2012, Volume 14, Issue 6
Strategic Study of CAE >> 2012, Volume 14, Issue 6
Comparison study on accumulation & distribution of tight sandstone gas between China and the United States and its significance
1. China National Oil and Gas Exploration and Development Corporation, Petrochina,Beijing 100034, China;
2. Research Institute of Petroleum Exploration & Development, Beijing 100083, China
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Abstract
The tight gas has already been the important field of the global unconventional resource exploration. The distribution of tight gas in China is very wide; for example, the scale development of Ordos Basin and Sichuan Basin have been achieved. The Rokey Mountain in the United States is the area where the tight gas is well developed. Comparative study on the generation condition and reservoir characters of American tight gas is the useful way to accelerate the development of tight gas and open up the thought of exploration. The result of comparative analysis of tight gas reservoir between China and the United States shows: tight gas of China and the United States havs many common characters, for example, most source rock being coal measure strata, tight reservoir, abnormal formation pressure, resource and reservoir intimate contract and gas reservoir gross distribution and so on; otherness is mainly reflected in tight gas source depositional environment,thermal evolution extent, reservoir heterogeneity, densifying factor, the longitudinal and plane distribution characteristics of gas reservoir. The main factors of are the character of depositional basin, sedimentary environment and deuterogene tectonic feature. In allusion to the particularity of Chinese tight gas, the key points of tight gas exploration and development are intensifying reservoir heterogeneity, high grade reservoir forecast, and the study of gas reservoir distribution and striving to make technological breakthrough to increase well cumulative production.
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