新疆油田钻井井喷风险分级及井控管理

为了减少新疆油田钻井溢流井喷事件,杜绝井喷失控事故,在统计新疆油田影响钻井井喷风险的地质环境因素的基础上,利用模糊数学理论建立了油田基于地质环境因素的钻井井喷风险分级模型,对各个区块的钻井井喷风险程度进行了分级,结果表明南缘山前构造勘探开发区块及克拉美丽气田的钻井井控风险值最高。建议对新疆油田钻井井控进行分级管理,针对不同的钻井井喷风险等级,制定了针对性的井控对策,建议在井控设计时考虑钻井井喷风险分级设计。

Risk ranking and wellcontrol measures of drilling blowout in Xinjiang Oilfield

In order to reduce the chance of wellflow and prevent well blowout accident that gets out of control in Xinjiang oilfield, considering the statistical data of the factors influencing the drilling blowout, a model of evalua- ting drilling blowout risk to Xinjiang oilfield drilling and geological environment based on fuzzy mathematics was es- tablished. The drilling blowout risk of each oilfield area in Xinjiang oilfield area was ranked, and the result indica- ted that both the nanyuan piedmont tectonic exploratory development area and the kelameili gas field are the highest drilling blowout risk areas. It was suggested that the well control ranking management should be implemented in the Xinjiang Oilfield. Various well control measures should be made according to different drilling blowout risk, and the risk ranking of drilling blowout should be included in well control design.