摘要
本文针对韩城地区低渗透率的11#煤层对钻井液的要求,运用正交试验的方法对钻井液配方进行设计。通过对正交试验配方进行性能测试,得到钻井液最优加量。根据正交试验得出的钻井液配方配制的钻井液比重、粘度、切力、pH值等性能基本符合水平钻井的需要,能很好的起到保护井壁、减少钻井工艺对煤层渗透率造成损害的作用。
In cognizance of the requirements of the drilling fluid using for 11^# coal seam in Hancheng area whose permeability is low, this paper employed orthogonal experiment to design the formulation of drilling flu- id. Performance test for the formula of the orthogonal experiment is conducted, and the optimum dosage of the drilling fluid is gain. The density, viscosity, sheafing force, pH of the drilling fluid is substantially in line with the requirement of horizontal drilling based on the formula analyzed by the orthogonal experiment. This drilling fluid not only could protect the wall of the borehole, but also could reduce the damage to the perme- ability of the coal seam caused by the drilling technology.
出处
《中国煤层气》
2009年第2期38-40,43,共4页
China Coalbed Methane
关键词
钻井液
性能
正交试验
Drilling fluid
performance
orthogonal experiment
