探矿工程-岩土钻掘工程2016，Vol.43Issue(10)：193-196,4.
固结钻井液对湘西北页岩气储层的护壁机理研究
Preliminary Research on Protective Performance of a New Drilling Fluid for Shale Gas Reservoir in Northwest Hu-nan
摘要
Abstract
This paper presents a kind of liquid ionic consolidation agent, and this agent can effectively improve mechanical strength of shale gas wells.Through laboratory experiments, the basic properties of the drilling fluid treated with the liquidi-onic consolidation agent and inhibition of this kind of drilling fluid on the expansion of carbonaceous shale and effects of this kind of drilling fluid on mechanical strength ofcarbonaceous shale were uncovered.The drilling fluid's filtration decreased and then in creased with the increase of the concentration of the liquid ionic consolidation agent.The expansion rate of the compressed core in the drilling fluid was lower than that inclear water.But with the increaseof the liquid ionic consolidation agent, the expansion rate of the compressed core in the drilling fluid was higher and higher.The shear strength of the shear specimens treated with the drilling fluid was higher than that treated with water.With the increase of the liquid ionic consol-idation agent, the shear strength of shear specimens increased and then decreased, and the uniaxial compressive strength of the samples were increased.The results demonstrate that liquid ionic consolidation agent in suitable content range helps to enhance the ability of drilling fluid to maintain the stability of borehole wall.关键词
页岩气/钻井液/井壁稳定性/岩心膨胀率/湘西北Key words
shale gas/drilling fluid/borehole stability/expansion rate of the core/Northwest Hunan分类
地质学引用本文复制引用
田明锦,孙平贺,曹函,武驿铎,张绍和..固结钻井液对湘西北页岩气储层的护壁机理研究[J].探矿工程-岩土钻掘工程,2016,43(10):193-196,4.基金项目
国家自然科学基金“含煤层气储层物性与压裂液微观特性动态耦合作用机理研究”（编号41302124）、“细观和宏观下离子稳定剂对煤层气钻孔的化学与力学护壁机理研究”（编号41602372）；湖南省自然科学基金“Hunan Provincial Natural Science Foundation of China”（编号13JJ6002）；国土资源部复杂条件钻采技术重点实验室开放基金项目“页岩气随钻原位探测及储层保护钻井液技术研究” （）
