摘要
该文在ＤＳＴ中途测试所解释的参数的基础上，提出了研究油井损害半径ｒｓ和损害后渗透率Ｋｓ的新方法，并利用建立的数学模型对临南油田４口井的ｒｓ和Ｋｓ进行了计算。通过与Ｍｃｋｌｉｎｌｅｙ曲线拟合方法所解释的结果相对比，表明新方法具有更高的准确性。根据计算结果分析了临南油田钻井过程中的主要损害因素，并提出了临南油田钻井完井液的改进措施。
Based upon the interpretation data from DST, a new method of studying well-damaged radius rs and post damage permeability Ks is brought up. Ks and rs from four wells in Linan oil field were calculated with established numerical model. Through comparison between the results from the new method and those from the Mcklinley match curve , the new method is shown to be more accurate. The principal damage factors during well drilling in Linan oil field are analyzed from the calculation results,and measures for improving well completion fluids in Linan oil field are suggested.
关键词
DST测试
油井损害半径
渗透率
油层保护
reservoir protection
skin factor
invaded zone
permeability
well completion fluid
