钻井液与完井液2023，Vol.40Issue(5)：611-616,6.DOI:10.12358/j.issn.1001-5620.2023.05.009
水基钻井液固相分布与控制——以苏里格东部气井为例
Study on Solids Distribution and Control in Water Based Drilling Fluids-Take Gas Wells in Western Sulige as Example
摘要
Abstract
This paper discusses the studies on factors affecting solids control of a drilling fluid,such as changes in the solids content of the drilling fluid during drilling,particle size distribution of the drilling fluid,sand content of the drilling fluid as well as the efficiency of the solids control equipment,taking the water based drilling fluids from two gas wells drilled in the eastern Sulige area as examples.The purpose of the studies is to push forward the precise control of field drilling fluids and hence further improve the safe and efficient drilling operation.The results of the studies show that during drilling from the Yanchang formation down to the Majiagou formation,the solids content of the drilling fluid increased from 4%-7%to 9%-13%,accompanied with an increase in mud density.The content of the solids with particle sizes＞109 μm(140 mesh)decreased from 63.05%to 35.5%,the content of the solids with particle sizes＜74 μm increased from 3.98%to 12.73%,and the solids content cannot be reduced to a lower level anymore.The sand content of the drilling fluid was controlled at less than 0.5%.Before and after mud system conversion,the highest efficiencies of solids removal of the sand trap and the shale shakers are reached,which are 43.31%-51.47%and 45.38%-53.98%,respectively.At the same time,the solids removal efficiency of the mud cleaner(desander and desilter)is at the lowest level,which is 5.31%-11.76%.These studies can be used as a reference to the efficient solids control and precise optimization of water based drilling fluids in field operation.关键词
水基钻井液/固相控制/固相分布Key words
Water based drilling fluid/Solids control/Solids distribution分类
能源科技引用本文复制引用
李明辉,王凯,王清臣..水基钻井液固相分布与控制——以苏里格东部气井为例[J].钻井液与完井液,2023,40(5):611-616,6.基金项目
川庆钻探工程有限公司科研项目"高浓度复合盐水钻井液固相含量快速测量方法及装置研究"(CQ2023B-Z-29-3) （CQ2023B-Z-29-3）
川庆钻探工程有限公司科研项目"长庆区域水基钻井液废弃物离心甩干处理技术研究"(CQ2023B-40-2-7). （CQ2023B-40-2-7）
