| 摘要 |
FIELD: mining industry; applicable in construction of producing wells, including horizontal ones. SUBSTANCE: method includes performance of pressure test of production string at pressure authorized for given design during completion of producing well construction. If pressure drop rate exceeds the preset value, production string is considered leaky. For express determination of leaky intervals, cyclic repressive action is carried out by building-up the pressure exceeding the stabilization value but not in excess of permissible limits of pressure test values, with determination of background temperature distribution over wellbore. Each cycle of building-up pressure is altered with its release to O MPa. After repressing, current check of temperature is carried out. Production string leakage is detected by positive temperature anomalies relative to background temperature field. EFFECT: rapid detection of leaky intervals of production string. 2 cl, 2 dwg |
