METHOD OF TREATMENT OF BOTTOMHOLE ZONE IN HORIZONTAL OR INCLINED WELLBORE Russian patent published in 2003 - IPC

FIELD: oil producing industry; applicable in treatment of bottomhole zones in horizontal or inclined wellbores. SUBSTANCE: method includes preliminary determination of pressure of fluid absorption by well, treatment of well with fluid ensuring absence of absorption and injection into producing interval of acid solution. Said treatment of well is accomplished by its washing with killing fluid whose density ensuring absence of absorption. Acid solution is supplied to producing interval with help of fluid with density ensuring absence of absorption. After injection of acid solution, zone is left to stand for process completion under pressure lower than absorption pressure up to moment of absorption starting. EFFECT: higher efficiency. 1 ex