LIU Chuan-lian, XU Jin-li. Estimation Method on Productivity of Oil-producing Lake and a Case Study[J]. Acta Sedimentologica Sinica, 2002, 20(1): 144-150.
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LIU Chuan-lian, XU Jin-li. Estimation Method on Productivity of Oil-producing Lake and a Case Study[J]. Acta Sedimentologica Sinica, 2002, 20(1): 144-150.
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Estimation Method on Productivity of Oil-producing Lake and a Case Study
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1 Laboratory of Marine Geology, Tongji University, Shanghai 200092;
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2 Geological Institute of Shengli Petroleum Administrative Bureau, Dongying Shandong 257000
- Received Date: 2001-10-11
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Abstract
Commonly used methods on evaluating the productivity of oil-producing lake have been reviewed and take the Paleogene Lake (refered to as Dongying Lake) in the Dongying depression, Shandong Province, as a case study. These methods include organic carbon analysis, paleontological analysis and stable carbon isotopic analysis. The Paleogene sediment of the Dongying depression mainly composed by the Dongying Formation (Oligocene) and the Shahejie Formation (Eocene-Oligocene).These formations can be subdivided into some members, for example, the Shahejie Formatin is divided into four members including first member(SHA1), second member(SHA2), third member(SHA3) and forth member(SHA4). Both qualitative and quantitative methods show that the level of productivity in the lower-middle SHA 3, upper SHA 4 and SHA 1 are the highest, the second is the upper SHA 3, and the level of productivity in SHA 2 is the lowest. Compared with the productivity of different modern lakes, we concluded that the lake in lower-middle SHA 3, upper SHA 4 and SHA 1 depositional period are hypertropic lake and these lake are the most favorable for the formation of lacustrine oil. The lake in the upper SHA 3 is eutrophic lake and in SHA 2 is Mesotropic Lake. These lakes have poor potential for the formation of lacustrine oil.
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Proportional views
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