| 摘要 |
FIELD: oil and gas extractive industry. ^ SUBSTANCE: device has differential bar pump lowered on tubing column, and packer on tail piece. Tail piece is placed in area of oil-water contact of watered oil bed below pump. Body of differential bar pump consists of two stepped cylinders and one doubled hollow plunger with suck-in and force valves, forming two separate chambers and having separate hydraulic channels. These channels connect differential bar pump to above-packer and below-packer areas of watered oil bed of well. Relation of extracted volumes of, respectively, oil and water from these areas, is determined by analytical expression. ^ EFFECT: higher effectiveness. ^ 2 cl, 1 dwg |
