33 results about "Production engineering" patented technology

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.

The invention discloses a device for testing the sealing performance of a full-size sleeve-cement sheath-stratum combination of a hydrogen storage bank. Relates to the technical field of petroleum and natural gas drilling and production engineering, and is characterized in that the device comprises a sleeve-cement sheath-simulated stratum maintenance device for preparing the simulated stratum, an alternating load applying device and a sealing performance testing device; the method comprises the following steps: preparing a full-size simulated stratum through a maintenance device, constructing a'sleeve-cement sheath-simulated stratum 'integrated assembly by taking the full-size simulated stratum as a carrier, completing maintenance, and detecting the sealing integrity of the cement sheath after simulating the actual underground working condition; the simulation stratum capable of being used for testing the sealing performance of the cement sheath is prepared, the full-size simulation stratum serves as a core testing carrier, and quantitative evaluation of the sealing performance of the full-size cement sheath is achieved.

The invention relates to the technical field of oil field oil production engineering, in particular to a sand blocking prevention rotational flow groove type sliding valve mechanism of a constant flow blanking plug for a water injection well. The mechanism comprises a fishing rod, the fishing rod penetrates through a pressing cap, a cam is inserted into the bottom end of the fishing rod, the pressing cap is connected with an upper body, the cam is installed on the upper body, the lower end of the upper body is connected with a lower body, the inner side of the lower body is connected with a sliding valve, a gap is formed between the sliding valve and the lower body, and a first contact face is arranged between the sliding valve and the lower body. The sliding valve is provided with at least one rotational flow groove, the rotational flow groove is spirally wound on the outer surface of the sliding valve, the upper end of the sliding valve is connected with a limiting righting rod, the limiting righting rod controls the sliding valve to rotate and slide in a reciprocating mode, a water nozzle is installed in the lower end of the sliding valve, a filter screen is installed at the bottom end of the lower body, and a plurality of O-shaped packing are installed on the filter screen. According to the sand blocking prevention rotational flow groove type sliding valve mechanism of the constant-flow blanking plug for the water injection well, the sand blocking probability of the sliding valve of the constant-flow blanking plug is effectively reduced, and the technological service life of the constant-flow blanking plug is prolonged.

The invention relates to the technical field of oil field oil production engineering, in particular to a small-diameter fracturing pipe column suitable for a small pocket well. The problems that an existing fracturing pipe column cannot fracture a small pocket sleeve to damage a well, movement cannot be opened after fracturing, stability is poor, and lifting of the pipe column is abnormal are mainly solved. The lower end of the oil pipe (2) is connected with a hydraulic anchor (4) through a safety connector (3), the lower end of the hydraulic anchor (4) is connected with a plurality of sliding sleeve sand blasters (4), the positions of the sliding sleeve sand blasters (4) on a pipe column correspond to all fractured layers respectively, and a sliding sleeve seat (5) is arranged below each stage of sliding sleeve sand blaster (4). The bottom of the sliding sleeve seat (5) at the lowest end is connected with a sand blower (6) without a sliding sleeve, and the sand blower (6) without the sliding sleeve corresponds to the fractured layer at the lowest end. The small-diameter fracturing tubular column of the small-pocket well can adapt to a casing damage well with a fracturing pocket larger than 3 m, the ultra-large sand adding scale can be achieved under the large displacement condition, and remaining oil of the small-pocket well can be effectively used.

The present application relates to oilfield production engineering technical field, especially a kind of for beam-pumping unit's suspension rope device.Mainly solve the problem that the load of some beam-pumping unit traction rope is large and affects traction rope life-span.Problem.It includes weight reduction device (3), the weight reduction device (3) includes pulley assembly (31), pulley assembly (31) includes main pulley (312) and installation shaft (311), wherein main pulley (312) is connected in the outside of installation shaft (311), and the lower end of installation shaft (311) is connected with intermediate shaft (313) by connecting rod (314);The traction rope (6) is fixed in the inside of main pulley (312) after passing through main pulley (312), and the upper end of wellhead suspension rope device (2) is connected wellhead traction rope, and wellhead traction rope is connected on intermediate shaft (313).The suspension rope device can greatly reduce the load borne by traction rope, thereby prolonging the service life of traction rope, reduce the loss caused by the breakage of traction rope.

The present application relates to the technical field of oilfield production engineering, and particularly relates to a non-full-pipe drilling fluid flow monitoring device. The main problem of the existing drilling fluid return flow monitoring device is that the monitoring result error is large. A vertical measuring pipe (9) is connected to the upper side wall of the body (1), the measuring pipe (9) is connected to the top cover (6), the top cover (6) is provided with a laser probe (18), a magnetic field probe (14) is connected to the bottom side wall of the body (1), the body (1) is provided with a circuit board (20), and the laser probe (18) and the magnetic field probe (14) are connected to the circuit board (20). The non-full-pipe drilling fluid flow monitoring device can accurately monitor the non-full-pipe flow of high-speed drilling fluid returned from the wellhead. When drilling encounters complex conditions such as overflow and leakage, early warning can be accurately performed, complex accidents in the well can be reduced, and oil and gas safety can be ensured.

This invention relates to the field of oil and gas field production engineering technology, and particularly to a clamping distance adjustment device for oil and gas well fracturing. It mainly solves the problem that existing fracturing systems can only connect to one clamping distance per trip, making well and layer selection difficult. The clamping distance adjustment device for oil and gas well fracturing includes an upper connector (1), the lower end of which is connected to a central tube (4). The central tube (4) is externally slidably connected to an outer sleeve (5). The lower end of the central tube (4) is internally threaded with a spring claw (7). The external boss of the spring claw (7) engages with the internal boss on the inner wall of the outer sleeve (5). A sliding sleeve (8) is provided inside the spring claw (7). A lower connector (9) is provided at the lower end of the spring claw (7). The sliding sleeve (8) and the lower connector (9) are connected by a shear pin (11). This clamping distance adjustment device for oil and gas well fracturing can be connected to the fracturing tubing string and can adjust the clamping distance even without raising the tubing string downhole, adapting to changes in reservoir thickness and enabling efficient development of thin and poor reservoirs.

The invention discloses an industrial automation-based sheet metal production engineering data automatic compilation system, which comprises a data acquisition module, a data preprocessing module, a feature extraction module, an engineering data compilation module, a database module and a data output module, the data acquisition module is in communication connection with the sheet metal raw material detection equipment, the product design terminal, the production equipment and the production data recording device and is used for acquiring sheet metal raw material parameters, product design parameters, production equipment parameters and historical production data. According to the sheet metal production engineering data automatic compilation system based on industrial automation, various data related to sheet metal production are comprehensively acquired through the data acquisition module, and accurate and effective data support is provided for engineering data compilation in combination with data preprocessing and feature extraction technologies; and by utilizing a machine learning model and a preset process rule in the engineering data compiling module, automatic compiling of sheet metal production engineering data is realized, and a large amount of manual intervention is not needed.

The method for predicting the service life of the coiled tubing under the cooperation of plasticity and damage is characterized in that the fatigue service life and the strain amplitude under the specific curvature radius are obtained through a full-size bending fatigue test, and the fatigue service life and the strain amplitude are substituted into a Manson-Coffin model to invert an unknown coefficient; the method comprises the following steps: determining mechanical parameters of a material in combination with a uniaxial tensile test, constructing a finite element mechanical model, carrying out finite element simulation on bending working conditions of a damaged coiled tubing on a roller and a guider, extracting strain amplitudes, and further establishing strain amplitude calculation models under different working conditions by adopting a Levenberg-Marquardt algorithm; coupling the model with a Manson-Coffin equation, and respectively constructing fatigue life prediction models of the roller and the guider; and on the basis of the Miner theory, three times of bending cycles with different curvatures in one trip are regarded as complete load cycles, an accumulated damage value is calculated, a correction coefficient is determined through low-cycle fatigue finite element simulation, a calculation model of the number of remaining trip times is established, and quantitative prediction of the remaining life is achieved. The method is suitable for the technical field of petroleum and natural gas drilling engineering.

1. Name of the product in this design: Silent Diesel Generator Set. 2. Application of this design: It is used for power supply in industrial production, engineering construction, emergency power supply, outdoor operations and other scenarios. The soundproof box structure reduces operating noise and is suitable for places where noise control is required. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a gas storage injection-production well pattern structure, which relates to the technical field of gas production engineering, and comprises a gas storage main body, a horizontal well main body and a vertical well main body, a first reservoir is arranged in the gas storage main body, a middle layer is arranged at the lower end of the first reservoir, and a second reservoir is arranged at the lower end of the middle layer; a horizontal well main body is arranged in the gas storage main body, a vertical well main body is distributed outside the horizontal well main body, a mounting butt joint ring is additionally arranged at the upper end of the outer portion of the vertical well main body, a threaded mounting groove is formed in the mounting butt joint ring, and a mounting bolt is connected into the threaded mounting groove. A limiting butt-joint groove is formed in the upper end of the interior of the vertical well body, a rubber sealing ring is connected into the limiting butt-joint groove, and mounting valves are distributed at the upper end of the vertical well body. According to the injection-production well pattern structure of the gas storage, the vertical well and the horizontal well can be matched together, the injection-production efficiency is improved, and the control degree of the injection-production well pattern structure of the gas storage on the gas storage is improved.

The application is suitable for the technical field of control, and provides a powder production process control method and device, terminal equipment and computer readable storage medium, which comprises the following steps: acquiring real-time particle size distribution in a powder production process; if a particle size deviation value between the real-time particle size distribution and a target particle size distribution is greater than a preset threshold value, calculating a real-time influence weight corresponding to a process parameter; wherein the real-time influence weight is used to represent a real-time influence degree of the process parameter on the particle size distribution; the process parameter is a parameter of a production equipment participating in powder production; generating a real-time control strategy according to the real-time influence weight corresponding to the process parameter; and controlling the production equipment to run according to the real-time control strategy. Through the above method, the control efficiency and control precision of the powder production process can be effectively improved.

The invention relates to the technical field of chip burning, in particular to a remote automatic burning method, device and equipment and a medium. The remote automatic burning method is applied to an upper computer, a circuit board identifier of a burning circuit board is obtained through the upper computer, an identification request is sent to a production and manufacturing integrated system according to the circuit board identifier, and a feedback result returned by the production and manufacturing integrated system is received; analyzing the feedback result to obtain a target software material number of the to-be-burned software, receiving a burning file sent by the software version management system and a configuration file corresponding to the burning file according to the target software material number, and generating a burning command script according to the burning file and the configuration file; and determining a burning simulator, and controlling the burning simulator to execute the burning command script for burning. The burning process is controlled through the upper computer, management and control of production engineers are not needed, the production engineers do not make direct contact with burning files, the risk of poor burning caused by manual operation is reduced, and the reliability of chip burning is improved.

A method for performing production engineering tasks includes receiving a question or instruction related to an oil and / or gas industry. The question or instruction is received by a large language model (LLM) agent. The method also includes selecting one or more tools from a plurality of tools using the LLM agent based upon the question or instruction. The tools include a data tool, a retrieval augmented generation (RAG) tool, a simulation tool, and an analytical tool. The method also includes generating output data related to the question or instruction using the one or more identified tools. The method also includes generating a response to the question or instruction using the LLM agent based upon output data.

The present application relates to a kind of pumping unit polish rod wellhead sealing method, pumping unit sealing packing, belong to oilfield production engineering technical field.The polish rod wellhead sealing method of pumping unit of the present application, comprising the following steps: take annular washer and put into wellhead packing box cavity bottom on polish rod, then in packing box cavity alternately put into rubber strip and semi-solid lubricant, until to fill up packing seal box, then take annular washer and put into polish rod, install good gland and packing pressure cap, tighten;When putting into rubber strip, make rubber strip surround polish rod and place and in packing box cavity fill up a layer.The polish rod sealing method of pumping unit of the present application, completely solve the problem of difficult to add and take when replacing packing packing, reduce the labor intensity of post worker, especially applicable to the oil well of on-site polish rod not centering, and sealing effect is good, can effectively manage packing running, leaking and leaking phenomenon, reduce wear and tear, extend the use cycle of packing, realize the purpose of cost reduction and efficiency increase and energy saving and environmental protection.

The invention belongs to the technical field of oil and gas field development, and provides a model library construction method based on digital twin injection-production engineering. Comprising the steps of integrating an injection-production engineering physical entity model, reconstructing a physical three-dimensional model of a physical entity, defining attributes of the physical three-dimensional model, embedding a formula algorithm, developing an interface, realizing data interaction and visual modeling, and displaying a production state. Boundary conditions are defined based on the physical three-dimensional model, simulation software is imported to form a simulation model, the accuracy of the simulation model is verified through comparison with actual data, and an interface is constructed for a user to operate and test the injection-production process; packaging to form a directly called engineering application component, a feature engineering component and a tool component supporting knowledge reuse; and integrating a plurality of injection-production engineering optimization algorithms by utilizing an algorithm interface, and constructing a water injection optimization and oil production quantity dynamic regulation and control model in combination with empirical rules and optimal practices of an injection-production process. According to the invention, an injection-production engineering digital twinborn model library which can realize efficient modeling, accurate simulation and optimization and a flexible and extensible system is established.

The invention belongs to the technical field of oil and gas well gas production engineering, and particularly relates to a gas lift process and a gas lift device. The gas lift technology comprises the following steps that S1, at least one gas lift device is connected to an oil pipe in series and is put into a position, flooded by water, in a well, and the lower end of the oil pipe is in a closed state; s2, a pipeline is tripped into the oil pipe, and the lower end of the pipeline at least reaches the position, flooded by water, in the well; and S3, gas is pumped into the pipeline or the annulus of the pipeline and the oil pipe.

The invention relates to the technical field of oil field oil production engineering, in particular to a self-adaptive plugging plug for large-scale fracturing and a control system.The self-adaptive plugging plug for large-scale fracturing comprises a plurality of plugging units, and each plugging unit comprises a plugging shell and a plurality of main plugging balls; a plurality of main plugging balls are located in the plugging shell. After fracturing operation of a stratum section where the target fracturing hole is located, the plugging shell is clamped to an inlet of the target fracturing hole for initial plugging; and after the plugging shell is broken, the main plugging ball is released, the main plugging ball can enter the target fracturing hole under the action of the pressure of the fracturing fluid, and fluid channeling of the fracturing fluid is further blocked. Therefore, only the soluble bridge plugs need to be arranged at the two ends of a large section formed by multi-section fracturing, the spacing distance between the two soluble bridge plugs is greatly prolonged, and therefore the total usage amount of the soluble bridge plugs is reduced, the operation time is shortened, the well jamming and blocking risks caused by midway setting are avoided, and the construction safety is improved.

The invention discloses a production project completion commissioning research and judgment method and device based on a large model, a storage medium and computer equipment. The method comprises the steps of obtaining production project total data of different power projects from a plurality of production project management systems; the production engineering management system comprises a production management system, a risk control platform, a financial system, a material management system and a document management system. Integrating the production project total data through a pre-trained large model to form a production project data set of each electric power project; the production project data set corresponding to each electric power project is analyzed to determine whether each electric power project has completion and production state abnormity or not, and the completion and production state abnormity comprises false completion, uncompleted first settlement and completion unreported.

The present application relates to the technical field of oilfield production engineering, and particularly relates to a wellbore plugging agent evaluation method and a wellbore sealing integrity evaluation device. The present application mainly solves the problem that the existing wellbore plugging agent evaluation method cannot evaluate the performance of the plugging agent under the working conditions of high pressure, high CO2 and other acid gas wells. The present application comprises the following steps: selecting a plurality of plugging agents with different formulations according to the working conditions of the experimental area, and respectively performing basic performance testing, injection performance testing, interfacial cementation strength evaluation and corrosion performance evaluation; performing long-term corrosion resistance experiment on the plugging agent; and using the wellbore sealing integrity evaluation device to perform full-size wellbore sealing integrity evaluation experiment on the plugging agent. The wellbore plugging agent evaluation method optimizes different plugging agents through laboratory experiments, and simulates the actual production conditions through full-size experiments, so as to finally screen out the plugging agent that meets the field working conditions, thereby providing guarantee for efficient treatment of gas wells.

The application relates to a silk screen printing normalization management method and device, computer equipment and a storage medium. The application corresponds to a multifunctional interface silk screen printing set of silk screen printing instruction information. When a target component is connected to the multifunctional interface, the configuration information of the target component is read, the silk screen relationship corresponding to the configuration information of the target component is parsed, target silk screen graphic information corresponding to the silk screen relationship is acquired, the target silk screen graphic information is displayed, and when a server is maintained, the corresponding configuration information corresponding to the function can be accurately acquired based on the displayed target silk screen graphic information. Moreover, the silk screen printing instruction information set refines the function corresponding to the configuration information, realizes unified silk screen printing, reduces the silk screen printing management difficulty, saves hardware cost and management cost, the number and types of managed structural parts in production engineering are greatly reduced, the project material management difficulty and cost are reduced, the risk of assembly errors is reduced, and the maintenance efficiency is improved.

This invention discloses a method for accurately calculating the opening degree of a fluid control valve based on numerical simulation, relating to the field of oil and gas exploration and development technology. The method includes the following steps: establishing a simplified numerical simulation model of the fluid control valve and obtaining fluid rheological parameters; simulating the oil and gas production of a single-layer fluid control valve under different pressure differentials and evaluating its throttling performance; using a horizontal throttling orifice to simulate the pressure drop in the horizontal section of a multi-layer fluid control valve; establishing a numerical simulation model of the multi-layer fluid control valve; analyzing the influence of different valve distances, different formation pressures, and the opening degree itself on the opening degree; and programming the relationship between valve distance, pressure differential, and opening degree to obtain the throttling orifice opening size under balanced production conditions. This invention is simple and effective, with high reliability and feasibility, providing a concept and reference for practical production engineering.

The present application relates to the technical field of oilfield production engineering, in particular to a full-bore unlimited-stage fracturing sliding sleeve for horizontal wells, comprising a switching mechanism and a plurality of execution mechanisms, which jointly constitute a channel for fracturing fluid flow; the execution mechanism comprises an upper joint and a lower joint; the lower joint is provided with a fracture one, which is in communication with the channel; the inner side of the lower joint is provided with an inner cylinder; the inner cylinder is provided with a fracture two; under the action of the switching mechanism, the inner cylinder can slide along the axial direction and has corresponding first and second positions before and after sliding; when in the first position, the fracture two and the fracture one are axially misaligned; when in the second position, the fracture one and the fracture two are in correspondence and communication, and the inner cylinder and the lower joint form a stop cooperation, which facilitates the fracturing of the well section of the horizontal well; after the fracturing is completed, the special structure of the switching mechanism and the execution mechanism enables the switching mechanism to automatically adapt to different execution mechanisms and to perform multiple fracturing on the same well section of the horizontal well.

The application discloses a casing-cement ring interface stress monitoring device and method, characterized in that the device comprises a pressure-bearing temperature control chamber formed by a thermocouple, a pressurizing valve and a pressure releasing valve, a cement ring formed by an annulus between an inner casing and an outer casing, a casing-cement ring interface stress monitoring system formed by a pressure receiving device, a high-precision sensor and a pressure collecting device, and the casing-cement ring interface stress monitoring system can directly measure the stress of the casing-cement ring interface during cement slurry solidification and under different working condition changes after the cement ring is formed, and realizes stress monitoring of the casing-cement ring interface in the whole life cycle. The application is suitable for the technical field of oil and gas drilling and production engineering.

The present application relates to the field of prefabricated component production engineering, and particularly discloses a multifunctional material distribution system, which comprises a lower fixing frame, an upper fixing frame, a material distributor, a feeding device and a transmission device, the upper fixing frame is arranged above the lower fixing frame, the material distributor is arranged in the lower fixing frame, and the left side of the material distributor and the left side of the feeding device are respectively fixedly connected with the transmission device, the lower fixing frame, the storage shell, the fixing plate, the stirring motor, the belt pulley, the belt, the stirring shaft, the stirring blade, the discharging pipe, the storage pipeline, the feeding cylinder, the piston, the material distribution pipe, the fixing shell, the mounting frame, the discharging cylinder, the material blocking plate and the discharging valve are arranged in the multifunctional material distribution system, raw materials can be evenly laid in a building prefabricated component production mold, the raw materials are evenly distributed, the raw materials can be laid flat by slight vibration, the discharging amount can be accurately controlled according to the sizes of different components, the secondary material supplement operation of workers is reduced, the production is formed into a production line, and the production efficiency is improved.

The utility model discloses a raw material mixing device for producing a thermal insulation material, which comprises two side plates, the lower ends of the two side plates are fixedly connected with supporting devices, a reaction barrel main body is arranged between the two side plates, a moving plate is arranged between the two side plates, and the moving plate is fixedly connected with the supporting devices. The moving plate and the reaction barrel main body are connected through a limiting device, lifting devices are arranged on the opposite side walls of the two side plates in a penetrating mode, a stirring device is fixedly connected between the two side plates, and a discharging pipe is fixedly communicated with the lower end of the reaction barrel main body in a penetrating mode. A base is arranged below the reaction barrel main body, and a placement groove is formed in the upper end of the base in a penetrating manner. The utility model has the advantages that the production engineering can be simplified by operators conveniently, and the parts can be washed conveniently.

The invention discloses a flame tube flanging simulation piece test fixture, which comprises an upper pressure head assembly, a lower support platform and two groups of support positioning seats detachably positioned and mounted on the lower support platform. The upper pressure head assembly is used for being connected with an upper chuck of test equipment, and the lower supporting platform is used for being connected with a lower chuck of the test equipment. The two groups of supporting and positioning seats are oppositely arranged at intervals and are used for cooperating to stably support and position a to-be-tested flame tube flanging simulation piece, and the upper pressure head assembly is used for stably, eccentrically and downwards pressing the simulation piece supported on the two groups of supporting and positioning seats so as to carry out an eccentric three-point bending test and a downwards pressing fatigue test on the simulation piece. One set of clamp can meet the requirements of eccentric three-point bending and pressing fatigue tests of a flame tube flanging simulation piece at the same time, meanwhile, universal tests of the test pieces can be achieved by replacing different supporting and positioning bases, it is guaranteed that composite acting force except bending cannot be generated when the simulation piece is loaded, and the flame tube flanging simulation piece is suitable for being applied to actual production engineering.

The invention relates to the technical field of oil field oil production engineering, in particular to a high-speed motor pump test calibration device and calibration method. The problem that a high-speed motor pump in an existing hydraulic actuator cannot be independently tested before being assembled is mainly solved. The test box (3) is provided with a plurality of testers (4), each tester (4) comprises a lower pressure-bearing cylinder (413), the upper part of the lower pressure-bearing cylinder (413) is connected with a test cylinder (405), the upper end of the test cylinder (405) is connected with a gland (404), the side wall of the test cylinder (405) is respectively connected with an electric appliance joint (406) and an oil path joint (407), the bottom of the lower pressure-bearing cylinder (413) is provided with an oil path outlet (416), and the side wall of the lower pressure-bearing cylinder (413) is connected with a pressure gauge (415). According to the high-speed motor pump testing and calibrating device, the high-speed motor pump in the hydraulic actuator can be independently tested before the hydraulic actuator is assembled, the guiding precision of the assembled hydraulic actuator is guaranteed, and the working efficiency is improved.

The utility model relates to oilfield production engineering technical field especially relates to a pumping unit horse head centering detection device. The utility model discloses pumping unit horse head centering detection device includes: fixed plate, projection pen, projection adjusting plate, locking bolt, base, slide, front pressing plate, rear pressing plate and screw bolt. The base is fixed position through screw bolt connection front pressing plate and rear pressing plate, and fixed plate magnetism connects the base, and projection adjusting plate is connected with fixed plate through the pivot, is equipped with the recess fixed projection pen on projection adjusting plate, and projection adjusting plate can be fixed lifting height through the locking bolt setting of slide. The utility model provides the centering detection device, can be realized when pumping unit horse head is not centered, through adjusting the fixed plate and projection pen of this device, and the position of horse head is compared with projection beam, and the adjustment situation of conveniently observing horse head centering is reached, thereby reaching once finishing adjustment operation, avoiding multiple climbing and unloading horse head, leading to the problem of low work efficiency, increased operation risk.

The present application provides a coiled tubing drag type mechanical variable segment fracturing process, relates to the oil field production engineering technical field. The coiled tubing drag type mechanical variable segment fractuating device, including casing, characterized by: the inside of the casing is provided with coiled tubing, the coiled tubing is sequentially connected with mechanical fracturing packer, first stage jetting and sealing integrated packer, second stage jetting and sealing integrated packer, third stage jetting and sealing integrated packer, hydraulic anchor and safety joint from bottom to top, the lower part outside of the casing is provided with lower anchoring mechanism. Through the integrated design of sand blaster and packer, the card distance conversion is started by the ball throwing mode, the whole is easy to implement, the operability is strong, and the whole pipe string can meet the different card distance change demand of the whole well, the effectiveness and pertinence of single pipe string fracturing are improved, it is a kind of fine, environmental protection, efficient fracturing technology.