METHOD FOR CALCULATING SINGLE-WELL CONTROLLED RESERVE OF LOW-PERMEABILITY/TIGHT GAS RESERVOIR AND ANALYZING RESIDUAL GAS THEREOF

    公开(公告)号:US20210002999A1

    公开(公告)日:2021-01-07

    申请号:US16861493

    申请日:2020-04-29

    Abstract: The present invention belongs to the technical field of oil and gas field development, and discloses a method for calculating a single-well controlled reserve of a low-permeability/tight gas reservoir and analyzing residual gas thereof. The method includes: calculating a reserve controlled by each gas well in a block by using a gas reservoir dynamic reserve calculation method; establishing a new reserve calculation formula for solution and comparative analysis by an example; and quantitatively analyzing an effect of a startup pressure gradient and a stress sensitivity on a calculation result of the single-well controlled reserve, wherein the analysis of the factors affecting reserve calculation shows that, when the startup pressure gradient reaches 0.02 MPa/m, the calculated reserve is significantly reduced compared with a conventional method, but when the startup pressure gradient is greater than 0.1 MPa/m, the effect gradually stabilizes.

    Device for simulating carbon dioxide storage in deep saline aquifer

    公开(公告)号:US11940367B2

    公开(公告)日:2024-03-26

    申请号:US18501936

    申请日:2023-11-03

    CPC classification number: G01N15/0806 G01N33/24

    Abstract: A device for simulating carbon dioxide storage in a deep saline aquifer, including a CO2 gas source, first and second valves, first and second pressure pumps, first, second and third pressure gauges, a water storage tank, a simulation box, a first flow meter, a gas-liquid separator, a recycling tank, a microcomputer-display assembly, a structure plate, core holders, an injection pipeline, a connection pipeline, a baffle, a piezometer, a second flow meter, a heater, a lifter and an acoustic logging tool. The CO2 gas source, the first valve, the first pressure pump and the first pressure gauge for gas injection. The water storage tank, a second pressure pump and a second pressure gauge for water injection. The second valve, the third pressure gauge, the first flow meter, the gas-liquid separator and the recycling tank form an output pipeline.

Patent Agency Ranking