砂桥卡钻钻井事故安全评价系统  

Safety Evaluation System for Sand Bridge Sticking Accident

作　　者：罗刚[1,2] 孙萌[3] 方朝刚[2] 马海峰[4] 

机构地区：[1]长江大学机械工程学院 [2]江汉机械研究所 [3]长江大学经济学院 [4]西南石油大学机电工程学院

出　　处：《石油机械》2013年第5期7-10,14,共5页China Petroleum Machinery

基　　金：中国石油天然气集团公司科学技术开发项目"陆上钻井事故模拟仿真及安全评价技术研究"(06B7101)

摘　　要：卡钻事故是钻井作业中最为常见也极易发生的井下事故,准确及时地判断卡钻事故类型对保障钻井作业的安全高效具有重要意义。为此,在调研国内外资料的基础上提出了造成砂桥卡钻事故的各种因素,利用层次分析法建立了砂桥卡钻事故安全评价体系,随后采用模糊数学理论中的指标隶属度刻画方法,建立了砂桥卡钻事故各种相关因素量化指标的隶属度函数,最后利用VC程序开发了砂桥卡钻事故安全评价系统。现场试验结果表明,该系统可准确计算出砂桥卡钻事故风险概率,并提供事故处理方案,对预防和处理砂桥卡钻事故具有指导作用。Sticking is the most common downhole accident which is easiest to take place in the process of drill- ing. Exact and timely judgment of sticking type is of great importance to guaranteeing the safe and high - efficiency drilling operation. ＇Fherefore, the factors which cause sand bridging were summarized on the basis of investigating domestic and foreign information concerned. The analytic hierarchy process （AHP） was used to establish the stick- ing accident safety evaluation system. Then, the index and hierarchy characterization method in the fuzzy math- ematic theory was applied to establish the membership function of the quantitative indexes of various relevant factors in sand bridge sticking. Finally, the VC program was applied to develop the sand bridge sticking safety evaluation system. The field test shows that the system can precisely calculate the risk probability of sand bridging, providing the solution to the accident. The study can serve as a guide to prevention and handling of sand bridging.

关 键 词：砂桥 卡钻 安全评价 层次分析法 模糊隶属度 井下事故 

分 类 号：TE28[石油与天然气工程—油气井工程]