History of hydrocarbon charge on the Atlantic margin: Evidence from fluid-inclusion studies, West of Shetland

Abstract

Research Article| September 01, 1998 History of hydrocarbon charge on the Atlantic margin: Evidence from fluid-inclusion studies, West of Shetland J. Parnell; J. Parnell 1School of Geosciences, Queen's University of Belfast, Belfast BT7 1NN, United Kingdom Search for other works by this author on: GSW Google Scholar P. Carey; P. Carey 1School of Geosciences, Queen's University of Belfast, Belfast BT7 1NN, United Kingdom Search for other works by this author on: GSW Google Scholar W. Duncan W. Duncan 2Deminex UK Oil and Gas Ltd., Bowater House, 114 Knightsbridge, London SW1X 7LD, United Kingdom Search for other works by this author on: GSW Google Scholar Author and Article Information J. Parnell 1School of Geosciences, Queen's University of Belfast, Belfast BT7 1NN, United Kingdom P. Carey 1School of Geosciences, Queen's University of Belfast, Belfast BT7 1NN, United Kingdom W. Duncan 2Deminex UK Oil and Gas Ltd., Bowater House, 114 Knightsbridge, London SW1X 7LD, United Kingdom Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1998) 26 (9): 807–810. https://doi.org/10.1130/0091-7613(1998)026<0807:HOHCOT>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation J. Parnell, P. Carey, W. Duncan; History of hydrocarbon charge on the Atlantic margin: Evidence from fluid-inclusion studies, West of Shetland. Geology 1998;; 26 (9): 807–810. doi: https://doi.org/10.1130/0091-7613(1998)026<0807:HOHCOT>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Fluid inclusions in Jurassic reservoir sandstones help us to understand the history of hydrocarbon charge in the West of Shetland region. The sandstones contain both hydrocarbon and aqueous fluid inclusions. Hydrocarbons are present in trails of secondary inclusions through detrital grains, and as primary inclusions in quartz overgrowths. This is direct evidence for at least two episodes of hydrocarbon charge before the present oil entered the rock, consistent with indirect evidence from burial history modeling and organic geochemistry. Fluorescence colors indicate that the two oils are of distinct composition. The first oil was degraded, reflecting an episode of uplift and exposure to near-surface fluids before reburial and migration of a second live oil. Oils comparable to these two paleocharges were mixed to produce the oils that are encountered in the current reservoir pores, showing that they were preserved despite repeated tectonic events at the Atlantic margin. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.