气体钻井井内压力计算模型与标准化

Borehole Pressure Computational Model and Standardization in Air Drilling

虽然国内外学者对循环系统内压耗计算进行了大量研究,并给出了相关的公式,但均基于一定假设条件,且为英制或工程单位,不便于深入研究和推广采用。对井内压力计算模型重新进行了推导,并使用国际单位制,得到的气体钻井井筒压力计算模型得到了实例计算验证,为气体钻井流场分布、工艺设计及操作参数确定等方面的深入研究提供了理论基础。

Although a lot of equations regarding the pressure computation of air drilling are available,they are nonetheless based on a certain assumption,and the units used are generally British System or Engineering Unit,which are not convenient for use.Using SI Unit,the pressure computation in air drilling is re-established and presented with case histories,providing a theoretical basis for studies on the flow field distribution,technical design and operational parameter selection in air drilling calculation