三维多分量地震技术在川西新场地区深层致密砂岩裂缝检测中的应用

doi:10.7623/syxb201005006

石油学报 ›› 2010, Vol. 31 ›› Issue (5): 737-743.DOI: 10.7623/syxb201005006

三维多分量地震技术在川西新场地区深层致密砂岩裂缝检测中的应用

蔡希源唐建明陈本池

中国石油化工股份有限公司北京 100728

收稿日期:2010-01-05 修回日期:2010-04-08 出版日期:2010-09-25 发布日期:2010-11-30
通讯作者: 蔡希源
作者简介:蔡希源，男，1953年3月生， 2000年获中国地质大学（北京）博士学位，现为中国石油化工股份有限公司总地质师，教授级高级工程师，主要从事油气勘探地质理论、勘探方法技术研究和勘探实践管理工作。
基金资助:
国家科技重大专项（2008ZX05003）“碎屑岩层系大中型油气田富集规律与勘探关键技术”资助。

A 3D multi-component seismic exploration technique applied to the detection of deep-seated tight sandstone fractures in the Xinchang area of the western Sichuan Basin

CAI Xiyuan TANG Jianming CHEN Benchi

Received:2010-01-05 Revised:2010-04-08 Online:2010-09-25 Published:2010-11-30

摘要/Abstract

摘要：

针对以往利用三维纵波地震资料无法准确预测川西地区深层致密砂岩裂缝，特别是网状发育的规模裂缝系统的难题，在川西地区实施了三维多分量地震勘探。充分利用三维多分量地震纵横波地震属性、方位各向异性以及横波分裂现象估算裂缝发育的方位和密度，较好地解决了川西新场气田须家河组超致密砂岩裂缝网络系统的预测问题，为勘探和开发井位设计提供了可靠依据；同时，形成了针对不同尺度裂缝的预测方法和技术流程。钻探证实，三维多分量地震技术在川西新场地区深层致密砂岩裂缝预测中效果显著，钻井成功率由过去的50%提高到了89%。

关键词: 三维多分量地震, 致密砂岩裂缝型气藏, 多波地震属性, 方位各向异性, 横波分裂, 裂缝检测, 川西地区

Abstract:

The 3D multi-component seismic exploration was carried out in the western Sichuan Basin for the previous use of 3D P-wave seismic data failed to precisely predict fractures in deep-seated tight sandstones of this area, especially disabling to solve the problem of determining giant net-fractured systems. The 3D multi-component seismic exploring technique can predict the azimuth and density of the fracture development by means of P-and S-wave seismic attributes, azimuthal anisotropy and S-wave splitting phenomenon, and it contains various predicting methods and technical processes for different-size fractures. A full application of this technique preferably resolved the problem in predicting multi-size net-fractured systems of ultra-tight sandstones of the Xujiahe Formation in the Xinchang gasfield, western Sichuan and offered some credible proofs for the well planning in gas exploration and development. The drilling has proved that the newly drilled wells planned by means of the 3D multi-component seismic exploring technique in the Xinchang area, western Sichuan, are almost high-yield gas-wells, and the drilling success ratio has been raised from 50% in the past to 89% at present.

Key words: 3D multi-component seismic technique, tight-sandstone gas reservoir, multi-wave seismic attribute;azimuthal anisotropy, S-wave splitting, fracture detection, western Sichuan Basin

蔡希源唐建明陈本池. 三维多分量地震技术在川西新场地区深层致密砂岩裂缝检测中的应用[J]. 石油学报, 2010, 31(5): 737-743.

CAI Xiyuan TANG Jianming CHEN Benchi. A 3D multi-component seismic exploration technique applied to the detection of deep-seated tight sandstone fractures in the Xinchang area of the western Sichuan Basin[J]. Editorial office of ACTA PETROLEI SINICA, 2010, 31(5): 737-743.

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三维多分量地震技术在川西新场地区深层致密砂岩裂缝检测中的应用

A 3D multi-component seismic exploration technique applied to the detection of deep-seated tight sandstone fractures in the Xinchang area of the western Sichuan Basin

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