FIELD: oil-producing industry. SUBSTANCE: device has a hydrodynamic pump operating on working fluid feed and differential control valve operating on definite pressure differential formed in zone of supply of working fluid and in under-packer zone. In this case, in course of device operation, hydrodynamic shocks, formed in under-packer zone, efficiently act on bottom-hole formation zone. The process of well treatment is automatically discontinued upon recovery of its hydrodynamic characteristics. EFFECT: improved design. 5 cl, 3 dwg
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Authors
Dates
1997-12-10—Published
1994-11-01—Filed