确定气井湍流系数和湍流表皮系数的新方法

NewMethod of Determining Turbulence Factor and Turbulence Skin Factor

陈元千,董宁宇

Chen Yuanqian, Dong Ningyu

中国石油勘探开发研究院

Research Institute of Petroleum Exploration and Development , CNPC, Beijing 100083 P. R. China

在气体高速流动条件下,湍流是普遍存在的现象,而且流速愈高,则井底附近地带的湍流区愈大。湍流不仅增加了流动阻力和表皮系数,而且降低了气井的产能。基于文献[ 2 ]的研究成果,提出了确定湍流系数和湍流表皮系数的新方法。
 

Under the condition of high speed flow , the turbulence is a kind of general existence phenomena. And the flow speed is more high , the turbulence flow area is greater in near zone of bottomhole. The turbulence not only increases flow resistence and skin factor , but also decreases productivity of gas well. This paper proposes a new method of determining turbulence factor and turbulence skin factor.