Explosively fracturing formations in wells
    1.
    发明授权
    Explosively fracturing formations in wells 失效
    在井中爆炸破裂

    公开(公告)号:US3587743A

    公开(公告)日:1971-06-28

    申请号:US3587743D

    申请日:1970-03-17

    发明人: HOWARD GEORGE C

    CPC分类号: E21B43/305 E21B43/263

    摘要: IN ORDER TO INCREASE DRAINAGE FROM A POROUS BUT LOW PERMEABILITY RESERVOIR ROCK INTO WELLS, A PLURALITY OF WELLS ARE DRILLED INTO THE RESERVOIR ROCK. HYDRAULIC FRACTURING IS EMPOLYED TO FRACTURE BETWEEN WELLS IN THE PAY FORMATION. A LOW FLUID LOSS LIQUID EXPLOSIVE IS PLACED IN ALL WELLS. IT ALSO FILLS THE FRACTURE. PREFERABLY EACH WELL IS STEMMED BY PLACING A LONG MECHANICAL OBSTRUCTION IMMEDIATELY ABOVE THE LIQUID EXPLOSIVE. DETONATION OF THE EXPLOSIVE IN THE CENTRAL WELL CAUSES EXPLOSIION OF THE LIQUID IN THE FRACTURE, WHICH IN TURN DETONATES THE EXPLOSIVE IN THE SURROUNDING WELLS. THIS CREATES A ZONE OF LARGE DRAINAGE AREA FOR PRODUCTION FROM THE FORMATION, OR INJECTION INTO IT. PREFERABLY THE NEIGHBORING WELLS SURROUNDING THE CENTRAL WELL ARE DRILLED BY DEVIATION OR SIDETRACKING FROM THE CENTRAL BORE.