|Table of Contents|

New Recognitions About Fault Activity of the Southwestern Margin of Gudao Oilfield(PDF)

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

Issue:
2009年第04期
Page:
394-399，422
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
New Recognitions About Fault Activity of the Southwestern Margin of Gudao Oilfield
Author(s):
QU Fang1; CHEN Qing-hua2
(1.School of Resources and Environment, Southwest Petroleum University, Chengdu 610500, Sichuan, China; 2.School of Geo-resources and Information, China University of Petroleum, Dongying 257061, Shandong, China)
Keywords:
fault activity;  Neotectonics;  main growth fault;  hydrocarbon accumulation;  main hydrocarbon expulsion phase
PACS:
TE121
DOI:
-
Abstract:
Aiming at solving the problems of the complicated faults and its ambiguous formation period, through re-establishing principle of fault grade classification, the grade and distribution of faults in the research area are recognized, and the active stages and development characteristics of the main faults are researched according to calculate the rate of fault activity. The results show that the activities of the faults in Cenozoic era decreased gradually in the order of Es4-Es2+3-Es1, then increased in Ed sedimentary period due to the Dongying tectonic movement, and only with slight activities at Guantao period. However, the source faults which were active in early stages revived again during the later Neotectonics and generated large number of new faults in Guantao formation. Thus, the shallow part can accumulate large quantity of hydrocarbon in the main hydrocarbon expulsion phase, which is the key factor for the migration and accumulation of hydrocarbon in the research area.

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Last Update: 2009-12-20