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NEOTECTONIC CONTROLS ON PETROLEUM ACCUMULATIONS, OFFSHORE CHINA

NEOTECTONIC CONTROLS ON PETROLEUM ACCUMULATIONS, OFFSHORE CHINA Tectonic activity offshore China during the Late Miocene and Quaternary (“neotectonism”) generated unconformities, resulted in depocentre migration, created new faults and initiated earthquake activity. This episode of structural disturbance, which occurred during post‐rift thermal subsidence, modified pre‐existing hydrocarbon accumulations and formed new pools. Constructive effects of neotectonism occurred in the Bozhong Depression, Zhu #2 Depression and the Yinggehai Basin. These effects included the formation of new structural traps, migration routes and source kitchens. Destructive effects occurred in the Xihu Depression where oil/gas fields were partially breached by post‐trap peneplanation and faulting. There are pools with active gas leakage through neotectonic faults and this seems to suggest a dynamic balance between outboard leakage of gas and inboard migration of hydrocarbons. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Petroleum Geology Wiley

NEOTECTONIC CONTROLS ON PETROLEUM ACCUMULATIONS, OFFSHORE CHINA

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References (145)

Publisher
Wiley
Copyright
Copyright © 2011 Wiley Subscription Services
ISSN
0141-6421
eISSN
1747-5457
DOI
10.1111/j.1747-5457.2011.00490.x
Publisher site
See Article on Publisher Site

Abstract

Tectonic activity offshore China during the Late Miocene and Quaternary (“neotectonism”) generated unconformities, resulted in depocentre migration, created new faults and initiated earthquake activity. This episode of structural disturbance, which occurred during post‐rift thermal subsidence, modified pre‐existing hydrocarbon accumulations and formed new pools. Constructive effects of neotectonism occurred in the Bozhong Depression, Zhu #2 Depression and the Yinggehai Basin. These effects included the formation of new structural traps, migration routes and source kitchens. Destructive effects occurred in the Xihu Depression where oil/gas fields were partially breached by post‐trap peneplanation and faulting. There are pools with active gas leakage through neotectonic faults and this seems to suggest a dynamic balance between outboard leakage of gas and inboard migration of hydrocarbons.

Journal

Journal of Petroleum GeologyWiley

Published: Jan 1, 2011

Keywords: ; ; ; ; ; ; ;

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