PLANT FOR TREATMENT OF PRODUCING FORMATION Russian patent published in 1995 - IPC

FIELD: oil production. SUBSTANCE: electrode system includes negative electrode installed in injection well, and positive electrode, in the producing well. Negative electrode is made in form of whiskers-like bent spring-loaded members attached to carrying pipe by clamps. These members, at least three, are arranged in clamp uniformly and have contact sections at their ends. Positive electrode is made in form of pipe insulated from casing and tubing strings. Electrodes are supplied via rectifier from current source. EFFECT: higher efficiency in field development with use of perimeter water flooding. 1 dwg