地层模块尺度下的新型钻井液侵入物理模拟系统

发布时间：2018-06-18 22:20

本文选题：钻井液侵入 + 物理模拟　；参考：《石油勘探与开发》2017年01期

【摘要】：在攻克大尺寸样品模块饱和加压、侵入室设计、钻井液侵入装置密封保压和钻井液侵入全过程动态监测等关键技术难题的基础上,设计并制造了地层模块尺度下的钻井液侵入多功能物理模拟系统,总结了钻井液侵入过程中砂岩地层模块的电阻率、压力和泥饼参数的变化规律。介绍了该系统的设计思路、组成和各部分的功能,实施了砂岩地层模块钻井液侵入实验,结果表明:盐水钻井液侵入过程中,地层模块径向电阻率向远离井筒方向依次开始减小;侵入初期泥饼逐渐形成,其厚度增加而孔隙度、渗透性降低,地层模块径向压力梯度迅速降低,侵入中后期泥饼性质、砂岩模块径向压力梯度趋于稳定。设计的系统仿真度高、利用率高、可操作性强,可用于揭示砂岩储集层钻井液侵入机理、分析钻井液侵入特征、完善测井响应钻井液侵入校正方法等。
[Abstract]:On the basis of solving the key technical problems, such as saturation pressurization of large size sample module, design of intrusion chamber, sealing and keeping pressure of drilling fluid invasion device and dynamic monitoring of drilling fluid intrusion during the whole process, A multi-functional physical simulation system of drilling fluid intrusion in the scale of formation module is designed and manufactured. The variation of resistivity, pressure and mud cake parameters of sandstone formation module during drilling fluid invasion is summarized. The design idea, composition and function of each part of the system are introduced, and the experiment of drilling fluid intrusion of sandstone formation module is carried out. The results show that: in the process of salt water drilling fluid invasion, The radial resistivity of formation module began to decrease in turn to the direction far away from wellbore, the mud cake gradually formed in the early period of invasion, its thickness increased, porosity and permeability decreased, the radial pressure gradient of formation module decreased rapidly, and the mud cake property of middle and late period of invasion decreased rapidly. The radial pressure gradient of sandstone module tends to be stable. The designed system has the advantages of high imitation, high utilization ratio and high maneuverability. It can be used to reveal the invasion mechanism of sandstone reservoir drilling fluid, analyze the characteristics of drilling fluid intrusion, and improve the logging response drilling fluid intrusion correction method.
【作者单位】：中国石油大学(华东)地球科学与技术学院;中国石油大学CNPC测井重点实验室;苏州纽迈分析仪器股份有限公司;中国石油勘探开发研究院测井与遥感技术研究所;
【基金】：国家科技重大专项(2011ZX05020-008) 国家自然科学基金(41174099) 中国石油天然气集团公司科学研究与技术开发项目(2011D-4101)
【分类号】：TE254

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