地层模块尺度钻井液侵入模拟与储集层电阻率剖面特征

发布时间：2018-05-01 09:31

本文选题：钻井液侵入 + 物理模拟　；参考：《石油勘探与开发》2017年06期

【摘要】：针对钻井液动态侵入,基于钻井液侵入数值模拟,确定实验室模型参数,研制钻井液侵入物理模拟系统,模拟原状地层条件下钻井液侵入规律。首先开展了砂岩地层钻井液侵入实验,测量岩石模块径向电阻率变化,获取不同侵入时刻泥饼,并提出了泥饼孔隙度和渗透率随侵入时间变化模型;然后将物理模拟与数值模拟结果进行对比标定,开展地层条件下钻井液侵入规律分析。结果表明:钻井液侵入开始后泥饼快速形成,其孔隙度和渗透率迅速降低,一定时间后钻井液侵入主要受泥饼控制,泥饼参数随侵入时间变化模型可以很好地反映泥饼参数在侵入过程中的变化,钻井液侵入情况下储集层电阻率剖面特征受地层岩石物性、泥饼参数及地层水矿化度等多种因素共同影响。
[Abstract]:In view of the dynamic invasion of drilling fluid, based on the numerical simulation of drilling fluid invasion, the laboratory model parameters are determined, and the drilling fluid invasion physical simulation system is developed to simulate the drilling fluid invasion law under the condition of undisturbed formation. Firstly, the drilling fluid intrusion experiment of sandstone formation is carried out, the radial resistivity change of rock module is measured, the mud cake is obtained at different invasion times, and the model of mud cake porosity and permeability changing with invasion time is put forward. Then the results of physical simulation and numerical simulation are compared and calibrated to analyze the intrusion law of drilling fluid under formation conditions. The results show that the mud cake is formed rapidly and the porosity and permeability decrease rapidly after the drilling fluid invasion, and the mud cake controls the mud cake invasion after a certain period of time. The variation model of mud cake parameters with invasion time can well reflect the change of mud cake parameters in the process of invasion. The characteristics of reservoir resistivity profile are affected by the physical properties of formation rocks under the condition of drilling fluid invasion. Mud cake parameters and formation water salinity and other factors together.
【作者单位】：中国石油大学(华东)地球科学与技术学院;海洋国家实验室海洋矿产资源评价与探测技术功能实验室;中国石油大学(华东)CNPC测井重点实验室;苏州纽迈分析仪器股份有限公司;
【基金】：国家自然科学基金项目(41474100,41674131,41574118) 中央高校基本科研业务费专项资金资助项目(17CX06041,15CX06008A) 中国石油大学(华东)研究生创新工程(YCX2017004)
【分类号】：TE151;TE254

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