声学全波形反演预测饱和度

doi:10.7623/syxb201711007

石油学报 ›› 2017, Vol. 38 ›› Issue (11): 1284-1292.DOI: 10.7623/syxb201711007

声学全波形反演预测饱和度

石玉梅, 谢韬, 宋建勇, 杨志芳

中国石油勘探开发研究院北京 100083

收稿日期:2017-04-01 修回日期:2017-08-28 出版日期:2017-11-25 发布日期:2017-12-08
通讯作者: 石玉梅,女,1966年4月生,1989年获成都地质学院应用地球物理专业学士学位,2001年获中国矿业大学地球探测与信息技术专业博士学位,现为中国石油勘探开发研究院高级工程师,主要从事地震理论、方法和技术研究。Email:symei@petrochina.com.cn
作者简介:石玉梅,女,1966年4月生,1989年获成都地质学院应用地球物理专业学士学位,2001年获中国矿业大学地球探测与信息技术专业博士学位,现为中国石油勘探开发研究院高级工程师,主要从事地震理论、方法和技术研究。Email:symei@petrochina.com.cn
基金资助:
国家自然科学基金项目（No.41504110）和中国石油天然气集团公司基础研究项目（2016A-3301）资助。

Prediction of saturation using acoustic full waveform inversion

Shi Yumei, Xie Tao, Song Jianyong, Yang Zhifang

PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China

Received:2017-04-01 Revised:2017-08-28 Online:2017-11-25 Published:2017-12-08

摘要/Abstract

摘要：

饱和度是储层定量描述的重要参数之一，研究饱和度对于地下流体分布、储量估计及井位设置都至关重要。基于全波形反演提供的高精度地层弹性参数，研究了地震饱和度预测方法。通过数学分析和数值计算，讨论了流体体积模量和孔隙空间体积模量特征及其对流体的敏感性，并在此基础上，提出了利用两参数全频带声学全波形反演和Brie公式预测饱和度的方法。通过数值计算，分析了体积模量和密度反演误差及Brie公式中指数因子误差对饱和度预测的影响。通过四川广安气田实际地震数据反演和饱和度预测，进一步验证了方法的有效性。

关键词: 声学全波形反演, 岩石物理, 体积模量, 饱和度, 预测

Abstract:

As an important parameter of quantitative reservoir description, saturation is a great significance for obtaining underground fluid distribution, reserve estimation and well-site settings. Based on the high-precision stratigraphic elastic parameters supplied by full waveform inversion, the seismic saturation prediction method is studied herein. Through mathematical analysis and numerical calculation, the characteristics of fluid bulk modulus and pore space bulk modulus are discussed as well as their fluid sensibility. On this basis, saturation prediction method is proposed based on the acoustic full waveform inversion of two parameters with full spectrum band and Brie formula. The influence of the inversion error of bulk modulus and density and the error of exponential factor in Brie's fluid mixing equation on saturation prediction is also analyzed by numerical calculation, which provides the basis for the reasonable and effective application of the method. The validity of this method is further verified through the actual seismic data inversion and saturation prediction of Guang'an gasfield in Sichuan province, China.

Key words: acoustic full waveform inversion, rock physics, bulk modulus, saturation, prediction

中图分类号:

P316

石玉梅, 谢韬, 宋建勇, 杨志芳. 声学全波形反演预测饱和度[J]. 石油学报, 2017, 38(11): 1284-1292.

Shi Yumei, Xie Tao, Song Jianyong, Yang Zhifang. Prediction of saturation using acoustic full waveform inversion[J]. Acta Petrolei Sinica, 2017, 38(11): 1284-1292.

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声学全波形反演预测饱和度

Prediction of saturation using acoustic full waveform inversion

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