泥浆滤液防塌性能矿场评价方法研究  

Study of The Method to Evaluate Anti-Sag Property of Mud filtrate through Logs

作　　者：刘向君 罗平亚 

出　　处：《西南石油学院学报》1996年第2期42-47,共6页Journal of Southwest Petroleum Institute

摘　　要：活度平衡理论很早就被提出并应用在泥浆滤液防塌性能的研究和设计中，但长期以来由于无法取得泥页岩地层水样，致使泥页岩地层水的离子活度难以通过室内实验测定，也阻碍了该理论在泥浆设计中的应用。本文对地球物理测井在这一领域的应用进行了理论研究，结果表明充分认识和利用现有测井资料，结合泥质砂岩地层的“双水模型”，可以确定泥浆滤液与地层水溶液的离子活度比及地层水溶液的离子活度，从而可对泥浆滤液防塌性能（或抑制泥页岩水化的能力）进行调整。Activity equilibrium theory was presented long ago and applied to evaluate and design of anti-sag property of mud filtrate. However, since it is impossible to take water sample from shale formation, so far we haven't found a way to determine the ionic activity of water solution in shale formation through laboratory experiment. Therefore, its application in shale formation had always been restricted. In this paper, a theoretical research is made on the application of geophysical logging in this domain. The results show that it is possible to determine the ratio of mud filtrate to the ionic activity of formation water solution and the iomic activity by making fukk use of the present log data combining with the dual water model of shaly sand formation. Accordingly, anti-sag property of mud filtrate can be adjusted, or the bydration of mudrock can bi conteoled.

关 键 词：地层水 防止地层损害 钻井液滤液 防塌 页岩控制 

分 类 号：TE258[石油与天然气工程—油气井工程]