Key Technologies of Geological Shale Gas Exploration in the New Period

Du Hang

《International Core Journal of Engineering》 7卷7期 (2021/07) Pp. 338-343

https://doi.org/10.6919/ICJE.202107_7(7).0051

摘要

Limestone is exposed in different periods in the shale mountain area, and the lithology changes greatly, and it is affected by weathering, leaching, and denudation. The caves and cracks are very developed, resulting in serious attenuation of seismic wave energy, and the seismic wave propagation path and seismic wave field are complicated. The original data has a low signal-to-noise ratio. The paper analyses hydraulic fracturing technologies such as underbalanced drilling, controlled pressure drilling and rotary steering drilling. This thesis uses horizontal well drilling and completion and fracturing technology to increase the production and ultimate recovery of shale gas wells, and develop shale gas resources more economically and effectively. Practice has shown that the observation system we chose has overcome the problem of low signal-to-noise ratio in seismic exploration in southern shale areas, and has a strong promotion value.

關鍵字

Shale Gas ； Seismic Reservoir Prediction ； Oil and Gas Exploration

參考文獻

Yongsheng, M. A., Xunyu, C. A. I., & Peirong, Z. H. A. O. China's shale gas exploration and development: Understanding and practice. Petroleum Exploration and Development, 45(4) (2018) 589-603.

LIANG, X., Zhengyu, X. U., ZHANG, Z., Weixu, W. A. N. G., ZHANG, J., Huili, L. U., ... & Yun, R. U. I. Breakthrough of shallow shale gas exploration in Taiyang anticline area and its significance for resource development in Zhaotong, Yunnan Province, China. Petroleum Exploration and Development, 47(1) (2020) 12-29.

Dong, D., Shi, Z., Guan, Q., Jiang, S., Zhang, M., Zhang, C., ... & Wang, S. Progress, challenges and prospects of shale gas exploration in the Wufeng–Longmaxi reservoirs in the Sichuan Basin. Natural Gas Industry B, 5(5) (2018) 415-424.

Xinhua, M. A., & Jun, X. I. E. The progress and prospects of shale gas exploration and development in southern Sichuan Basin, SW China. Petroleum Exploration and Development, 45(1) (2018) 172-182.

Long, S., Feng, D., Li, F., & Du, W. Prospect analysis of the deep marine shale gas exploration and development in the Sichuan Basin, China. Journal of Natural Gas Geoscience, 3(4) (2018) 181-189.