METHOD OF DETERMINING BENCH PRESSURE IN INJECTION WELLS

摘要

FIELD: oil-and-gas production. ^ SUBSTANCE: proposed method comprises forcing working medium into bench and measuring bottom hole pressure. Bench exposure zone in well is isolated by packers from top and bottom. Hot has or overheated steam is used as working medium. Bench pressure is controlled at well mouth during working medium injection by measuring pressure in tubes communicated with interpacker space. Note here that, at a time, pressure at well mouth in tubing used for working medium injection. Control over working medium breakthrough is performed using the increase in difference between tubing pressure and bench pressure. ^ EFFECT: control over oil deposit development by injection wells and preventing working medium breakthrough. ^ 1 dwg