The purpose of this study was to describe depositional and diagenetic
characteristics of the (Jurassic) Smackover formation and subsequently identify and rank
the quality of flow units within Grayson field, Columbia County, Arkansas. The field
has production from the Smackover, a reservoir which consists mainly of highly altered
peloidal grainstones.
This was a four part study including a lithological analysis of ten cores, a
petrographical study of 97 thin sections, a petrophysical study of reservoir properties
from core analyses and borehole logs, and predictive mapping of quality ranked flow
units across the field. Examination of the cores and thin sections revealed H1a as the
main pore type in Grayson field, which was a hybrid of both depositional and diagenetic
processes with dominantly interparticle pores. The lowest ranked reservoir quality
corresponded to intraparticle and intercrystalline pore types, which occurred mainly in
the wackestone/mudstone and packstone/wackestone facies. The highest ranked
reservoir quality corresponded to the H1a pore type which occurred mainly in the
grainestone/packstone facies 1 and 2. The reservoir quality maps identified the spatial distribution of the facies within the field, which could be used to locate zones for
possible in-fill drilling. These results should aid in the economical development of
Grayson field and other similar fields.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/5025 |
| Date | 25 April 2007 |
| Creators | Poole, Kathleen Renee |
| Contributors | Ahr, Wayne M. |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | 4359642 bytes, 9579726 bytes, electronic, application/pdf, application/pdf, born digital |
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