--> Abstract: Characteristics and Resource Potential of Lacustrine Shale Oil and Gas in China, by Zhijun Jin; #90180 (2013)

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Characteristics and Resource Potential of Lacustrine Shale Oil and Gas in China

Zhijun Jin
Exploration & Production Research Institute, SINOPEC, Beijing, China

Chinese petroliferous basins contain several organic rich lacustrine shales, including the Upper Cretaceous Qingshankou Formation in the Songliao Basin, Paleogene Shahejie Formation in the Bohai Bay Basin, Triassic Yanchang Formation in the Ordos Basin, Triassic-Jurassic in the Sichuan Basin, and Permian and Jurassic in the Zhunger Basin. In comparison with the marine shales in the USA, lacustrine shales in China are characterized by young geologic age, limited areal extent, large facies variation, multiple organic types, low thermal maturity, low brittle mineral content, high clay content, and poor diagenesis. Since 2008, China has been actively engaged in lacustrine shale oil and gas exploration. Major breakthroughs have been achieved, successively in the lacustrine shale gas exploration from the Lower Jurassic Ziliujing Formation in the Sichuan Basin and the Triassic Yanchang Formation in the Ordos Basin. Significant progress has been made in the shale oil exploration in the Paleogene in several faulted basins in eastern China. Based on Sinopec’s extensive geologic data such as core data and logging data, this presentation addresses the key geological factors that make the Paleogene shale oil resource in eastern China extremely attractive, and the main technological challenges that impede the large-scale economic exploitation of this resource. Several case studies from the Ordos, Sichuan and Zhunger basins will be used to demonstrate the shale gas resource potential and commercial feasibility in the Upper Paleozoic and Mesozoic lacustrine sequences in China.

AAPG Datapages/Search and Discovery Article #90180©AAPG/SEPM/China University of Petroleum/PetroChina-RIPED Joint Research Conference, Beijing, China, September 23-28, 2013