|Table of Contents|

Main Factors Influencing Oil Reservoir in Jurassic Yan'an Formation in Pengyang Area, Ordos Basin(PDF)

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

Issue:
2010年第03期
Page:
263-267
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Main Factors Influencing Oil Reservoir in Jurassic Yan'an Formation in Pengyang Area, Ordos Basin
Author(s):
LIU Lian-qun1;  LIU Jian-ping2;  LI Yong1;  WEI Min-zhu3
(1.School of Earth Sciences and Resources, Chang'an University, Xi'an 710054, Shaanxi, China; 2.Changqing Oilfield Company, China National Petroleum Corporation, Xi'an 710021, Shaanxi, China; 3.Institute of Regional Geology and Mineral Resources, Xianyang 712000, Shaanxi, China)
Keywords:
Yan'an Formation;  oil reservoir type;  oil accumulation factor;  Pengyang Area;  Ordos Basin
PACS:
P618.13;TE122
DOI:
-
Abstract:
The characteristics of oil reservoir in Jurassic Yan'an Formation in Pengyang Area, Ordos Basin were analyzed, and the factors influencing oil reservoir, which were hydrocarbon source rock, sedimentation, reservoir and structure, were discussed in order to search the payable oil development area. The results showed that the types of oil reservoirin Jurassic Yan'an Formation in Pengyang Area were lithologic and structural traps, oil reservoir of lithologic trap was influenced by sedimentation, and that of structural trap was influenced by fault trap and structure; delta plain distributary channel sand reservoir, which developed in Jurassic Yan-9, Yan-8 and Yan-7 Formations, was an important reservoir, and marginal bank and river island micro sands were optimum reservoir; the more physical property of reservoir in Jurassic Yan'an Formation, the better petroliferous property; structure was complicated, micro structures(such as fault, fornix, small nose uplift, etc.)fully developed in Jurassic Yan'an Formation. In general, lithologic and structural traps, which developed in superposition part of main sand and favorable structure, were the most favorable oil gas accumulation area; the superposition part of high point of structure(such as fornix, nose uplift, etc)and main watercourse could be important for oil prospecting in Jurassic.

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Last Update: 2010-09-20