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    In situ gelation of polymers during waterflooding
    8.
    发明授权
    In situ gelation of polymers during waterflooding 失效
    在水泥中聚合物的初步凝胶

    公开(公告)号：US3658129A

    公开(公告)日：1972-04-25

    申请号：US3658129D

    申请日：1970-09-01

    Applicant: PHILLIPS PETROLEUM CO

    Inventor： LANNING WILLIAM C ,  GALL JAMES W

    IPC: C09K8/512 ,  E21B33/138 ,  E21B43/20

    CPC classification number: C09K8/512

    Abstract: A method for plugging waterflood zones through the in situ production of gelatinous materials derived from injecting a solution containing a water-soluble bivalent metal salt and a water-soluble polymer of high molecular weight having groups chemically reactive with trivalent metal ions into a waterflood zone followed by the injection of air which converts bivalent metal ions to trivalent metal ions thereby resulting in the aforementioned gelatinous plugging material.

    Abstract translation: 通过原位生产凝胶状材料来堵塞注水区域的方法，其通过将含有水溶性二价金属盐和具有与三价金属离子化学反应的基团的具有高分子量的水溶性聚合物的溶液注入到水驱区中而得到， 通过注入将二价金属离子转化为三价金属离子的空气，由此导致上述凝胶状堵塞材料。

    Nuclear cavity configuration control
    9.
    发明授权
    Nuclear cavity configuration control 失效
    核心配置控制

    公开(公告)号：US3611933A

    公开(公告)日：1971-10-12

    申请号：US3611933D

    申请日：1967-12-29

    Applicant: PHILLIPS PETROLEUM CO

    Inventor： LANNING WILLIAM C

    IPC: F42D1/00 ,  F42D99/00 ,  F42D7/00

    CPC classification number: F42D1/00

    Abstract: The configuration of a nuclear cavity is controlled and/or enlarged by placing auxiliary conventional explosives, directional explosives or small nuclear charges approximately at the circumference of the chimney or cavity expected and exploding these simultaneously or sequentially before, during and/or after the nuclear shock to create a cavity of desired shape which preferably will be substantially cylindrical. In one embodiment, the invention is applied to the enlargement and control of the shape of the desired cylindrical hole or cavity shot in oil shale thus to substantially enlarge the underground retort volume and amount of shale oil which can be recovered from a given formation area. In an embodiment described, the auxiliary explosives surround the expected cavity just outside its circumference. There are placed in the roof as well as at different levels across the cross-sectional area of the expected hole additional auxiliary explosives wherewith to control the roof configuration and to further enlarge the cavity, if needed. Sequential drilling and exploding of a series of charges, especially in the area of the top of the cavity, is disclosed.

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