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    Gas generating compositions
    63.
    发明授权
    Gas generating compositions 有权

    公开(公告)号：US10858565B2

    公开(公告)日：2020-12-08

    申请号：US16282245

    申请日：2019-02-21

    申请人： Saudi Arabian Oil Company

    发明人： B. Raghava Reddy

    IPC分类号： C09K8/38 ,  C09K8/035 ,  C09K8/42 ,  C09K8/62 ,  C09K8/60

    摘要： The present application provides a gas-generating aqueous fluid containing a gas-generating compound like an azo compound, and an organic amine like a primary, secondary or tertiary amine, a hydrazine, a hydrazide, or a semicarbazide. The aqueous fluid may also a viscosifier, and a foaming surfactant. The present application also provides a method of using the gas-generating composition to modulate density of a wellbore fluid for use in downhole applications. The method optionally includes adding an oxidizer to the wellbore fluid.

    Use of gaseous phase natural gas as a carrier fluid during a well intervention operation
    64.
    发明授权
    Use of gaseous phase natural gas as a carrier fluid during a well intervention operation 有权

    公开(公告)号：US10760390B2

    公开(公告)日：2020-09-01

    申请号：US15753925

    申请日：2016-09-08

    申请人： Halliburton Energy Services, Inc.

    发明人： Grant W. Nevison

    IPC分类号： E21B43/16 ,  C09K8/38 ,  C09K8/594 ,  C09K8/524 ,  C09K8/52 ,  C09K8/532 ,  C09K8/536 ,  E21B43/26 ,  C09K8/70 ,  C09K8/94

    摘要： Methods for servicing a hydrocarbon well using natural gas are provided. The method can include preparing a working fluid comprising about 5 vol % to about 100 vol % of natural gas. A quantity of the natural gas in the working fluid can be sufficient to form a heterogeneous phase well servicing mixture of a gaseous phase natural gas and a solid or liquid phase recovery target material under specified well intervention conditions. During the well servicing operation and under the specified well intervention conditions, the working fluid can be injected into the well and mixing the working fluid with the recovery target material in the well to form the heterogeneous phase well servicing mixture. The natural gas can be in a gas phase and can serve as a carrier fluid for the recovery target material. At least a portion of the heterogeneous phase well servicing mixture can be recovered at surface.

    Hydraulic fracturing proppant
    65.
    发明授权
    Hydraulic fracturing proppant 有权

    公开(公告)号：US10723938B2

    公开(公告)日：2020-07-28

    申请号：US14338152

    申请日：2014-07-22

    申请人： Ecopuro, LLC

    发明人： William L. Johnson, Sr.

    IPC分类号： C09K8/80 ,  E21B43/267 ,  C09K8/70 ,  C09K8/03 ,  C09K8/62 ,  E21B43/26 ,  C09K8/38

    摘要： An improvement over known hydraulic fracturing fluids. Boundary layer kinetic mixing material is added to components of fracturing fluid wherein kinetic mixing material is a plurality of particles wherein at least 25% of particles are several types, i.e., having surface characteristics of thin walls, three dimensional wedge-like sharp blades, points, jagged bladelike surfaces, thin blade surfaces, three-dimensional blade shapes that may have shapes similar to a “Y”, “V” or “X” shape or other geometric shape, slightly curved thin walls having a shape similar to an egg shell shape, crushed hollow spheres, sharp bladelike features, 90° corners that are well defined, conglomerated protruding arms in various shapes, such as cylinders, rectangles, Y-shaped particles, X-shaped particles, octagons, pentagon, triangles, and diamonds. The resulting fluid exhibits improved dispersion of additives as well providing stabilization to a hydraulic fracture by reducing incidents of proppant grain column collapse and by reducing proppant flow back.

    Apparatus for making underground reservoir
    68.
    发明授权
    Apparatus for making underground reservoir 有权

    公开(公告)号：US10415388B2

    公开(公告)日：2019-09-17

    申请号：US15825084

    申请日：2017-11-28

    申请人： Sichuan University

    发明人： Jianfeng Liu ,  Heping Xie ,  Yufei Wang ,  Lingzhi Xie ,  Ru Zhang

    IPC分类号： E21D13/00 ,  B65G5/00 ,  E21B43/28 ,  E21B43/40 ,  C09K8/38

    摘要： A device for constructing an underground reservoir by dissolving limestone using carbon dioxide. The device includes a CO2 storage tank; an absorption tower; a decompression valve; a gas-liquid separator; a crystallizer; a vacuum pump; a buffer tank; a first booster pump; a second booster pump; and a third booster pump. The decompression valve is connected to a limestone layer, and is connected to the gas-liquid separator. The absorption tower is connected between the gas-liquid separator and the limestone layer.