Abstract
Quartz cement is the most important cementing agent in the Upper Nubian Sandstone reservoir within the Hameimat trough, SE Sirte Basin. Determining the timing and paleo-pore fluid compositions is important in order to understand the reservoir quality of the Upper Nubian succession. Fluid inclusions microthermometry study, using a modified U.S.G.S. gas flow heating/freezing stage system, together with basin modeling was carried out to determine the time of quartz cementation and paleo-pore fluid compositions. Fluid inclusions study results give a precipitation temperature range of silica cement as 115˚C-128˚C. Investigation of this temperature with burial history curves indicates the onset of quartz overgrowth cementation was in Late Palaeocene probably from through flow of silica-enriched pore fluid. Tice and Teu's measurements indicate that these were complex brines.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call