石油钻采工艺2012，Vol.34Issue(2)：29-32,4.
川东北钻井复杂情况风险分析方法研究
Risk analysis method for drilling trouble in Northeast Sichuan
摘要
Abstract
Northeast Sichuan is a representative gas field with high pressure, high production, and high hydrogen sulfide in China, and the complex geological structure and unpredictive drilling geologic environment bring uncertainty and risk for drilling design and operation. Based on the analysis of drilling trouble statistics, according to statistical decision method, the analysis model for drilling risk is established, and the drilling risk in Northeast Sichuan is analyzed. The results show that the accuracy of circulation loss model is 90.5238%; that of overflow model is 99.9855%; that of borehole collapse model is 99.802%; that of bit freezing model is 83.33%; and that of drill string failure model is 90%. Therefore, the analysis method for drilling risk is reliable, and meets with safety requirement of the drilling site, and it is significant theoretically and practically.关键词
川东北/高含硫化氢/钻井复杂情况/风险等级/安全Key words
Northeast Sichuan/ high hydrogen sulfide content/ drilling trouble/ risk grade/ safety分类
能源科技引用本文复制引用
王萍,李文飞,张锐,王光磊,张运成..川东北钻井复杂情况风险分析方法研究[J].石油钻采工艺,2012,34(2):29-32,4.基金项目
国家科技重大专项“大型油气田及煤层气开发”(编号:201 1ZX05022-001) （编号:201 1ZX05022-001）
国家科技支撑计划项目“三高气田钻完井安全技术体系研究与应用”(编号:2008BAB37B06). （编号:2008BAB37B06）
