redrilled well

Regarding to these demerits,indoor research of calcium chloride weighting drilling fluid is done,and this paper introduces its field application in Weidong 6 well.

针对含膨润土相加重钻井液易对油气层产生损害，加重密度受到限制，高密度条件下，流变性调整困难等缺点，我们开展了氯化钙加重钻井液的室内研究，并在威东六井的现场进行了初步应用，本文将介绍该体系的室内试验与现场应用情况。

t is necessary to develop a new system of weighted drilling fluid with good properties for deep and ultra-deep drilling.

为了开发深部的油气藏，在钻井作业中需要使用性能更为优良的加重钻井液。