METHOD OF INCREASE OF INCLINED WELL PRODUCTION RATE Russian patent published in 1997 - IPC

FIELD: oil and gas producing industry; drilling and operation of inclined (including horizontal) wells. SUBSTANCE: the offered method includes determination of direction of well drilling, determination of direction of perforation, performance of perforation. In so doing, prior to selection of direction of well drilling direction and value of maximum main horizontal stress in rock mass in the region of well drilling is determined. Direction of drilling is selected within ± 40 deg from the direction along and/or across the maximum main horizontal stress. Perforation is made in form of disk-shaped slot hollows. They are formed round the well in the plane square to the well in case of longitudinal drilling. In case of transverse drilling, they are made in form of slotted vertical hollows along the well upward and downward. EFFECT: higher efficiency. 7 cl, 6 dwg , 1 tbl