Dc指数随钻监测地层压力的应用分析

Application and Analysis of Monitoring Formation Pressure while Drilling with Dc Index

李红

LI Hong

中海油能源发展股份有限公司工程技术分公司, 天津 300452

Engineering Technology Branch of CNOOC Energy Development Co. LTD., Tianjin 300452, China

利用在线辅助决策系统的实时参数数据库及压力预测软件drillworks，结合综合录井方法及Dc指数法，跟踪了A井、B井和C井三口井的地层压力情况。在线辅助决策系统的软件系统，可显示钻井过程中的各种参数，对定性判断是否进入异常高压地层，起着很重要的作用。地层压力监测的结果显示，使用Dc指数法跟踪监测该地区地层压力，具有较高的精确性。

Using real-time parameter database of online assistant decision-making system and pressure prediction software drillworks, combined with the comprehensive logging method and Dc index method, the formation pressure of the wells A, B and C has been monitored. Various parameters in the process of drilling can be display throughonline assistant decision system, which plays a very important role for qualitative judgment of whether entering the abnormal high pressure formation. Formation pressure monitoring results indicated thatthe formation pressuremonitoring accuracy is high using Dc index method.

https://doi.org/10.3969/j.issn.1008-2336.2017.03.043