FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to production of hydrocarbons. Reliquefaction pump is intended for reliquefaction of wells and comprises fluid end pump adapted for pumping the fluid from borehole. Besides, said pump comprises hydraulic pump adapted for driving of the fluid end pump. Hydraulic pump comprises first internal pump chamber and first pump assembly arranged therein. First pump assembly comprises piston with first and second ends, through bore extending between said first and second ends. Besides, first pump assembly comprises first inclined disc with flat end surface aligned with piston second end and groove extending in axis through first inclined disc. First inclined disc can turn about central axis relative to jacket to create axial piston reciprocation and to make piston through bore communicate with the groove.
EFFECT: higher yield.
32 cl, 22 dwg
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