Title

Application of multi-wave exploration technology to detect the natural micro-fracture in Marcellus shale-gas reservoirs

单位

(1.中国地质大学(北京)能源学院，北京100083；2.中国石油化工集团国际石油勘探开发有限公司，北京100029；3.美国德克萨斯大学奥斯汀分校经济地质局，美国奥斯汀78758；4.中国石油化工股份有限公司石油勘探开发研究院，北京100083)

Organization

(1.School of Energy Resources,China University of Geosciences,Beijing 100083,China;2.Sinopec International Petroleum Exploration and Production Corporation,Beijing 100083,China;3.Bureau of Economic Geology,University of Texas,Austin 78758,USA;4.Sinopec Exploration & Production Research Institute,Beijing 100083,China)

摘要

近年来，应用于复杂油气藏勘探的3C-3D、9C-3D等多分量地震勘探技术在裂缝性储层预测中的优势日益受到业界关注。相比于传统的纵波(PP)勘探技术，多波多分量地震勘探技术可以直接引入对岩性、裂缝等敏感的横波(PSV)信息。基于美国Marcellus页岩区3C-3D纵波-转换横波勘探地震资料，在简述快/慢转换横波(PSV-1/PSV-2)法微裂缝探测的基础上，重点论述了纵波-转换横波(PP-PSV)联合反演天然张性微裂缝识别及含气性检测过程，指出基于纵波-转换横波联合反演出的密度、纵横波速度比等组合属性参数能有效地识别天然微裂缝的开闭性，预测有利含气区带。

Abstract

The advantage of multi-component seismic technology in fractures detection such as 3C-3D and 9C-3D etc.,which have been applied to the exploration of complicated oil and gas reservoir,becomes more and more popular in recent years.Compared to the conventional PP wave technology,multi-wave multi-component technology can directly integrated the S-wave information sensitive to lithology,cracks etc.Based on the 3C-3D PP-PSV seismic data of Marcellus Shale in the United States,a brief introduction on the micro-crack detection method by using fast (PSV-1) and slow (PSV-2) converted wave is followed by the presentation of the natural micro-fracture detection by PP-PSV joint inversion.Research shows that,inversion density,compressional and shear wave velocity ratio (vP/vS) and other combined characteristic parameters extracted from PP-PSV joint inversion volume,can effectively distinguish between the opening and closing natural micro-fractures,as well as predict the favorable gas-bearing zones.

关键词：

转换横波(PSV); 联合反演; 裂缝检测; 页岩气藏; Marcellus页岩;

Keywords:

converted-wave(PSV); joint inversion; fracture detection; shale gas reservoir; Marcellus shale;

基金项目

DOI

10.3969/j.issn.1000-1441.2014.05.012

北美Marcellus页岩气藏多波勘探天然微裂缝检测