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PubMed
Article by Wu Z
Article by He Z
Article by Jiang W
Article by Bai S
Article by Li Z
Article by Liu Q
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Characteristics of fault block-lithologic reservoir in third member of Shahejie Formation in deep South-Banqiao sag of Dagang oilfield
WU Zhang-fan1,2, HE Zhong-hua1, JIANG Wei2, BAI Seng3, LI Zuo4, LIU Qi1
1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. Gas Storage Company, PetroChina, Beijing 100101, China;
3. Geology Research Institute of GWDC, Panjin 124010, Liaoning, China;
4. The First Gold Detachment of CAPF, Mudanjiang 157000, Heilongjiang, China
Abstract: Fault block-lithologic reservoirs are the main reservoir type in South-Banqiao sag of Dagang oilfield, in which Es32 and Es33 of the third member of Shahejie Formation are the exploration and development targets in the deep block of South-Banqiao sag. Through the approches of cores observation, well log analyses and integration of previous studies, it is suggested that the target formations are mainly from fan delta sand bodies, which consist of underwater distributary channel, distributary bay, mouth bar and shallow lake. The reservoirs are dominated by moderate-low porosity and low permeability sand. The sand bodies get thinner from northwest to southeast. Both the sand body thickness and the spread of Es33 sandstone is better than Es32 sandstone, indicating a transgression. The distribution of hydrocarbon is mainly controlled by sand body distribution. Oil production testing results indicate that wells with oil production greater than 10 t/d are from Es32 reservoir, which is the major hydrocarbon reservoir in the third member of Shahejie Formation. The underwater distributary channel and the mouth bar sand bodies in the northwest are the favorable targets of hydrocarbon exploration in the future.
Keywords: Dagang oilfield   deep South-Banqiao sag   the third member of Shahejie Formation   fault block-lithologic reservoir   reservoir type  
�ո����� 2017-10-08 �޻����� 2019-01-10 ����淢������  
DOI: 10.3969/j.issn.1004-5589.2019.01.017
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