FIELD: oil production industry. SUBSTANCE: this ensures oil recovery from horizontal wells with low bed pressure and low level of liquid in well. Device has pumping-out unit which can be lowered into horizontal part of well. Body of device is made of flexible material and is provided with rope for its lowering into well. Body is provided with non-return valve, settler pipe and pusher pipe. Pumping-out unit is housed in body of outer diameter close to diameter of well. Length of body is equal to length of horizontal part of well and it can float in liquid which fills horizontal part of well. EFFECT: high efficiency. 2 cl, 2 dwg
Authors
Dates
1998-01-20—Published
1995-12-01—Filed