多参数声学全波形反演及气藏检测

doi:10.7623/syxb201602007

石油学报 ›› 2016, Vol. 37 ›› Issue (2): 214-221.DOI: 10.7623/syxb201602007

多参数声学全波形反演及气藏检测

石玉梅, 曹宏, 李宏兵, 宋建勇, 郭宏伟, 晏信飞, 李凌高

中国石油勘探开发研究院北京 100083

收稿日期:2015-08-19 修回日期:2016-01-15 出版日期:2016-02-25 发布日期:2016-03-11
通讯作者: 石玉梅,女,1966年4月生,1989年获成都地质学院学士学位,2001年获中国矿业大学博士学位,现为中国石油勘探开发研究院高级工程师,主要从事波动方程正反演、储层及流体识别、多分量地震等理论和方法研究。Email:symei@petrochina.com.cn
作者简介:石玉梅,女,1966年4月生,1989年获成都地质学院学士学位,2001年获中国矿业大学博士学位,现为中国石油勘探开发研究院高级工程师,主要从事波动方程正反演、储层及流体识别、多分量地震等理论和方法研究。Email:symei@petrochina.com.cn
基金资助:
国家重大科技专项(2011ZX05001、2016ZX05001)资助。

Multi-parameter acoustic full waveform inversion and gas reservoir detection

Shi Yumei, Cao Hong, Li Hongbing, Song Jianyong, Guo Hongwei, Yan Xinfei, Li Linggao

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

Received:2015-08-19 Revised:2016-01-15 Online:2016-02-25 Published:2016-03-11

摘要/Abstract

摘要：

致密油气藏储层物性与围岩差异小,地震异常弱,需要更高灵敏度的检测方法和技术。基于多参数声学全波形反演提供的高精度地层体积模量和密度,通过多相介质岩石物理模型,获取储层物性参数并进行致密气藏"甜点"预测。阐述了时间域体积模量和密度两参数声学全波形反演,分析了Gassmann方程和Koster-Toksöz方程的特征,提出了基于全频带地震数据的多参数声学全波形反演策略及联合Gassmann方程和Koster-Toksöz方程的气藏检测方法。该方法充分利用了先验信息及时-空域多参数全波形反演,给出了高精度地层弹性参数,同时考虑了Kuster-Toksöz方程刻画孔隙形态能力和Gassmann方程易用性特征,所构建的气藏指示因子考虑了孔隙流体和孔隙度因素,能较准确地指示气藏的存在和品质。通过在致密砂岩气田的实际应用,有效气藏("甜点")预测结果与测井及钻井基本一致。

关键词: 多参数, 声学全波形反演, 岩石物理, 模量分解, 气藏因子

Abstract:

Tight hydrocarbon reservoirs have the similar physical properties with the surrounding rocks, as well as weak seismic anomaly, for which the more sensitive detection method and technology is required. Based on the high-accuracy formation bulk modulus and density provided by multi-parameter acoustic full waveform inversion, multiphase medium rock physical model is used to obtain the physical parameters of reservoirs and predict the "sweet spot" of tight gas reservoirs. This paper elaborates the dual-parameter acoustic full waveform inversion of volume modulus and density in time domain, analyzes the characteristics of Gassmann equation and Kuster-Toksoz equation, and proposes a multi-parameter acoustic full waveform inversion strategy based on full-band seismic data and the gas reservoir detection method using Gassmann equation and Kuster-Toksoz equation. In this method, the high-accuracy formation elastic parameters provided by multi-parameter full waveform inversion are fully used as well as the pore morphology capacity described by Kuster-Toksoz equation and the usability characteristics of Gassmann equation. The constructed gas reservoir indicator takes account of pore fluid and porosity factor, which can more accurately indicate the existence and quality of gas reservoirs. Through practical application in tight sand gas fields, it is obtained that the prediction results of effective gas reservoirs("sweet spot") are also basically consistent with the results of logging and drilling well.

Key words: multi-parameter, acoustic full waveform inversion, rock physics, modulus decomposition, gas reservoir indicator

中图分类号:

TE155

石玉梅, 曹宏, 李宏兵, 宋建勇, 郭宏伟, 晏信飞, 李凌高. 多参数声学全波形反演及气藏检测[J]. 石油学报, 2016, 37(2): 214-221.

Shi Yumei, Cao Hong, Li Hongbing, Song Jianyong, Guo Hongwei, Yan Xinfei, Li Linggao. Multi-parameter acoustic full waveform inversion and gas reservoir detection[J]. Acta Petrolei Sinica, 2016, 37(2): 214-221.

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多参数声学全波形反演及气藏检测

Multi-parameter acoustic full waveform inversion and gas reservoir detection

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