41 results about "Oil well control" patented technology

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 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 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 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.

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.

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 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.

The invention relates to an oil field steam channeling detection device. The device comprises a detector. A wireless signal transmitter is installed on the detecting machine, and the detecting machineis connected to the steam detector through a wire. A solar bracket and a well controller are installed on the detector. A solar collector panel, a solar energy converter and a battery are mounted onthe solar bracket, and the detector is connected to the well controller, the solar converter and the battery respectively; the solar energy collecting plate is a dye-sensitized solar cell, and the dye-sensitized solar cell comprises a photoanode, a counter electrode and an electrolyte. The photoanode comprises an FTO substrate, a TiO2 composite film disposed on the surface of the FTO substrate; The TiO2 composite film comprises TiO2 nanoparticles, Fe2O3 / CuO / TiO2 composite nanofibers. Specifically, the Fe2O3 / CuO / TiO2 composite nanofibers and the TiO2 nanoparticles are mixed to prepare composite slurry, and the composite slurry is coated on the surface of the FTO substrate by spin coating.