石油钻采工艺2012，Vol.34Issue(4)：12-15,4.
气体循环钻井井口气量控制技术
Wellhead gas volume control techniques in gas circulation drilling
摘要
Abstract
Based on the theory of gas transient flow, a set of wellhead gas volume control theoretical models in gas circulation drilling are set up in combination with the formation porous flow and gas circulation drilling technique principles. According to the basic laws with which the gas flow should comply, various movement properties and dynamic pressure equalization relations of borehole fluid are illustrated, and the gas volume control method are comprehensively explained when taking gas circulation drilling technology to penetrate a gas zone. The Mac.Cormack method is adopted to solve the theoretical models, and numerical simulation is used to calculate and analyze the process of penetrating the gas zone. The results of study have a certain practical significance for the descriptions of dynamic process of penetrating gas zone using gas circulation drilling and the onsite application.关键词
气体循环钻井/瞬变流/地层渗流/气量控制/数值模拟Key words
gas circulation drilling/ transient flow/ formation porous flow/ gas volume control/ numerical simulation分类
能源科技引用本文复制引用
杨顺吉,柳贡慧,李军,徐自强,刘小静..气体循环钻井井口气量控制技术[J].石油钻采工艺,2012,34(4):12-15,4.基金项目
国家自然科学基金"气体循环钻井动态流动理论及携岩能力研究"(编号:50974021) （编号:50974021）
国家重点基础研究发展计划(973计划)"深井复杂地层钻井压力系统模型与规律"(编号:2010CB226704)资助. （973计划）
