DEVELOPMENT OF OIL SEAM BY HORIZONTAL WELL EXTENSIONS

摘要

FIELD: oil-and-gas industry.SUBSTANCE: drilling of new wells or selection of drilled wells is executed. Intervals of productive bed are isolated. Pump is lowered in the well. Sections are separated by packers to extract well products from every section. Note here that at development of terrigenous or carbonate bed afflux profile id predefined in the well horizontal borehole. Sections with afflux profile are revealed that differ in specific oil yield by 20% and more. Packers are fitted at points of afflux profile variation. One pump is lowered on string at the centre of every section at maximum spacing between pumps in horizontal borehole not exceeding 200 m. Pumps are arranged on one string. Every next pump from horizontal borehole end to its front is selected provided that fluid yield makes at least the sum of fluid yields of previous pumps.EFFECT: decreased watering, higher oil yield.2 dwg, 1 ex