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    MODIFIED NONIONIC SURFACTANT FORMULATIONS FOR ENHANCED OIL RECOVERY
    11.
    发明申请
    MODIFIED NONIONIC SURFACTANT FORMULATIONS FOR ENHANCED OIL RECOVERY 审中-公开
    用于增强油回收的改性非离子表面活性剂配方

    公开(公告)号：US20170044422A1

    公开(公告)日：2017-02-16

    申请号：US15278663

    申请日：2016-09-28

    Applicant: Dow Global Technologies LLC

    Inventor： Sayeed Abbas ,  Aaron W. Sanders ,  Troy Knight ,  Pramod D. Patil ,  Brenna White ,  Susan K. Falcone-Potts ,  Martha Hernandez

    IPC: C09K8/584 ,  C09K8/58 ,  E21B43/16 ,  C09K8/594

    CPC classification number: C09K8/584 ,  C09K8/58 ,  C09K8/594 ,  E21B43/164 ,  E21B43/166

    Abstract: Embodiments of the present disclosure include modified nonionic surfactant formulations having a nonionic surfactant and a pour point depressant, where the modified nonionic surfactant formulations have a pour point of −54° C. to −75° C. In one or more embodiments, the modified nonionic surfactant formulations can be introduced into a flow of carbon dioxide, where the flow of carbon dioxide and the modified nonionic surfactant formulation are injected into an oil containing reservoir. In one or more embodiments, an emulsion of the carbon dioxide and the nonionic surfactant form in the oil containing reservoir, where the use of the pour point depressant provides minimal interference in forming the emulsion.

    Abstract translation: 本公开的实施方案包括具有非离子表面活性剂和倾点下降剂的改性非离子表面活性剂制剂，其中改性非离子表面活性剂制剂的倾点为-54℃至-75℃。在一个或多个实施方案中， 可以将非离子表面活性剂制剂引入二氧化碳流中，其中将二氧化碳和改性非离子表面活性剂制剂的流量注入含油储存器中。 在一个或多个实施方案中，在含油储存器中形成二氧化碳和非离子表面活性剂的乳液，其中使用倾点下降剂在形成乳液中提供最小的干扰。

    ENHANCED CRUDE OIL RECOVERY FROM SUBTERRANEAN CRUDE OIL-BEARING SANDSTONE RESERVOIRS
    12.
    发明申请
    ENHANCED CRUDE OIL RECOVERY FROM SUBTERRANEAN CRUDE OIL-BEARING SANDSTONE RESERVOIRS 有权

    公开(公告)号：US20220145163A1

    公开(公告)日：2022-05-12

    申请号：US17431880

    申请日：2020-02-17

    Applicant: Dow Global Technologies LLC

    Inventor： Amit Katiyar ,  Troy E. Knight ,  Pramod D. Patil ,  Neeraj Rohilla

    IPC: C09K8/584

    Abstract: The present disclosure provides for a sandstone-containing oil reservoir additive composition that includes (a) a nonionic wettability alteration agent having Formula (I): and (b) an injection fluid. For Formula (I), R is an alkyl residue from a branched secondary alcohol initiator, where R can have a carbon number of C4 to C10, x is from 3 to 10 and y is from 1 to 20. The injection fluid can be selected from the group consisting of sea water, engineered water, injection brine, produced brine or combinations thereof. The nonionic wettability agent in the sandstone reservoir additive composition can be from 0.01 weight percent (wt %) to 20 wt % based on the total weight of the sandstone reservoir additive composition. The sandstone-containing oil reservoir additive composition can be used in enhance oil recovery operations, such as a waterflooding operation or a carbon dioxide flooding operation.

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