159 results about "Well test" patented technology

The invention provides a shale oil well pressure recovery well test interpretation method and device and electronic equipment.The method comprises the steps that effective well shut-in pressure test data and well entering time of a pressure gauge are obtained, the effective well shut-in pressure test data are well bottom pressure data after well shut-in and after the pressure gauge is lowered to the target test depth away from a well opening, and the well entering time is obtained; the well entering time is the time required for lowering the pressure gauge to a target test depth from a well mouth after the well is closed; obtaining well shut-in starting time and a pressure gradient in a well entering process of the pressure gauge; according to the pressure gradient, fluid pressure data at the well shut-in starting time and the target test depth from the well mouth are calculated to serve as supplementary pressure data; according to the effective shut-in pressure test data, the well entering time and the supplementary pressure data, a complete pressure recovery well test curve is determined; and on the basis of the complete pressure recovery well test curve, pressure recovery well test interpretation is carried out. According to the method, the problem of data missing in the early stage of well shut-in testing can be solved, the integrity of a pressure recovery well testing curve is guaranteed, and the accuracy of pressure recovery well testing interpretation is improved.

The invention provides a shale gas well inter-well pressure channeling identification method, system, device and medium, the shale gas well inter-well pressure channeling identification method comprises the following steps: carrying out well test analysis in a pump stop pressure drop stage after fracturing, and collecting data; the bottom hole pressure is calculated, and pressure data oscillation caused by the water hammer effect is eliminated; drawing a pressure difference and pressure difference derivative double logarithmic curve based on the bottom hole pressure data; establishing a shale gas well non-uniform fracture multi-zone coupling well test seepage model; the model parameters are adjusted, a pressure difference and pressure difference derivative double logarithmic curve is fitted, and when the model result is close to the drawn pressure difference and pressure difference derivative double logarithmic curve, the crack parameters of the model parameters are obtained through inversion; judging whether the crack parameter is too high or not; and determining the relationship between the child well group and the mother well group, analyzing the pressure difference and pressure difference derivative curve morphological characteristics of the fracture parameter high section, and judging whether pressure channeling occurs or not. The system can realize the method. According to the method, the inter-well pressure channeling identification efficiency in the well group synchronous fracturing period can be improved.

The invention discloses a deep and shallow well dewatering construction method for a multi-aquifer communicated stratum foundation pit. In order to solve the problems of sedimentation outside a pit and wall deformation caused by one-time pumping and descending of a traditional mixed well, a shallow well with a filter screen located in a phreatic layer and a deep well extending to a confined aquifer are arranged in a foundation pit in the construction method; measuring and setting out, exploring and digging, hole forming, hole cleaning and slurry changing, well pipe descending, filling, water stopping and well washing are sequentially completed, and then an independent pumping and descending system is formed; water level, water quantity and peripheral deformation data are obtained through a single well-group well test, and a deep well starting threshold value is determined; before the foundation pit is excavated, only a shallow well is started to drain a phreatic bed, deep well pressure reduction is started in an echelon mode after the foundation pit is excavated to the preset depth and a support is erected, and on-demand dewatering is achieved; the bottom plate construction stage is divided into three stages for well shut-in. The construction method can obviously reduce the drop amplitude of the water level outside the pit, the lateral displacement of the wall body and the ground surface settlement, has the advantages of safety, economy and environmental protection, and is suitable for coastal complex geology deep foundation pit engineering.

A method includes: accessing a full-field model for a reservoir containing wells without well-test events and wells with well-test events; importing records from all wells and well-test results from the test-available wells; creating a local grid refinement in a vicinity of each test-available well; launching a first iteration of simulation; using artificial intelligence to determine, for each test-available well, a first ratio of a simulated pressure derivative from results of the first iteration of simulation and an observed pressure derivative from the well-test results; launching a second iteration of full-field simulation using the model where the first ratio is used as a permeability multiplier in the vicinity of each test-available well; and responsive to meeting an objective of the simulation, generating a report delineating re-distributed permeability in the reservoir based on combining the records from all wells and the well-test results from the test-available wells corrected by respective permeability multipliers.

A stress sensitivity analysis method for a fractured gas reservoir includes: S1, calculating a material balance quasi-time; S2, calculating a normalized production; S3, calculating a single well controlled reserve; S4, analyzing and judging a stress sensitivity. Based on the normalized quasi-pressure and quasi-time, the gas well test analysis is carried out, and the stress sensitivity of the actual reservoir is determined by taking the original bottom hole flowing pressure of the actual reservoir as the starting point, the obtained reservoir stress sensitivity is more in line with the actual situation of the reservoir, and the obtained reservoir stress sensitivity is more accurate, which provides more valuable values for reservoir protection, oilfield development, and development planning.

The invention relates to a ground simulation device for testing an underground logging pup joint, which comprises a logging pup joint and a leak-off ring which are arranged in a kettle body, the logging pup joint is positioned in the leak-off ring, the kettle body is connected with a slurry injection unit, and the slurry injection unit is used for injecting slurry into a space in the leak-off ring and a space outside the leak-off ring. The slurry injection unit is also used for injecting pressure into the leak-off ring, so that the slurry in the leak-off ring is filtered into a mud cake; electromagnets and force measuring sensors are arranged on the left side and the right side of the kettle body, the electromagnets are used for providing suction force for the well logging short section, and the force measuring sensors are used for measuring the suction force of the corresponding electromagnets; the lower end of the kettle body is connected with a vertical force applying unit, and the vertical force applying unit is used for injecting a jam releasing force in the vertical direction to the lower end of the kettle body so as to research the relationship between the jam releasing force and the suction force. Potential hazards possibly caused by testing of the well logging short section in an actual well are greatly avoided, and manpower, material resources and time cost are saved to a great extent.

The invention relates to a fractured water sandstone gas reservoir development production allocation method and system, and belongs to the field of oil and gas field dynamic analysis and research. The method comprises the steps that an optimized production allocation well is determined based on the production well testing comprehensive permeability, the storage capacity ratio and the breaking joint directional strength coefficient; establishing a matrix-fracture gas supply coupling chart for the determined optimized production allocation well; on the basis of the matrix-fracture gas supply coupling chart and the critical water invasion pressure difference, energy loss constraints are reduced, and the production allocation area with the optimized production allocation ratio of the production allocation well is obtained through diagrams. The water breakthrough gas well production allocation method is achieved through a critical water invasion pressure difference, gas well pressure drop rate and gas production index linkage dynamic constraint diagram method, the problems that reasonable productivity calibration and scientific and reasonable production allocation are difficult after gas well water breakthrough in a gas field are solved, the scientific production system of the water breakthrough gas well is effectively formulated, and the production efficiency of the gas well is improved. And a foundation is laid for reasonable and efficient development of gas wells and gas fields.

The invention relates to a reservoir fracture permeability prediction method based on seismic wave attenuation attributes, and aims to predict fracture permeability in a fractured reservoir. The method comprises the steps of determining the lowest effective frequency and the dominant frequency through statistical calculation of a three-dimensional seismic data frequency spectrum, calculating fracture strength distribution through seismic wave attenuation attributes, interpreting permeability data through production well testing, fitting the permeability data with the fracture strength, and establishing a conversion relation between the fracture strength and the permeability. And finally, establishing fracture permeability spatial distribution through the conversion relation. According to the method, the defects that in the prior art, fracture fragments are determined through variance and an ant tracking method, then a discrete fracture network model is constructed through a simulation means, and the fracture permeability is indirectly calculated are overcome, the calculation uncertainty is greatly reduced without using a simulation method, the fracture prediction precision is remarkably improved, and the method is suitable for large-scale popularization and application. And a new technical means is provided for exploration and development of fractured permeable reservoirs.

The present invention relates to a wellbore string and reservoir integrated well test interpretation and analysis method, device, medium, and equipment. The method comprises: establishing a vertical wellbore string model that takes gravity into account based on the law of conservation of momentum, integrating the control equation of the vertical wellbore string to obtain the coupling equation of the vertical wellbore string and the reservoir; establishing a reservoir model that takes gravity into account based on the principles of seepage mechanics, and using the Laplace integral transformation method to obtain a pressure distribution solution for the reservoir model; substituting the pressure distribution solution of the reservoir model into the coupling equation of the vertical wellbore string and the reservoir and discretizing it, solving the discretized coupling equation to obtain the flow rate at discrete units in the vertical wellbore string and the pressure solution deep below the pressure gauge. The method can realize real-time interpretation and analysis of oilfields based on continuously monitored pressure and flow data from the wellbore, and realize dynamic simulation analysis and predictive analysis of oilfield production.

The invention provides a transient productivity prediction method based on a fracture-vug reservoir pressure recovery well test model, and relates to the technical field of oil and gas reservoir development. The prediction method comprises the following steps: S1, through fracture-vuggy reservoir pressure recovery well test interpretation, establishing a fracture-vuggy reservoir well test geologic model, and obtaining reservoir parameters; s2, establishing a bottom hole pressure calculation equation under a constant flow condition, and calculating bottom hole pressure by adopting a multi-stage flow superposition principle; s3, establishing a yield calculation equation under the condition of the fixed bottom hole pressure to obtain data of flow changing along with time under the fixed bottom hole flow pressure; s4, forming a productivity prediction method that both the yield and the bottom hole pressure change along with well testing, and establishing a productivity calculation equation of the yield and the pressure when both the pressure and the flow change based on a Duhanm principle to realize transient productivity calculation prediction; therefore, a new productivity prediction method suitable for the fracture-cavity type oil reservoir is formed. The long-term production pressure and yield change of the oil well can be predicted more accurately, and development and production allocation are guided.

The present application relates to the technical field of well testing analysis, and is a high-temperature and high-pressure deep well perforation early formation fluid property prediction method. The method is performed according to the following steps: establishing a fitting equation of the maximum value of the average density of the downhole mixture of the early production test of the high-temperature and high-pressure deep well of the tested oil in the research area and the static pressure gradient at the perforation section after the normal production test of the high-temperature and high-pressure deep well of the tested oil; establishing a corresponding relationship table of the static pressure gradient T at the perforation section of the high-temperature and high-pressure deep well and the formation fluid property; and obtaining the predicted formation fluid property of the to-be-evaluated oil well from the maximum value of the average density of the downhole mixture of the early production test of the to-be-evaluated oil well. The present application provides a high-temperature and high-pressure deep well perforation early formation fluid property prediction method, fills the blank of the high-temperature and high-pressure deep well perforation early fluid property prediction technology, and has the characteristics of simplicity, high efficiency, low cost, and high accuracy.

The present disclosure provides a method, device, electronic device and storage medium for determining well test information, and relates to the field of well test technology. The method includes: determining at least one group of test well groups for testing the reservoir based on the acquired planar heterogeneity parameters of the reservoir to be tested; for each test well in the test well group, acquiring well logging data of the area where the test well is located, and determining the longitudinal heterogeneity parameters of the test well based on the well logging data; determining the test method of the test well based on the longitudinal heterogeneity parameters of the test well; and determining the position of at least one group of test well groups and the test method of each test well as the well test information of the reservoir. Through the above scheme, the efficiency of oil and water well testing can be improved without affecting production as much as possible, and the deployment of planar and longitudinal logging methods and schemes for heterogeneous reservoirs can be realized, providing effective test data for reservoir parameter inversion, obtaining good pressure recovery well test data, and reducing the impact on oil field production.

The application discloses a well testing pretreatment method and device, and belongs to the field of oilfield development. The method is applied to a computer device and comprises the following steps: controlling a liquid injection device to inject liquid into a first well, so that the liquid injected into the first well penetrates into a target reservoir through a well wall of the first well; monitoring the pressure at the well mouth of the first well during the injection of the liquid into the first well; when the pressure at the well mouth of the first well reaches a pressure threshold, controlling the liquid injection device to stop injecting liquid into the first well and monitoring the change rate of the pressure at the well mouth of the first well; when the change rate of the pressure at the well mouth of the first well is stable, controlling a liquid return channel and a first packer to be opened, so that the liquid penetrating into the target reservoir returns to the well mouth of the first well through the liquid return channel; and monitoring the pressure difference on both sides of the first packer during the liquid return, and when the pressure difference on both sides of the first packer reaches a pressure difference threshold, controlling the liquid return channel to be closed. The application can improve the well testing effect.

The invention provides a well spacing method for a multi-thin-layer tight sandstone gas reservoir under complex landform conditions. The well spacing method comprises the following steps: finely describing a sand body structure, determining the development scale and characteristics of a single sand body, and constructing a width-to-thickness ratio empirical formula of the single sand body; according to a sedimentary microfacies research result of a to-be-distributed well area and a single sand body width-to-thickness ratio empirical formula, drawing a plane distribution diagram of each layer of sand body, according to a reservoir parameter standard of the to-be-distributed well area, compiling and developing a favorable area in a layered manner, and overlapping to form a construction and production favorable area plane graph; collecting interference well testing data of a to-be-distributed well area or an adjacent area, counting well row spacing when interference is seen so as to determine reasonable well spacing of the to-be-distributed well, and carrying out numerical simulation to optimize the well pattern model; according to the method, topographic and geomorphic characteristics are considered as a whole, and in a construction and production superposition favorable area, a regular hexagon seven-point well pattern is adopted for well spacing, so that the well pattern is matched with a topographic and geomorphic target body. The problem that in the prior art, a multi-thin-layer sandstone gas reservoir is not prone to forming a well site under the complex landform condition is solved.

This invention discloses a method, apparatus, equipment, and storage medium for determining the reservoir control limit of strike-slip faults. The method includes: determining oil and gas reservoir evaluation indicators for each well within a target area based on single-well test data; determining matching oil and gas reservoir evaluation indicators for each depth interval based on the oil and gas reservoir evaluation indicators for each well within the target area; wherein the depth intervals are determined based on statistical results of the drilling depths of each well within the target area; determining the correlation between the matching oil and gas reservoir evaluation indicators for each depth interval and the pre-obtained oil and gas supply depths of each well; and determining the reservoir control limit of strike-slip faults within the target area based on the correlation. This technical solution solves the problem of low reliability in determining the reservoir control limit of strike-slip faults, and can improve the accuracy of predicting the reservoir control limit of strike-slip faults while providing corresponding technical support for the selection of potential zones.

The invention discloses a productivity prediction method and device based on multi-layer commingling exploitation development, equipment and a medium. The method comprises the following steps: performing well test interpretation on a multi-layer oil reservoir corresponding to a reference oil well based on test data of a short-time pressure drop test to obtain an inversion parameter corresponding to each layer section; determining an initial injection index of each layer section according to the test data of each layer section; correcting the initial injection index based on the test data and the inversion parameter of each layer section to obtain a target injection index of each layer section; and determining a productivity prediction model according to the target injection index of each layer section and the multi-layer commingling production oil production index of the reference oil well, and performing productivity prediction on the target oil well based on the productivity prediction model. According to the technical scheme, external interference caused by a short-time pressure drop test can be effectively eliminated by correcting the injection index, the accuracy of the injection index is improved, the fitting effect of the injection index and the oil production index is enhanced, and the accuracy of multi-layer commingling production capacity prediction is improved.

The application discloses a kind of faulted dissolution body reservoir oil well producing depth acquisition method, device, equipment and medium.Faulted dissolution body reservoir oil well producing depth acquisition method includes: obtaining the temperature well testing monitoring data of target faulted dissolution body reservoir oil well;Temperature well testing monitoring data is handled, and actual temperature well testing interpretation curve is obtained;Temperature well testing model of target faulted dissolution body reservoir oil well is constructed, and the theoretical temperature well testing interpretation curve corresponding to multiple heat transfer distances is obtained based on temperature well testing model;Comparative analysis actual temperature well testing interpretation curve and theoretical temperature well testing interpretation curve, the heat transfer distance corresponding to the theoretical temperature well testing interpretation curve most matched with actual temperature well testing interpretation curve is determined as the producing depth of target faulted dissolution body reservoir oil well.Using the present application can reduce the uncertainty of faulted dissolution body reservoir producing depth calculation, improve the accuracy of producing depth calculation.

The invention discloses a water invasion oil and gas well productivity prediction method and system based on well test interpretation and seepage theoretical calculation, and relates to the technical field of oil and gas reservoir development. The method comprises the following steps: establishing a gas well test interpretation model based on well test data; performing historical data fitting on the gas well test interpretation model to obtain a productivity well test indication curve; analyzing the characteristics of a productivity well testing indication curve, and introducing additional pressure loss coefficient and laminar flow item coefficient correction based on a seepage mechanics theory to obtain a plane radial non-Darcy seepage productivity evaluation model of the water-invaded gas well; and building a block well type and stratified system correlation coefficient correction chart based on a non-Darcy seepage productivity evaluation model, and guiding reasonable production allocation and injection allocation of the oil and gas field / gas storage well. Rapid and reasonable production allocation and injection allocation of the water-invaded gas well can be achieved, the cost is reduced, the efficiency is improved, the number of well testing times is greatly reduced, and reasonable and efficient operation of oil-gas field development / gas storage injection and production is guaranteed.

The invention discloses offshore exploratory well testing and draining equipment and a metering method, and the offshore exploratory well testing and draining equipment comprises a liquid supply device, an underground device and a separation metering device, and further comprises a temperature difference energy thermal circulation device. The temperature difference energy heat cycle device comprises a steam generation assembly, a power generation assembly and a heating assembly; the steam generation assembly is used for generating steam by utilizing temperature difference energy of surface seawater and deep seawater; the power generation assembly is used for generating power through steam and supplying power to the heating assembly. The heating assembly is used for heating working fluid supplied into the downhole device. The working liquid heated to the preset temperature is supplied into the underground device and mixed with the produced liquid, the temperature of the mixed liquid of the produced liquid and the working liquid is increased, the viscosity of the mixed liquid is reduced, the mixed liquid is smoothly discharged to the separation metering device through the liquid outlet, and the problems that the temperature difference of an offshore exploratory well is large, the produced liquid is attached to the inner wall of a shaft due to low temperature, and productivity evaluation is affected are solved.

This invention relates to the field of well test interpretation technology, and discloses a method and related equipment for calculating the length of large-scale natural fractures. By establishing a mathematical model of well test in a naturally fractured reservoir, calculating the real-time bottom hole pressure, and plotting the interpretation curve of the well test in the naturally fractured reservoir, the theoretical bottom hole pressure is obtained by combining the real-time bottom hole pressure and the interpretation curve, and the theoretical well test curve is plotted. Finally, the natural fracture length is obtained by fitting the theoretical and measured curves. This method overcomes the limitation of uniform fracture distribution in conventional models, is suitable for deep gas reservoirs with poor matrix properties and strong fracture heterogeneity, and avoids the problem of only being able to obtain equivalent parameters and interpreting parameters that do not reflect reality. It accurately characterizes the fracture development state and improves the accuracy of well test interpretation.

The invention provides a method for determining the permeability and porosity of a karst cave main body in an interlayer karst area, and the method comprises the steps: collecting the data of a research area, and determining a single well belonging to a single fracture-cave body; single-well test interpretation is conducted, and the inner area permeability and the outer area permeability of single-well test interpretation are determined; establishing a first relation model by utilizing the inner area permeability and the outer area permeability, establishing a fracture zone well logging interpretation model by utilizing the research area data, and performing fracture zone permeability well logging interpretation; and obtaining the cave main body permeability through the first relation model and the fracture zone permeability. The porosity determination method comprises the following steps: determining the permeability of the karst cave main body by adopting the permeability determination method; and establishing a second relation model by utilizing the research area data, and obtaining the porosity of the karst cave main body through the second relation model and the permeability of the karst cave main body. According to the method, values are accurately assigned to the porosity and permeability of the interlayer karst fracture-cavity body, and important reservoir physical property parameters are provided for efficient development of the fracture-cavity type carbonate reservoir.

An embodiment of the present application discloses a well testing device, method, and computer storage medium, belonging to the technical field of shale oil exploration and development. The device includes: a front baffle, a main body, and a back plate. One end of the main body is connected to the front baffle, and the other end of the main body is connected to the back plate. An open cavity is formed between the front baffle, the main body, and the back plate for placing a pressure gauge. There are gaps arranged on the front baffle, and there are telescopic support arms on the back plate for fixing the back plate inside the pipe wall of the Christmas tree, and the Christmas tree is the Christmas tree arranged on the well to be tested. The well testing device provided by the embodiment of the present application can perform well testing on an oil well without being placed in the oil well, and thus can obtain well testing data of the oil well, providing well testing data information for subsequent oil well construction.

The application discloses a method and device for determining percolation characteristics of a reservoir, and belongs to the technical field of oil and gas reservoir exploration and development. The application divides different reservoir space matching types by the structural characteristics and distribution characteristics of the reservoir space in a core, constructs a corresponding reservoir conceptual model for each reservoir space matching type, establishes a corresponding percolation model for different types of reservoir spaces in the reservoir conceptual model, and obtains the pressure response of the outlet end of different reservoir conceptual models in the process of solving the percolation model, so as to draw a well test characteristic curve, and determine the corresponding relationship between different reservoir space matching types and percolation characteristics according to the well test characteristic curves of different reservoir conceptual models, thereby providing support for the identification and evaluation of multiple medium reservoirs.

The application belongs to the technical field of oil and gas field development, and particularly relates to a porosity determination method, device, electronic equipment and storage medium. The porosity determination method comprises the following steps: obtaining seismic data and measured well data of a target area; establishing a geometric structure model of a fracture-vug type reservoir according to the seismic data; establishing a three-dimensional numerical well test model according to the geometric structure model and a corresponding fluid model; obtaining bottom hole pressure simulation data in the three-dimensional numerical well test model; and determining target porosity of the target area according to the bottom hole pressure simulation data and the measured well data. The application establishes a geometric structure model of a fracture-vug type reservoir through seismic data of a target area, then establishes a three-dimensional numerical well test model according to the geometric structure model, and finally determines target porosity of the target area by comparing bottom hole pressure simulation data of the three-dimensional numerical well test model with measured well data, thereby solving the problem of porosity assignment of a fracture-vug type reservoir.

The utility model relates to the technical field of oil and gas field well testing operation, in particular to an electronic well testing tool for dropping and fishing, which comprises a pressure gauge, a hanger, a releaser and an electronic unblocking instrument. The hanger is reasonable and compact in structure, the upper suspension arm and the lower suspension arm are arranged in the hanger, and after a tool is lowered into a target position in a well and the releaser and the hanger are separated from each other, the lower end of the upper suspension arm and the upper end of the lower suspension arm in the hanger can quickly stretch out to abut against the inner wall of a casing pipe. Therefore, the pressure gauge and the hanger can be firmly fixed at a target position in a well, the upper hanging arm can prevent the pressure probe from moving upwards when an upper impulsive force exists, the lower hanging arm can prevent the pressure probe from sliding downwards when a lower impulsive force exists, and the upper hanging arm and the lower hanging arm interact with each other. The phenomenon that the pressure gauge moves up and down in a well due to the fact that a single suspension arm is prone to being retracted when impulsive force is exerted on the suspension arm can be avoided, the upper suspension arm and the lower suspension arm interact, and accurate positioning of the suspension cylinder and the pressure gauge in the well can be achieved.

The invention discloses a deepwater high-pressure well test system, and the system comprises an acquisition module which comprises a plurality of pressure sensors and is used for acquiring the pressure of different positions in a deepwater high-pressure well; the input end of the optimization module is electrically connected with the output end of the acquisition module, and the optimization module is used for optimizing the acquired data; the input end of the processing module is electrically connected with the output end of the optimizing module, and the processing module is used for judging the high-voltage leakage condition; the input end of the output module is electrically connected with the input end of the processing module; the invention further discloses a deepwater high-pressure well testing method, the underground high-pressure leakage condition can be judged, and the phenomenon of overpressure damage or explosion to downstream equipment due to the fact that high pressure is kept in the low-pressure process is prevented.

This invention provides a construction method for deep exploration well testing, relating to the field of deep exploration well testing technology, including: Step 1, installing and pressurizing a test blowout preventer (BOP) assembly, and performing well cleaning operations after the pressure test is passed; Step 2, performing perforation operations using a tubing-transfer perforation method; Step 3, removing the perforation tubing; Step 4, running in a combined stimulation-testing process tubing; Step 5, disassembling the test BOP assembly and installing a gas production wellhead; Step 6, performing test extrusion and acidizing operations; Step 7, performing fluid drainage, sampling, and production assessment; This method solves the problems of low success rate, long construction period, and high construction cost in existing deep exploration well testing construction techniques.

The invention provides a method and equipment for calculating a productivity curve of a fractured-vuggy gas reservoir and a storable medium, and belongs to the technical field of gas reservoir development. The method comprises the steps that a well testing model of a well to be analyzed is established, Laplace transformation solving is conducted, and a Laplace space bottom hole pressure solution function is obtained; on the basis of the Laplacian space bottom hole pressure solution function, a numerical inversion technology is used for solving a real space bottom hole pressure solution; substituting the real space bottom hole pressure solution into a bottom hole pressure calculation formula under the four-stage pressure to obtain a fracture-vuggy gas reservoir productivity calculation result, and fitting to obtain a fracture-vuggy gas reservoir productivity curve; the invention further provides corresponding equipment and a storable medium. Compared with the prior art, the method for calculating the productivity curve of the fractured-vuggy gas reservoir provided by the invention is suitable for production analysis, prediction and dynamic data inversion in the actual production process of the fractured-vuggy gas reservoir; practice can be effectively guided, and economic benefits are improved.

Disclosed are methods, systems, and computer programs for generating petrophysical analysis data. The methods include: accessing first porosity data and first well log data associated with an NMR well; randomly selecting data elements comprised in the first porosity data and the first well log data; developing, based on the randomly selected first porosity data and first well log data, a learning data structure; generating, based on the learning data structure, a machine learning model; receiving second well log data using sensor(s) deployed about a non-NMR well; adapting, based on the second well log data, variable input parameters of the machine learning model to generate second porosity data; and formatting the second porosity data to generate petrophysical analysis data. The petrophysical analysis data indicates one or more of: a petrophysical characterization of a rock type; flow dynamic data of a carbonate reservoir; well test or perforation zone data; and pore data.

The present application relates to oil and gas well testing technology field, is a packer card seal production profile testing string and method, the former includes from top to bottom in turn connected together first coiled tubing, production profile logging instrument, second coiled tubing and packer, the first coiled tubing upper end is equipped with depth counter.The present application is reasonable and compact, through setting depth counter, can accurately position production profile logging instrument, second cooled tubing and packer, improve the testing efficiency of perforation cluster, through setting production profile logging instrument and packer, can test each perforation cluster, solve the problem of inaccuracy of testing, such as turbine revolution abnormality caused by uneven speed of coiled tubing dragging, large deviation of test result caused by coiled tubing dragging breaking casing inner oil and gas water distribution state, inaccuracy of tubing outside channeling test, can accurately test the contribution rate of each perforation cluster production, provide basis for reservoir understanding and fracturing scheme optimization.