| 摘要 |
FIELD: oil production industry. SUBSTANCE: this can be used for treatment of bottom-hole zone of producing well or well converted from producing into injection. According to method, increased output of well is achieved by pumping distillate into well at bottom-hole pressure 10-20% lower than counter-pressure at bottom-hole at opening. Then effected is technological delay of distillate until pressure at well head is reduced down to atmospheric. After that, pumped into well is 0.5-5% solution of non-ionic surface-active agents in accompanying Devonian water with density of 1.06-1.09 g/cm3. Distillate and solution of surface-active agents are forced into oil bed until pressure at bottom-hole of well is not higher than by 30% of counter-pressure at bottom-hole of well at opening. Flow rate of pumping solution of surface-active agent is increased until pumping in pressure is stabilized. When pressure at down-hole of well exceeds counter-pressure at bottom-hole of well at opening by more than 30%, bottom-hole pressure is reduced. Then additional perforation is performed in same interval of productive bed under layer of surface-active agent. Again forced into oil bed is solution of surface-active agent and pumping in flow rate is increased until pressure is stabilized. EFFECT: high efficiency. 1 cl |
