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    Salt tolerant friction reducer
    1.
    发明授权
    Salt tolerant friction reducer 有权

    公开(公告)号：US11261361B2

    公开(公告)日：2022-03-01

    申请号：US16524746

    申请日：2019-07-29

    申请人： SOLVAY USA INC.

    发明人： Kevin Frederick ,  Shih-Ruey Chen ,  Randy Loeffler

    IPC分类号： C09K8/68 ,  C09K8/00 ,  C09K8/60 ,  C09K8/88 ,  C09K8/86

    摘要： A friction reducing treatment solution that includes water, from 100 to 500,000 ppm of total dissolved solids, and from 0.5 to 3 gallons per thousand gallons of a water-in-oil emulsion containing a water soluble polymer. The total dissolved solids include at least 10 weight percent of a multivalent cation. The water-in-oil emulsion includes an oil phase and an aqueous phase, where the oil phase is a continuous phase containing an inert hydrophobic liquid and the aqueous phase is present as dispersed distinct particles in the oil phase and contains water, the water soluble polymer, and surfactants and an inverting surfactant. The water soluble polymer is made up of 30 to 60 weight percent of a non-ionic monomer, 5 to 50 weight percent of a sulfonic acid containing monomer, and 10 to 60 weight percent of a cationic monomer and makes up from 5 to 40 weight percent of the water-in-oil emulsion.

    Cleaning and separating fluid and debris from core samples and coring systems
    6.
    发明授权
    Cleaning and separating fluid and debris from core samples and coring systems 有权

    公开(公告)号：US09951574B2

    公开(公告)日：2018-04-24

    申请号：US14899065

    申请日：2015-07-30

    申请人： Halliburton Energy Services, Inc.

    发明人： Donald Clifford Westacott ,  Matthew L. Lee

    IPC分类号： E21B25/02 ,  E21B25/10 ,  E21B49/06 ,  C09K8/00

    CPC分类号： E21B25/10 ,  C09K8/00 ,  E02D2300/00 ,  E21B25/02 ,  E21B25/08 ,  E21B49/06

    摘要： Coring tools including a core tube assembly; a carrier chamber defined within the core tube assembly for storing one or more core samples drilled from a downhole formation having a wellbore fluid therein, wherein the wellbore fluid has a wellbore fluid density; a non-hydrocarbon, non-reactive heavy weight fluid (“HWF”) present within the carrier chamber, the HWF exhibiting a HWF density of about 2 pounds per gallon greater than the wellbore fluid density; a pressure housing cover selectively rotatable between (1) an open position, where the one or more core samples are able to be inserted into the carrier chamber, and (2) a closed position, where the carrier chamber is sealed; and a cover activation mechanism coupled to the core tube assembly and operable to move the pressure housing cover between the closed position and the open position.