基于大尺寸地层模型的砂岩储层油基钻井液侵入模拟

doi:10.7623/syxb201911011

石油学报 ›› 2019, Vol. 40 ›› Issue (11): 1407-1414.DOI: 10.7623/syxb201911011

基于大尺寸地层模型的砂岩储层油基钻井液侵入模拟

吴俊晨^1,2,3, 范宜仁^1,2,3, 曹军涛⁴, 范卓颖⁵, 王小龙^1,2,3, 吴飞⁶

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. 中国石油塔里木油田公司勘探开发研究院新疆库尔勒 841000;
5. 中国石油大学(北京)地球科学学院北京 102249;
6. 苏州纽迈分析仪器股份有限公司江苏苏州 215163

收稿日期:2018-09-06 修回日期:2019-06-16 出版日期:2019-11-25 发布日期:2019-12-07
通讯作者: 范宜仁,男,1962年10月生,1982年获华东石油学院学士学位,2002年获中国地质大学(北京)博士学位,现为中国石油大学(华东) CNPC测井重点实验室主任、中国石油大学(华东)地球科学与技术学院学术委员会副主任、教授、博士生导师,主要从事测井方法理论、测井综合解释及岩石物理实验等方面教学与研究工作。Email:fanyiren@upc.edu.cn
作者简介:吴俊晨,男,1988年1月生,2010年获长江大学学士学位,现为中国石油大学(华东)博士研究生,主要从事岩石物理实验、复杂储层测井解释与评价等方面研究工作。Email:baggio-10@163.com
基金资助:
国家科技重大专项（2011ZX05020-008），国家自然科学基金项目（No.41474100，No.41674131，No.41574118）和中国石油天然气集团公司科学研究与技术开发项目（2011D-4101）资助。

Simulation of oil-based mud invasion in sandstone reservoir based on a large-sized formation model

Wu Junchen^1,2,3, Fan Yiren^1,2,3, Cao Juntao⁴, Fan Zhuoying⁵, Wang Xiaolong^1,2,3, Wu Fei⁶

1. School of Geosciences, China University of Petroleum, Shandong Qingdao 266580, China;
2. Laboratory for Marine Mineral Resources, National Laboratory for Marine Science and Technology, Shandong Qingdao 266071, China;
3. CNPC Key Well Logging Laboratory, China University of Petroleum, Shandong Qingdao 266580, China;
4. Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Xinjiang Korla 841000, China;
5. College of Geosciences, China University of Petroleum, Beijing 102249, China;
6. Suzhou Niumag Analytical Instrument Corporation, Jiangsu Suzhou 215163, China

Received:2018-09-06 Revised:2019-06-16 Online:2019-11-25 Published:2019-12-07

摘要/Abstract

摘要：

选用扇形砂岩地层模块作为大尺寸地层模型，以钻井液侵入多功能物理模拟系统为平台，实施了长时间油基钻井液侵入实验，总结了侵入过程中地层模块径向电阻率、油基钻井液滤液滤失流量和侵入深度的变化规律，获得了不同物性条件下的油基钻井液侵入特征；实现了地层条件下的砂岩储层油基钻井液侵入数值模拟。研究结果表明：油基钻井液侵入过程中，地层模块径向电阻率向远离井壁方向依次开始增大，且增大速度随径向深度增大而降低。侵入初期，滤液滤失流量迅速减小，累计滤失量增幅变缓，侵入深度较浅；侵入达到动态平衡后，滤液滤失流量趋于稳定，累计滤失量随侵入时间线性增加，侵入深度增大速度极慢。与高孔渗砂岩储层相比，低孔渗砂岩储层中的滤液滤失流量和累计滤失量更大，侵入更快、更深，径向电阻率率先增大且增大速度更快。

关键词: 油基钻井液侵入, 地层模块, 物理模拟, 数值模拟, 径向电阻率, 滤失流量

Abstract:

By choosing a sectorial sandstone formation module as the large-sized formation model, and a multifunctional physical simulation system of drilling mud invasion as the platform, this study carries out long-term oil-based mud invasion experiments, summarizes the variation laws of the radial resistivity of formation module, the filtration rate and invasion depth of oil-based mud filtrate, obtains the characteristics of oil-based mud invasion under different reservoir physical properties, and finally realizes the numerical simulation of oil-based mud invasion in sandstone reservoir under formation conditions. The results show that the radial resistivity of formation module increases in turn during oil-based mud invasion, and its increase rate slows down with the increasing of radial depth. At the beginning of invasion, the filtration rate decreases rapidly, the increase rate of the cumulative filtrate volume slows down, and the invasion depth is shallow. After the invasion reaches a dynamic equilibrium state, the filtration rate tends to be stable, the cumulative filtrate volume increases linearly with time, and the increase rate of the invasion depth tends to be very slow. For the low porosity and low permeability sandstone reservoir, as compared with the high porosity and high permeability sandstone reservoir, the filtration rate and cumulative filtrate volume are greater, the invasion is faster and deeper, and the radial resistivity increases earlier and faster.

Key words: oil-based mud invasion, formation module, physical simulation, numerical simulation, radial resistivity, filtration rate

中图分类号:

TE135

吴俊晨, 范宜仁, 曹军涛, 范卓颖, 王小龙, 吴飞. 基于大尺寸地层模型的砂岩储层油基钻井液侵入模拟[J]. 石油学报, 2019, 40(11): 1407-1414.

Wu Junchen, Fan Yiren, Cao Juntao, Fan Zhuoying, Wang Xiaolong, Wu Fei. Simulation of oil-based mud invasion in sandstone reservoir based on a large-sized formation model[J]. Acta Petrolei Sinica, 2019, 40(11): 1407-1414.

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基于大尺寸地层模型的砂岩储层油基钻井液侵入模拟

Simulation of oil-based mud invasion in sandstone reservoir based on a large-sized formation model

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