Title: Differential Diagenesis of Reservoir Rock Related to Primary Sedimentary Environment
Abstract: Abstract Detailed sedimentological analysis of 215’ of cores from the Misoa formation in well PB-691, Campo Benitez, resulted in establishing the paleoenvironmental sucession of the sequence, which includes four important reservoir levels known as B-6-X.A,B,C, and D. Porosity and permeability values from core analysis, together with special petrologic studies with thin section petrography of sandstones, SEM, XRD, and Mineralog™ allowed us to know not only the mineralogical composition of the reservoir rocks, but mainly important information on the diagenetic process and which rocks were affected most. This integrated study permitted a more comprehensive characterization of the reservoir rocks and their relationship with their primary environment of deposition, its hydraulic regime, and their final nature and behavior after the diagenesis. In conclusion, it was found of fundamental importance to know the sedimentary environment of deposition of the sequence, since the diagenesis affected the reservoir rocks according to their original sedimentary conditions, so that identifying similar sequences by electrofacies in adjacent wells, their reservoir behaviour could also be correlated. Once tested this relationship within this field would open the possibility of using this method in other areas. Similar core studies in wells LL-2929 and LL-3091 show this close relationship between primary sedimentary environment, differential diagenesis and quality reservoir rocks.
Publication Year: 1992
Publication Date: 1992-03-08
Language: en
Type: article
Indexed In: ['crossref']
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