Sedimentary microfacies of the Paleogene Dongying Formation in Liuchu Oilfield in Raoyang Sag of Central Hebei Depression and its development significance
Zhang Shujuan1,2, Luo Yongsheng2, Liu Dating2
1 Department of Resources and Earth Sciences，China University of Mining and Technology（Beijing），Beijing 100083 2 Exploration and Development Research Institute，PetroChina Huabei Oilfield Company，Renqiu 062552, Hebei
Abstract The Liuchu Oilfield is a complicated block oil pool，which is located at the Shanwang faulted nose structure in the Liuchu structural belt of central southern Raoyang Sag，Central Hebei Depression. Currently the oilfield produces a fairly high water-cut. The main facies indicators of the fluvial sandbodies have been established based on the comprehensive analyses of core description，correlation and division of stratigraphic intervals，individual sandbody microfacies and log facies description. The results indicate that during the deposition of Member 2 and Member 3 of Dongying Formation，the Liuchu area was dominated by the low-sinuosity braided fluvial facies. The main petroliferous sandbodies can be divided into fluvial channel，fluvial bank and flood plain subfacies which are further subdivided into channel-bed lag, point bar，natural levee, crevasse splay，overbank and flood plain microfacies. The following characteristics for the sandbodies of different microfacies were also discussed. The adjustment of jection-production relationship of petroleum reservoir can be made according to the internal heterogeneity of the sandbodies of different microfacies. It is also a reliable geologic foundation for petroleum field exploitation.
About author: Zhang Shujuan，born in 1968，graduated and obtained a bachelor degree from Northwest University in 1990. Now she is a senior engineer, and a Ph.D. candidate at Department of Resources and Earth Sciences, China University of Mining and Technology (Beijing), and is mainly engaged in synthetical geology of reservoir. E-mail：yjy_zsj@petrochina.com.cn.
Cite this article:
Zhang Shujuan,Luo Yongsheng,Liu Dating. Sedimentary microfacies of the Paleogene Dongying Formation in Liuchu Oilfield in Raoyang Sag of Central Hebei Depression and its development significance[J]. JOURNAL OF PALAEOGEOGRAPHY, 2008, 10(3): 231-239.
Zhang Shujuan,Luo Yongsheng,Liu Dating. Sedimentary microfacies of the Paleogene Dongying Formation in Liuchu Oilfield in Raoyang Sag of Central Hebei Depression and its development significance[J]. JOPC, 2008, 10(3): 231-239.
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