B208井封串工艺技术

The Technology of Blocking up the Channeling in the Well B208.

宝浪油田宝中区块油藏类型为含气顶的环状凝析油气藏 ,地温梯度高 ,油藏埋藏深、压力高 (压力梯度为 1.0 7MPa/ 10 0m左右 ) ,地层微裂缝发育。在此情况下 ,通过深入进行串漏机理分析 ,有针对性地优选封串工艺技术 ,优选油井封串水泥 ,优选隔离液 ,优化工艺设计与运行 ,在B2 0 8井封串一次成功 。

In the Baozhong zone of the Baolang oilfield,the type of the reservoir is an annular condensate with the gas up to the top,the underground temperature is high,the hidden reservoir is deep,and the pressure of the reservoir is great (the gradient of the pressure is 1.07 MPa/100 m),there exists minute fissures in the zone.In this case,the authors thoroughly analyzed the mechanism of the channeling,optimized the technology of blocking up it with a clear aim,and chose the concrete and the segregating liquid carefully,optimized the technical design and the working on plan.Finally we made a success in the well B208,and offered a successful working over experience which could be referred in the complicated wells.