注CO_2气井井下落物钢丝打捞方法探讨

Discussion on the Method of Steel Wire Salvage for CO_2 Injection Gas Wells

针对海拉尔油田某注CO_2气井测试仪器落井问题,分析了仪器落井的原因并制定钢丝打捞方案。该方案采用高压密闭钢丝防喷装置,解决了注CO_2气井冻堵、井筒内沥青质卡阻和气井通井的问题,成功地打捞出落井仪器。实践证明该打捞方法能保证井下测试仪器完好,实现气井正常生产。

In order to solve the problem of instrument dropping in the CO2 injection gas wells in Hailaer fie ld, the reason was analyzed and the wire salvage plan was proposed. The high pressure sealed steel wire blowout preventer was adopted, the frozen blocking, the bituminous resistance and drifting problems were solved, and the instrument tool was successfully salvaged. The practice proved that the method could ensure the instrument in good condition, the gas well produced normally.