Tight gas sandstone reservoirs in China characteristics and recognition criteria.pdf

Journal of Petroleum Science and Engineering 88–89 (2012) 82–91
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Journal of Petroleum Science and Engineering
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Tight gas sandstone reservoirs in China: characteristics and recognition criteria
Caineng Zou a,⁎, Rukai Zhu a, Keyu Liu a,b, Ling Su a, Bin Bai a, Xiangxiang Zhang a,
Xuejian Yuan a, Jinhong Wang a
a Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China
b CSIRO Earth Science and Resource Engineering, . Box 1130, Bentley WA 6112, Australia
article info abstract
Article history: Tight gas sandstone (tight gas) reservoirs have been widely discovered in a number of basins in China includ-
Received 7 June 2011 ing the Sichuan, Ordos, Turpan-Hami (Tuha), Songliao, Junggar, Tarim, Chuxiong and East China Sea basins.
Accepted 1 February 2012 ically they are of either primary or secondary accumulations. The tight gas accumulations are mostly
Available online 10 February 2012
associated with coal strata. The reservoir rocks are mainly lithic arkosic sandstones and feldspathic lithic
arenite. They are characterized by positional maturities, low cement contents and moderate petro-
Keywords:
logical textural maturities. The ic evolution of the reservoirs is generally at a high level, reaching
tight gas sandstone reservoir
characteristics t