论文部分内容阅读
在密西西比州Laural周围地区所有强膨润土页岩中钻进时,都遇到井眼不规则和“锥进”(ConiDg)问题.钻进深度或其附近的盐脉也向经营者和钻井液公司提出如何保持合格的井眼尺寸和提高钻速的挑战.也曾使用过抑制性钻井液以及用控制泵量、临界速度和钻井液性能使钻井液产生层流的方法作过处理.尽管这些处理方法使情况有所改善,但是井眼问题仍然妨碍裸眼评价、正确的层间頤离和成功地完井.在许多情况下,井眼被极度冲刷已超过了测量井径的能力,且需要大量的水泥.
Wells encountered irregularities and “ConiDg” problems when drilling in all bentonite shales in the area around Laural, Mississippi. Salinities at or near the drilling depth were also reported to operators and drilling Liquid companies challenged how to maintain wellbore dimensions and increase penetration rates, and also used inhibitory drilling fluids and methods to create laminar flow in drilling fluids with controlled pump rates, critical velocities and drilling fluid properties. These treatments improved the situation, but the borehole problems still hinder the unaided eye evaluation, the correct inter-layer separation, and the successful completion of the well.In many cases, the wellbore has been washed extensively beyond the ability to measure the caliper Requires a lot of cement.