Petroleum Generation in the Nonmarine Qingshankou Formation (Lower Cretaceous), Songliao Basin, China
- 759 Downloads
The Songliao basin, covering an area of 260 000 km2 in northeast China, is known as one of the world’s most prolific oil- and gas-producing basins. The super giant Daqing oil field is located in the center of the basin with major oil plays in the Lower Creataceous Yaojia and Qingshankou Formations.
The nonmarine Qingshankou Formation also acts a primary source for the basin’s hydrocarbon reserves. Dark lacustrine mudstones with a thickness of between 300 and 400 m are widely distributed in the basin. The Qingshankou Fm. kerogens range from sapropelic to gas-prone. The average organic carbon and total hydrocarbon contents are 2.3 wt.% and 1540 ppm, respectively. The generated crude oils display many typically lacustrine oil characteristics including high wax contents, high nickel/vanadium ratios, low sulfur contents, and light carbon isotopic compositions.
The Gulong depression, west of the Daqing anticlinal belt, was a primary depocenter for the Qingshankou Fm. Here, the unit covers approximately 50 000 km2 and is currently buried to depths of 1900 to 2400 m. The hydrocarbon reserves associated with Qingshankou Fm. can be attributed to the interrelationship among the source-reservoir-seal system which includes encapsulating lacustrine mudstones, and lenticular delta-front and channel filled sand bodies.
Recent drilling has indicated that substantial Qingshankou-derived oil remains to be produced.
KeywordsSource Rock Hydrocarbon Generation Vitrinite Reflectance Songliao Basin Thermal Maturity
Unable to display preview. Download preview PDF.
- Bissada KK (1982) Geochemical constraints on petroleum generation and migration — a review. Proc 2nd ASCOPE Conf, Manila, Oct, 1981, pp. 69–87Google Scholar
- Du Bomin, Xing Shunquan, Zhou Shuxin (1984) Characteristics of reservoir rocks and their diagenetic evolution in the northern part of the Songliao basin. Oil Gas Geol 5: 122–131 (in Chinese)Google Scholar
- Gao Ruiqi (1980) Characteristics of the continental Cretaceous in the Songliao basin. Acta Geol Sin 54: 9–22 (in Chinese)Google Scholar
- Lee KY (1986) Petroleum geology of the Songliao basin, northeast China. US Geol Surv Open File Rep 86–0502, 19ppGoogle Scholar
- Li Desheng (1980) Geological structure and hydrocarbon occurrence of the Bohai Gulf oil and gas basin, China. In: Mason JF (ed) Petroleum Geology in China. Pennwell Publ, Tulsa, pp 180–192Google Scholar
- Li Desheng (1982) The structural characteristics of the eastern china petroliferous basins. Petrol Explor Dev 2: 1–14 (in Chinese)Google Scholar
- Li Desheng (1984) Geologic evolution of petroleum basins on continental shelf of China. Am Assoc Petrol Geol Bull 68: 993–1002Google Scholar
- Li Desheng (1987) geological characteristics of hydrocarbon generation and distribution in the Songliao basin, China. In: Kumar RK, Dwivedi P, Banerjie V, Gupta V (eds) Petroleum Geochemistry and exploration in the Afro-Asian Region. Balkema, Rotterdam, pp 191–195Google Scholar
- Limjback GWM (1975) On the origin of petroleum. Proc 9th World Petrol Congr 2: 357–369Google Scholar
- Li Taiming, Rullkötter J, Radke M, Schaefer RG, Weite DH (1987) Crude oil geochemistry of the southern Songliao basin. Erdöl und Kohle-Erdgas-Petrochemie vereinigt mit Brennstoff-Chemie 40: 337–346Google Scholar
- Liu Bin and Zhao Chunman (1991) Tectonic features of the Lishu Depression, Songliao basin, Jilin. Jilin Geol 10: 44–49 (in Chinese)Google Scholar
- Liu Jiaqi (1989) On the origin and evolution of the continental rift system. Abstr 28th Int Geol Congr 2: 314–315Google Scholar
- Qiu Yinan, Xiao Jingsiu and Wang Zhenbiao (1988) Clastics depositional patterns within Chinese lake basins. China Earth Sci 1: 309–321Google Scholar
- Robinson KM (1987) An overview of source rocks and oils in Indonesia. Proc 16th Annu Conv Indones Petrol Assoc, Jakarta, Oct, 1987, 1: 97–122Google Scholar
- Wang Hengjian and Chao Wenfu (1981) A model of the Cretaceous sedimentary facies in the Songliao basin. Oil Gas Geol 2: 227–242 (in Chinese)Google Scholar
- Yang Wanli (1985) Daqing oil field, People’s Republic of China: a giant field with oil of nonmarine origin. Am Assoc Petrol Geol Bull 69: 1101–1111Google Scholar
- Yang Wanli, Li Yongkang and Gao Ruiqi (1983) Formation and evolution of nonmarine petroleum in the Songliao basin, China. Sci Res Design Inst Daqing Oil Field, China (unpubl report), 22 ppGoogle Scholar
- Yang Wanli, Li Yongkang and Gao Ruiqi (1985) Formation and evolution of nonmarine petroleum in Songliao basin, China. Am Assoc Petrol Geol Bull 69: 1112–1122Google Scholar
- Ye Dequan (1988) Subdivision of the Cretaceous of the Songliao basin based on micropaleobiotic evolution. Acta Micro-palaeontol Sin 5: 111–126Google Scholar
- Ye Dequan, Zhao Chunben, Zhang Ying (1980) The paleontological characteristics of continental fossils from the Cretaceous rocks of the Songliao basin. Acta Petrol Sin 1980 (Oct): 50–57Google Scholar
- Zhang Jinliang, Yu Huilong (1989) Knowledge on genesis of shallow lacustrine sandbodies from hydrocarbon-bearing basins in east China. Oil Gas Geol 10: 40–44 (in Chinese)Google Scholar
- Zhang Kai, Zhang Qing, Yao Huijun, Gao Minyuan (1983) Meso-Cenozoic tectonics and the evolution of riftogenic petroliferous basin along China’s sea area and vicinity. Oil Gas Geol 4: 353–364 (in Chinese)Google Scholar
- Zhao Chuanben (1984) Thermal alteration of spores and pollen and maturity of organic matter of the Cretaceous System, Songliao basin, northeast China. Geochemistry 3: 84–87Google Scholar