Graduation Semester and Year
2013
Language
English
Document Type
Thesis
Degree Name
Master of Science in Earth and Environmental Science
Department
Earth and Environmental Sciences
First Advisor
John Wickham
Abstract
Delineating reservoir facies in heterogeneous tidal flat carbonates is a challenge which requires analysis at greater resolutions than wireline logs can provide. Such depositional environments are documented in the upper Clear Fork deposits of Fullerton Field in West Texas. This study examined lithofacies and depositional facies of core to gain understanding of the best reservoir facies. Whole-core examination, Core Laboratories and wireline log analysis, thin section microscopy and SEM image analysis were used to delineate reservoirs.Subtidal facies were deemed the poorest of reservoirs because compaction, anhydrite plugging, and burial diagenesis obliterated pore space. Intertidal facies were determined as the best reservoirs, particularly those directly beneath shallowing-upwards cycle tops. Grainier fabric and fabric selective dissolution of these facies increased porosity. Supratidal facies were determined as the second best reservoirs because eogenetic dolomitization protected them from compaction. Furthermore, these depositional facies can be correlated to nearby wells via distinct wireline signatures.
Disciplines
Earth Sciences | Physical Sciences and Mathematics
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Wiksveen, Tore Ray, "Depositional Environments, Diagenesis, And Reservoir Delineation Of The FCU 1947 Upper Clear Fork Cored Interval - An SEM Image Analysis Approach To Pore System Characterization" (2013). Earth & Environmental Sciences Theses. 213.
https://mavmatrix.uta.edu/ees_theses/213
Comments
Degree granted by The University of Texas at Arlington