model discloses a drilling blowout preventer for coal mine water exploration and drainage, and relates to the technical field of coal mine water exploration and drainage. The device comprises a shell, a blowout prevention assembly is arranged at the bottom of the shell, a lifting seat is arranged in the shell, a motor is fixedly connected to the top of the lifting seat, the blowout prevention assembly comprises a protective cover, a sliding hole is formed in the center axis of the top of the protective cover, and a rotating rod is connected to the inner wall of the sliding hole in a sliding mode. The blowout prevention assembly is arranged, specifically, sprayed water flow can make contact with the first buffering ring and the second buffering ring, the two-time buffering effect is achieved, at the moment, the water flow flows in an S-shaped mode, along with continuous rising of the water flow, the water flow flows to the position above the intercepting ring through the intercepting ring, and at the moment, the impact force of the water flow is greatly weakened; and the water flow on the intercepting ring flows out through the water outlet, so that the spraying condition is avoided, and the damage to surrounding equipment and workers caused by the impact of the water flow is avoided.

The invention relates to the technical field of wellhead sealing, in particular to an automatic packing sealing and self-tightening system which comprises a left valve element, a right valve element, a first driving assembly, a sealing packing, a second driving assembly and a cross-shaped sealing shell. The structure is reasonable and compact, when the polish rod in the penetrating hole is not in the center, the right valve element moves leftwards, the eccentric polish rod can move into the right sealing groove along the inner wall of the guide groove, the eccentric polish rod is centralized, then the guide part moves rightwards to make contact with the guide groove in a sealed mode, and therefore the polish rod in the penetrating hole can be straightened. And finally, the outer side of the polished rod is in sealed contact with the inner wall of the sealing hole, so that the effect of closing the penetrating hole is achieved, and when the sealing packing leaks in the field, the second driving assembly presses the sealing packing through the pressing sleeve after working, so that continuous leakage of the sealing packing is prevented and stopped; when the polish rod leaks or blows out through steam channeling, the penetrating hole can be timely and rapidly closed through the first driving assembly and the second driving assembly, safe operation of the wellhead blowout preventer of the oil pumping unit is guaranteed, and wellhead pollution accidents are reduced.

Systems and methods presented herein enable blowout preventer soak testing. In particular, the systems and methods presented herein are configured to receive operational data in substantially real-time from equipment that is located at a worksite and that is being monitored by the real-time operations center and / or by one or more auxiliary devices in proximity of the equipment, to perform data analytics remotely on the operational data during operation of the equipment, wherein the data analytics relate to soak testing of a blowout preventer, and to provide one or more graphical user interfaces to one or more computing devices, wherein the one or more graphical user interfaces illustrate results of the soak testing.

The double tension protection winch for the underwater blowout preventer comprises a rack, a roller is installed on the rack, a plurality of sets of tension devices are evenly distributed and fixed to one end of the roller, and a large gear ring is clamped by the other ends of the multiple sets of tension devices; a motor is fixed to the position, close to the large gear ring, of the rack, and a small gear is arranged on an output shaft of the motor and meshed with the large gear ring. Arc-shaped frames are welded to the positions, at the two ends of the roller, of the rack respectively, cable arrangement supports are fixed to the arc-shaped frames through bolts a, a lead screw is installed between the two cable arrangement supports in the axial direction of the roller, and a lead screw chain wheel is arranged on the lead screw; the rack is provided with a brake disc brake device close to the large gear ring; and the hydraulic control system is respectively connected with the motor, the tension device and the brake disc brake device. According to the double tension protection winch for the underwater blowout preventer, the tension device and the hydraulic control system are arranged for double tension protection, an umbilical cable is prevented from being snapped, the cable arrangement device is designed to be in a rotatable mode, and the universality of the winch is improved.

A system and a method for controlling a subsea blowout preventer stack with a subsea well control system having sensors and a well control programmable logic controller. The sensors are coupled to the subsea blowout preventer stack and a subsea blowout preventer control system. The subsea blowout preventer control system operates the subsea blowout preventer stack. The sensors sense a condition of the subsea blowout preventer stack and the subsea blowout preventer control system and transmit a signal representing a value of the condition to the well control programmable logic controller. The well control programmable logic controller receives the signal from the sensors, compares the value to a preset value, and in response to the value greater than or equal to the preset value, and transmits a command signal to the subsea blowout preventer control system to seal a fluid flow through the subsea blowout preventer stack.

The invention relates to the technical field of well drilling well control processes, in particular to a well sealing perfecting and adjusting device and a pressure control well drilling empty and measuring working condition wellhead sealing method. The sealing device comprises a sealer and a rotary blowout preventer, the lower end of the sealer is connected with the rotary blowout preventer, the sealer and the rotary blowout preventer are sealed through a rotary blowout preventer sealing piece, and a rotary blowout preventer hoop hydraulic cylinder is installed on the side face of the upper end of the rotary blowout preventer. The sealer comprises a shell, a rubber core is arranged on the inner side of the upper portion of the shell, a sealer inner cavity is formed in the inner side of the rubber core, the lower portion of the rubber core is connected with a hydraulic cylinder mechanism, and the shell and the sealer inner cavity are sealed through a shell sealing piece. According to the sealing device for perfecting and adjusting the well and the wellhead sealing method for the pressure-controlled drilling empty and measuring working conditions, the technical defects of a pressure-controlled drilling technology under the empty and measuring working conditions can be overcome, the pressure-controlled technology under the empty and measuring working conditions can be further achieved, and the drilling cost is saved.

The invention discloses an underwater wellhead angle adjusting tool and a using method thereof.The tool comprises a connecting disc, a connecting cylinder, a hydraulic cylinder and a hydraulic cylinder piston, the connecting cylinder is arranged below the connecting disc, the connecting disc is connected with a high-pressure wellhead feeding tool through bolts, and the high-pressure wellhead feeding tool is connected with a high-pressure wellhead; a hydraulic cylinder shell and a hydraulic cylinder piston of a hydraulic cylinder are arranged on the outer side of the connecting cylinder in a sleeved mode, the hydraulic cylinder piston moves downwards to drive a downward locking lining of the high-pressure well mouth to move downwards, the downward locking lining opens a locking ring of the high-pressure well mouth, and the high-pressure well mouth and the low-pressure well mouth are locked. According to the underwater wellhead angle adjusting tool, an angle-adjustable high-pressure wellhead is vertically installed on an inclined low-pressure wellhead, a hydraulic cylinder piston is controlled to move downwards through hydraulic drive, a downward locking bush is forced to open a locking ring, and the angle-adjustable high-pressure wellhead and the low-pressure wellhead are locked; hydraulic driving is achieved, and operation is easy; and well deviation is reduced, and installation of service tools, blowout preventers and Christmas trees is facilitated.

The invention belongs to the technical field of oil and gas drilling well control equipment, and particularly relates to a ram blowout preventer state confirmation method with a locking indication window, which comprises the following steps: arranging a transparent observation window on a blowout preventer shell, and calibrating the alignment position of the end face of a locking shaft and an inner side reference scribed line; after the locking action is executed, the alignment state is confirmed through multi-angle visual observation; a switchable auxiliary light source is integrated to eliminate visual interference; an industrial camera is used for collecting images, displacement deviation is recognized through an edge detection algorithm, and an alarm is given if the displacement deviation exceeds the limit; and generating an encrypted digital report containing a timestamp and equipment information, uploading the encrypted digital report to a monitoring platform, and supporting real-time check and electronic signature of a mobile terminal. Through three layers of mechanisms of standardized vision-mechanical mapping, optical enhancement and digital perception, high-reliability, high-compatibility and traceable locking state confirmation is realized.

The present application relates to a pressure-operating machine and a conversion method that can be converted between the Additive and American installation modes, belonging to the technical field of pressure-operating machines, including a pressure-operating machine, the pressure-operating machine includes a bracket assembly, a lifting part, a slip device, a well control part, and a hydraulic control part. The slip device includes a fixed slip group and a movable slip group. The fixed slip group includes a movable anti-top slip, a fixed anti-top slip, a fixed load-bearing slip and an active turntable. The active turntable includes a turntable and an upper seat ring, and the movable slip group is connected to the turntable; the well control part includes an annular blowout preventer and a working blowout preventer, and the annular blowout preventer is connected to the fixed load-bearing slip, including a righting column, which is used to be installed between the movable anti-top slip and the lower load-bearing plate, and the fixed anti-top slip is arranged below the lower load-bearing plate to convert from a pressure-operating machine to an American pressure-operating machine. The present application has the effect of reducing the investment cost of oil production equipment.

The utility model discloses a cable blowout preventer for well logging, which comprises a wellhead crossover flange, a pumping tee joint, a blowout preventer, a blowout prevention pipe and a grease injection sealing control head which are sequentially connected from bottom to top, and further comprises an oil injection blowout prevention joint which is arranged between the blowout prevention pipe and the grease injection sealing control head. A cavity is formed in the oil injection blowout prevention connector, and sealing oil is arranged in the cavity. The grease injection blowout prevention connector is arranged, an isolation area is formed between rising gas and the packing in the grease injection sealing control head, the gas can be prevented from making direct contact with the packing, therefore, the packing can be prevented from being corroded by corrosive gas, the working performance and the service life of the packing can be guaranteed, and the device is compact in overall structure and stable in connection.

The invention discloses an RFID-based blowout preventer group full life cycle evaluation method, which belongs to the field of petroleum well safety monitoring, and comprises the following steps: installing an RFID tag on a blowout preventer, monitoring functional data such as pressure, flow, temperature and sulfur content parameters in a blowout preventer group cavity, and establishing a blowout preventer group simulation model; further establishing a blowout preventer group full information storage database; correcting and predicting the simulation model; carrying out full life cycle monitoring on the blowout preventer group according to the RFID tag; according to the simulation model and the prediction model, performing safety prediction on a blowout preventer group flashboard, a blowout preventer group rubber core and a blowout preventer group flange connection seal of the blowout preventer assembly; and S6, the blowout preventer assembly is maintained according to the safety prediction result, based on the RFID technology, the pressure, the temperature, the sulfur content, the flow and other environmental parameters in a blowout preventer cavity under the blowout working condition can be more truly sensed, and more reliable data are provided for safety prediction of the blowout preventer assembly.

The present application discloses a mud blowout preventer box for pressure operation equipment, which relates to the technical field of drilling blowout prevention equipment. It includes a box body, a gland and a bottom plate. A central hole for the drill pipe to pass through is provided on the box body. A discharge port is provided on the side wall of the box body. A first sealing pressure ring is provided at the top of the box body, and a second sealing pressure ring is provided at the bottom of the box body. Both the first sealing pressure ring and the second sealing pressure ring are made of elastic materials. The gland is installed on the top of the box body and is used to squeeze the first sealing pressure ring. A first through hole for communicating with the central hole is provided on the gland. The bottom plate is installed at the bottom of the box body and is used to squeeze the second sealing pressure ring. A second through hole for communicating with the central hole is provided on the bottom plate. Fixing structures for fixing the gland and the bottom plate are respectively provided on the box body. The present application has the effect of effectively preventing the mud in the drill pipe from spraying out during the uncoupling process, and avoiding polluting the drill floor and the surrounding environment.

The invention discloses an underwater blowout preventer myriameter photoelectric composite cable lowering and recycling system which comprises an integrated frame, a cable storage winch is connected to one side of the bottom of the integrated frame, a cable arrangement device is further connected to the bottom of the integrated frame, the cable arrangement device is arranged close to the cable storage winch, and a second guide pulley and a compensator are further connected to the bottom of the integrated frame. The middle of the integrated frame is connected with a traction winch, one side of the traction winch is connected with a first guide pulley, the cable storage winch is connected with an umbilical cable, and the umbilical cable sequentially penetrates through the cable arrangement device, the second guide pulley, the compensator, the first guide pulley and the traction winch. Double-closed-loop control is adopted, the problems that distance cable arrangement dislocation is caused by accumulative errors of PLC control synchronous cable arrangement and umbilical cables and underwater blowout preventers cannot be normally recycled and put down due to faults of a single sensor are solved, self-adaptive cable arrangement and real-time correction are conducted in a mechanical mode, accurate cable arrangement is achieved, and the working efficiency is improved. Compared with an angle sensor, the structure is simple and no accumulative error exists.

The invention discloses a blowout preventer sea test effect evaluation method based on game theory combination weighting and fuzzy evaluation, belongs to the technical field of effect evaluation, is used for blowout preventer sea test effect evaluation, and comprises the following steps: constructing a blowout preventer sea test effect evaluation model, performing subjective weight calculation through a triangular fuzzy analytic hierarchy process subjective weighting method, and calculating the evaluation result of the blowout preventer sea test effect. Objective weight calculation is carried out through a CRITIC objective weighting method, game theory subjective and objective combination weighting is carried out, fuzzy comprehensive evaluation is carried out on game theory subjective and objective combination weighting results, and a blowout preventer sea test effect evaluation result is obtained. The method has guiding significance for sea test data acquisition of the blowout preventer group and the control system thereof and scientific evaluation of the performance of the blowout preventer group and the control system thereof, and the evaluation result can provide a reference basis for optimization and improvement of the blowout preventer group and the control system thereof after the sea test.

A method includes actuating a blow-out preventer (BOP) by moving a ram using an electric motor. The method also includes capturing sensor data with one or more sensors as the BOP is electrically-actuated. The method also includes determining one or more parameters with a controller based upon the sensor data. The method also includes controlling the electric motor based upon the one or more parameters.

The invention relates to the technical field of oil field water injection well downhole operation, in particular to a water injection well under-pressure operation process pipe column. The water injection well under-pressure operation process pipe column comprises a sleeve, an oil pipe penetrates through the sleeve, a blowout prevention working barrel, a production pipe column and a multifunctional blowout prevention tail pipe are sequentially arranged on the oil pipe from top to bottom, a screen pipe is arranged at the tail end of the oil pipe, and a guide cone is arranged below the screen pipe; a blowout prevention inner plug is arranged in the blowout prevention working barrel; the production pipe column comprises a plurality of matched packers for layering the pipe column, and each layer is provided with an anti-backflow water distributor with a one-way valve structure. The multifunctional blowout prevention tail pipe comprises a lower valve body capable of playing a role in blowout prevention and drainage and an upper valve body with a function of a two-way valve. The functions of water distributor blowout prevention and pipe column bottom blowout prevention and drainage in an oil pipe above a tool section are achieved through the blowout prevention working barrel, the backflow prevention water distributor and the multifunctional blowout prevention tail pipe. The upper valve body and the lower valve body are matched, so that the device has the secondary blowout prevention function, and the blowout prevention and drainage effects are achieved in the tubular column lifting process.

A method for quantitative evaluation of gas seal performance of an annular blowout preventer is provided. The equivalent average contact pressure of the tubing-rubber core sealing surface is acquired based on the principle of equivalent seal contact energy, the tubing-rubber core microscopic contact state is simulated by using elastic-plastic normal flattening contact between the rigid smooth flat plate and the uniformly distributed spherical micro-convex body rough plate, the actual contact area of the single spherical micro-convex body under the equivalent average contact pressure of tubing-rubber core sealing surface is acquired, and then the circumferential width and average height of the microscopic leakage channel at the tubing-rubber core contact interface are acquired, the gas leakage volume rate of gas through the tubing-rubber core interface is acquired by using the parallel plate model in hydrodynamics, and the gas leakage volume rate is compared to the allowable gas leakage volume rate.

An integrated detection test device for a drill bit and a rotary blowout preventer and a detection method thereof are provided. The test device includes a support frame, a rotary shaft is mounted on the support frame, and an upper end of the rotary shaft is connected to a piston rod of a first hydraulic cylinder fixed on the support frame; and the rotary shaft is connected to a driving device through a rotary disc sleeved outside the rotary shaft. A pit sinking to a fixing plane of the support frame is arranged below the support frame; and an L-shaped track and a transport vehicle slidably connected to the track are mounted in the pit and used to transport the rotary blowout preventer or the drill bit test bench to a test position.

The angle-adjustable underwater well mouth comprises a high-pressure well mouth, a low-pressure well mouth and a low-pressure well mouth extension sleeve, the high-pressure well mouth and the low-pressure well mouth are positioned and adjusted in direction through a first well mouth spherical pair, and the high-pressure well mouth and the low-pressure well mouth are locked through a locking ring; in the tie-back operation mode, a high-pressure well mouth is connected with a flexible insertion sealing pipe through a high-pressure well mouth thin-wall extension sleeve, a tie-back tail pipe hanger is arranged in a low-pressure well mouth extension sleeve, a guide cylinder is arranged at the upper end of the tie-back tail pipe hanger, and a guide head is arranged at the lower end of the flexible insertion sealing pipe. The flexible insertion sealing pipe can enter the tie-back tail pipe hanger under the guiding action of the guiding head and the guiding cylinder; in the non-tie-back operation mode, the common extension sleeve is connected below the high-pressure wellhead, and the sleeve string is connected below the common extension sleeve. The inclined high-pressure wellhead is adjusted to be approximately vertical as required, so that a service tool, a blowout preventer and a Christmas tree are convenient to mount, the stability of the wellhead is enhanced, and the operation risk is reduced.