评价钻井液完井液对裂缝性地层封堵效果的新方法

泥页岩比表面积测定方法，泥页岩水化膨胀测定方法、钻井液泥饼压缩性评价方法等现有诸多评价方法，都是针对泥页岩地层垮塌进行的研究，而对如何稳定破碎性地层及裂缝发育地层，目前还没有一种可行性的评价的方法。探讨了利用38742型泥浆失水仪来评价钻井液、完井液的封堵效果，实验结果表明：该法是现场评价钻井液、完井液封堵的评价方法。

A New Probe to Evaluate Sealing Effectiveness of Drilling Fluids and Completion Fluids in Fractured Formation

Current borehole evaluation methods such as mud shale specific area measuring method, mud shale hydration swelling measuring method, drilling fluid cake compressibility evaluation method and so on are suitable for shale formation collapse. Whereas there is no a feasible evaluation method on how to stabilize fracture formation and crack strata. Plugging effects of drilling fluid and completion fluid on fractured formation have been evaluated by mud filter press 387-42 and results have show that it is a effective method for evaluating drilling fluid and completion fluid in the oilfield.