29 results about "Petroleum industry" patented technology

This article pertains to the petroleum industry, specifically relating to a method, device, and equipment for overflow risk early warning based on single-hole gas monitoring. The method includes: real-time collection of drilling data, including drill bit position, well depth, total hydrocarbon content, and drill string height; determining the drill bit position when the drill string is pulled up based on the collected drilling data; determining the location data of the risky well section and the location data of the first section to be monitored based on the drill bit position and single drill string length; determining the location data of a single connecting section based on the location data of the single connecting section and the risky well section; monitoring for single-hole gas anomalies based on total hydrocarbon content data obtained at the location of the first section to be monitored; and determining whether to send an overflow risk warning based on the single-hole gas anomaly. This article solves the problems of high cost and poor effectiveness in overflow risk monitoring during drilling.

The application provides a seamless steel pipe automatic drilling equipment and method, and relates to the technical field of petroleum industry. The equipment comprises a working unit, a first feeding unit and a discharging unit. The working unit comprises a supporting part, a drilling part and a drill rod part in sequence. The supporting part is used for supporting and conveying the oil pipe to be drilled. The drilling part is used for clamping the oil pipe to be drilled. The drill rod part is used for extending the drill rod into the oil pipe on the supporting part. The relative extrusion and rotation between the oil pipe and the drill rod are used to realize the drilling of the oil pipe. The first feeding unit and the discharging unit are respectively arranged on the two sides of the supporting part. The application provides a seamless steel pipe automatic drilling equipment and method. The traditional working mode is upgraded from manual work to full-automatic work. The whole process does not need manual participation, the labor intensity of the operator is reduced, the working efficiency is improved, and the working safety is enhanced.

This application provides a method, system, equipment, medium, and product for optimizing crude oil supply chain scheduling, relating to the field of petroleum industry chain optimization technology. The method involves: determining a target operations operator based on current state information; determining the target inventory level and target inventory penalty function for each node in the crude oil supply chain based on current inventory levels and the target operations operator; determining the objective function of a mathematical programming model using a preset oil transportation cost function and the target inventory penalty function; determining a production scheduling plan for the day based on current inventory levels and the objective function; executing the production scheduling plan for the day to obtain daily cost information; determining a reward function for the day based on the daily cost information; obtaining the daily reward function for each day within a preset time period; accumulating the daily reward functions within the preset time period to obtain the accumulated reward function; if the accumulated reward function value is not the maximum value, using a backpropagation algorithm to adjust the parameters to obtain an adjusted reinforcement learning layer.

This utility model relates to the field of wastewater adsorption and sedimentation technology, and discloses a combined petroleum wastewater adsorption and sedimentation mechanism, including a support frame. A water-carrying tank plate is fixedly connected to the top of the support frame, a trapezoidal plate is fixedly connected to the bottom of the water-carrying tank plate, a connecting pipe is fixedly connected to the bottom of the trapezoidal plate, a fixing plate is fixedly connected to the top of the water-carrying tank plate, and a first support plate is fixedly connected to the side wall of the fixing plate. Multiple adsorption cylinders are slidably connected inside the first support plate, and a rotating block is fixedly connected to the outer wall of each adsorption cylinder. In this utility model, pulling the limiting column disengages it from the empty tank plate and the rotating block, and rotating the adsorption cylinder drives the rotating block, which can pull the adsorption cylinder out of the first support plate. This solves the problem that replacing adsorption cylinders requires stopping the machine for disassembly, causing the treatment process to be interrupted, especially in the continuous production of the petroleum industry, which affects the overall wastewater treatment efficiency, and improves the convenience of the petroleum wastewater adsorption and sedimentation mechanism.

This invention relates to the field of oilfield development technology in the petroleum industry, and proposes a segmented metal patching tool suitable for pressurized operations. It includes a multi-stage hydraulic assembly with internal and external hydraulic channels. A patching component is installed at each of the upper and lower ends of the multi-stage hydraulic assembly. The internal channel drives the two sets of patching components to connect downhole, while the external channel drives the two sets of patching components for expansion patching. This invention employs a segmented patching pipe design and an automatic downhole connection principle between the upper and lower patching pipe sections. While ensuring the tool's safety factor is not reduced, it improves the tool's applicability and provides convenient application conditions for the implementation of CCUS (Continuous Cornering System) old well remediation. It has significant economic and social benefits and enormous potential for widespread adoption.

This invention relates to the field of oil and gas production engineering in the petroleum industry, and discloses a downhole throttling structure and a gas production method based on the structure. The downhole throttling structure includes: a mounting base for fixed connection with a gas pipe, the mounting base having a first inner cavity; and a downhole throttling device fitted within the first inner cavity, the outer wall of the downhole throttling device being connected to the side wall of the first inner cavity by a pin; wherein the pin is capable of breaking under external force, thereby disrupting the connection between the downhole throttling device and the mounting base. The detachable mounting base and downhole throttling device structure can simultaneously meet the process requirements of throttling production and the plunger gas lift stage, significantly reducing the time required for the corresponding process layout, improving production efficiency, and reducing process costs.

The present invention relates to the field of fracturing operations in the petroleum industry. Disclosed are a filtration device, a valve and a fracturing fluid tank. The filtration device comprises a filter cartridge, a cleaning assembly and a storage assembly, wherein a filter screen is provided inside the filter cartridge. The cleaning assembly comprises a detection member, a cleaning member and a loosening member which are arranged in the filter cartridge, wherein the detection member is used to measure the pressure of fluid flowing through the filter cartridge, and is configured such that: when same detects that the pressure of the fluid flowing through the filter cartridge is greater than a first preset pressure, the cleaning member cleans the filter screen, and when same detects that the pressure of the fluid flowing through the filter cartridge is greater than a second preset pressure, the loosening member acts on the filter screen, such that impurities clogging the filter screen are loosened. The storage assembly comprises a storage box arranged at the bottom of the filter cartridge, wherein the storage box is configured to receive the impurities cleaned off by the cleaning member. On the basis of the filtration device provided in the present invention, the phenomenon of a blockage in a fluid supply channel caused by impurity accumulation can be prevented, thereby ensuring the fluid delivery effect.

The subject invention provides multi-functional biochemical compositions, as well as their use in enhancing oil recovery from an oil-bearing subterranean formation. Advantageously, the compositions and methods of the subject invention are operationally-friendly, cost-effective, and environmentally-friendly. More specifically, in preferred embodiments, the subject invention provides a multi-functional composition for enhanced oil recovery (EOR) comprising one or more surfactants, one or more chelating agents, and one or more solvents.

This invention provides a question-answering intelligent agent system and its construction method based on knowledge enhancement of oilfield inspection defect images, belonging to the field of petroleum industry equipment defect detection and operation and maintenance decision support technology. The solution adopts a closed-loop process of dual-source data processing, dual-model image knowledge extraction, heterogeneous graph knowledge graph construction, knowledge graph retrieval, large-scale model knowledge enhancement, and multimodal question-answering interaction, forming six core functional modules, and making targeted improvements to address the shortcomings of existing technologies. Relying on computer vision, natural language processing, knowledge graphs, and large-scale model technologies, through core designs such as image target localization, knowledge feature fusion, and model fine-tuning loss calculation, it achieves integrated realization of visual knowledge extraction, structured organization, and knowledge enhancement question-answering for oilfield defect images. This invention can provide operation and maintenance personnel with accurate and professional defect answers and handling decision support, significantly improving the intelligence and efficiency of oilfield inspection defect analysis and operation and maintenance decision-making.

The present application relates to the technical field of downhole operation of petroleum industry, and particularly relates to a kind of anti-overflow positive and negative well washing device.The anti-overflow positive and negative well washing device comprises a cylinder for connecting with a pipe column, the cylinder extends along the up-down direction, a valve cylinder extending along the up-down direction is arranged in the cylinder, an annular channel with an open upper end and a closed lower end is formed between the valve cylinder and the cylinder, a communication channel is arranged on the cylinder wall of the valve cylinder and communicates the annular channel and the inner cavity of the valve cylinder;the lower end of the valve cylinder is provided with an inner ring table, a compression spring and a valve seat reciprocally movable along the up-down direction are arranged in the valve cylinder, the valve seat has a valve seat channel penetrating along the up-down direction, the compression spring is above the valve seat to apply downward pressure to the valve seat, and in turn the valve seat presses on the inner ring table;the cylinder is provided with a support structure below the valve cylinder, and a valve ball is supported on the support structure.The anti-overflow positive and negative well washing device can realize oil well positive and negative well washing operation at the same time when realizing anti-overflow.

This invention belongs to the field of petroleum industry technology and relates to a test device and method for evaluating the sealing capacity of titanium alloy oil casing threaded joints. The invention uses a pipe body bearing seat to apply load to the titanium alloy oil casing threaded joint. A liquid chamber contains test liquid to evaluate the sealing capacity of the threaded joint. A drain outlet is used to drain the liquid in the liquid chamber after the test, while an inlet is used to inject test liquid into the liquid chamber. Simultaneously, gas in the gas chamber leaks from the gas-tight section of the joint into the liquid in the liquid chamber and is discharged from the drain outlet. The sealing capacity of the titanium alloy oil casing threaded joint is determined based on the amount of gas leakage. If the sealing capacity of the titanium alloy oil casing threaded joint does not meet the requirements, the thread structure of the titanium alloy oil casing is adjusted, and the experiment is repeated until the sealing capacity of the titanium alloy oil casing threaded joint meets the requirements. This invention can realize experiments under different working conditions, improving experimental efficiency.

The utility model relates to sand washer technical field, concretely is a kind of combined cyclone equal-diameter sand washer for petroleum industry, comprising: combined cyclone equal-diameter sand washer pipe body, the both ends of cyclone equal-diameter sand washer pipe body inner wall are respectively fixedly connected with positioning snap ring and positioning ring; Wear-resistant lining, the both ends of wear-resistant lining outer surface are respectively provided with L-shaped slot and positioning recess, the lower end of wear-resistant lining is provided with counterbore;Connecting bolt, the connecting bolt is located in counterbore, and one end of connecting bolt is screwed with positioning ring. The utility model is provided with wear-resistant lining of convenient and quick replacement installation in the inner wall wear-resistant section of equal-diameter sand washer pipe body, can greatly improve the wear resistance and service life of equal-diameter sand washer pipe body, avoid the construction difficulty of overall replacement pipeline in complex downhole environment, need to consume a large amount of manpower, material resources and time problem.

This invention provides a multi-index fusion pumping unit efficiency evaluation model and production prediction method, relating to the field of oil and gas production engineering technology in the petroleum industry. The method includes the following steps: S1, data cleaning and consistency restoration of historical production data of the pumping unit. S2, constructing a multi-dimensional evaluation model for pumping unit operating efficiency based on a combination of subjective and objective weighting. S3, constructing a daily liquid production prediction model for the pumping unit based on fluid property modification and pump dynamometer mechanism. S4, an optimized control method for pumping unit stroke rate based on multi-objective decision functions and adaptive weight adjustment. This invention, through the dual drive of evaluation and prediction, solves the problems of blind adjustment of pumping unit operating parameters and difficulty in balancing efficiency and production in existing technologies, thereby improving the overall oil production efficiency of the pumping unit and increasing economic benefits.

The present application relates to the technical field of oil production engineering in petroleum industry, and provides a layered water injection pipe column and a maintenance method thereof, the layered water injection pipe column comprising a plurality of water injection pipe column segments, an upper tubing segment and a bottom plugging pipe column segment; the plurality of water injection pipe column segments are sequentially connected from top to bottom through a lower anticorrosion tubing, each of the plurality of water injection pipe column segments comprises a step-by-step unblocking packer and a water distributor connected from top to bottom; the bottom plugging pipe column segment is connected with the lowermost water injection pipe column segment; and the upper tubing segment is connected with the uppermost water injection pipe column segment. The layered water injection pipe column solves the problem of insufficient power in wellhead minor repair operation and pipe column unmovability, thereby improving the success rate of minor maintenance operation of medium-deep separate injection well and avoiding the conversion of medium-deep separate injection well inspection operation into major maintenance.

The present application belongs to the field of petroleum industry, and particularly relates to a method and device for evaluating the storage capacity characteristics of a carbonate rock gas reservoir type gas storage, which comprises: obtaining reservoir characteristic data and to-be-evaluated storage capacity characteristics of a to-be-evaluated gas storage; obtaining an evaluation parameter from a set of storage capacity characteristic evaluation parameters according to the reservoir characteristic data and the to-be-evaluated storage capacity characteristics; the evaluation parameter comprises reservoir pressure corresponding to oil and gas reserves under different reservoir characteristic data, and fracture and hole characteristics corresponding to different reservoir characteristic data; and determining an evaluation result of the storage capacity characteristics of the gas storage according to the reservoir characteristic data and the evaluation parameter. The present application solves or partially solves the problem of how to assist in evaluating the storage capacity characteristics of a carbonate rock gas reservoir type gas storage.

1. Name of the product in this design: Oilfield Container. 2. Intended use of this design: Equipment used in the petroleum industry. 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 relates to a kind of injection-production integrated process pipe column for heavy oil well belongs to downhole operation tool technical field of petroleum industry.The utility model discloses hollow anchoring packer and sealing insert tube;The hollow anchoring packer is anchored and sealed in casing, with a center through hole in its inside;The lower end of the sealing insert tube can be inserted into the center through hole of the hollow anchoring packer, and sealing and anchoring connection is formed with the inner wall of the center through hole.The utility model can realize steam injection and oil production alternate operation without lifting main sealing anchoring component, to reduce operation cost, improve production efficiency.

The application belongs to the field of petroleum industry devices, and discloses a low-voltage intelligent control device for controlling layer-by-layer emptying of residual liquid and collecting liquid samples based on downhole electric control. The device is composed of a sampling module, an electric control module and a liquid discharge module. The device can quickly realize rapid discharge of residual liquid between two seals and rapid pressure drop between the two seals by controlling the opening of the liquid discharge channel on the ground. The device is of great significance for data collection in the initial stage of pressure buildup testing. Compared with the traditional electric control liquid discharge pump and electric control sampler, the device is simple to operate, and the safety performance and reliability are doubled.

The present application belongs to the field of oil production engineering in petroleum industry, and particularly relates to a method and device for determining the support position of oil well casing, aiming at solving the problem of how to determine the support position of oil well casing. The present application comprises: stopping the work of the pumping unit, parking the pumping unit at the top dead center, cutting off the production pipeline and emptying the pressure, and cutting the production pipeline to release the stress; installing the device for determining the support position of oil well casing on the wellhead of the oil well, and calculating the support force; placing two load sensor pads on the bottom surface directly below the pipelines on both sides of the large four-way cross, and placing two jacks on the two load sensor pads respectively; lifting the two jacks at the same time, and stopping lifting the two jacks when the support force displayed on the load sensor pads reaches the calculated support force; rotating the lifting nut until the large four-way cross bottom flange surface is tightened, and then re-welding the production pipeline. The present application accurately determines the support position and support force.

A tight reservoir compressibility evaluation method at logging scale belongs to the technical field of fracturing in downhole operation in the petroleum industry, and comprises the following steps: S1, gamma, density, acoustic data are introduced into the ground stress profile software to obtain the ground stress, Young's modulus and Poisson's ratio parameters, and the horizontal stress difference coefficient, stress quality coefficient and brittleness index factor are respectively calculated according to the formula; S2, the minimum horizontal principal stress is taken as the main control factor of compressibility, and the partial correlation coefficients of the horizontal stress difference coefficient, stress quality coefficient, brittleness index, macroscopic crack factor and the main control factor are measured under the condition of controlling other factors; S3, the compressibility coefficient is obtained by multiplying the values of each influencing factor and the corresponding weight. Through post-pressure test analysis, it is verified that the tight reservoir compressibility evaluation method at logging scale is reliable and simple, and can effectively guide the single well fracturing design.

A test apparatus and method for the flow characteristics of a pressure regulator spray valve covering all flow conditions is disclosed, comprising a main circuit system, a test system, and a water supply system. This application enables automatic switching of the flow meter with the corresponding range based on the measured value, achieving cross-validation of measurement data and continuous, stable, and high-precision measurement. It can simulate the actual operating conditions of the spray valve and measure its flow characteristics under different conditions. It is applicable not only to pressure regulator spray valves but also to regulating valves in wind power, thermal power, chemical, and petroleum industries.

Provided in the present invention is a stable foam control agent having rapid dispersion ability. The foam control agent is mainly used in the petroleum industry, and has the advantages of safety, stability and rapid dispersion ability. A fatty acid ester compound is selected and used in the present invention, and as compared with a traditionally used polyether ester, the fatty acid ester compound has a longer carbon chain and better performance in terms of long-term foam breaking. By adjusting the ratio of an ester compound to a wetting and penetrating agent, the rapid dispersion ability of the foam control agent is improved. A solvent is not contained in the present invention, making the foam control agent safer and more stable, and suitable for long-term storage.

The present application belongs to the technical field of downhole tools in the petroleum industry, and particularly relates to an electrically-controlled releasing packer and a control method. The present application comprises a setting and anchoring packer mechanism, an intelligent storage control mechanism and a releasing fishing mechanism; the setting and anchoring packer mechanism, the releasing fishing mechanism and the intelligent storage control mechanism are sequentially connected from bottom to top. After the electrically-controlled releasing packer of the present application is lowered to a designed position, the packer is set by lifting and lowering the pipe string, at which time the inside of the packer tool is in a sealed and blocked state. Construction is carried out according to the normal fracturing process until the last fracturing is completed. After the last fracturing is completed, the tool is lifted to a certain distance and the packer is set again, after which the annulus is pumped to increase the pressure, a predetermined pressure wave is hit, the annulus is again pressurized after a certain period of time, and the releasing is completed. The well is shut in, the annulus is pressurized after the shut-in is completed, the central passage is opened to release the pressure, and then the fishing device is used to fish the tool, and the operation is completed.

The present application relates to the technical field of oil well treatment agent, and is a high-flash-point oil well paraffin remover, a preparation method and application thereof, wherein the high-flash-point oil well paraffin remover is obtained by the following method: first, adding a dispersing agent and an alkyl sulfonate into trimethylbenzene and stirring uniformly to obtain a reddish-brown liquid; then, adding heavy aromatic hydrocarbon and white oil into solvent oil and stirring uniformly to obtain a light yellow liquid; finally, stirring the reddish-brown liquid and the light yellow liquid uniformly to obtain the high-flash-point oil well paraffin remover. The high-flash-point oil well paraffin remover has a high flash point, a good paraffin dissolving efficiency, and a performance meeting the requirements of the petroleum industry standard, and can safely and efficiently dissolve the paraffin in oil wells, reduce the frequency of well repair affected by wax, improve the production rate of oil wells, and effectively solve the problems of low flash point and poor paraffin dissolving efficiency of the existing oil well paraffin remover.

This invention belongs to the technical field of steel for the petroleum industry, specifically relating to a low yield strength ratio and high strength-toughness coiled tubing steel and its preparation method, particularly suitable for oil and gas extraction in deep wells, ultra-deep wells, and harsh corrosive environments. The chemical composition of the steel is: C, Si, Mn, P, S, Alt, Cr, Mo, Ti, B, Cu, N, O, Pr+Ca: 0.0024%–0.0038%, with B / N = 2.35–5.17, Pr+Ca / S = 1.2–3.8, and the remainder being Fe and unavoidable impurities. The coiled tubing steel provided by this invention features improved burst pressure, resistance to crushing, torsional strength, excellent corrosion resistance, and fatigue life. It also boasts an economical and low-cost composition design.