FIELD: oil and gas industry. SUBSTANCE: reliable and versatile operation both at low and high gas pressure in inter-tube space of well is achieved due to washing of well with required solutions through pump-compressor tube string using device having housing 1 connected at both ends with pump-compressor tubes with radial through-holes 3 which are closed by bush 4 mounted on threaded non-tight point 5 outside of housing 1. EFFECT: simple design, high efficiency. 1 dwg
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Authors
Dates
1997-03-10—Published
1993-06-25—Filed