油气勘探

基于线性化岩石物理反演的物性参数预测方法

  • 张佳佳 ,
  • 印兴耀 ,
  • 张广智 ,
  • 谷一鹏 ,
  • 樊祥刚
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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. 深层油气地质与勘探教育部重点实验室,山东青岛 266580;
    3. 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
张佳佳(1986-),男,湖北随州人,博士,中国石油大学(华东)讲师,主要从事地震岩石物理和地震储集层预测研究。地址:山东省青岛市长江西路66号,中国石油大学(华东)地球科学与技术学院,邮政编码:266580。E-mail:zhangjj@upc.edu.cn

收稿日期: 2019-04-10

  网络出版日期: 2020-01-17

基金资助

国家油气重大专项(2017ZX05049-002,2016ZX05027004-001); 国家自然科学基金(41874146,41674130); 中央高校基础研究业务费专项基金(18CX02061A); 中国石油科技创新基金(2016D-5007-0301); 中国石油科学研究与技术开发项目(2017D-3504)

Prediction method of physical parameters based on linearized rock physics inversion

  • ZHANG Jiajia ,
  • YIN Xingyao ,
  • ZHANG Guangzhi ,
  • GU Yipeng ,
  • FAN Xianggang
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  • 1. School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China;
    2. Key Laboratory of Deep Oil and Gas Geology and Exploration, Ministry of Education, Qingdao 266580, China;
    3. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China

Received date: 2019-04-10

  Online published: 2020-01-17

摘要

针对制约岩石物理反演精度的两个关键问题:岩石物理模型和反演算法,提出了一种线性化岩石物理反演方法。首先,对复杂岩石物理模型进行泰勒展开,得到岩石物理反演问题的一阶近似表达式;然后,利用阻尼最小二乘算法直接求解线性化的岩石物理反演问题,获得岩石物理反演问题的解析解。该方法不需要全局寻优或者随机抽样,而是直接求逆运算,计算效率高。理论模型分析表明,线性化岩石物理模型可以用来近似表示复杂岩石物理模型。实际测井数据和地震数据应用表明,线性化岩石物理反演方法可以获得较为准确的物性参数。该方法适用于线性或轻微非线性的岩石物理模型,对于高度非线性岩石物理模型可能不适应。图8参31

本文引用格式

张佳佳 , 印兴耀 , 张广智 , 谷一鹏 , 樊祥刚 . 基于线性化岩石物理反演的物性参数预测方法[J]. 石油勘探与开发, 2020 , 47(1) : 57 -64 . DOI: 10.11698/PED.2020.01.05

Abstract

A linearized rock physics inversion method is proposed to deal with two important issues, rock physical model and inversion algorithm, which restrict the accuracy of rock physics inversion. In this method, first, the complex rock physics model is expanded into Taylor series to get the first-order approximate expression of the inverse problem of rock physics; then the damped least square method is used to solve the linearized rock physics inverse problem directly to get the analytical solution of the rock physics inverse problem. This method does not need global optimization or random sampling, but directly calculates the inverse operation, with high computational efficiency. The theoretical model analysis shows that the linearized rock physical model can be used to approximate the complex rock physics model. The application of actual logging data and seismic data shows that the linearized rock physics inversion method can obtain more accurate physical parameters. This method is suitable for linear or slightly non-linear rock physics model, but may not be suitable for highly non-linear rock physics model.

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