Comparison and Implications of Typical Normal Pressure Shale Gas Development between China and the United States

doi:10.3969/j.issn.1006-6535.2024.04.001

Abstract

Abstract: To address the issues of low single-well production capacity,immature engineering technology,and difficulty in development profitability of China's normal pressure shale gas,and to explore reasonable development approaches,taking Fayetteville Shale Gas Field in the United States and Dongsheng Shale Gas Block in China as examples,based on the geological characteristics of the two gas fields,the evaluation and comparison are conducted in terms of favorable area evaluation,single well productivity and engineering costs.The study shows that the evaluation of favorable areas for shale gas in Dongsheng Block is comparable to Fayetteville,but Dongsheng Block is still in the early stages of development,with greater burial depth and more complex geological conditions.It is necessary to combine the characteristics of later development,learn from the experience of Fayetteville,and further refine and deepen the zoning classification evaluation.The modes of Fayetteville and Dongsheng Shale Gas Field are partition compound development.The supporting engineering technology is gradually improved.For all that,the intensity of block fracturing fluid and sanding in Dongsheng are lower than those in Fayetteville,resulting in a lower average single well EUR.Continuous studied is needed.Both Fayetteville Gas Field and Dongsheng Block adhere to the goal of continuous cost reduction.The comprehensive cost per well keeps decreasing,but further efforts are required in Dongsheng Block,aiming to lower the comprehensive cost per well to within 3 000×10⁴ to 3 500×10⁴ yuan.The geological resources of normal pressure shale gas in China are abundant,which is the main source for enhancing reserves and production.By further clarifying favorable areas,tackling supporting engineering technologies,reducing overall costs,the comprehensive benefit development will be realized,which is of great strategic significance for the long-term stable production of shale gas in China.

Key words: normal pressure shale gas, favorable area, productivity evaluation, EUR, Dongsheng Block, Fayetteville Gas Field

CLC Number:

TE132.2

Wang Jiwei, Song Liyang, Kang Yuzhu, Wei Haipeng, Chen Gang, Li Donghui. Comparison and Implications of Typical Normal Pressure Shale Gas Development between China and the United States[J]. Special Oil & Gas Reservoirs, 2024, 31(4): 1-9.

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