石油勘探与开发 >

2017 , Vol. 44 >Issue 6: 989 - 996

DOI: https://doi.org/10.11698/PED.2017.06.18

综合研究

地层模块尺度钻井液侵入模拟与储集层电阻率剖面特征

  • 范宜仁 ,
  • 巫振观 ,
  • 吴飞 ,
  • 吴俊晨 ,
  • 王磊
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  • 1. 中国石油大学（华东）地球科学与技术学院,山东青岛 266580;
    2. 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,山东青岛 266071;
    3. 中国石油大学（华东）CNPC测井重点实验室,山东青岛266580;
    4. 苏州纽迈分析仪器股份有限公司,江苏苏州 215163
范宜仁（1962-）,男,福建大田人,博士,中国石油大学（华东）教授,主要从事岩石物理实验,电测井理论、方法与应用及复杂油气层测井评价方法等研究。地址：山东省青岛市黄岛区长江西路66号,中国石油大学（华东）工科楼C501室,邮政编码：266580。E-mail：fanyiren@upc.edu.cn

收稿日期: 2017-06-15

  修回日期: 2017-10-25

  网络出版日期: 2017-11-24

基金资助

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）

收起

Simulation of mud invasion and analysis of resistivity profile in sandstone formation module

  • FAN Yiren ,
  • WU Zhenguan ,
  • WU Fei ,
  • WU Junchen ,
  • WANG Lei
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  • 1. School of Geosciences in China University of Petroleum, Qingdao 266580, China;
    2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;
    3. CNPC Key Laboratory for Well Logging, China University of Petroleum, Qingdao 266580, China;
    4. Suzhou Niumag Analytical Instrument Corporation, Suzhou 215163, China

Received date: 2017-06-15

  Revised date: 2017-10-25

  Online published: 2017-11-24

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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。图11表2参20

关键词： 钻井液侵入; 物理模拟; 数值模拟; 泥饼; 电阻率; 孔隙度; 渗透率

本文引用格式

范宜仁 , 巫振观 , 吴飞 , 吴俊晨 , 王磊 . 地层模块尺度钻井液侵入模拟与储集层电阻率剖面特征[J]. 石油勘探与开发, 2017 , 44(6) : 989 -996 . DOI: 10.11698/PED.2017.06.18

Abstract

Aiming at the dynamic invasion process of drilling fluid, the parameters of the physical model in laboratory were optimized based on numerical simulation and then a physical simulation system for mud invasion in undisturbed zone was developed. Then, the experiment of fresh water invasion in sandstone formation was conducted to measure the radial resistivity and mudcake parameters over time, and a mudcake porosity and permeability calculation model with the invasion time was proposed based on the measurement. Finally, the numerical simulation results were compared and calibrated with the physical simulation results to find out the regularity of drilling fluid invasion under formation conditions. The results show that the mudcake forms quickly and the porosity and permeability of the mudcake decrease sharply after the beginning of drilling fluid invasion, and the invasion process is mainly controlled by the mudcake after a certain period. The mudcake parameters model developed in this study can depict the changes of mudcake parameters during the invasion process. The characteristics of radial resistivity profile under mud invasion are affected by sandstone physical properties, mudcake parameters and formation water salinity.

Key words： mud invasion; physical modeling; numerical simulation; mudcake; resistivity; porosity; permeability

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