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Study on Sedimentary Microfacies of the Sand Group Ⅴ of the UpperSha-3 Member in Jie Faulted Block 2 of Linnan Oilfield(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2010年第04期
Page:
363-367
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Study on Sedimentary Microfacies of the Sand Group Ⅴ of the UpperSha-3 Member in Jie Faulted Block 2 of Linnan Oilfield
Author(s):
GUO Tao;  ZHANG Wei-hai;  YUAN Wei
(School of Geo-resources and Information, China University of Petroleum, Dongying 257061, Shandong, China)
Keywords:
sedimentary microfacies;  delta;  Jie Faulted Block 2;  Linnan Oilfield;  Shahejie Formation
PACS:
TE121.3;P618.13
DOI:
-
Abstract:
Based on the regional geological data, the distribution characteristics, index and type of sedimentary microfacies of the sand groupⅤof the upper Sha-3 Member in Jie Faulted Block 2 of Linnan Oilfield were studied systematically by means of core observation, lithofacies and log facies analysis. The results showed that the sand groupⅤof the upper Sha-3 Member in Jie Faulted Block 2 of Linnan Oilfield was a lake delta sedimentary system, parfacies type was delta front; the sedimentary microfacies of the sand groupⅤwas divided into underwater distributary channel, underwater interdistributary bay, mouth bar, distal bar and front sheet sand, and the corresponding recognition modes were built; characteristics and plane distribution of sedimentary microfacies were that the continuity of sand body was fine in east-western profile, mouth bar and front sheet sand were alternate, and sand body horizontally transited from underwater distributary channel to mouth bar or front sheet sand in southeast-northwestern profile. In general, the sand groupⅤwas at the peak of forming delta, and underwater distributary channel, mouth bar and front sand sheet were the favorable reservoir sand bodies.

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Last Update: 2010-12-20