| SEDIMENTARY PATTERN OF PROTOTYPE BASIN IN THE DEPOSITION PERIOD OF LAIYANG FORMATION AND THE ADVANTAGEOUS AREAS FOR OIL AND GAS EXPLORATION OF JIAOLAI BASIN |
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| 作者姓名： | WU Zhiping* LI Ling LI Wei and ZHOU Yaoqi |
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| 作者单位： | College of Earth’s Resources & Information，Petroleum University，Dongying，Shandong 257061，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 1 Introduction As a Mesozoic relict terrestrial basin controlled and reformed by fracture activities in themiddle to late stage in Mesozoic, Jiaolai basin is situated in the middle of the Ludong uplift, beingoverthrusted upon Jiaobei uplift in the north, adjoining Jiaonan uplift in the south atWulian-Rongcheng fracture, being connected to Tanlu fracture belt in the west, with its NE partextending into the Yellow Sea and connecting to Qianliyan uplift at Qianliyan fracture. Due totec…
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SEDIMENTARY PATTERN OF PROTOTYPE BASIN IN THE DEPOSITION PERIOD OF LAIYANG FORMATION AND THE ADVANTAGEOUS AREAS FOR OIL AND GAS EXPLORATION OF JIAOLAI BASIN |
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| Wu Zhiping,LI Ling,LI Wei,ZHOU Yaoqi.SEDIMENTARY PATTERN OF PROTOTYPE BASIN IN THE DEPOSITION PERIOD OF LAIYANG FORMATION AND THE ADVANTAGEOUS AREAS FOR OIL AND GAS EXPLORATION OF JIAOLAI BASIN[J].Geotectonicaet Metallogenia,2004,28(2):142-156. |
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| Authors: | Wu Zhiping LI Ling LI Wei ZHOU Yaoqi |
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| Institution: | College of Earth's Resources & Information, Petroleum University,Dongying, Shandong 257061,China |
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| Abstract: | Laiyang formation of Jiaolai Basin is the target stratum for oil and gas exploration. By measuring several field sections, the authors find that Laiyang formation reveals the whole processes from development to death of the lake basin and its sedimentary facies differ in different structural locations.Analyses about sedimentary facies and paleocurrent orientations in association with researches about the positive tectonic units such as Dayetou horseback and Chaigou horst indicate that Laiyang sag is a relatively independent sedimentary unit that shows great water depth typical of deep lake or semideep lake and was controlled by Wulongcun fault during the deposition period of Laiyang formation. Its sediments mainly originated from Jiaobei uplift area and Dayetou horseback. Gaomi-Zhucheng sag was a fast-filled basin controlled by Wurong fault and Yishu fault zone, being high in the northeast and low in the northwest and characterized by the development of pluvial facies and fluvial facies in most areas, and with the development of lake facies being limited to local low-lying regions. Selection of advantageous hydrocarbon reservoir areas for exploration purpose mainly relies on the sedimentation pattern of prototype basin and conservation conditions. The central-west area of Laiyang sag covered by overlying Laiyang formation is the most advantageous exploration area. |
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| Keywords: | prototype basin advantageous area for oil exploration deposition period of Laiyang formation Jiaolai Basin |
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