60 results about "Oil well control" patented technology

The present disclosure belongs to the field of offshore oil, and in particular relates to a method for assessing the safety integrity level of offshore oil well control equipment. The method for assessing the safety integrity level of the offshore oil well control equipment comprises three major steps: creating a safety instrumented function evaluation module and dividing the related devices for performing the safety instrumented functions into a sensor subsystem; a controller subsystem and an actuator subsystem, establishing a dynamic Bayesian network model for respective subsystems for calculation; and integrating, analyzing and optimizing the safety integrity data of the subsystems.

The present disclosure belongs to the field of marine engineering, and in particular relates to a method and system for guaranteeing the safety of offshore oil well control equipment. The method comprises: identifying the state of a main structure of the offshore oil well control equipment, identifying the state of a hydraulic control unit of offshore oil well control equipment, identifying the state of an electronic control unit of offshore oil well control equipment, predicting the state of the offshore oil well control equipment and making a real-time decision based on existing information; and the system for guaranteeing the safety of the offshore oil well control equipment comprises a state identification subsystem of a main structure, a state identification subsystem of the hydraulic control unit, a state identification subsystem of the electronic control unit and a state prediction and real-time decision subsystem.

The invention relates to a multifunctional ZnO whisker reinforced stator rubber for a screw pump applied in the fields of oil well control devices, special mechanical equipment and chemistry and chemical engineering. The stator rubber can overcome the defects of low rubber strength, low plasticity and insufficient wear-resisting property and chemical stability. The invention adopts a technical scheme that: the prepared rubber comprises the following raw materials: 65 percent of nitrile-butadiene rubber, 1 percent of sulfur powder, 3 percent of modified nano zinc oxide, 7 percent of modified ZnO whisker, 0.7 percent of antioxidant 264, 20 percent of carbon black, 1 percent of dioctyl phthalate, 0.8 percent of stearic acid, 0.5 percent of accelerator-DM and 1 percent of accelerator-CZ. The rubber product is finally obtained by the technical processes of plastication, mixing and vulcanization molding of the nitrile-butadiene rubber. The rubber is a multicomponent disperse system with thermodynamic stability and isotropy, is difficult to conglomerate, can remarkably improve the strength and the plasticity of the rubber, and is applied in the industries of oilfield well control, the special mechanical equipment and the chemistry and chemical engineering.

The invention belongs to the field of ocean engineering, and particularly relates to a macroscopic elasticity evaluation method and system for offshore oil well control equipment. The macroscopic elasticity evaluation method for the offshore oil well control equipment comprises the six steps of determining the type and strength of external impact, calculating the failure rate of an assembly, calculating the recovery rate of the assembly, modeling a Bayesian network in the degradation process, modeling a Bayesian network in the maintenance process and calculating the elasticity of the offshoreoil well control equipment. The macroscopic elasticity evaluation system of the offshore oil well control equipment comprises an external impact evaluation module, a component failure rate calculationsubsystem, a reliability degradation process simulation module, a fault recognition module, a component recovery rate calculation module, a reliability recovery process simulation module, a reliability change curve exporting unit and an elasticity calculation unit. The elasticity assessment method belongs to macroscopic significance, is not limited by external impact types, solves the problem oferrors caused by failure rate values in the elasticity assessment process, and improves the elasticity value of the system.

The invention belongs to the field of marine engineering, and in particular relates to a safety assurance method and system for offshore oil well control equipment. The safety assurance method for offshore oil well control equipment contains five major steps of status identification of the main structure of the offshore oil well control equipment, status identification of a hydraulic control unitof the offshore oil well control equipment, status identification of an electronic control unit of the offshore oil well control equipment, status prediction of the offshore oil well control equipmentand real-time decision based on existing information. The safety assurance system for offshore oil well control equipment comprises a main structure status identification subsystem, a hydraulic control unit status identification subsystem, an electronic control unit status identification subsystem and a status prediction and real-time decision making subsystem. The safety assurance method and system for offshore oil well control equipment provided by the invention have the main advantages of being able to obtain the real-time status of each component, predict the future state of the offshoreoil well control equipment, and make a real-time decision for the current state and the future state to ensure the rapid decision-making of emergency events.

The invention discloses an automatic blending and controlling system of an oil well binary composite modifying and flooding agent, and relates to an oil well controlling system. The system is composed of a high-pressure water intake pipe system, a polymer feeding device, a crosslinking agent feeding device and an automatic control part, wherein a high-pressure water intake pipeline (1) is sequentially provided with a manual stop valve (2), an electric regulating valve (3), an electromagnetic flow rate meter (4) and a jet device (5); the polymer feeding device consists of a polymer storage tank (9), a spiral feeder (12) and a dry powder hopper (14); the crosslinking agent feeding device consists of a crosslinking agent storage tank (15), a metering pump (18) and a crosslinking agent hopper (19); the automatic control system consists of a man-machine interface unit, a central control unit and a detection unit. The system closes the water injection pipeline and adjusts the water intake flow rate automatically, feeds polymers and crosslinking agent materials automatically, meters automatically and controls the medicine charging time automatically, and achieves oil well intelligent operation and management.

The invention relates to an oil control guiding device for marine oil and gas blowout. The oil control guiding device comprises an oil control guiding cover, a fixed base, an electromagnetic locking device, a guide rail device, a blowout preventer and the like. The fixed base is placed in the seabed in a descending mode, and a clamping disc on the fixed base is quickly clamped on the upper portion of an original ineffective blowout preventer unit through a hydraulic device. The oil control guiding cover and the blowout preventer are guided by a guide rope and placed in the seabed in a descending mode through a drill rod or a marine riser, and meanwhile the electromagnetic locking device is powered on through an underwater battery module installed on the oil control guiding cover. When the oil control guiding cover makes contact with the fixed base, the electromagnetic locking device is powered off, locking plugs are plugged into locking clamping jaws through reset springs, and then the oil control guiding device is installed, injectant connectors are connected with an external injection pipeline, and an inducer and a hydrate inhibitor are injected to increase oil receiving amount and prevent generation of hydrate. When blowout occurs in the deepwater drilling process, the device can quickly control leaked oil and gas and guide the leaked oil and gas to a sea surface oil receiving ship, when the sea surface oil receiving ship evacuates in emergency due to the severe sea state, a leakage opening is quickly closed, and therefore environmental pollution caused by leakage of oil and gas is reduced, and waste of oil and gas resources is reduced.

The invention discloses a drilling mud negative pressure screen which comprises a screen body shell, a mud inlet is formed in the upper end of the screen body shell, a screening device is arranged below the mud inlet and comprises a horizontal soft screen, and the two ends of the screen are wound around a first winding drum and a second winding drum respectively. A plurality of vibration cylinders are arranged between the first winding drum and the second winding drum and located between the two layers of screens, a plurality of negative pressure exhaust pipes are arranged among the vibration cylinders in a crossed mode, and the negative pressure exhaust pipes are connected with a first negative pressure device; a first water receiving disc is arranged below the vibration cylinder and the negative pressure exhaust pipe, and is communicated with a slurry discharging opening in the screen body shell; a conveying belt is arranged below the first winding drum and located above the discharging port. The scheme can enhance oil well control and reduce environmental risks. Completely closed processing is performed, the air negative pressure principle and the conveying belt are adopted, oil mist emission is avoided, noise generated by low-frequency vibration is avoided, and the working environment can be effectively improved.

The invention discloses a connecting device between a side gate and a shell of a ram blowout preventer, which relates to the technical field of the connection between the side gate and the shell of the ram blowout preventer in oil well control equipment and comprises a clamp board mechanism and a connecting part, wherein one end connected with a clamp board is a fastening end, and the other end is a connecting end; the fastening end has a convex plate with an arc-shaped inclined plane; and the connecting end is provided with a bolt pin convex plate. The connecting device resolves the problems of long disassembling operation time and large labor intensity when overhauling or replacing parts. The invention adopts a fast buckle mode and designs a connecting device capable of disconnecting and connecting the side gate from / with the shell of the ram blowout preventer fast, and the connecting device has fast disconnecting and connecting characteristics.

The invention relates to the technical field of oil well control equipment, in particular to a shaft cast-plugging device and a mounting method thereof. The shaft cast-plugging device comprises a cast-plugging barrel which is provided with a hollow barrel cavity, a head end and a tail end corresponding to the head end. A releasing sub is mounted at the head end, and a sealing plug is mounted at the tail end, located in the hollow barrel cavity and made of degradable materials. A blocking mechanism is arranged on the outer surface of the cast-plugging barrel. A blocking part is arranged at the tail end of the shaft cast-plugging device. The mounting method of the shaft cast-plugging device includes the following steps that the shaft cast-plugging device and a setting tool mounted together with the shaft cast-plugging device are placed in a sleeve in an oil well, the shaft cast-plugging device and the setting tool are downwards placed in a predetermined position in the oil well, and the setting tool and the shaft cast-plugging device are separated. According to the shaft cast-plugging device and the mounting method thereof, operation safety and construction efficiency are improved greatly, and the shaft cast-plugging device has the characteristics that operation is easy, the operation cost is low, and the well occupying time is short.

The invention discloses a river facies deposition dispersed oil sand body identification and exploitation method and application thereof, and belongs to the technical field of oil and gas field development. The method comprises the steps of: determining a river facies deposition area based on logging information and seismic data of a drilled well; according to the river facies deposition area, determining the spatial distribution pattern of river facies deposition sand bodies; and determining the distribution of the river facies deposition oil sand bodies according to the spatial distributionpattern of the river facies deposition oil sand bodies; and according to the distribution of the river facies deposition oil sand bodies, adopting a horizontal well exploitation mode, and connecting the river facies deposition oil sand bodies in series for exploitation. According to the method, the dispersed oil sand bodies deposited by the river facies are identified based on the logging information and the seismic data, and then a horizontal well exploitation is adopted, the oil sand bodies with large volume, high reserve and close distance are connected in series along the riverway to be exploited by adopting a horizontal well exploitation mode, so that the exploitation cost can be reduced, the oil well control reserves is increased, and the oilfield development benefits are improved.

Methods and devices for restoring control of at an offshore oil well following an uncontrolled fluid release after an explosion include lowering through a riser of successive flow restricting inserts into the oil well to gradually reduce the uncontrolled fluid release. Flow restricting inserts may be inserted in parallel or in series with each other. Following attachment of the riser to the oil well, provisions are made to restore oil production from the well. Flow restricting inserts may further be used to adjust flow resistance from the well in order to optimize oil production. Passages between the riser and the flow restricting inserts may also be used to form a gas lift in order to maximize production of oil from the well.

A system including a combined plug and valve device that may be precisely delivered to and inserted into an uncontrolled undersea oil well. Once positioned in the well, the device is operated in graduated fashion to anchor the plug to the well and gradually stanch the flow of oil from the well.

The invention provides an oil well control cabinet with a power system control function. The oil well control cabinet comprises a control cabinet shell; the mounting plate is arranged in the control cabinet shell, a controller is laid on the surface of the mounting plate, and the controller is used for controlling an oil well; the mounting groove is formed in the inner wall of the control cabinet shell, and the mounting plate is embedded in the mounting groove; the mounting column is embedded in the mounting groove; and the wire harness storage rod is arranged on the side, away from the mounting groove, of the mounting plate, and a wire harness in the control cabinet shell penetrates through the wire harness storage rod to be connected with the controller. The problems that large vibration can be generated in the operation process of high-power equipment, the oil well control cabinet can be affected by vibration, and if various controllers or modules are installed in the control cabinet and vibration is large, the control modules in the control cabinet can fall off from the inner wall of the control cabinet are solved.

The invention belongs to the technical field of nondestructive detection defect evaluation, and particularly relates to an electromagnetic regulation and control detection method and system for structural defects of offshore oil well control equipment. According to the electromagnetic regulation and control detection method and detection system for the structural defects of the offshore oil well control equipment, crack multi-feature signals are obtained through amplitude-frequency phase regulation and control of electromagnetic excitation signals, angle information of cracks is obtained by means of a residual network, and accurate identification of crack length and depth information is achieved; and the service life prediction network realizes effective prediction of the residual fatigue life. The detection system comprises a monitoring probe, an excitation signal generation unit and a monitoring signal processing and collecting unit, the monitoring probe consists of an exciting coil group, an array sensor and a front-end signal processing circuit; the excitation signal generation unit comprises a signal generator and a power amplifier; the monitoring signal processing and collecting unit comprises a multiplexing and amplifying filter circuit, a band-pass filter circuit, a phase-locked amplifying circuit and a signal collecting board card.

An oil well control device automatically shuts in a well responsive to the removal of a work string (or other removable structure—ball retarding structure) from the device. The device is placed in the well as a section of the well casing. The device provides a pair of bores, one that aligns with the well bore or well casing, the other being a branch flow line containing a ball structure that will close the well if the drill pipe or drill string is removed. While conducting normal well activity (e.g. drilling, work over or the like) the ball retarder (e.g. work string) prevents entry of the ball structure into the main flow channel.

The invention provides an intelligent blowout preventer, a wellhead device and a blowout prevention method. The intelligent blowout preventer is applied to the same-well injection-production process of a horizontal well containing an oil well controller. The device comprises a shell with a cross-shaped channel, the cross-shaped channel is composed of horizontal channels and a vertical channel for a polish rod to penetrate through, and the device further comprises two flashboards which are symmetrically installed in the horizontal channels on the two sides relative to the vertical channel. The two hydraulic cylinders are mounted on the shell and are used for pushing and pulling to enable the two gate plates to face each other to seal the polish rod or to deviate from each other to be separated from the polish rod; a locking structure is mounted on a cylinder barrel of the hydraulic cylinder; a digital sensor used for receiving instructions of an oil well controller is arranged on the locking structure, and the digital sensor drives the hydraulic cylinder to open or cut off the vertical channel. When high-pressure water in a casing pipe flows into a low-pressure oil pipe, the digital sensor can cut off a channel where a polish rod is located in time, and a horizontal well is stopped immediately; during normal production, the intelligent blowout preventer can ensure that a channel where the polish rod is located is kept unblocked.

Methods and devices for restoring control of at an offshore oil well following an uncontrolled fluid release after an explosion include lowering through a riser of successive flow restricting inserts into the oil well to gradually reduce the uncontrolled fluid release. Flow restricting inserts may be inserted in parallel or in series with each other. Following attachment of the riser to the oil well, provisions are made to restore oil production from the well. Flow restricting inserts may further be used to adjust flow resistance from the well in order to optimize oil production. Passages between the riser and the flow restricting inserts may also be used to form a gas lift in order to maximize production of oil from the well.

A system, method and apparatus for speech based control of an oil well control system.

The invention relates to an oil field steam channeling detecting device which comprises a detector. A wireless signal projector is installed on the detector. The detector is connected with a steam channeling detector through a wire. A solar support and an oil well controller are installed on the detector. A solar collecting plate, a solar converter and a storage battery are installed on the solarsupport. The detector is connected with the oil well controller, the solar converter and the storage battery. The solar collecting plate is a dye-sensitized solar battery. The dye-sensitized solar battery comprises a light anode, an opposite electrode opposite to the light anode, and an electrolyte with which the space between the light anode and the opposite electrode is filled. The light anode comprises an FTO conductive substrate. A TiO2 composite thin film is arranged on the surface of the FTO conductive substrate. A Fe metal net is embedded in the TiO2 composite thin film. The TiO2 composite thin film is formed by silk-screen printing TiO2 composite slurry on the surface of the FTO conductive substrate.

The invention belongs to the field of marine oil and specifically relates to a safety integrity level evaluation method for marine oil well control equipment. The safety integrity level evaluation method for the marine oil well control equipment comprises the following three steps: creating a safety instrument function evaluation module and dividing related equipment executing a safety instrumentfunction into a sensor subsystem, a controller subsystem and an executor subsystem, respectively building a dynamic Bayes network model of each subsystem and calculating, and synthesizing safety integrity data of the subsystems and performing optimization analysis; and in a process of building the dynamic Bayes network models, fully considering influence of structural configuration of the marine oil well control equipment, connection relations among all the units as well as degeneration maintenance inspection parameters on an evaluation process. The method provided by the invention has the main advantages that a safety instrument system is divided into multiple safety instrument function modules to be evaluated, and the safety integrity data is quantitatively calculated by adopting a dynamic Bayes network method, so that data is more detailed and accurate.

The invention discloses an oil well working condition fault early warning method and system, and relates to the technical field of oil well control. According to the technical key points, the method comprises the following steps: firstly, extracting a 10-dimensional feature vector of oil well production data, and identifying an oil well which may have a fault through a fault early warning model based on improved fuzzy C-means clustering by using the 10-dimensional feature vector, according to the improved fuzzy C-means clustering algorithm, by purposefully selecting an initial clustering center and improving a target function, the defect that an FCM clustering algorithm is prone to falling into local optimum is overcome, and meanwhile the separation between the clustering centers is ensured; furthermore, a global search method-firefly algorithm is added on the basis, a calculation method of the clustering center is optimized, and a global optimal solution can be effectively found. The oil well fault can be timely and accurately found and treated in time, manual inspection is not needed, the working efficiency is improved, and management and supervision are facilitated.

The invention discloses an intelligent anti-shaking multifunctional oil well control cabinet, and relates to the technical field of control cabinets; the intelligent anti-shaking multifunctional oil well control cabinet has the advantage that shaking of the control cabinet due to external vibration is reduced, the intelligent anti-shaking multifunctional oil well control cabinet comprises a damping table arranged at the lower end of a cabinet body, the damping table is provided with an embedding groove allowing the lower end of the cabinet body to be embedded, and the embedding groove is a circular groove; a plurality of circular placing grooves are formed in the groove bottom of the embedding groove along the circle center of the embedding groove in an array mode, balls are placed in the placing grooves, the upper ends of the balls extend out of groove openings of the placing grooves and abut against the lower end face of the cabinet body, and arc-shaped abutting plates located on the periphery of the cabinet body are arranged on the groove wall of the embedding groove; and each abutting plate is provided with a first compression spring, and the end, away from the corresponding abutting plate, of each first compression spring is connected with the groove wall of the corresponding embedded groove.

A modular centralized oil well control cabinet include a magnet block, Cabinet door, seal strip, Viewing window, connection hinge, A main cabinet body, a fixed iron sheet, an intermediate beam, a first-level transverse plate, a second-level transverse beam, a third-level transverse beam, a distribution box module, an electrical component mount box module, a distribution row module, a height-adjustable sunshade cover structure, a height-adjustable rotate bar structure, a transverse plate, a shock-absorbing cushioning protection bar structure and a base, wherein that magnet block is longitudinally screwed to the middle position on the left side of the cabinet door; The sealing strip is glued at a position around the inner surface of the cabinet door. As that shock absorb buffer rod, the buffspring, the fixing seat, the fixing pipe, the retaining ring, the supporting leg and the connecting seat are arranged, the problem that the oil well control cabinet is easy to sway and easily damagesthe internal devices in case of an emergency is solved, and the shock absorber has a good cushioning and shock absorbing protection effect; The rubber protective sleeve is arranged so as to avoid thebuffer spring from being washed by the rainwater, and can play a protective role.

The invention provides an oil well control cabinet with power system control, comprising: a control cabinet shell; For controlling the oil well; the installation groove, the installation groove is set on the inner wall of the control cabinet shell, the installation plate is embedded in the installation groove; the installation column, the installation column is embedded in the installation groove; the wire harness receiving rod, the The wire harness storage rod is arranged on the side of the installation plate away from the installation groove, and the wire harness in the control cabinet shell passes through the wire harness storage rod to connect with the controller. It solves the problem that high-power equipment will generate large vibration during operation, and the oil well control cabinet will be affected by the vibration. There are various controllers or modules installed inside the control cabinet. If the vibration is large, the internal control module may fall off from the inner wall of the control cabinet The problem.

The present application belongs to the technical field of nondestructive testing and defect evaluation, and particularly relates to a marine oil well control equipment structural defect electromagnetic regulation and control detection method and a detection system. The marine oil well control equipment structural defect electromagnetic regulation and control detection method and the detection system obtain crack multi-feature signals through electromagnetic excitation signal amplitude-frequency-phase regulation and control, obtain crack angle information with the aid of a residual network, and realize accurate identification of crack length and depth information. A service life prediction network is used to realize effective prediction of residual fatigue life. The detection system comprises a monitoring probe, an excitation signal generation unit and a monitoring signal processing and acquisition unit. The monitoring probe is composed of an excitation coil group, an array sensor and a front-end signal processing circuit. The excitation signal generation unit comprises a signal generator and a power amplifier. The monitoring signal processing and acquisition unit comprises a multiplexing and amplification filtering circuit, a band-pass filtering circuit, a phase-locked amplification circuit and a signal acquisition board.

The invention belongs to the technical field of ocean engineering equipment detection, and particularly relates to an intelligent fault diagnosis method for digital twin-driven offshore oil well control equipment. According to the intelligent fault diagnosis method, the continuous optimization of the fault diagnosis model is realized, and the long-term stable and reliable effect of the fault diagnosis process is ensured. The intelligent fault diagnosis method for the digital twin-driven offshore oil well control equipment comprises the following steps: screening to obtain a fault diagnosis model used in an intelligent fault diagnosis process, and updating and adjusting the fault diagnosis model; acquiring real-time operation data of the offshore oil well control equipment to be subjected to fault diagnosis, and performing initial fault diagnosis on the offshore oil well control equipment by using the screened fault diagnosis model used in the intelligent fault diagnosis process; according to the result of the initial fault diagnosis, performing parameter updating on the digital twin model corresponding to the offshore oil well control equipment to be subjected to fault diagnosis; and based on the digital twinborn model after parameter updating, performing fault verification and re-diagnosis on the offshore oil well control equipment to be subjected to fault diagnosis.

The invention discloses a wellhead safety three-valve control integrated module. The wellhead safety three-valve control integrated module comprises a first valve block, a second valve block, a thirdvalve block, a fourth valve block and a fifth valve block which are adjacently connected together, the contact surfaces of the adjacent surfaces of the first valve block, the second valve block, the third valve block, the fourth valve block and the fifth valve block are consistent in size, through holes are formed in the four corners of the first valve block, the second valve block, the third valve block and the fourth valve block correspondingly, threaded holes are formed in the four corners of the fifth valve block, and four bolts penetrate through the through holes in the first valve block,the second valve block, the third valve block and the fourth valve block to be connected to the threaded holes to fix the first valve block, the second valve block, the third valve block, the fourthvalve block and the fifth valve block. According to the wellhead safety three-valve control integrated module provided by the invention, a plurality of valves are integrated, the space is effectivelyutilized, the structure is simple and reasonable, maintenance is convenient, control is convenient, and the wellhead safety three-valve control integrated module is especially suitable for controllingdownhole safety valves, ground wing valves and ground main valves in natural gas well and oil production well control systems.

According to the green low-carbon intelligent group control method and system for the oil extraction system, an existing oil well control system is improved and effectively fused with a solar system, a buffer device is provided for a common direct current bus technology, meanwhile, solar energy serves as supplementary energy, and the utilization rate of electric energy and the emission index of well site carbon are effectively increased. Intelligent optimization of the whole well site is achieved based on well site intelligent control, the purpose of collaborative optimization of energy and production targets is achieved, possibility is provided for energy-saving and efficient production of crude oil, meanwhile, a security control system is combined, system safety is effectively improved, and potential safety hazards of the well site are reduced.

The present invention relates to a flow control screen for an oil well, which has an adjustable flow conductivity. The flow control screen of the present invention includes one or more fluid valves, each of which has a respective predetermined opening threshold and is configured to open when the fluid pressure difference between the fluid pressure on the first side of the fluid valve and the fluid pressure on the second side of the fluid valve is greater than or equal to the respective predetermined opening threshold, so as to open the corresponding fluid channel. The present invention also relates to an oil well structure having the flow control screen, a method for operating the oil well structure, and a method for modifying the oil well structure.