Application of 3D high-precision seismic technology to shale gas exploration: A case study of the large Jiaoshiba shale gas field in the Sichuan Basin

被引：0

作者：

Chen Z. ^{[1
]}

Yang H. ^{[1
]}

Wang J. ^{[1
]}

Zheng T. ^{[1
]}

Jing P. ^{[1
]}

Li S. ^{[1
]}

Chen C. ^{[1
]}

机构：

[1] Sinopec Exploration Company, Chengdu, 610041, Sichuan

来源：

Natural Gas Industry | 2016年 / 36卷 / 02期

关键词：

3D high-precision seismic exploration; Horizontal well; Hydrocarbon information; Large Jiaoshiba shale gas field; Marine facies; Sichuan Basin; Southeast; Stereoscopic exploration; Sweet spot prediction;

D O I：

10.3787/j.issn.1000-0976.2016.02.002

中图分类号：

学科分类号：

摘要：

The accumulation pattern of the marine shale gas in South China is different from that in North America. The former has generally thin reservoirs and complex preservation conditions, so it is difficult to make a fine description of the structural features of shale formation and to reflect accurately the distribution pattern of high-quality shale by using the conventional 2D and 3D seismic exploration technology, which has an adverse effect on the successful deployment of horizontal wells. In view of this, 3D high-precision seismic exploration focusing on lithological survey was implemented to make an accurate description of the distribution of shale gas sweet spots so that commercial shale gas production can be obtained. Therefore, due to the complex seismic geological condition of the Jiaoshiba area in Fuling, SE Sichuan Basin, the observation system of 3D high-precision seismic acquisition should have such features as wide-azimuth angles, small trace intervals, high folds, uniform vertical and horizontal coverage and long spread to meet the needs of the shale gas exploration in terms of tectonic interpretation, lithological interpretation and fracture prediction. Based on this idea, the first implemented 3D high-precision seismic exploration project in the Jiaoshiba area played an important role in the discovery of the large Jiaoshiba shale gas field. Considering that the high-quality marine shale in the Sichuan Basin shows the characteristic of multi-layer development from the Silurian system to the Cambrian system, the strategy of shale gas stereoscopic exploration should be implemented to fully obtain the oil and gas information of the shallow, medium and deep strata from the 3D high-precision seismic data, and ultimately to expand the prospecting achievements in an all-round way to balance the high upstream exploration cost, and to continue to push the efficient shale gas exploration and development process in China. © 2016, Natural Gas Industry Journal Agency. All right reserved.

引用

页码：9 / 20

页数：11

共 21 条

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