气体欠平衡钻井的特点分析与研究  

Research on Characteristics of the Gas Underbalance Pressure Drilling

作　　者：艾二鑫[1] 陈庆[1] 石陕龙 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]长庆油田安全环保监督部第五监督站,陕西定边718600

出　　处：《辽宁化工》2014年第3期333-335,339,共4页Liaoning Chemical Industry

摘　　要：气体欠平衡钻井技术是使用空气、氮气、天然气等气体作为循环介质,所以节约了较多的钻井材料费用。气体钻井不光可以减小油层污染,而且还可以缩短钻井周期,延长钻具寿命。随着钻井数量的增加,面临的如井壁坍塌、井下爆炸、地层出水等诸多的问题日益严重。我们需要利用好气体欠平衡钻井技术优点的同时,分析缺点,预防和控制好不利因素。The gas underbalaneed drilling technology is to use air, nitrogen, natural gas and other gases as circulating medium, so it can save more drilling cost. The gas drilling not only can reduce the oil pollution, but also can shorten the drilling cycle and extend drilling tools＇ life. With the increasing of drilling wells, borehole collapse, underground explosion, formation water and many other issues become increasingly serious. So shortcomings of the gas underbalanced drilling technology need be analyzed to prevent and control the negative factors.

关 键 词：气体欠平衡钻井 井壁稳定 井斜 分析 

分 类 号：TE22[石油与天然气工程—油气井工程]