2069 results about "Wellhead" patented technology

The invention relates to the technical field of pressure detection, in particular to an oil well pressure anomaly detection method and system based on deep learning, and the method comprises the following steps: collecting a control signal and pressure data, calculating a slope difference and fluctuation to mark a sudden change point, extracting a multi-dimensional feature group to generate a training sample, and constructing a deep learning model to recognize pressure difference anomaly. The oil well pressure abnormal time period is predicted in real time. According to the method, accurate attribution of abnormal fluctuations in the oil well operation process is achieved by constructing the time sequence corresponding relation between control signals and pressure difference sudden change, the target pertinence of pressure change recognition is improved, a sliding structure extracts multi-dimensional dynamic characteristics, the capacity of capturing wellhead or underground pressure micro-amplitude abnormity is enhanced, and the training sample is combined with a control behavior label, so that the accuracy of the abnormal fluctuations in the oil well operation process is improved. The distinguishing capability of the model to different abnormal forms is optimized, the adaptability under complex working conditions is improved, a real-time prediction mechanism ensures that oil well pressure state recognition has continuity, rapidness and high confidence, and risk early warning and operation guarantee in the oil extraction process are effectively supported.

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 particularly relates to the technical field of multi-source data fusion, and discloses an intelligent deformation monitoring system for a well drilling wellhead rising short section flange, which comprises a multi-source data acquisition module, a data fusion processing module, an intelligent deformation analysis module, a digital twin modeling module, a risk grading early warning module and a man-machine interaction feedback module, a flange deformation associated data set is obtained through a multi-source data acquisition module, a multi-dimensional fusion feature set is constructed through a data fusion processing module, a flange deformation abnormal index is calculated in real time through an intelligent deformation analysis module, a three-dimensional model of a rising short section flange is constructed through a digital twin modeling module, and a three-dimensional model of the rising short section flange is obtained. A grading early warning strategy is formulated through the risk grading early warning module, monitoring data, an early warning signal and a three-dimensional model are displayed in real time through the man-machine interaction feedback module, and an operation interface is provided; all-directional data acquisition of flange deformation and associated environments is realized, the comprehensiveness of data monitoring is improved, the accuracy of deformation monitoring is improved, and the decision-making efficiency is improved.

The invention relates to the technical field of oil field workover treatment, in particular to a rapid blowout wrecking device and method for minor repair operation. According to the technical scheme, a lifting mechanism is installed on workover treatment equipment through a fixing mechanism, a rotary speed reducer is installed at the upper end of the lifting mechanism, a blowout wrecking rotating arm is installed on the upper portion of the rotary speed reducer, the outer end of the blowout wrecking rotating arm is fixedly connected with a fixing base, a turbine is installed in the fixing base, and a rotating short section is installed in the center of the turbine. The lower end of the rotary short section is movably connected with a full-bore plug valve; the worm is installed on one side of the turbine, the worm is driven by the hydraulic cycloid motor to rotate, the worm drives the turbine and the rotary short section to rotate, then the full-bore plug valve is driven to be rotationally connected to an oil pipe of a wellhead, then the switch knob is closed, and blowout wrecking is completed. The full-bore plug valve is installed through mechanical rotation, the follow-up loading function is achieved, potential safety hazards caused by manual installation of the full-bore plug valve are avoided, and rapid blowout wrecking work of blowout is achieved.

The invention relates to the technical field of oil and gas drilling, in particular to a drill rod transfer system and method for an ocean platform. The drill rod transferring system comprises a drill rod conveying device, a drill rod transferring device and a traveling hoisting assembly, the drill rod transferring device is arranged on one side of the drill floor face, the traveling hoisting assembly is installed on the drill floor face through a derrick, the drill rod conveying device is arranged above a pipe column storage yard, and therefore the position of the pipe storage yard does not need to be occupied, more drill rods can be placed in the pipe storage yard, and the construction efficiency is improved. Therefore, continuity and efficiency of drilling operation are improved. The drill rod conveying device can grab drill rods in a pipe column storage yard and reciprocate in front of the pipe column storage yard and the drill floor face, the drill rod conveying device is used for cleaning and buckling the drill rods, overturning and lifting the drill rods to be in a vertical state after oil coating, and the drill rod transferring device is used for grabbing the drill rods in the vertical state in the drill rod conveying device and transferring the drill rods to a well opening or a mouse hole. And therefore, the drill rod can be transferred from the pipe storage yard to the drill floor surface.

The invention provides a shale oil well pressure recovery well test interpretation method and device and electronic equipment.The method comprises the steps that effective well shut-in pressure test data and well entering time of a pressure gauge are obtained, the effective well shut-in pressure test data are well bottom pressure data after well shut-in and after the pressure gauge is lowered to the target test depth away from a well opening, and the well entering time is obtained; the well entering time is the time required for lowering the pressure gauge to a target test depth from a well mouth after the well is closed; obtaining well shut-in starting time and a pressure gradient in a well entering process of the pressure gauge; according to the pressure gradient, fluid pressure data at the well shut-in starting time and the target test depth from the well mouth are calculated to serve as supplementary pressure data; according to the effective shut-in pressure test data, the well entering time and the supplementary pressure data, a complete pressure recovery well test curve is determined; and on the basis of the complete pressure recovery well test curve, pressure recovery well test interpretation is carried out. According to the method, the problem of data missing in the early stage of well shut-in testing can be solved, the integrity of a pressure recovery well testing curve is guaranteed, and the accuracy of pressure recovery well testing interpretation is improved.

The utility model discloses a fracturing wellhead water hammer wave tester, which relates to the technical field of petroleum physical exploration, and comprises a wellhead oil pipe buckle joint, a copper gasket, a pressure gauge and a connecting plug, the wellhead oil pipe buckle joint is connected with a wellhead; the copper gasket is arranged between the wellhead oil pipe buckling head and the pressure gauge and is used for sealing and buffering between the wellhead oil pipe buckling head and the pressure gauge; the pressure gauge is used for monitoring wellhead pressure changes in real time; the connecting plug is used for connecting the pressure gauge with an external data processing system. Based on the tester provided by the invention, the pressure change generated during underground fracturing can be accurately and reliably monitored.

The invention discloses a throttling well killing control method and system, a storage medium and a program product, and relates to the field of intelligent control. According to the application, the control system collects wellhead pressure, casing pressure, throttle valve opening and shaft temperature gradient data; comparing the shaft temperature gradient data with a preset temperature reference curve to obtain a temperature deviation sequence, and performing Fourier decomposition on the temperature deviation sequence to obtain a main frequency component; on the basis of the main frequency component and a preset frequency threshold value, downhole flow situation parameters are determined, and a pressure dynamic compensation function is established according to the downhole flow situation parameters; the wellhead pressure and the casing pressure are input into the pressure dynamic compensation function, and the corrected wellhead pressure and the corrected casing pressure are obtained; and on the basis of the corrected wellhead pressure, the corrected casing pressure and the throttle valve opening, the throttle valve opening adjusting amount is calculated, the throttle valve is controlled to be adjusted according to the throttle valve opening adjusting amount, and therefore the reliability and accuracy of throttle well killing control are improved.

The invention discloses a system and a method for automatically measuring pipe network parameters based on three-dimensional scanning of a wellhead of an inspection well, and belongs to the technical field of municipal engineering measurement. The system comprises a wellhead fixing assembly, a three-dimensional laser scanning assembly, a posture sensing assembly, a distance measuring assembly, a coordinate input assembly, a control processing assembly and a telescopic rod assembly. According to the method, through system deployment leveling, coordinate reference establishment, working condition judgment, point cloud acquisition, data processing and result output, automatic measurement of inspection well depth, pipe network pipe diameter, pipeline trend and pipe orifice center coordinates is realized. The system is fixed at a wellhead, does not need to descend, and adapts to scenes such as shallow wells / deep wells and good / weak signal areas; based on a high-density point cloud and an automatic algorithm, the measurement precision is high, the efficiency is improved, and output data can be directly used for pipe network modeling. The method solves the problems of low efficiency, strong manual dependence and poor safety of traditional measurement, and is suitable for parameter measurement of various inspection wells and pipe networks.

A method comprising validating a carbon dioxide injection operation plan at a carbon dioxide injection site, which comprises creating a first simulation model to simulate flow from the wellhead to a downhole environment and creating a second simulation model to simulate flow dynamics in a reservoir. The method further comprises conducting a carbon dioxide injection test operation based on the carbon dioxide injection plan at the carbon dioxide injection site and monitoring the carbon dioxide injection operation, which comprises measuring real-time data from the wellhead and the downhole, comparing the real-time data with the first simulation model, identifying risks from the comparison between the collected data in the first simulation model, and adjusting the carbon dioxide injection operation and based on the identified risks.

The invention belongs to the technical field of petroleum and natural gas drilling engineering, and particularly relates to a borehole friction coefficient segmented inversion method based on a genetic algorithm and string mechanics, which comprises the following steps of: acquiring specified data of a construction well, dividing a borehole of the construction well to be predicted into well sections with fixed lengths, defining depth ranges of the well sections, and setting a global search range of a friction coefficient; initializing the population size, the maximum number of iterations, the selection probability, the crossover probability and the mutation probability of the genetic algorithm, and performing downward inversion section by section from a wellhead section: initializing a candidate friction coefficient population of a current well section, setting a sectional friction coefficient, calculating a hook load at the tail of the current section, and calculating the maximum number of iterations; iterative optimization is carried out until a termination condition is met, and then the optimal friction coefficient of the section is output and fixed; and iteratively executing until inversion of all well sections is completed, outputting a full-borehole segmented friction coefficient profile, and realizing intelligent segmented inversion of the borehole friction coefficient by combining a tubular column mechanical model and a genetic algorithm, so that the prediction precision of the friction coefficient is improved, and the well drilling design and construction are optimized.

The invention provides a well-station-oil depot coupling simulation-based crude oil coagulation risk optimization method, which comprises the following steps of: firstly, designing a well-station-oil depot pipe network system topological structure, analyzing a pipe network structure, and numbering wells, stations, oil depots and pipelines to obtain the numbers of an upstream pipeline and a downstream pipeline of each pipeline; then, a well-station-oil depot pipe network system is disassembled into a node + pipeline form, each pipeline is dispersed into a plurality of calculation units, and the pipe section length, diameter and dip angle of each calculation unit are obtained; according to the fluid temperature of each wellhead, the fluid entering pressure of each station and a PVT physical property table, assuming the temperature and pressure of all nodes to obtain the average temperature and pressure of each pipe section; and calculating crude oil physical property parameters, crude oil flow parameters, pressure drop and temperature drop parameters of each pipe section by adopting an iterative method to obtain pressure and temperature of all nodes, and finally judging the pipe condensation risk according to the physical property parameters and the pipeline pressure and temperature. The pipe condensation risk can be automatically judged, and the production efficiency and safety are improved.

The invention provides a deepwater underwater wellhead stability real-time monitoring and early warning system, and belongs to the technical field of early warning systems. The deepwater underwater wellhead stability real-time monitoring and early warning system comprises a monitoring scheme design module, a data acquisition and storage module, a state observation module, a state early warning module, a signal wireless transmission module and a platform remote monitoring module. The deepwater underwater wellhead stability real-time monitoring and early warning system comprises the following steps that the monitoring scheme design module determines layout of sensors and a host; the data acquisition and storage module acquires signals and sends the signals to the state observation module; the state observation module fuses the mechanism model and the data driving model to form a state prediction model; the state early warning module forms a three-level early warning mechanism and transmits early warning data; the signal wireless transmission module encodes, modulates and transmits the early warning data; the platform remote monitoring module receives and processes the signals to achieve stability early warning, and the problems that in the prior art, a deepwater underwater wellhead stability real-time monitoring and early warning system lacks, and safe and efficient development of deepwater oil and gas resources is difficult to guarantee are solved.

The invention discloses a casing head drilling and polishing device for a petroleum wellhead, and relates to the technical field of combined machining equipment.The casing head drilling and polishing device comprises a machining platform and a control device arranged on the machining platform, a fixing block is fixedly arranged on the machining platform, a driving groove is formed in the fixing block, and a rotating part is arranged on the fixing block; a clamping mechanism is arranged on the rotating part, a bearing part is arranged on the machining platform, a position adjusting mechanism is arranged on the bearing part, and a combined machining mechanism is arranged on the position adjusting mechanism. The combined machining mechanism is arranged, so that the device can adjust the distance between the two mounting sleeves so as to enable the distance between the axes of the two mounting sleeves to be matched with the distance between two symmetrical to-be-drilled positions on the end face of the sleeve head pipe, and subsequent combined machining of the end face of the sleeve head pipe is facilitated; the combined machining efficiency of the device on the end face of the sleeve head pipe is improved, the combined machining flexibility of the device is also improved, and meanwhile the combined machining efficiency of the device is also improved.

The invention relates to the technical field of oil extraction wellhead sealing, in particular to an oil extraction wellhead port sealing device which comprises a sealing mechanism installed on an oil extraction wellhead. A first sealing unit, a second sealing unit and a third sealing unit are sequentially arranged in the shell from top to bottom. In the process that the polish rod moves up and down, the polish rod drives the rotating assembly to rotate, then the rotating assembly drives the first packing to rotate, the contact portion of the first packing and the polish rod can be adjusted continuously, the first packing can be abraded more evenly, and the situation that sealing fails due to serious local abrasion of the first packing is avoided; and meanwhile, in the rotating process of the rotating assembly, a centering clamping block can conduct centering clamping on the polish rod, the situation that the polish rod deflects when moving up and down is prevented, and the situation that local abrasion of the first packing is serious is avoided.

The invention relates to the technical field of wellhead protection, and particularly discloses an oil production wellhead pressure self-adaption protection device which comprises a protection shell, an indicator lamp is installed on the protection shell, the protection shell comprises a shell body, and a main pipeline is arranged on the inner side of the shell body. A partition cavity, a pressurizing groove and a pressure sensing groove are sequentially formed in the outer side of the main pipeline from top to bottom, the partition cavity is a multi-angle deep groove, a partition assembly is installed in the partition cavity, one end of the partition assembly is installed on a hydraulic input pipe, and the hydraulic input pipes are communicated through hydraulic oil communication holes; by arranging the partition assembly, when blowout occurs, a pressure sensor collects pressure information, an electric signal controls a hydraulic assembly to extend, the sharp ends of triangular fault blocks pierce the interior of a pipeline, multi-direction pressure synchronous operation is formed among the four triangular fault blocks, the pipeline is rapidly cut off, and the pipeline cannot transport oil again; and rapid and complete plugging in the pipeline is realized.

The invention provides a method and a device for predicting a steam cavity in steam flooding by using an overlap factor, and belongs to the technical field of oil field oil extraction. The method comprises the following steps: determining an incidence relation between wellhead production characteristics of a first production well and a well bottom average temperature value, and determining a well bottom average temperature value of a second production well according to wellhead production characteristics of the second production well by utilizing the incidence relation; determining overlap factors of different displacement layer sections of the first production well; weighting the well bottom average temperature value of the second production well by using the overlay factor of each displacement layer section, and obtaining the well bottom correction temperature of each displacement layer section in the second production well in a one-to-one correspondence manner; and comparing the well bottom correction temperature of the second production well with the well bottom temperature of the steam injection well in the well group where the second production well is located, comparing the well bottom pressure of the second production well with the well bottom pressure of the steam injection well, and identifying the steam cavity of each displacement layer section of the second production well. By means of the method, rapid, accurate and low-cost recognition of the steam cavity is achieved.

The invention relates to the technical field of oil and gas field and coal bed gas field mining equipment, in particular to a wellhead suspension centrifugal pump drive double-pipe jet flow drainage and mining device and a using method. According to the technical scheme, a lower tubing head four-way joint, a middle tubing head four-way joint and an upper tubing head four-way joint are sequentially installed on a bottom flange, a motor is installed on the upper portion of the upper tubing head four-way joint, and an inner pipe plug-in pump core catcher is installed at the lower end of a submersible water injection centrifugal pump; the lower end of the inner pipe inserted pump core catcher is movably connected with an inner layer oil pipe, and a pump core installed in the double-pipe jet pump is arranged in a pump cylinder of the jet pump. The device has the advantages that due to the fact that a packer is omitted and the device is connected with the double-pipe jet pump, sand-containing liquid in a well can be sucked, and exploitation of natural gas or coal bed gas can be achieved; the inner pipe is inserted into an elastic clamping jaw of the pump core catcher to catch the pump core; and the submersible water injection centrifugal pump and the pump core can be lifted to the ground at one time by hoisting the motor at a ground wellhead, so that the maintenance is convenient.

The invention discloses an intelligent prediction method for a fracturing wellhead yield increase effect, and the method comprises the steps: carrying out the fusion collection, standardization and embedded dimension reduction of multi-source real-time and historical data, environment and geological parameters and expert experience, cooperatively extracting high-dimensional features, evaluating the uncertainty of the features through a Bayesian model, and carrying out the weighted input of a reinforcement learning architecture, thereby achieving the intelligent prediction of the yield increase effect of a fracturing wellhead. According to the method, causal reasoning and deviation correction are carried out in combination with physical and business indexes, high consistency of a strategy and a multi-target business index is realized by dynamically adjusting a reward function, and self-adaptive retraining and robust optimization of a model in extreme environments such as high noise and data missing are realized through field evaluation regression analysis of output. According to the method, the adaptability and prediction accuracy of the fracturing yield increase prediction and optimization system to complex working conditions are remarkably improved.

The invention relates to the technical field of oil exploitation, and discloses a combined throttling fracturing wellhead which comprises a fracturing wellhead body and further comprises a throttling shell, the throttling shell is installed on the fracturing wellhead body, a pressure control valve is connected to the throttling shell, and a head pipe is connected to the pressure control valve; the throttling assembly is used for stabilizing the flow velocity of the fracturing fluid entering the fracturing wellhead; and the shearing assembly is used for dispersing the agglomerated proppant in the throttling shell. Through the arrangement of the throttling assembly, the first core block, the second core block and the third core block form a plurality of flow channels, the flow channels can distribute fracturing fluid and reduce vortexes and backflow areas, and meanwhile the first core block can adaptively rotate along with the pressure in the throttling shell to adjust the sectional area of the flow channels and balance the flow so as to stabilize the flow speed; the flow rate and pressure of fracturing fluid are more stable, and caking and accumulation of the propping agent at the throttling position are reduced.

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.

A method for performing simultaneous operations at a wellsite comprising two or more adjacent wellheads, each respectively connected to a well, may include the following steps: providing a fluid supply via upstream equipment to an intermediate supply point; fluidly connecting the intermediate supply point to a single wellhead, the fluidly connecting comprising connecting a first end of a flexible pipe to the intermediate supply point and a second end of the flexible pipe to a first wellhead; performing a wellbore operation on a first well using the fluid supply from the upstream equipment supplied to the first wellhead; disconnecting the second end of the flexible pipe from the first wellhead; and connecting the second end of the flexible pipe to a second wellhead.

The application provides a downhole hydraulic back-off tool, characterized in that the back-off tool comprises a hydraulic anchor, a hydraulic back-off device and a telescopic compensation mechanism, and the power part is composed of a driving cylinder, a driving pin, an anti-rotation cylinder, a rotating cylinder, a third spring, a central shaft, an inner ratchet mechanism, a driving shaft and an outer ratchet mechanism; the one-way left-rotation part of the hydraulic back-off device comprises the inner ratchet mechanism and a second spring, and the anti-rebound right-rotation part comprises the outer ratchet mechanism and a first spring. The application makes all the torques of the workover operation be transmitted to the fishing tool through the relative movement of the inner ratchet mechanism and the outer ratchet mechanism from the hydraulic back-off device, and the working string does not need to transmit the torque to the downhole through the surface wellhead rotary table or the top drive, the hydraulic anchor is anchored and unanchored through the pressure in the string, and the anchor provides a fulcrum function for the timely cooperation of the power torque output of the hydraulic back-off device; the telescopic compensation mechanism is used for compensating the axial displacement of the back-off tool.

The invention provides a deepwater semi-submersible drilling platform pressure control drilling MPD control system which comprises a platform rotary table face. A platform wellhead flow divider, a marine riser expansion joint, a marine riser tension ring, a marine riser rotation control pup joint, an MPD hydraulic control pup joint, an MPD marine riser annulus sealing device, a marine riser four-way joint, a drilling marine riser, an underwater blowout preventer set and a seabed underwater wellhead are sequentially connected to the platform rotary table face from top to bottom. The MPD hydraulic control pup joint is connected with a rotary control pup joint power unit through an umbilical cable I, an umbilical cable roller frame I and a cable hose, and the rotary control pup joint power unit is connected with a deepwater MPD electro-hydraulic control system main control station; the MPD marine riser annulus sealing device is connected with the annulus sealing device and the buffer manifold hydraulic power unit through an umbilical cable II, an umbilical cable roller frame II and a cable hose and is connected with the deepwater MPD electro-hydraulic control system master control station; the throttling hydraulic power unit is connected with the deepwater MPD electro-hydraulic control system master control station. According to the system, pressure regulation and control, equipment management and operation safety guarantee in the deepwater pressure-controlled drilling well are realized.

The invention relates to the technical field of oil and gas exploitation equipment, and particularly discloses a durable and stable extra-high pressure wellhead device which comprises a tubing head four-way joint, an oil and gas exploitation tree, a connecting assembly and an auxiliary assembly. A pressure type vibration pipe fitting is arranged in the oil and gas extraction tree, and a vibration monitoring and adjusting system is combined, so that resonance is avoided; the sealing performance is improved by adopting a multi-layer composite sealing structure and a double-layer sealing ring; a reinforced supporting structure and an anti-movement structure are utilized to ensure the stability; and real-time monitoring, early warning and remote control are realized by means of an intelligent monitoring and control system. The ultra-high-pressure well head device effectively solves many problems of an existing well head device in the ultra-high-pressure environment, the stability, the sealing performance and the intelligent degree of the device are greatly improved, the maintenance cost is reduced, the oil and gas exploitation efficiency and safety are improved, and the ultra-high-pressure well head device is suitable for various ultra-high-pressure oil and gas exploitation scenes.

The invention belongs to the technical field of oil and gas drilling equipment, and discloses a mechanical arm for lifting a pipe, which comprises a mechanical arm and a horizontal catwalk, the mechanical arm comprises a lifting mechanism, the lifting mechanism is arranged on the horizontal catwalk, the lifting mechanism is provided with a swing mechanism, the swing mechanism is provided with a luffing mechanism, the luffing mechanism is provided with a telescopic mechanism, and the telescopic mechanism is arranged on the horizontal catwalk. A righting mechanism is arranged in the middle of the telescopic mechanism, clamping mechanisms are arranged at the two ends of the telescopic mechanism, all the clamping mechanisms are used for clamping the upper position and the lower position of a pipe, and the righting mechanism is used for righting the pipe. Synchronous operation of the horizontal catwalk, the mechanical arm and the power head can be achieved, automatic telescopic buckling or releasing of the wellhead coupling can be achieved, and the operation efficiency is improved.

The invention relates to the technical field of oil well exploitation equipment, in particular to an underground coiled tubing capable of controlling the flow of produced liquid. The device comprises a double-layer pipe fitting and a flow control assembly. The motor drives the side frame to slide up and down along the inner wall of the extension plate through the control shaft, then the variable section pipe is driven to move up and down in the inner pipe, when the variable section pipe moves downwards, the area, exposed out of the bottom of the packer, of the square opening is increased, otherwise, the area is reduced, and the flow in unit time is changed by changing the exposed circulation sectional area of the square opening; meanwhile, when the variable fluid moves upwards to reduce or moves downwards to increase the circulation sectional area, the elastic piece is synchronously compressed or stretched to increase or reduce pressure, the pressure balance of the liquid in the first oil cavity is maintained, and the purpose of adjusting the flow is achieved. The conditions of cavitation damage, water hammer vibration and the like caused by remarkable reduction of the pressure in the pipeline can be avoided, and therefore stable operation of the pipeline can be guaranteed while the flow can be adjusted.

The invention belongs to the technical field of geothermal energy development and utilization, and particularly relates to efficient extraction equipment for a deep geothermal exploitation well, which comprises a plurality of water pumping devices, the plurality of water pumping devices are sequentially communicated in series through a plurality of extension pipe fittings, and the water pumping device close to a wellhead is fixedly connected with a steel wire rope on hoisting equipment; the water pumping device comprises a water pumping mechanism, a well cementation assembly and a guide mechanism, the outer wall of the water pumping mechanism is sleeved with the well cementation assembly, the well cementation assembly is used for making friction contact with the well wall so as to keep the working position of the water pumping mechanism in a well, and the guide mechanism is arranged at the bottom end of the water pumping mechanism and used for guiding the water pumping mechanism to work. And the guide mechanism is used for smoothly lowering the water pumping mechanism into the well and keeping the water pumping mechanism coaxial with the well body. It is guaranteed that the water pumping mechanism is stably fixed in a well, smoothly lowered to the bottom of the well and always coaxially positioned with the well body, and the stability of extraction operation is improved.

The invention discloses an automatic hard well shut-in method and system integrated with a petroleum drilling machine control system, and relates to the technical field of petroleum drilling machine well control. According to the method, the drilling working condition is monitored in real time, an overflow trigger index is calculated, the overflow risk in a shaft is judged, and a hard well shut-in process is started after an alarm is given; the position of a hook and the position of a drill rod joint are monitored in real time, a winch safety stop index is calculated, whether the operation state of the winch is safe or not is judged, the hook is automatically moved to the optimal stop point, and the winch is braked; top drive and slurry pump linkage control is started, a top drive and slurry pump linkage control coefficient is calculated, whether the static working condition before well control is met or not is judged, and equipment is stopped or a strategy is executed accordingly; monitoring the action of the blowout preventer and the state of the hydraulic system, calculating the consistency index of the action of the blowout preventer, judging whether the action of the blowout preventer meets the well shut-in requirement or not, and giving a strategy if the action does not meet the well shut-in requirement; real-time judgment of the overflow risk and automatic hard shut-in of the well can be achieved, the safety of the well mouth is guaranteed, and the risk of manual misoperation is reduced.

The invention provides an underwater wellhead connector mechanical property testing device, and relates to the technical field of mechanical property testing devices.The device comprises a supporting mechanism which comprises a first supporting unit and a second supporting unit, and a pressurizing device is arranged between the first supporting unit and the second supporting unit; the simulated high-pressure well mouth is arranged on the first supporting unit and comprises a first connector used for being connected with the first end of a well mouth connector; the simulated Christmas tree is arranged on the second supporting unit and comprises a second connector used for being connected with the second end of the wellhead connector; the power unit is used for providing power for the pressurizing device; and the console is connected with the power unit and is used for controlling the loading force applied to the wellhead connector by the pressurizing device. The device is used for simulating and applying various load conditions to evaluate the underwater wellhead connector, and the safety and reliability of the underwater wellhead connector in oil and gas exploitation operation are ensured.