Premium
The Palaeoclimate and Microscopic Reservoir Characteristics of Shanxi Formation Shales from Lower Permian in Qinshui Basin
Author(s) -
HUANG Junping,
YANG Zhanlong,
CHEN Qilin,
DI Jun,
BAI Yunlai,
LI Zhiyong,
HUANG Chenggang
Publication year - 2015
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12302_20
Subject(s) - geology , permian , structural basin , paleontology , geochemistry
Qinshui Basin is the major coal bearing basin in China. And the main exploration target layer is CarboniferousPermian. In recent years, not only in the coal-bed methane has made great progress, and also in the tight gas. Besides, shale gas in the Carboniferous-Permian has showed a good exploration prospect. Although CarboniferousPermian shale in Qinshui Basin is thin of a single layer, the cumulated is large, with high organic carbon content, high-over mature stage, and good gas bearing property. What’s more, data of shale gas resources in China 2011 from the Oil and Gas Resources Strategic Research Center of Ministry of Land Resources has shown that transitional facies formations occupy a certain proportion. Main exploration in the Qinshui Basin has been focused on CBM in the past, with Carboniferous-Permian coal distribution, depositional setting, physical property ,gas-bearing ,etc, been most studied.. But in recent years, with the domestic shale gas exploration and development in full swing, Gu (2011) et al., amounted the geological resources to be 8607×10m by assessing Carboniferous-Permian shale gas resource potential of the Qinshui Basin, and it has shown a certain resource potential. Due to the low degree of exploration, there are only few literatures studied on shale gas geological characteristics in the Carboniferous-Permian of Qinshui Basin. Presently, less research has been put on paleoclimate environment of shale forming and shale reservoir microscope characteristics. Through the analysis of lower permian Shanxi formation shale trace elements, rare earth elements, shale pore types and oil and gas occurrence methods in Xiao Donggou outcrops of the southern Qinshui Basin (sectional position shown in Fig. 1), and research results of the previous this article, studied the shale forming paleoclimate and microscopic characteristics as well other aspects in the Qinshui Basin. Finally, obtained some understandings, which will provide evidence to Carboniferous-Permian shale gas exploration development in the Qinshui Basin.