5 results about "Reservoir modelling" patented technology

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.

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.

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.

This invention provides a method for constructing a kinetic model of carbon dioxide mineralization and storage reaction considering optimization algorithms, belonging to the field of mining technology. This invention obtains the mineral composition of reservoir cores and constructs a graph database to constrain parameter boundaries. It designs a multi-temperature gradient batch reaction experiment combined with an active learning mechanism to optimize the sampling scheme. A hierarchical optimization strategy is used to gradually invert kinetic parameters from single-mineral to multi-mineral systems. A Gaussian process proxy model is constructed to accelerate the process using coarse and fine grid proxying. The uncertainty of parameters is quantified through Markov chain Monte Carlo sampling. Finally, the laboratory parameters are corrected to the reservoir scale and imported into a reservoir simulator. This invention solves the technical problem of simultaneously ensuring the convergence and identification accuracy of kinetic parameter inversion calculations in multi-mineral coupled systems.

This invention provides an integrated wellbore-reservoir simulation device, comprising an integrated wellbore-reservoir functional base plate and a sealing plate fastened to the functional base plate; the functional base plate contains a wellbore simulation cavity and a reservoir simulation cavity located on one side of the wellbore simulation cavity along its length; a through hole connects the wellbore simulation cavity and the reservoir simulation cavity; the reservoir simulation cavity is filled with a medium simulating an oil reservoir. The functional base plate contains both a wellbore simulation cavity and a reservoir simulation cavity to simulate the wellbore structure and the porous medium space of the reservoir. This invention constructs initial reservoir conditions through an injection system and injects water, gas, or steam into the simulation device using a constant flow rate or constant pressure to achieve oil displacement simulation. Combined with a data acquisition system, the fluid migration process and production are observed and measured in real time. This invention achieves coupled simulation of the wellbore and reservoir flow processes, improving the accuracy of the simulation results and their engineering reference value.