四川盆地涪陵地区龙马溪组页岩横向各向同性地应力测井评价方法

doi:10.11764/j.issn.1672-1926.2018.10.017

天然气地球科学

四川盆地涪陵地区龙马溪组页岩横向各向同性地应力测井评价方法

邹贤军，陈亚琳

中国石化江汉油田勘探开发研究院，湖北武汉 430223

收稿日期:2018-07-17 修回日期:2018-10-25 出版日期:2018-12-10
作者简介:邹贤军（1979-），男，湖北仙桃人，高级工程师，硕士，主要从事储层预测研究.E-mail：dcxzxj@qq.com.
基金资助:
国家科技重大专项（编号：2016ZX05060）；中国石化科技项目（编号：P17014-2）联合资助.

Geostress logging evaluation method of Longmaxi Formation shale in Fuling area based on transversely isotropic model，Sichuan Basin

Zou Xian-jun，Chen Ya-lin

Research Institute of Petroleum Exploration and Development，SINOPEC Jianghan Oilfield Company，Wuhan 430223，China

Received:2018-07-17 Revised:2018-10-25 Online:2018-12-10

摘要/Abstract

摘要： 页岩由于矿物的定向排列等因素呈现出各向异性，基于各向同性模型的地应力计算方法已不适用。综合测井、岩心实验、压裂施工等数据建立涪陵地区龙马溪组页岩横向各向同性地应力测井评价方法，主要包括：建立垂向有效压力与横波速度关系模板，预测地层压力；利用通过岩石物理建模的方法计算求取目的层的Biot系数；采用速度回归拟合的方法求取页岩横向各向同性介质6个刚度系数，计算横向、垂向杨氏模量及泊松比。应用结果表明横向各向同性模型能更好地反映实际地层情况。

关键词: 龙马溪组页岩, 横向各向同性, 地应力, 地层压力

Abstract: Shale exhibits anisotropy because of preferred alignment of clay particles and tabular bedding.It is not appropriate to compute stress with isotropic model.We introduce a stress logging evaluation method for Longmaxi Formation shale based on transversely isotropic model by analyzing the relation between vertical effective stress and shear wave velocity to predict formation pressure，building rock physics model to compute Biot coefficient and using velocity-regression method to calculate stiffness coefficients.The application results indicate that transversely isotropic model reflects the actual formation more accurately.

Key words: Longmaxi Formation shale, Transversely isotropic, Stress, Pore pressure

中图分类号:

TE311

邹贤军, 陈亚琳. 四川盆地涪陵地区龙马溪组页岩横向各向同性地应力测井评价方法[J]. 天然气地球科学, 2018, 28(12): 1775–1780.

Zou Xian-jun, Chen Ya-lin. Geostress logging evaluation method of Longmaxi Formation shale in Fuling area based on transversely isotropic model，Sichuan Basin[J]. Natural Gas Geoscience, 2018, 28(12): 1775–1780.

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