岩性油气藏 ›› 2021, Vol. 33 ›› Issue (1): 248–257.doi: 10.12108/yxyqc.20210123

• 勘探技术 • 上一篇    下一篇

基于拟三维多属性反演的优质烃源岩分布预测

姚军, 乐幸福, 陈娟, 苏旺, 张永峰   

  1. 中国石油勘探开发研究院西北分院, 兰州 730020
  • 收稿日期:2019-12-30 修回日期:2020-05-05 出版日期:2021-02-01 发布日期:2021-01-25
  • 作者简介:姚军(1983-),男,硕士,高级工程师,主要从事储层预测及石油地质综合研究等方面的工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535号。Email:yao_j@petrochina.com.cn。
  • 基金资助:
    国家油气重大科技专项“岩性地层油气藏区带、圈闭有效性评价预测技术”（编号：2017ZX05001-003）资助

Prediction of high-quality source rock distribution based on pseudo-3D multi-attribute inversion

YAO Jun, LE Xingfu, CHEN Juan, SU Wang, ZHANG Yongfeng   

  1. PetroChina Research Institute of Petroleum Exploration and Development-Northwest, Lanzhou 730020, China
  • Received:2019-12-30 Revised:2020-05-05 Online:2021-02-01 Published:2021-01-25

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摘要： 四川盆地川西—川中过渡带须家河组是典型的“三明治”结构，源储叠置发育。因此，有效预测优质烃源岩分布成为该层系致密气勘探的决定因素之一。笔者首先以岩心TOC实测值为参照、以常规测井曲线为基础、运用多元线性回归算法计算单井TOC曲线，然后利用二维地震数据建立拟三维地震测网，基于此再进行多属性反演及数据筛选完成了须家河组一、三、五段优质烃源岩分布预测。该方法提高了二维地震资料的利用率，增强了优质烃源岩分布预测结果的准确性，同时提高了多属性反演的计算效率。运用拟三维多属性反演对优质烃源岩分布进行有效预测为致密气在二维地震部署区域的进一步勘探打下了坚实基础。

关键词: 优质烃源岩, 总有机碳含量, 拟三维, 多属性反演, 须家河组

Abstract: The Xujiahe Formation in the transitional zone of central-western Sichuan Basin is a typical "sandwich" structure,with source and reservoir being stacked vertically. The effective prediction of high-quality source rock distribution is one of the major determinants of tight gas exploration in this formation. Based on the measured value of core TOC,conventional logging curves,multiple linear regression algorithm was applied to calculate TOC curve of single well,a pseudo-three dimensional seismic network was built with two-dimensional seismic data,and then multi-attribute inversion and data selection were carried out to complete the distribution prediction of high-quality source rocks in the first,third and fifth members of Xujiahe Formation. The method improves the utilization of two-dimensional seismic data,enhances the accuracy of prediction results of highquality source rock distribution,and improves the calculation efficiency of multi-attribute inversion. The application of pseudo-3D multi-attribute inversion to the effective prediction of high-quality source rock distribution lays a solid foundation for the further exploration of tight gas in the two-dimensional seismic deployment area.

Key words: high-quality source rock, TOC content, pseudo-3D, multi-attribute inversion, Xujiahe Formation

中图分类号: 

  • P631.4
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