THE RESEARCH AND APPLICATION OF SAFE CONTROLLED DRILLING IN SALT LAYER

摘要：

The salt layer can make borehole close in the effect of creep, which often leads to tight hole and pipe sticking. The deviation angle has an important impact on creep rate when drilling directional wells in the salt layer. This paper analyzed the creep property of the salt layers of the given oilfield, the creep constitutive model is given, the creep parameters is given by the mud density and the caliper log data. Consider the geologic condition of the salt layer, Do the numerical calculation of the salt layer creep by Lagrange method, the safe mud density drilling the salt lay ers is decided, at the same time, the effect of the deviation angle to the drilling in the salt layer is analyzed, The conclusion is that on the condition of the major principal stress is overburden pressure, drilling on the orientation of the maximal earth stress, the creep rate increases with the increasing of the deviation angle, the safe mud density also increased, the high deviation angle directional well in salt layers is much more risky. The conclude makes great contribution to the optimizing deviation angle , designing well track and reducing the drilling troubles when drilling directional wells in the salt layer.

作者: Li Zhonghui Lou Yishan Liu Xinfeng Xing Jiguo Huang Wanlong

作者单位: Petroleum Engineering College,Yangtz University Jingzhou,Hubei,China China Oilfield Services Limited Tianjin,China

会议类型: 国际会议

会议名称: The 3rd World Conference on Safety of Oil and Gas Industry(第三届世界石油天然气工业安全会议 WCOGI 2010)

会议地点: 北京

会议语种:英文

页码: 632-635

在线出版日期: 2010-09-27（万方平台首次上网日期，不代表论文的发表时间）