246 results about "Oil production" patented technology

This invention provides a method and computer equipment for determining the dynamic reserves of condensate gas reservoirs, belonging to the field of oil and gas reservoir engineering. The method for determining the dynamic reserves of condensate gas reservoirs includes: acquiring a set of dynamic production data from well pressure measurement of the target condensate gas reservoir; converting the oil production data in the set of dynamic production data to obtain a total converted dynamic production data set of well pressure measurement; acquiring the pseudo-pressure of the target condensate gas reservoir under original conditions; selecting dynamic production data from well pressure measurement at multiple different pressure measurement time points that meet preset conditions to obtain a production indicator curve for the total converted cumulative gas production volume of the target condensate gas reservoir based on the pseudo-pressure; adjusting the production indicator curve for the total converted cumulative gas production volume of the target condensate gas reservoir to obtain an adjusted production indicator curve for the total converted cumulative gas production volume of the target condensate gas reservoir based on the adjusted production indicator curve for the total converted cumulative gas production volume of the target condensate gas reservoir; and calculating the dynamic reserves of the target condensate gas reservoir based on the adjusted production indicator curve for the total converted cumulative gas production volume of the target condensate gas reservoir.

The utility model belongs to lubricating oil production technical field especially, a kind of sealing device for lubricating oil production, including the conveyor for conveying lubricating oil bottle, it is characterized in that, the conveyor top outer wall is welded with mounting bracket, and the mounting bracket top outer wall is welded with the cap blanking rack for conveying lubricating oil bottle cap, the cap blanking rack one end outer wall is fixedly connected with connecting shaft, and the outer wall of connecting shaft is rotatably connected with the bottle cap clamping plate, the bottle cap clamping plate and connecting shaft between fixedly connected with torsion spring. The utility model bottle cap clamping plate and torsion spring cooperate, realize automatic capping at cap blanking rack, avoid artificial deviation of putting cap, and when bottle is conveyed to the lower of portal frame, photoelectric sensor detection signal triggers lift cylinder, drives rectangular frame to descend, spinning plate accurate alignment bottle cap, servo motor drives spinning action, realize automatic capping, solve the problem that traditional equipment is not accurate, manual intervention is more, help to reduce scrap rate.

This invention provides a method, apparatus, equipment, and medium for constructing an oil and gas field production growth curve model, belonging to the field of oil and gas field production evolution technology. The method collects multiple sets of geological reserves, first and second rate coefficients, and cumulative production data for oil and gas fields. Then, it applies the oil and gas field growth differential equation and obtains a growth model for cumulative production through mathematical solution. After the model is converted to a first-order linear form, iterative calculations are used to find at least two sets of data to ensure a linear relationship between the independent and dependent variables. These data are used to determine the slope and intercept of the linear equation, thereby estimating the final recoverable reserves and model constants of the oil and gas field. Finally, combining the rate coefficients and estimated parameters, a growth curve model for predicting the cumulative production of the oil and gas field is constructed. This invention improves the accuracy of oil production prediction by constructing an accurate oil and gas field production growth curve model.

The utility model relates to an electromagnetic valve switch type oil well sound wave oscillation plug removal device, belongs to oil production technology technical field, including oil pipe nitrogen car, hose, oil jacket annulus blow -off groove, first pressure relief electromagnetic valve, oil pipe blow -off groove, second pressure relief electromagnetic valve, oil pipe, sleeve, one -way gas valve, electromagnetic control valve, oscillation sounder, dead plug, oil pipe nitrogen car is connected with oil pipe through hose, sleeve is sleeved in the outer wall of oil pipe, and oil pipe forms oil jacket annulus with the inner wall of sleeve, and oil jacket annulus is connected with oil jacket annulus blow -off groove through first pressure relief electromagnetic valve, and oil pipe is connected with oil pipe blow -off groove through second pressure relief electromagnetic valve, and one -way gas valve is fixed in oil pipe, and oscillation sounder is fixed on oil pipe below one -way gas valve, and the end of oil pipe is connected with dead plug, and the below of one -way gas valve and the above of oscillation sounder form control cavity, and the below of oscillation sounder and dead plug form gas storage cavity, the utility model has big energy, and the big radius of plug removal is effectively realized to the downhole plug removal.

This disclosure belongs to the field of image detection technology and provides an oil leak detection method and device. The method includes: acquiring multiple image frames at different acquisition times of the oil production equipment; obtaining multiple regions of interest (ROI) frames corresponding to the target location from the image frames; extracting interface environment features through a texture feature extraction branch and predicting the oil leak penetration stage based on these features; extracting jet morphology features through a geometric feature extraction branch and predicting the oil leak piercing stage based on these features; and extracting flow reflection features through a physical feature extraction branch and predicting the oil leak flow stage based on these features. Then, the oil leak detection result of the target location is obtained based on the prediction results. By utilizing the different changes in different features of the same oil production equipment image at different oil leak stages, the oil leak stage of the oil production equipment can be identified accordingly, enabling timely and accurate identification of the oil leak situation.

This invention discloses an intelligent oil production system for electric pump wells, a tubing string, and a method of use, relating to the field of downhole communication technology. The system includes a surface control cabinet, an AC carrier cable, a wireless transceiver connector (upper and lower), a DC carrier cable, and downhole intelligent equipment. The surface control cabinet supplies power to the downhole intelligent equipment via the AC carrier cable, the wireless transceiver connector (upper and lower), and the DC carrier cable. The surface control cabinet performs bidirectional AC carrier communication with the wireless transceiver connector (upper and lower) via the AC carrier cable. The wireless transceiver connector performs bidirectional DC carrier communication with the downhole intelligent equipment via the DC carrier cable. This invention reduces the number of cables, solving the problem of the difficulty of laying multiple cables on the external tubing string during construction, while also reducing tubing string costs and production costs.

An ultra-long-range phase change injection oil production device includes tubing that passes through a wellhead flange and is inserted into a casing. A crude oil outlet is located at the upper end of the tubing, and a lower check valve is located at the lower end, ensuring that water-bearing crude oil can only enter the tubing from the casing. A heating device is located inside the tubing, above the lower check valve, to heat the water-bearing crude oil entering the tubing and generate steam. A limiting sleeve is located at the lower part of the tubing, and a sliding lifter is supported on the limiting sleeve. The sliding lifter has a sliding clearance fit with the inner wall of the tubing and slides upward under the action of steam, thereby pushing the water-bearing crude oil upward. An upper check valve is located on the tubing, above the sliding lifter, ensuring that the water-bearing crude oil, after being pushed upward, can only enter the upper part of the tubing from bottom to top through the upper check valve. The advantages are: low mechanical wear throughout the operation, high reliability, long stroke of the sliding lifter, high working efficiency, and low operating noise; moreover, it eliminates the need for a wellhead heating device, resulting in low oil production costs.

The invention discloses a large-stroke adjusting device based on a screw pump and oil extraction equipment, and relates to the technical field of oil extraction equipment. The bottom end of the adjusting rod extends to the underground to be connected with a rotor of the screw pump, and transmission threads are arranged on the outer wall of the adjusting rod; the driving mechanism drives the adjusting rod to carry out oil extraction operation; the at least one adjusting block is sleeved outside the adjusting rod and is in threaded fit with the adjusting rod; the limiting assembly is used for limiting the axial movement of the adjusting block; and the locking mechanism comprises a movable locking piece. When height adjustment is carried out, the locking piece is in clamped butt joint with the adjusting block so as to limit circumferential rotation of the adjusting block, the driving mechanism drives the adjusting rod to rotate relative to the adjusting block, and therefore the adjusting rod generates axial lifting motion. According to the lifting mechanism, the adjusting rod is directly used as a thread feeding part, the physical height limitation of an existing lifting mechanism is broken through, and large-amplitude ultra-long stroke adjustment is achieved.

This invention discloses a method for adjusting reservoir development layers and well patterns, as well as a method for developing carbonate reservoirs. The method for adjusting reservoir development layers and well patterns includes: dividing the reservoir into Class I and Class II reservoirs according to a set classification standard, with Class I reservoirs exhibiting better permeability and homogeneity than Class II reservoirs; splitting the vertical well reverse nine-spot well pattern used for reservoir development into two sets of five-spot well patterns, and separately performing stratified water injection development on Class I and Class II reservoirs until the first predetermined stage; combining the two sets of five-spot well patterns into a new reverse nine-spot well pattern, and using the new reverse nine-spot well pattern for water injection development on Class I reservoirs. This method differentiates the well pattern configuration based on the different physical properties and reserve utilization difficulties of different types of reservoirs, achieving stratified water injection for oil production and solving problems such as single-layer breakthrough, large differences in vertical water drive effects, low reserve utilization, and severe ineffective water circulation. It maximizes the adjustment and rational utilization of old well patterns, reduces drilling and completion investment, and is highly operable.

The present application relates to a kind of oil production wellhead device, including connector, still including adjustment unit, conveying unit, pressure relief unit and pressure guide piece;The top of connector is fixedly installed with adjustment unit, one side of adjustment unit is fixedly installed with conveying unit, the other end of adjustment unit is fixedly installed with pressure relief unit, adjustment unit, including fixedly installed in the top of connector installation component, and adjustment component is slidably installed in the inside of installation component;Pressure relief unit, including fixedly installed in the one side of installation component guide component, and pressure relief component is slidably installed in the inside of guide component.This application improves the safety and reliability of oil and gas production.This application wellhead reduces production cost, and achieves the purpose of low-carbon environmental protection exploitation.

The embodiment of the present application provides a variable flow degree adjustment method and system based on seepage theory calculation, and belongs to the technical field of oil reservoir development. The method comprises the following steps: calculating the seepage velocity of each well based on water injection-oil production working condition information; identifying the well group to be adjusted in terms of variable flow degree based on the spatial and / or temporal difference characteristics of the seepage velocity of each well; calculating the front water saturation in each well group to be adjusted in terms of variable flow degree based on the water injection-oil production working condition information, and obtaining the water drive front position in each well group to be adjusted in terms of variable flow degree based on the front water saturation calculation; and determining and executing the adjustment scheme of each well group to be adjusted in terms of variable flow degree based on the water drive front position. The present application can effectively improve the water drive development effect, increase the water injection swept volume, overcome the low development efficiency problem caused by unreasonable well spacing or the formation of dominant channels in the prior art, and thus realize more efficient oil reservoir development and resource utilization.

The application discloses an oil well production fluctuation analysis method and system, and belongs to the technical field of pumping unit oil production. The method is used for analyzing various influence factors of production fluctuation under the state of oil well production fluctuation, and determining the influence amount of each influence factor. The analysis method of the influence factors is as follows: according to historical data under the state of stable oil well production, the yield A corresponding to the index value A1 of the influence factor is determined; according to the index value A1 of the influence factor and the corresponding yield A, and in combination with the index B1 of the current influence factor, the yield B corresponding to the index B1 of the influence factor is determined; and the influence amount of the influence factor is determined according to the yield A and the yield B. According to the influence amount, the main influence factor leading to production fluctuation is determined, the main influence factor leading to production fluctuation is rapidly identified according to the influence amount, and strong support is provided for formulating targeted production stabilization measures.

The present application relates to a kind of method, device, medium and equipment for predicting the reserves increment of oilfield adjustment well, comprising the following steps: determining target oilfield and the adjustment well to be studied;With oilfield production life as abscissa, with oil production as ordinate draw production decline curve;According to the decline curve, obtain the decline type;According to the decline type, calculate the real reserves increment of each adjustment well;Judge whether there is correlation between the real reserves increment of adjustment well and water cut or cumulative oil production, if there is, then two-dimensional data is fitted to establish the first mathematical model;If there is not, then the second mathematical model of real reserves increment and water cut and cumulative oil production is established.Cumulative oil production and oilfield water cut of the adjustment well to be predicted are substituted into the first mathematical model or the second mathematical model, and the real reserves increment is obtained.The method for predicting the reserves increment of oilfield adjustment well fully considers the influence of interwell interference on recoverable reserves of adjustment well, and improves the reliability of prediction.

This invention discloses an oil extraction device, including a packer. The packer includes a central cylinder with a first end and a second end. A first sleeve is fitted over the central cylinder. An annular piston is installed in the cavity formed between the first sleeve and the central cylinder, dividing the cavity into a first chamber and a second chamber. A second sleeve is installed in the second chamber. A rubber sleeve is fitted over the central cylinder. A water inlet hole communicating with the first chamber is provided on the side wall of the central cylinder. A third sleeve is installed outside the first sleeve. The third sleeve has a driving member that extends through the first sleeve into the first chamber. A third elastic member is installed between the driving member and the end of the first chamber facing the first end. The third elastic member pushes the third sleeve to move towards the second end. During depressurization, the third sleeve can move towards the rubber sleeve and squeeze the rubber sleeve, thereby increasing the pressure of the rubber sleeve on the first abutment member, accelerating the retraction of the second sleeve, thereby accelerating the discharge of water from the first chamber and accelerating the unsealing speed of the packer.

The present application relates to the field of oil exploitation, and provides an oil well dosing and gas collecting integrated skid-mounted device, a use method thereof and an oil extraction equipment. The integrated skid-mounted device comprises a skid-mounted base, a dosing part fixedly arranged on the skid-mounted base, a gas collecting part detachably arranged on the skid-mounted base and a moving device for carrying the skid-mounted base to drive the skid-mounted base to move; the dosing part comprises a box body for containing liquid and a dosing pipeline connected to the box body, and the dosing pipeline is used for outputting the liquid in the box body; the gas collecting part is used for collecting gas and performing pressure boosting treatment on the collected gas, and the gas collecting part comprises a gas inlet for allowing gas to enter and a gas outlet for outputting the gas. The oil well dosing and gas collecting are integrated in one skid-mounted device, and the skid-mounted device is movable, so that the skid-mounted device can be moved to a required position in a mobile manner in actual use, and convenience is improved.

The utility model relates to the field of lubricating oil reaction kettle discloses a kind of lubricating oil reaction kettle sealing device, including the kettle body of lubricating oil production use, the top of kettle body is fixedly connected with feed pipe, the outside of feed pipe is threadedly equipped with sealing cover, one side of kettle body is fixedly connected with gas outlet pipe, one end of gas outlet pipe is fixedly connected with left cylinder, one end of left cylinder is threadedly equipped with right cylinder, filtering and purifying mechanism is arranged between left cylinder and right cylinder, one-way flow mechanism is arranged on gas outlet pipe, sealing mechanism is arranged on right cylinder.The utility model has the following advantages and effects: by the setting of one-way flow mechanism and sealing mechanism, avoid outside air to enter reaction kettle and reduce lubricating oil production quality, and filtering and purifying mechanism is arranged, harmful gas can be filtered and purified, environment is not polluted, personnel health is guaranteed.

The application discloses a kind of carbonate reservoir classification method and device.The method comprises, for the production well with PLT data in carbonate reservoir, determining the oil production index and physical property index of oil production interval, the oil production index is the ratio of oil production and thickness of oil production interval, and the physical property index is the product of porosity and permeability logarithm of oil production interval;According to the oil production index and physical property index of oil production interval and the corresponding relationship between oil production index and reservoir category determined in advance, the corresponding relationship between the physical property index of oil production interval and reservoir category is determined;According to the porosity and permeability of target carbonate reservoir, the physical property index is determined, and according to the corresponding relationship between physical property index and reservoir category, the category of reservoir is determined.The method takes oil production index as an intermediary, realizes the classification of reservoir category by physical property index, comprehensively considers the reservoir property and percolation property of reservoir, is suitable for carbonate reservoir, especially suitable for the classification of bioclastic limestone reservoir with poor porosity-permeability correlation.

The utility model relates to the technical field of packer for petroleum, especially a packer for petroleum, including packer and screw thread, the outer wall front of packer is processed with screw thread, the outer wall of screw thread is connected with support structure, the left and right sides of packer are respectively fixed with straight board, the upper and lower sides back of packer are respectively processed with round mouth, the outer wall back of packer is inserted with straight cylinder, make sleeve in the outer wall of screw thread rotate back in support structure, the sleeve of rotation drives round bar to move back, thereby make the slanting pole rotate outward, the lateral support of rotating slanting pole makes the horizontal plate in the outer wall of straight board rotate outward, makes the lateral end of horizontal plate and well wall and tightly, completes the support to packer, can guarantee the stability of packer when oil production, eliminates the unstable factor in the use of packer for petroleum, ensures the normal use of packer for petroleum.

This utility model relates to the field of insulating oil production technology, specifically to a blending equipment for insulating oil production and processing. The equipment is rationally designed and mainly consists of a blending tank, a first feed pipe, a second feed pipe, a discharge pipe, a stirring motor, a stirring shaft, stirring blades, a side rolling assembly, a receiving tray, and a bottom rolling assembly. These components work in concert. The first feed pipe is used to feed the insulating oil raw materials, and the second feed pipe is used to feed the antioxidant additive particles. The stirring motor drives the stirring shaft to rotate. The stirring blades rotate with the stirring shaft to achieve the mixing function. The side rolling assembly rotates with the stirring shaft to crush and break down the antioxidant additive particles adhering to the inner wall of the blending tank. The bottom rolling assembly rotates with the stirring shaft to crush and break down the antioxidant additive particles deposited on the receiving tray. This method ensures that the antioxidant additive particles fully participate in the blending process.

The present application relates to a kind of shale oil dessert prediction method and system based on multi-attribute fusion, the present application establishes the three-dimensional distribution model of porosity, permeability, oil saturation, total organic carbon content and brittle index under lithofacies constraint, constructs the feature set including single attribute and attribute interaction term;Nonlinear mapping relationship between multiple attributes and oil production is established based on machine learning model, and the contribution value of each attribute and interaction term is calculated using SHAP method, and then the corresponding weight coefficient is determined;On this basis, the three-dimensional prediction model of dessert coefficient is constructed, and the horizontal well trajectory is dynamically optimized according to the distribution of dessert coefficient.Multiple attribute nonlinear modeling and weight objective determination improve the accuracy and reliability of shale oil dessert prediction, can effectively guide horizontal well deployment and trajectory adjustment, significantly improve sand body drilling rate and yield level.

A retrieveable and drillable tubing-type wellbore isolation device belongs to the field of oilfield downhole tool technology. This utility model includes, from top to bottom, a tubing assembly, an anchoring and sealing assembly, and a blowout preventer (BOP) bottom valve assembly connected sequentially. The tubing assembly includes a coupling, a protective cap, and a tubing; the outer side of the coupling is threaded to the protective cap, and the inner side is threaded to the upper end of the tubing. The anchoring and sealing assembly includes a central tube, and a setting mechanism, an anchoring mechanism, a sealing mechanism, and a releasing mechanism fitted around the central tube. The BOP bottom valve assembly includes a lower short connector, a BOP sleeve, and a sealing sleeve; the lower short connector is threaded to the sealing sleeve, and the sealing sleeve contains a sealing rubber sleeve. The tubing can be inserted into the anchoring and sealing assembly and the BOP bottom valve assembly, forming a sealing fit with the sealing rubber sleeve. This utility model enables stratified oil production with a single tubing string run, effectively isolates oil layers during pump inspection, and has both retrieveable and drillable retrieval methods, greatly improving operational efficiency and safety.

This invention relates to a waste heat recovery device, and more specifically, a waste heat recovery device for lubricating oil production. The device includes two horizontal pipes arranged vertically. Multiple vertical pipes (first type) are fixed to the upper horizontal pipe, and multiple vertical pipes (second type) are fixed to the lower horizontal pipe. The first vertical pipes are slidably connected to the second vertical pipes. A sealing ring (second type) is embedded in the inner upper part of each second vertical pipe, and the sealing ring is fitted over the outer side of the first vertical pipe. Flanges are fixed to both ends of the horizontal pipes, and sealing rings (first type) are adhered to the flanges. Rods (first type and second type) are fixed to the upper and lower horizontal pipes respectively. Each rod has multiple circular through holes. A threaded post passes through these circular through holes to secure the rods. Nuts are threaded to both ends of the threaded post. The heat exchange length and heat dissipation area can be adjusted by extension or retraction.

The application discloses a mechanical commutation tower type oil pumping machine with a tensioning device and relates to the technical field of oil production. The mechanical commutation tower type oil pumping machine comprises a driving device installed on a well platform below a tower and a power transmission device. The upper chain wheel tensioning device is installed on the inner side of the tower. The upper chain wheel is transversely installed on the cylinder cover on the top of the piston rod of the oil cylinder by the chain wheel shaft. The chain link clamping device pulls the roller set in the sliding groove on the one side of the bottom of the counterweight. While the chain link clamping device rotates one circle around the upper chain wheel and the lower chain wheel, the counterweight is driven to make up-down reciprocating movement in the tower for one time. The roller assembly on the chain link clamping device also reciprocates in the sliding groove for one time. The application can realize timely and moderate tensioning of the worn, loosened and lengthened chain, and ensures that the chain tension does not affect the long-period stable operation of the oil pumping machine.

This invention provides a multi-stage sealing mechanism for oil wellhead applications, addressing the problems encountered during actual operations where deposits accumulate on the sealing contact surface, narrowing or blocking the sealing gap and affecting the seal's fit; and where the accumulation of deposits causes wear on the sealing material, leading to leaks. Specifically, the device includes a multi-stage sealing mechanism: a primary and secondary sealing mechanism for sealing the tubing hanger and casing head; a tertiary sealing mechanism for sealing valves; and sealing components for sealing corresponding sealing parts. Each of the primary, secondary, and tertiary sealing mechanisms includes a sealing assembly for sealing the corresponding sealing area. The device also includes a mechanism for detecting impurities and deposits at the sealing areas, assessing the risk of leakage based on the monitoring results, and generating and implementing an optimized solution based on the leakage risk.

This invention relates to the technical field of oil production engineering, and more particularly to a control method for closed-loop pressure monitoring and adjustment of intelligent injection wells. The method includes: identifying a target intelligent well; obtaining and labeling the number of layers in the target intelligent well; detecting and recording the real-time single-layer water injection volume of each layer; dividing each layer into a target layer and multiple non-target layers based on the real-time single-layer water injection volume; obtaining the injection pressure of the target layer by monitoring and adjusting the target layer; obtaining the monitoring and adjustment pressure from the target layer injection pressure; inputting the monitoring and adjustment pressure into a constant pressure control valve; controlling the monitoring and adjustment pressure to stabilize the pressure through the constant pressure control valve; monitoring and adjusting the water injection volume of each non-target layer; detecting the water injection volume of the target intelligent well after monitoring and adjustment, until the single-layer water injection volume of each layer of the target intelligent well meets the injection requirements, thus completing the monitoring and adjustment. The method provided by this invention eliminates inter-layer interference during monitoring and adjustment, adjusts unqualified layers on a single layer, and realizes remote monitoring and adjustment of intelligent injection wells.

This application provides a co-well injection and production oil production device and method, belonging to the field of oil and gas field development technology. The co-well injection and production oil production device includes a fixedly connected water injection sub and an oil production sub. The water injection sub is used to inject water into a connected water injection fracture through a check valve located on it during the water injection cycle. The oil production sub is used to extract oil from a connected oil production fracture through a check valve located on it during the oil production cycle. In the process of oil production using the above device, oil production is stopped during water injection and water injection is stopped during oil production. This alternating operation of water injection and oil production cycles avoids pressure differentials within the device, thereby significantly reducing the requirements for tubing equipment and thus lowering equipment costs while ensuring smooth oil production operations.