Regularity of Oil-Gas Formation and Distribution at Upper Palaeozoic in Central Asia and Its Enlightenment on Exploration in Junggar
Basin

China Petroleum Exploration ›› 2012, Vol. 17 ›› Issue (2): 50-56,89.

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Regularity of Oil-Gas Formation and Distribution at Upper Palaeozoic in Central Asia and Its Enlightenment on Exploration in Junggar Basin

Miao Hongsheng,Wang Xiaoqin,He Lingjuan,Chang Na and Geng Minhui

Miao Hongsheng1, Wang Xiaoqin2, He Lingjuan2, Chang Na3, Geng Minhui3 1. Xinjiang Petroleum Engineering Construction Supervision LLC. of PetroChina Xinjiang Oil field Company, Karamay City, Xinjiang Uygur Autonomous Region 834000; 2. Exploration and Development Research Institute of PetroChina Xinjiang Oilfield Company, Karamay City, Xinjiang Uygur Autonomous Region 834000; 3. No.1 Oil Production Plant of PetroChina Xinjiang Oilfield Company, Karamay City, Xinjiang Uygur Autonomous Region 834000

Online:2012-04-15 Published:2012-04-15

Abstract

Abstract: Oil and gas is abundant in Carboniferous and Devonian Mud of Upper Palaeozoic in Central Asia. Analyzing the regularity of oil-gas formation and distribution at Upper Palaeozoic in Pre-Caspian Basin and Chu-Saryus Basin in Central Asia indicated that oil and gas enrichment zones at Upper Palaeozoic were related to huge fractures and fluids coming from deep of the earth. Interdependency and interaction between deep structures of the earth and sedimentary seal resulted in the enrichment. Predecessors regarded that oil and gas distribution and enrichment in Carboniferous was under control of the distribution of Carboniferous source rock, structure background and volcanic lithofacies zones. Besides, Central Asia is close to Xinjiang, and its geological structure is also similar to that of Junggar Basin. In comparison with the regularity of oil formation and distribution at Upper Palaeozoic, and considering geological features and current state of oil-gas exploration at Carboniferous in Upper Palaeozoic, it was considered that Carboniferous source rocks in Junggar Basin suffered from magmatic emplacement such as jet flow, and were intensively altered, leading to secondary hydrocarbon generation. The pattern of hydrocarbon generation inside volcanic rock is different from the traditional one. With combined action of materials from mantle and hot alteration of source rocks, it is believed that there would be great potential of hydrocarbon generation at Carboniferous in Junggar Basin

Key words: CentralAsia;UpperPalaeozoic, oil-gas formation, regularity of distribution, JunggarBasin;Carboniferous;oil-gas exploration, enlightenment

CLC Number:

P618.13

Miao Hongsheng, Wang Xiaoqin, He Lingjuan, Chang Na and Geng Minhui. Regularity of Oil-Gas Formation and Distribution at Upper Palaeozoic in Central Asia and Its Enlightenment on Exploration in Junggar Basin[J]. China Petroleum Exploration, 2012, 17(2): 50-56,89.

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Regularity of Oil-Gas Formation and Distribution at Upper Palaeozoic in Central Asia and Its Enlightenment on Exploration in Junggar Basin

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