空气钻井中气体体积流量的计算——两种不同体积流量准则的比较  

Calculation of Gas Volumetric Flow Rate in Air Drilling——Comparison of two different volumetric flow rate criteria.

作　　者：李怀科[1] 鄢捷年[1] 李志勇[1] 李胜[1] 

机构地区：[1]中国石油大学石油工程教育部重点实验室

出　　处：《钻井液与完井液》2008年第3期1-3,共3页Drilling Fluid & Completion Fluid

基　　金：教育部"长江学者和创新团队发展计划(批准号:IRT0411)"资助。

摘　　要：适宜的气体流量在气体钻井施工中至关重要,关系到钻井的成功与否。介绍了在空气钻井施工中确定气体最小体积流量的最小动能准则和最小流速准则以及应用其计算直井、斜直井和定向井的气体最小体积流量的方法,并通过实例说明了整个计算过程。结果表明,由这2种体积流量准则计算的气体体积流量误差较小,可满足现场施工要求。Air drilling has some advantages in enhancing ROP,minimizing downhole troubles,extending the service life of drill bits and improving the formation evaluation and so on.This paper discussed the minimum volumetric flow rate of air in air drilling and two design criteria,and the application of the calculation results in vertical well and directional well drilling.Examples of calculation were given in this paper.It was suggested that the calculation errors from the 2 volumetric flow rate calculation criteria were comparatively small,and were able to satisfy the field operation requirement.

关 键 词：空气钻井 体积流量准则 最小气体体积流量 计算方法 

分 类 号：TE252.7[石油与天然气工程—油气井工程] TE249.7