СПОСОБ ОБЕСПЕЧЕНИЯ ВЫНОСА МЕХАНИЧЕСКИХ ПРИМЕСЕЙ СЗАБОЯ ГОРИЗОНТАЛЬНОЙ СКВАЖИНЫ

摘要

FIELD: oil and gas industry, particularly operation of horizontal and gently sloping oil and gas wells, namely methods or apparatus for cleaning boreholes or wells. ^ SUBSTANCE: method involves increasing fluid velocity at the end of horizontal bore by arranging perforation intervals or filters to provide fluid velocity in last perforation section or in filter enough for effective impurity and water carryover from well bottom. Distance between perforation sections or between filters at the beginning of horizontal bore is to be greater than that between perforation sections or between filters at the end of horizontal bore. Perforation density at the beginning of horizontal bore is to be less than that at the bore end. ^ EFFECT: increased output from horizontal bore end, which accelerates fluid velocity and facilitates mechanical impurity and water carryover from the whole well bore. ^ 1 ex, 3 dwg