FIELD: crude oil production. SUBSTANCE: housing of pump accommodates spirally rising system of hoses engaging with rotor made in form of prism with faces. These faces press in turn rubber hoses and displace liquid along riser in shutoff chamber of tubing and further along tubing to daylight area. Proposed pump makes it possible to reduce cost of oil production at any geologic and technical conditions. EFFECT: improved reliability, simple design. 3 dwg
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