Presentation on theme: "1 Coring Recovering rock samples for: Delineate rock strata types and composition –Clays –Cementation –Grain relationships –Mineralogy Identify sedimentary."— Presentation transcript:
1 Coring Recovering rock samples for: Delineate rock strata types and composition –Clays –Cementation –Grain relationships –Mineralogy Identify sedimentary structures and texture Identify deposition environments to aid mapping, and predict reservoir geometry and likely areal extent Determine porosity and permeability Identify presence of reservoir fluids
10 Core #3880 and # 388 Assignment February 18 2009 Final core description should be typed with two columns: Core depth, and Description (as indicated below). 1.Describe both cores using the standard protocols: ● rock type ● color ● texture ● fossils/trace fossils ● sedimentary structures ● porosity (estimate it) ● oil shows 2.Identify the principal depositional environment (s) of the cored interval in both cores. Do this by identifying the principal facies i.e. - the distinctive rock types that broadly correspond to a certain environment or mode or origin (channel facies, marine bar facies, tidal facies, open marine facies, turbidite facies, etc). 3.Interpret the most likely areal distribution pattern of each reservoir facies in both cores. Use terms like areally extensive, blanket-like, narrow, elongate, lobate, etc.