Well Control Technology of High Temperature and High Pressure with Different Well Shapes
(0) Well control safe is the prerequisite of safety drilling, especially for high temperature and high pressure horizontal wells.However, there are few papers about well control of horizontal well drilling, which mostly learn from vertical well control process.By means of analysis of the theory of gas kick, we conclude that underbalance, the bottom hole pressure is less than the formation pressure is the main means of gas invasion.During balance period, the gas also intrudes into wellbore through the way of direct invasion, diffusion invasion and replacement invasion, but the amount of gas kick is less, so the risk of well control is small.This paper also anlyses the kick tolerance, the kick tolerance decreases with the increasing of drilling fluid density when the formation pressure and drilling equipment is constant.
well control high temperature and high pressure kick tolerance underbalance
Yanjun Li Xiangnan He Xiaowei Feng Yaqi Zhang Ling Wu Xiang fangLi Kaiwen Huang Yi Huang Limin Luo
Drilling and Completion Department of CNOOC Zhanjiang Limited, China, 524057 China University of Petroleum, China, 102249
国际会议
杭州
英文
860-866
2013-01-18（万方平台首次上网日期，不代表论文的发表时间）