Cyclical CO
    162.
    发明授权

    公开(公告)号:US11918952B2

    公开(公告)日:2024-03-05

    申请号:US17748021

    申请日:2022-05-18

    Abstract: Systems and methods are provided for performing CO2 sorption and desorption using a sorbent structure with an integrated heat pump. The integrated heat pump can allow at least a portion of the heat generated during sorption to be recovered by forming steam from water. The steam raised during the sorption process can then be compressed and optionally heated to raise the temperature of the steam. The compressed and optionally heated steam can then be used as at least a portion of the steam for desorption of CO2 in the same sorbent bed or a different sorbent bed. By recovering the heat of sorption to raise steam, substantial energy savings can be achieved relative to a conventional process.

    Wave manipulator for use in electrohydraulic fracture stimulations

    公开(公告)号:US11891883B2

    公开(公告)日:2024-02-06

    申请号:US17455950

    申请日:2021-11-22

    Inventor: Rainer N. Dahms

    CPC classification number: E21B43/26

    Abstract: Methods for electrohydraulic fracture stimulation of formations may include producing an acoustic shock wave having a compressive wave character in a wellbore penetrating a formation and manipulating the acoustic shock wave. The acoustic shock wave may be manipulated in one or more of the following steps: channeling the acoustic shock wave down the wellbore to change a shape of the acoustic shock wave to less spherical; converting the compressive wave character to an expansion wave character; and changing an acoustic impedance of the acoustic shock wave. The acoustic shock wave having the changed shape, the expansion wave character, and the changed acoustic impedance is distributed into the formation.

    SYSTEM AND METHOD FOR INJECTOR WARM-BACK TIME OPTIMIZATION FOR ZONAL ALLOCATION IN RESERVOIRS

    公开(公告)号:US20240026775A1

    公开(公告)日:2024-01-25

    申请号:US18322338

    申请日:2023-05-23

    CPC classification number: E21B47/07

    Abstract: Herein disclosed are methods and systems related to processes for injection wells generally utilized in the oil and gas industry. The methods herein include a method of estimating the relative cumulative volume of fluids injected into multiple zones of an injection well located in a hydrocarbon reservoir, the injection well including a plurality of zones. The method comprises injecting fluid into a wellbore of the injection well. The method further includes measuring temperature at points along the wellbore to produce a warm-back data set that includes data for a plurality of times and depths. The method also includes modifying an initial geotherm using only data from the warm-back data set that is in a middle-time region (MTR) of the warm-back data set to produce a calculated pseudo-geotherm. The calculated pseudo-geotherm may be used to estimate a volume of fluid injected into each of the plurality of zones.

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