摘要
陆地上的井控方法和压井模型目前已经比较完善,但在深水井控过程中,特殊的地层条件和长节流管线的存在,压井过程中时常因套管鞋处的地层破裂造成压井过程的失败。由于特殊的管路条件和温度环境,深水压井过程中的立压和套压的变化也不同于陆地,气体进入节流管线后套压迅速增大,这给井控的操作带来了较大的困难。在考虑了节流管线摩阻、气体的压缩系数及温度等参数变化对套压、立压的影响的基础上,以常规陆地司钻法为基础,介绍了深水压井排量的优化选择方法,通过计算机模拟给出了整个压井过程中的立压和套压变化曲线。这种改进的“深水司钻法”符合深水井控条件,对现场压井施工具有指导意义。
The methods and simulations of onshore well control are perfected, but the variations of CP and SPP and selections of kill rate are different from land during a well control due to special geologic condition and long choke line in deep water. On the basis of driller’s method, the optimal kill rate was selected and the influence of choke line friction and compressibility coefficient and temperature variation of gas on CP and SPP was considered in this paper. The data calculated by computer and simulation curves are indicated that this update “deep water” driller’s method can adapt to well control condition in deep water.
出处
《钻采工艺》
CAS
北大核心
2007年第3期23-26,共4页
Drilling & Production Technology
关键词
深水井控
气体溢流
司钻法压井
计算机模拟
deep water well control, gas overfall, kill well, driller’s method, computer simulation
