空气钻井最小注气量的计算及其影响参数  

Calculation and It's Effect Parameters of Minimum Gas Volume of Air Drieeing

作　　者：李士斌[1] 陈晓华[1] 唐玉龙[2] 赵春贺 

机构地区：[1]大庆石油学院,大庆163318 [2]中国石油大学(北京),北京100000 [3]中国石油集团海洋工程有限公司海工事业部,北京100000

出　　处：《科学技术与工程》2009年第22期6634-6637,6646,共5页Science Technology and Engineering

摘　　要：空气钻井广泛应用的同时也出现了许多使生产无法顺利进行的情况,包括气体携屑困难、井眼堵塞、井壁失稳、井下爆炸等。解决这些问题的关键技术之一就是最小注气量的确定。在Guo模型的基础上确定了计算最小注气量的计算公式,分析了环空气体的流速和环空压力,并对修正模型与实际现场比较出现的偏差进行研究分析,完善了空气钻井理论,对现场实践具有指导意义。As air drilling is applying extensively , many difficult conditions has arisen, including the difficulty of the gas taking crumbs, the jam of the borehole, the buckling of the sidewall, the blast of the downhole and so on. One of the keys to solve the questions is the definition of the minimum gas volume. Based on GUO model, the formula is definited to computing the minimum gas volume and analyzed the velocity in annular and the annular pressure. In addition, the deviation between the modified model and the scene deviation is researched. It improves the theory of the air drilling and gives a conducting meaning.

关 键 词：空气钻井 注气量 环空返速 环空压力 影响因素 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]