基于叠前反演的泥页岩地层压力预测方法

doi:10.12108/yxyqc.20190113

岩性油气藏 ›› 2019, Vol. 31 ›› Issue (1): 113–121.doi: 10.12108/yxyqc.20190113

基于叠前反演的泥页岩地层压力预测方法

李玉凤¹, 孙炜², 何巍巍³, 杨云飞⁴, 章新文⁴, 严移胜⁴

1. 中国地质大学(北京)地球物理与信息技术学院, 北京 100083;
2. 中国石化石油勘探开发研究院页岩油气富集机理与有效开发重点实验室, 北京 100083;
3. 中国石油勘探开发研究院西北分院, 兰州 730020;
4. 中国石油河南油田分公司勘探开发研究院, 郑州 450018

收稿日期:2018-08-18 修回日期:2018-10-13 出版日期:2019-01-18 发布日期:2019-01-18
第一作者:李玉凤(1981-),女,中国地质大学(北京)在读博士研究生,研究方向为地震储层预测、压力预测及裂缝预测等。地址:(100083)北京市海淀区学院路29号。Email:lyfsw1984@163.com。
基金资助:
中国石化科技部基础前瞻项目“碳酸盐岩层系异常地层压力预测方法研究”（编号：G5800-16-ZS-KJB043）与国家重点基础研究发展计划（973）课题“陆相页岩油富集要素与有利区预测”（编号：2014CB239100）联合资助

Prediction method of shale formation pressure based on pre-stack inversion

LI Yufeng¹, SUN Wei², HE Weiwei³, YANG Yunfei⁴, ZHANG Xinwen⁴, YAN Yisheng⁴

1. School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China;
2. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Research Institute of Exploration & Production, Sinopec, Beijing 100083, China;
3. PetroChina Research Institute of Petroleum Exploration and Development-Northwest, Lanzhou 730020, China;
4. Research Institute of Exploration and Development, PetroChina Henan Oilfield Company, Zhengzhou 450018, China

Received:2018-08-18 Revised:2018-10-13 Online:2019-01-18 Published:2019-01-18

摘要/Abstract

摘要： 为了解决泥页岩地层压力预测问题，以焦石坝地区志留系龙马溪组页岩气储层为研究对象，调研分析了现今常用地层压力预测方法的适用性。在对页岩气储层异常压力发育段进行测井响应特征分析的基础上，提出能够有效识别页岩气异常地层压力的新参数，即异常地层压力识别因子；最后利用叠前弹性波阻抗反演结果计算出异常地层压力识别因子，从而预测焦石坝地区泥页岩地层的压力分布特征。与传统预测方法相比，基于叠前弹性波阻抗反演的泥页岩地层压力预测新方法具有更高的精度。该研究成果可以应用于泥页岩地层的压力预测，为页岩气精细勘探提供了依据。

关键词: 异常地层压力, 弹性波阻抗反演, 压力预测, 页岩气

Abstract: With the deep exploration and development of shale gas,formation pressure prediction has become an urgent problem to be solved. Taking shale gas reservoir of Silurian Longmaxi Formation in Jiaoshiba area as the research object,the applicability of traditional formation pressure prediction methods was analyzed. Based on the analysis of logging response characteristics of abnormal pressure development zone of shale gas reservoir,a new parameter,namely abnormal formation pressure factor,was proposed to effectively identify abnormal formation pressure of shale gas. The pre-stack elastic impedance inversion result was used to calculate the abnormal formation pressure factor,so as to predict the pressure distribution characteristics of shale formation in Jiaoshiba area. The prediction result of the new method shows higher accuracy than that of the traditional method. This research results can be applied to pressure prediction of shale formation and provide a theoretical reference for fine exploration of shale gas.

Key words: abnormal formation pressure, elastic impedance inversion, pressure prediction, shale gas

中图分类号:

TE121.34

李玉凤, 孙炜, 何巍巍, 杨云飞, 章新文, 严移胜. 基于叠前反演的泥页岩地层压力预测方法[J]. 岩性油气藏, 2019, 31(1): 113–121.

LI Yufeng, SUN Wei, HE Weiwei, YANG Yunfei, ZHANG Xinwen, YAN Yisheng. Prediction method of shale formation pressure based on pre-stack inversion[J]. Lithologic Reservoirs, 2019, 31(1): 113–121.

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基于叠前反演的泥页岩地层压力预测方法

Prediction method of shale formation pressure based on pre-stack inversion

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