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    Creating high conductivity layers in propped formations
    32.
    发明授权
    Creating high conductivity layers in propped formations 有权

    公开(公告)号：US11313214B2

    公开(公告)日：2022-04-26

    申请号：US17052363

    申请日：2018-08-10

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Philip D. Nguyen ,  Ronald Glen Dusterhoft ,  Larry Steven Eoff

    IPC: E21B43/267 ,  C09K8/66 ,  C09K8/80

    Abstract: Provided are methods and system for propping a fracture. An example method includes introducing a first fracturing fluid into the fracture; wherein the first fracturing fluid comprises a first amount of high crush strength proppant and a first aqueous base fluid; wherein the high crush strength proppant has a crush strength equal to or exceeding 4000 psi. The method further includes introducing a second fracturing fluid into the fracture; wherein the second fracturing fluid comprises a first amount of low crush strength proppant and a second aqueous base fluid; wherein the low crush strength proppant has a crush strength less than 4000 psi. The method also includes introducing a third fracturing fluid into the fracture; wherein the third fracturing fluid comprises a second amount of high crush strength proppant and a third aqueous base fluid.

    Using brine resistant silicon dioxide nanoparticle dispersions to improve oil recovery
    33.
    发明授权
    Using brine resistant silicon dioxide nanoparticle dispersions to improve oil recovery 有权

    公开(公告)号：US11180692B2

    公开(公告)日：2021-11-23

    申请号：US17081154

    申请日：2020-10-27

    Applicant: Nissan Chemical America Corporation

    Inventor： David L. Holcomb ,  Yusra Khan Ahmad ,  John Edmond Southwell

    IPC: C09K8/84 ,  C09K8/72 ,  C09K8/03 ,  C09K8/66 ,  C09K8/60 ,  C09K8/80 ,  E21B43/26

    Abstract: This invention describes and claims the stimulation of several Wolfcamp and Bone Springs targeted wells in the northern Delaware Basin using fracturing treatments and a new method employing relatively small pre-pad pill volumes of Brine Resistant Silicon Dioxide Nanoparticle Dispersions ahead of each stage of treatment have been successfully performed. The invention includes a method of extending an oil and gas system ESRV comprising the steps of adding a Brine Resistant Silicon Dioxide Nanoparticle Dispersion (“BRINE RESISTANT SDND”) to conventional oil well treatment fluids. The invention also includes a method of increasing initial production rates of an oil well by over 20.0% as compared to wells either not treated with the BRINE RESISTANT SDND technology or treated by conventional nano-emulsion surfactants. The Method focuses on the steps of adding a Brine Resistant Silicon Dioxide Nanoparticle Dispersion to conventional oil well treatment fluids.

    Use of micro-particle amorphous silicate in well stimulation
    34.
    发明授权
    Use of micro-particle amorphous silicate in well stimulation 有权

    公开(公告)号：US11124700B2

    公开(公告)日：2021-09-21

    申请号：US17024706

    申请日：2020-09-18

    Applicant: Oil Field Packaging LLC

    Inventor： Michael John Caple ,  John Stabenau

    IPC: C09K8/92 ,  C09K8/66 ,  E21B43/267 ,  C09K8/80

    Abstract: A treatment additive for hydraulic fracturing made of heated silica to create amorphous silicate with a Mohs hardness between 4.5 and 6 and a particles distribution with maximum diameter between 5 and 2600 microns that has been heated and shaped into amorphous shapes with large surface area to weight ratio and ultra-low settling velocity used to prop microfractures distal from well bore, especially in low viscosity and high temperature wells. The microparticle size and shape allow the treatment to effectively hold microfractures open, stimulate backpressure, and prevent leakoff; which has the added benefit of improving primary fracture development; refrac and frac protect productivity; and reduces the likelihood of interference between offset wells. An additional benefit is that the treatment doesn't contain crystalline silica.

    Reservoir stimulation method and system
    38.
    发明授权
    Reservoir stimulation method and system 有权

    公开(公告)号：US11098568B2

    公开(公告)日：2021-08-24

    申请号：US15712899

    申请日：2017-09-22

    Applicant: STATOIL GULF SERVICES LLC

    Inventor： Jason Bryant ,  Auristela Carolina Vasquez Quintero

    IPC: E21B43/267 ,  C09K8/80 ,  C09K8/68 ,  E21B43/30 ,  C09K8/66

    Abstract: A method of stimulating a formation containing two or more wellbores includes simultaneously stimulating a first region of each wellbore using a stimulation fluid so as to create a primary fracture in the first region of each wellbore, wherein the first region comprises a first opening or openings allowing fluid communication between each wellbore and the formation, wherein the first region has a first stimulated lateral length and wherein the flow rate of the stimulation fluid through the first opening or openings is greater than 1 barrel per minute per foot of the first stimulated lateral length.

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