53 results about "Reservoir modelling" patented technology

A method of optimizing a set of oil producing wells to be drilled in a reservoir includes receiving a base reservoir simulation representative of a geological oil reservoir, clustering the reservoir, and generating, in a first process, a possible pool of well positions in the reservoir, where each well position satisfies plausibility and respects operational constraints. The method further includes, in a second process, optimizing the pool of well positions, the second process maximizing a dynamic variable of the reservoir, and outputting the optimized pool of wells to a user. In embodiments, the second process further includes training a DNN surrogate model to forecast the production of the reservoir; and using the trained DNN surrogate model, optimizing the pool of wells.

The invention relates to the technical field of hydrofracture simulation experiments, in particular to a true triaxial hydrofracture fault slippage casing deformation monitoring method and system, and the method comprises the steps: preparing a target reservoir simulation sample; arranging and installing a shaft and a sensor; carrying out a water pressure physical model experiment and recording experiment data; and analyzing and processing the experimental data, and performing quantitative evaluation by combining the final state of the target reservoir simulation sample. According to the method, the shear deformation influence of fault slippage on the shaft casing under the true triaxial hydraulic fracturing condition can be quantitatively evaluated; scientific basis is provided for optimization of fracturing optimization design parameters, and engineering practical significance is achieved for optimization of the horizontal well casing damage prevention and control theory and on-site construction design.

The invention provides a tight gas and deep coal bed gas collaborative exploitation simulation experiment device. The tight gas and deep coal bed gas collaborative exploitation simulation experiment device is composed of a shaft simulation device, a reservoir simulation device, a gas-liquid two-phase flow supply device and a control system. The casing pipe is provided with a plurality of transparent converging sections, and the oil pipe can be downwards inserted to different layers. And the gas-liquid two-phase flow supply device is provided with a plurality of groups of independent gas-liquid conveying manifolds which are respectively connected with each convergence section of the sleeve through the reservoir simulation device, so that the independent regulation and control of seepage parameters and production pressure difference of each layer are realized. The control system integrates pressure and flow acquisition and image recording functions, monitors and analyzes data in real time, is used for simulating an interlayer coupling relationship, a mutual interference mechanism and dynamic productivity response during multi-layer commingling production, and provides an experimental basis for collaborative production layer strategy optimization.

The invention belongs to the technical field of sand control well completion in the natural gas hydrate development industry, and particularly relates to a natural gas hydrate reservoir gravel packing sand control long-period simulation experiment device and a sand control chart construction method. The simulation experiment device comprises a sand production and prevention and control integrated simulation system, a fluid injection system, a confining pressure pump, a liquid recovery tank and a data acquisition system, wherein the sand production and prevention and control integrated simulation system comprises a reservoir simulation module, a shaft annulus gravel layer simulation module and a screen pipe pre-filling layer simulation module; the fluid injection system and the confining pressure pump are connected with the reservoir simulation module, the liquid recovery tank is connected with the screen pipe pre-filling layer simulation module, and the data acquisition system is in signal connection with the sand production and prevention and control integrated simulation system. The simulation experiment device designed by the invention can truly simulate different production working conditions of the hydrate well, can accurately simulate the structure of the hydrate well bottom gravel packing sand control system, and can truly reduce the flow process of the hydrate well bottom fluid, so that the obtained experiment result is more authentic.

Method and systems for generating a reservoir simulation grid for a subterranean reservoir are disclosed. The method may include, using a reservoir simulation system, to obtain a reservoir model, where the reservoir model comprises a plurality of wellbore trajectories, define a coarse simulation grid pertaining to, at least a portion, of the reservoir model, and determine a grid refinement field based, at least in part, on the reservoir model. The method may further include, using a reservoir simulation system, to form a tree based on the coarse simulation grid, refine the tree at least in part, on an intersection of the grid refinement field and the coarse simulation grid, and define the reservoir simulation grid based, at least in part, on the refined tree and the coarse simulation grid.

Techniques for modeling a reservoir include identifying or inputting well and reservoir model parameters into a control system; calculating, with the control system, one or more hydraulic fracture limits of one or more hydraulic fractures in the reservoir model; determining, with the control system, one or more fracture segments; performing, with the control system, connection calculations based on the one or more hydraulic fracture limits and one or more fracture segments; setting up, with the control system, connections between the one or more hydraulic fractures and a matrix grid of the reservoir model; performing, with the control system, a reservoir simulation; and outputting, with the control system, reservoir simulation data from the reservoir simulation.

The present disclosure relates to computer-implemented methods, software, and systems for automatically assessing simulation results obtained from simulation to predict production of a reservoir. Simulation results and observed field data can be obtained based on executing a simulation model for predicting production of a reservoir in a field for a period of time. The observed field data is obtained from the field and for the reservoir in production during the period of time. A type of misfit of the simulation model can be determined when predicting the production. The one or more trained classifiers are trained to classify the type of misfit is based on an image processing of the observed field data and the simulation results. A modification is determined for the simulation model to adjust future simulation results to reduce the misfit of the simulation model. The simulation model is adjusted based on the determined modification.

The invention discloses a mine water recharge multi-field coupling effect simulation experiment system and method, and relates to the technical field of mine water utilization. The experimental system comprises a reservoir simulation box, a mine water supply system, a produced water collection and detection system and a microorganism culture and injection system, the reservoir simulation box is provided with a reservoir medium filling area and is matched with the pressure pump and the temperature control jacket to simulate the pressure and temperature of a deep stratum, the mine water supply system provides controllable mine water, the microorganism culture and injection system injects specific microorganisms, and the produced water collection and detection system detects the water quality and microorganism characteristics. The experimental method comprises the following steps: simulating reservoir conditions, injecting mine water and microorganisms, monitoring multi-parameter changes, and establishing a composite blockage mathematical model and a multi-field coupling partial differential equation. According to the invention, five-field coupling simulation of a stress field, a hydrodynamic field and the like can be realized, and a technical means is provided for underground water environment evolution and permeability mechanism research.

The invention belongs to the field of shale oil reservoir development in the oil and gas reservoir development technology, and discloses a pressure-braising-seepage-drainage integrated experimental device and method for shale reservoir actual temperature and pressure conditions, and the device comprises a power system, a fluid supply system, a reservoir simulation system, a temperature control system and an electronic metering system; the power system is used for providing pressure for the fluid supply system; the fluid supply system is used for supplying fluid to the reservoir simulation system, and the fluid is oil in the oil saturation process or fracturing fluid in the displacement process; the reservoir simulation system is used for simulating the fracturing-soaking-imbibition-flowback integrated process of the target shale oil reservoir under the actual temperature and pressure conditions; the temperature control system is used for simulating the actual temperature of the shale reservoir; and the electronic metering system is used for measuring the oil saturation in the produced liquid. The device is resistant to high temperature and high pressure, can simulate the ultrahigh-temperature and high-pressure actual oil reservoir environment of a shale reservoir, and can realize the fracturing-soaking-imbibition-flowback integrated process considering the actual formation pressure of shale.

The invention relates to the technical field of carbon sequestration and geological sequestration, and particularly discloses a slice CO2 water-rock reaction corrosion identification and pore evaluation method based on machine learning, and the method comprises the steps: firstly collecting multi-focal-plane images of the same view field of a slice before and after a reaction on a scanning electron microscope platform, and carrying out the registration; utilizing the trained U-Net instance segmentation model to automatically identify a corrosion area and extract a contour; generating a relative height map through a depth-of-field reconstruction and calibration technology in combination with a multi-focal-plane sequence, and obtaining the effective corrosion depth of each corrosion area; and carrying out volume normalization calculation based on area-depth information, and directly outputting porosity increment and spatial distribution thereof. According to the method, destructive detection is not needed, quantitative volume characterization of corrosion characteristics is achieved, the analysis efficiency and accuracy are remarkably improved, batch processing and mineral phase layering statistics are supported, and reliable data support is provided for CO2 geological storage reaction mechanism research and reservoir simulation.

The invention discloses a tight oil reservoir depletion type development wave and region evaluation device and method. The device comprises a tight oil reservoir simulation system, a horizontal well system, a pressure monitoring system and a production system, the tight oil reservoir simulation system comprises a reservoir simulation device and a fluid injection device which are connected. The reservoir simulation device can be filled with sand grains in a layered manner so as to simulate a target tight oil reservoir; the fluid injection device is used for injecting simulated formation water and simulated formation oil; the horizontal well system comprises a plurality of horizontal wells; each liquid production pipe is connected with a corresponding horizontal well outlet and is connected with a produced liquid metering device; the pressure monitoring system comprises a signal processor, a pressure sensor and a plurality of pressure probes; and the plurality of pressure probes are arranged in the reservoir simulation device. According to the device, the distribution rule of the sweep area can be identified according to the pressure change, the recovery ratio corresponding to the sweep area can be obtained, and therefore sweep area evaluation is achieved through physical simulation, and production guidance is provided for depletion type development of tight oil reservoirs.

Systems and methods include a computer-implemented method for performing well placement and configuration. Two-dimensional (2D) target entry (TE) points are generated in an area of interest (AOI) for wells to be drilled in an oil reservoir, where the 2D TE points are positioned according to a defined well length resolution. A single lateral is designed for each well using the 2D TE points, where each single lateral is designed with a different length, completion zone, azimuth, and orientation. Using the single laterals, a dynamic reservoir simulation is executed for the wells to be drilled in the oil reservoir, including rotating between different three-dimensional (3D) configurations for each 2D TE. A 3D configuration for each 2D TE is selected for each lateral and based on executing the dynamic reservoir simulation.

The invention belongs to the technical field of oil and gas development and exploitation engineering, and particularly relates to an experimental device for heterogeneous reservoir sand water production profile testing and separated bin filling water control effect evaluation and application of the experimental device. The experimental device comprises a gas supply system, a constant-flow liquid supply system, a data measurement and acquisition system, a reservoir simulation unit device, a shaft simulation unit device and a shaft sand water production profile quantitative monitoring device. Wherein the shaft simulation unit device is embedded into the reservoir simulation unit device; the shaft sand water production profile quantitative monitoring device is placed in the shaft simulation unit device. The experimental device can visually simulate the flow law of multiphase fluid (oil / gas / water / sand) according to heterogeneous reservoirs, fractured reservoirs and complex deficit forms, performs heterogeneous reservoir sand water production profile testing and separated bin filling effect evaluation experiments, and provides experimental foundation support for efficient development of oil wells.

The application discloses a kind of mine water recharging multi-field coupling simulation experiment system and method, it is related to mine water utilization technical field.The experimental system includes reservoir simulation box, mine water supply system, production water collection and detection system and microbial culture and injection system;Reservoir simulation box is filled with reservoir medium area, cooperate pressure pump, temperature control jacket simulation deep formation pressure and temperature, mine water supply system provides controllable mine water, microbial culture and injection system injects specific microorganism, and production water collection and detection system detect water quality and microbial characteristics.The experimental method is simulated reservoir condition, injects mine water and microorganism, monitors the change of multiple parameters, establishes composite jamming mathematical model and multi-field coupling partial differential equation.The application can realize stress field, hydrodynamic field and so on five-field coupling simulation, provides technical means for groundwater environment evolution and permeability mechanism research.

The invention discloses a simulation system and method of a natural gas hydrate system, electronic equipment and a storage medium. The system comprises a natural gas hydrate system simulation module and a data processing module, wherein the natural gas hydrate system simulation module is used for acquiring hydrate system data corresponding to a target area, establishing a reservoir simulation model corresponding to the target area according to the hydrate system data, and performing simulated gas production simulation based on the reservoir simulation model; and the data processing module is used for collecting simulated gas production data corresponding to the reservoir simulation model in the simulated gas production simulation process and processing the simulated gas production data to obtain a simulation result. Based on the technical scheme, the reservoir simulation model corresponding to the target area is established to simulate the hydrate system of the target area, and the hydrate system of the target area is accurately evaluated according to the simulation data, so that accurate data support can be provided for exploitation of the natural gas hydrate system.

The invention discloses a carbon dioxide geological sequestration simulation device and method, and belongs to the technical field of carbon sequestration simulation. The carbon dioxide geological sequestration simulation device comprises a model box, a simulation reservoir is arranged on the lower layer in the model box, and a simulation cover layer is arranged on the simulation reservoir; the carbon dioxide solution injection module is used for injecting a carbon dioxide solution into the simulated reservoir; the discharged liquid collecting module is used for collecting discharged liquid of the simulated reservoir; the temperature control module is used for controlling the temperature of the model box; the centrifugal module is used for providing gravitational acceleration for the model box; and the data acquisition module is used for detecting and acquiring changes of temperature parameters and pressure parameters of the simulated reservoir and the simulated cover layer. The simulation device provided by the invention simulates the geological storage of carbon dioxide, can observe the change conditions of a carbon dioxide solution in a reservoir and a cover layer under different years, different temperatures and different pressures, and provides support for long-time geological storage of carbon dioxide.

Techniques for modeling a reservoir include identifying a model of a wellbore that includes at least two tubing strings that are open in the wellbore and one or more fluid connections between the wellbore and a reservoir; assigning each of the at least two tubing strings as a single string pseudo-well in the model of the wellbore; numerically coupling the single string pseudo-wells together in the wellbore model; determining one or more well parameters for the modeled wellbore; and executing the modeled wellbore in a reservoir simulator to determine one or more wellbore fluid flow characteristics.

The invention provides a physical model and a preparation method thereof. The model is prepared from a reservoir prepared from a reservoir simulation material and a thin interlayer material, and the thin interlayer material is embedded in the reservoir. The simulation reservoir is prepared by using epoxy resin and silicone rubber, and the thin interlayer material is embedded in the reservoir, so that a physical model similar to the stratum is obtained and is used for thin interlayer seismic response research on continental facies shale development thin interlayers.

A numerical simulation method for fractured oil and gas reservoirs relates to the technical field of oil and gas development, and mainly comprises the following steps: establishing a dual medium model of an oil and gas reservoir, including a dual medium model with a fixed grid and a dual medium model with a non-fixed grid; based on the type of the dual medium model, converting the dual medium model into an equivalent single medium model; calculating the overall elastic energy of the reservoir in the equivalent single medium model, and obtaining the single medium model of the oil and gas reservoir; the present invention converts the complex dual medium model into a corresponding single medium model, which can effectively improve the calculation efficiency for reservoir simulation and reduce the calculation cost, and is suitable for large-scale reservoir simulation or fast solution optimization. Compared with the conventional method of converting dual medium to single medium, the present invention combines the principle of physical seepage process, takes into account practical factors such as the change of grid size after conversion and the actual flow area of ​​the fluid, so that the final conversion result is more accurate.

The application discloses a testing device and method for element sulfur solubility in high-sulfur gas reservoir development process, and the testing device comprises a fluid injection system, a reservoir simulation system, a sulfur solubility metering system and a data tracking and processing system; the fluid injection system is connected with the reservoir simulation system; the reservoir simulation system is connected with the sulfur solubility metering system; the data tracking and processing system is connected with the sulfur solubility metering system; the fluid injection system is used for injecting a sulfur-containing gas sample into the reservoir simulation system and the sulfur solubility metering system; the reservoir simulation system is used for simulating the flow of the sulfur-containing gas sample in a reservoir and a complex interface physicochemical action process; the sulfur solubility metering system is used for metering the sulfur solubility in the sulfur-containing gas sample; and the data tracking and processing system is used for processing data. The testing device in the application comprises two sulfur solubility testing units, so that the testing precision is effectively improved, and the measurement loss and safety risk caused by the flow of the sulfur-containing gas sample in pipelines and valves are reduced.

The application discloses a geological fault simulation device and method, relates to the technical field of geological simulation, and comprises a supporting seat, a simulation concave disc, plate block fault simulation blocks, a reservoir simulation hose and a cover plate. The simulation concave disc is rotatably installed on the supporting seat, the plate block fault simulation blocks are assembled inside the opening side of the simulation concave disc and are provided with two, the reservoir simulation hose is installed in the plate block fault simulation blocks and is adjustable in shape, and the cover plate is arranged on the opening side of the simulation concave disc. The sliding assembly, the adjusting assembly and the sealing mechanism are arranged, the simulation process can be finely adjusted by the adjusting assembly, the plate block fault simulation blocks can be highly sealed by the sealing mechanism, the plate block fault simulation blocks can be highly flexibly adjusted by the sliding assembly and the adjusting assembly, the fine adjustment can be realized in the fault simulation process, and the combination of high sealing performance and high flexible adjustment performance can be simultaneously satisfied.

The invention provides a heavy oil reservoir steam huff and puff simulation device and method, and belongs to the technical field of oil-gas field development. The heavy oil reservoir steam huff and puff simulation device comprises a heat preservation box, a steam generator, an injection system and a reservoir physical model. The steam generator and the reservoir simulation model are arranged in the thermal insulation box; the steam generator comprises an exchange coil pipe, one end of the exchange coil pipe penetrates through the heat preservation box to be connected with the injection system, and the other end of the exchange coil pipe is connected with a reservoir simulation model in the heat preservation box; the steam generator heats distilled water from the injection system into steam through the exchange coil and then outputs the steam into the reservoir simulation model, and the reservoir simulation model simulates steam huff and puff of the stratum heavy oil reservoir through the steam. The steam generator and the reservoir physical model are integrally arranged in the heat preservation box, and the environment temperature for simulating the steam huff and puff process is kept through the heat preservation box, so that the stability of the steam temperature is guaranteed.

A process of determining a future injection performance of a well, a fluid being intended to be injected from a surface network into a geological formation defining a reservoir, the injection performance providing a relationship between the flowrate and a bottom hole flowing pressure, the process comprising obtaining a first set of data (VLP and bottom hole enthalpy), obtaining a surface network simulator, and a reservoir simulator, providing the reservoir simulator with a current working point of the well, running the reservoir simulator and obtaining updated pressure conditions in the reservoir, calculating a second set of data (IPR) for a next time step, providing the surface network simulator with the second set of data, and obtaining the bottom hole flowing pressure for the next time step and an updated working point. The injection performance is obtained from the second set of data.

The present invention pertains to the field of petroleum, and more specifically to the areas of reservoir modelling, simulation and evaluation, and discloses a method for processing data obtained through Raman spectroscopy in order to determine the thermal maturity of organic matter in rock, based on calibration using vitrinite reflectance standards, using different excitation wavelengths.

The utility model relates to an experimental device for simulating the thermal recovery process of a heavy oil reservoir under the action of top water and bottom water, which comprises an experimental box, and a reservoir simulation container is loaded in the experimental box; a top water cavity, a heavy oil reservoir cavity and a bottom water cavity are sequentially arranged in the reservoir simulation container from top to bottom; the top water cavity, the heavy oil reservoir cavity and the bottom water cavity are provided with a top water connector, a steam pipe connector and a bottom water connector respectively. Wherein the heavy oil reservoir cavity is filled with a mixture of quartz sand and heavy oil and is used for simulating the heavy oil reservoir; the process that the top water enters the heavy oil reservoir cavity through the top water cavity and the process that the bottom water enters the heavy oil reservoir cavity through the bottom water cavity are respectively used for simulating the effects of the top water layer and the bottom water layer on the heavy oil reservoir; the fluid channeling process of the steam in the mixture of the quartz sand and the heavy oil in the cavity of the heavy oil reservoir is used for simulating the thermal recovery process of the heavy oil reservoir.

The present invention belongs to the field of shale reservoir development in the technology of oil and gas reservoir development, and discloses a pressure-soaking-infiltration-drainage integrated experimental device and method under the actual temperature and pressure conditions of a shale reservoir. The device includes: a power system, a fluid supply system, a reservoir simulation system, a temperature control system, and an electronic metering system; the power system is used to provide pressure to the fluid supply system; the fluid supply system is used to supply fluid to the reservoir simulation system, wherein the fluid is oil during the saturated oil process or fracturing fluid during the displacement process; the reservoir simulation system is used to simulate the integrated process of fracturing-soaking-infiltration-flowback under the actual temperature and pressure conditions of the target shale reservoir; the temperature control system is used to simulate the actual temperature of the shale reservoir; the electronic metering system is used to measure the oil saturation in the produced fluid. This device is resistant to high temperature and high pressure, can simulate the actual reservoir environment of ultra-high temperature and high pressure in the shale reservoir, and can realize the integrated process of fracturing-soaking-infiltration-flowback considering the actual formation pressure of the shale.

This invention belongs to the field of experimental technology for oil and gas field development, specifically relating to an experimental device and method for CO2 injection at the gas-water interface to suppress bottom water displacement of natural gas. The device includes a reservoir simulation system, a fluid injection system, a multi-dimensional visualization monitoring system, and a production metering system. The reservoir simulation system uses a sand-filled pipe to simulate a vertical reservoir, and a temperature control module regulates the temperature of the sand-filled pipe. The fluid injection system uses a fixed-point injection pipe with adjustable depth that can penetrate deep into the pipe body to precisely inject CO2 into the gas-water interface. The multi-dimensional visualization monitoring system uses a scanner and krypton tracers mixed with simulated natural gas and sodium iodide tracers mixed with simulated formation water to achieve dynamic monitoring of multiphase fluids throughout the displacement process. This invention can simulate the vertical development characteristics of deep bottom water gas reservoirs with high fidelity, intuitively revealing the mechanism of CO2 inhibition of bottom water coning, and providing precise experimental basis for optimizing gas reservoir development schemes.

Example methods and systems for conditioning hydrocarbon reservoir sector models using numerical well testing are disclosed. One example method includes obtaining well-test data of a well. A reservoir sector model of a sector of a reservoir is obtained, where the sector includes at least an area of the reservoir associated with the well-test data and the well. The reservoir sector model is conditioned by tuning parameters of the reservoir sector model to match a response of the conditioned reservoir sector model to the well-test data, where conditioning the reservoir sector model includes adjusting multiple properties in the reservoir sector model based on the well-test data and at least one of well logs, production logging surveys, or distributed pressure measurements associated with the reservoir. The conditioned reservoir sector model is provided to determine properties of the reservoir for robust reservoir simulation and efficient development of underlying hydrocarbon resource of the reservoir.

The present application belongs to the technical field of oil and gas development and exploitation engineering, and particularly relates to an experimental device for testing sand-water production profile of heterogeneous reservoir and evaluating water control effect of compartment filling and application thereof. The experimental device comprises a gas supply system, a constant-flow liquid supply system, a data measurement and collection system, a reservoir simulation unit device, a wellbore simulation unit device and a wellbore sand-water production profile quantitative monitoring device. The wellbore simulation unit device is embedded into the reservoir simulation unit device, and the wellbore sand-water production profile quantitative monitoring device is placed in the wellbore simulation unit device. The experimental device can be used for heterogeneous reservoirs, fractured reservoirs and complex depletion patterns, can visually simulate the flow rule of multiphase fluid (oil / gas / water / sand), can test the sand-water production profile of heterogeneous reservoir and evaluate the effect of compartment filling, and can provide experimental basis support for efficient development of oil wells.

The invention relates to an indoor test method for achieving casing deformation of an adjacent wellbore caused by natural fracture slippage. The indoor test method for achieving casing deformation of the adjacent wellbore caused by natural fracture slippage comprises the following steps that a reservoir simulation sample containing the characteristics of double wellbores and natural fractures is prepared; carrying out a hydrostatic test based on the reservoir simulation sample, and dynamically monitoring various data in the experiment process to obtain experiment data; analyzing and processing the experimental data, and performing quantitative evaluation in combination with the final state of the reservoir simulation sample. The method provided by the invention can be used for quantitatively evaluating the influence caused between the adjacent wellbores on the tight reservoir rock mass under different crustal stress characteristics and fracturing process parameters. Certain technical support is provided for optimization of fracturing optimization design parameters, and the method has certain practical significance in promoting exploitation of unconventional reservoirs.