37 results about "Reservoir modelling" patented technology

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.

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 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 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.

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.

A method comprises measuring a pressure at a plurality of times and a measured flow rate in a well. A measured productivity index (PI) is determined based, at least in part, on the measured flow rate and the pressure at the plurality of times. A flow rate at a second time is simulated, and a fluid pressure at the second time and a third time is simulated. A simulated PI is simulated based, at least in part, on the flow rate at the second time, and the fluid pressure at the second time and at the third time. An updated reservoir simulation model is generated by updating at least one parameter of the reservoir simulation model based, at least in part, on a difference between the measured PI and the simulated PI.

The invention relates to the technical field of oil-gas exploration and development, in particular to a compact and non-compact reservoir filling simulation contrast experiment device, which comprises an experiment box, a temperature controller, a gas inlet pipe, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the sliding rail is laid in the experiment box; the first sliding seat and the second sliding seat are arranged on the sliding rail in a sliding manner; the two reservoir simulation components are respectively a first reservoir simulation component and a second reservoir simulation component; wherein the first reservoir simulation assembly is fixed on the first sliding seat and is used for simulating a tight reservoir in a layered manner; wherein the second reservoir simulation assembly is fixed on the second sliding seat and is used for simulating a non-tight reservoir in a layered manner; and the auxiliary assembly is used for providing filling simulation assistance for the two reservoir simulation assemblies. The method reduces the cost, improves the efficiency, and facilitates the optimization of a mining scheme.

The present application relates to a kind of deep water unconsolidated sediment cap rock sealing capacity determination method, it is related to oil and gas field development technical field, comprising: obtaining the geological data of multiple sample wells in target area, the geological data includes the particle size of reservoir, cap rock at each sample well, mineral composition and the overburden water depth of cap rock;According to the particle size of reservoir, cap rock, mineral composition and overburden water depth, determine the particle size, mineral composition data of simulation reservoir, simulation cap rock in mud sand sealing simulation device and multiple overburden water column height;Carrying out cap rock breakthrough pressure test simulation experiment, obtains the experimental breakthrough pressure of simulation cap rock under each overburden water column height condition;According to experimental breakthrough pressure, calculate the actual breakthrough pressure of cap rock at each sample well;Based on the overburden water depth and actual breakthrough pressure of cap rock at each sample well, build the cap rock sealing capacity model of target area;According to cap rock sealing capacity model, determine the sealing capacity of cap rock at target point in target area.

The invention discloses a chemical reaction hydrocarbon generation and heat release synergistic steam flooding simulation system and method. The chemical reaction hydrocarbon generation and heat release synergistic steam flooding simulation system comprises a reservoir simulation device, an injection device, a metering device and a data processing device. The reservoir simulation device is filled with quartz sand as a simulation rock core, and crude oil and water are stored in the simulation rock core; the injection device comprises a steam injection assembly and a reactant injection assembly, the metering device comprises an oil phase metering unit used for metering the oil yield, and the data processing device is used for processing the measurement result of the metering device. Therefore, reliable theoretical guidance is provided for the development of heavy oil reservoirs.

The present invention discloses an experimental device and method for simulating vibration of annular pressure gas well tubing. Liquid is injected into the annulus of a cylinder to form annular pressure, and high-pressure gas is injected into a reservoir simulation unit. The high-pressure gas flows from the bottomhole simulation space of the reservoir simulation unit into a test tubing at the axis of the cylinder and is released through a high-pressure gas discharge pipeline. Different closing speeds of the solenoid valve are used to simulate different well shut-in times. The rapid closing of the solenoid valve generates pressure fluctuations, forming a water hammer effect, causing the test tubing to vibrate, thereby simulating tubing vibration. Stress and strain gauges can monitor the dynamic response process of the test tubing vibration and transmit the data to a computer for real-time storage. The device and method of the present invention can not only effectively simulate the vibration process of the tubing in annular pressure gas well tubing, but also quantitatively analyze the stress and strain conditions at different positions of the tubing during the vibration process. This breaks through the limitations of theoretical research and more realistically simulates the vibration of the tubing in annular pressure gas well tubing.

The invention provides a high-quality reservoir simulation method and device for tight sandstone and computer equipment, and belongs to the technical field of oil-gas exploration. The high-quality reservoir simulation method for the tight sandstone comprises the following steps: establishing a three-dimensional structure stratum framework model of a target oil and gas reservoir according to three-dimensional seismic data; obtaining sand shale discrete data, sedimentary facies discrete data and granularity lithofacies discrete data according to the obtained parameter interpretation data and the three-dimensional structure stratum framework model; performing simulation based on the sand shale discrete data, the sedimentary facies discrete data and the granularity lithofacies discrete data to obtain a granularity lithofacies three-dimensional geologic model; and determining a high-quality reservoir three-dimensional distribution model of the target oil and gas reservoir according to the granularity lithofacies three-dimensional geologic model, wherein the high-quality reservoir three-dimensional distribution model is used for describing a high-quality reservoir of the target oil and gas reservoir. According to the method, the high-quality reservoir of the tight sandstone is constrained and simulated by establishing the granularity lithofacies three-dimensional geologic model of the tight sandstone, and three-dimensional distribution and accurate simulation of different lithofacies are quantitatively reflected.

A method for reservoir simulation is disclosed. The method includes: selecting a coarse grid size for a plurality of grid blocks in a reservoir model of a reservoir (300); calculating, by a computer processor and based on at least water and oil fractional flow curves, a water saturation at a water front within a grid block of the plurality of grid blocks and an average water saturation for the grid block (302, 304); and calculating, by the computer processor and based on at least the water saturation at the water front within the grid block and the average water saturation for the grid block, a water saturation distribution in the reservoir by solving a reservoir simulator equation (308), wherein solving the reservoir simulator equation includes calculating a single water saturation value for each of the plurality of grid blocks based on the coarse grid size.

Examples of methods and systems are disclosed. The methods may include measuring, using flowmeter, a measured fluid flow rate at a plurality of depths in a well penetrating a hydrocarbon reservoir. The methods may also include, determining, using a reservoir simulator, a normalized cumulative fluid flow rate for the well based on the measured fluid flow rate at the plurality of depths, receiving a reservoir simulation model for the hydrocarbon reservoir, determining a normalized fluid flow capacity for the well based on the reservoir simulation model, and updating the reservoir simulation model based, at least in part, on the normalized cumulative fluid flow rate and the normalized fluid flow capacity.

A method for performing a reservoir simulation includes receiving input data. The method also includes generating one or more subsurface models based upon the input data. The method also includes training a first artificial intelligence (AI) model based upon the one or more subsurface models to produce a first trained AI model. The method also includes training a second AI model by hiding some of the input data to produce a second trained AI model. The method also includes training a third AI model to produce a third trained AI model. The third AI model is trained using simulation performance metrics from simulations performed to train the first AI model and the second AI model. The method also includes performing the reservoir simulation using the first trained AI model, the second trained AI model, and / or the third trained AI model.