Use of microresistivity image logs in detailed reservoir architecture reconstruction of Bartlesville Sandstone, Glenn Pool Field, Northeastern Oklahoma
- Univ. of Tulsa, OK (United States)
The Glenn Sandstone, a fluvial-dominated deltaic system equivalent to the Pennsylvanian Bartlesville Sandstone, has produced for 90 years as the main pay zone of the Glenn Pool field. However, 70% of OOIP remains despite post-primary recovery attempts because of the complex reservoir heterogeneity. Detailed reservoir architecture is critical for further reservoir management. This study is focused on a 160-acre block in the southern part of the field, in which the 130-ft. thick Glenn Sandstone is divided into six discrete genetic intervals (DGIs) descending from DGI A to F. Analysis of microresistivity image logs, calibrated to detailed core description, revealed features including bed boundary, cross stratification and cross strata set boundaries, scour surfaces, mud drapes, and fractures etc. Orientation of these architectural elements permitted a detailed reservoir architecture reconstruction in the vicinity of the Shelf No. 82 well. (1) Structural dip azimuth averages 153{degrees} and dip angle 4{degrees}. (2) DGI C is dominated by lateral accretion bar deposits. Lateral accretion surface dip azimuth shows progressive upward rotation from 200{degrees} to 146{degrees}. Comparison of azimuthal orientations for cross strata and lateral accretion surfaces indicates that the well is located in downstream side of a lateral accretion bar. Average vertical spacing of lateral accretion surfaces is 1.08 ft, and their average structure-corrected dip angle is 6{degrees}. Integration of core study and log facies analysis has resulted in high resolution facies/subfacies architecture models for each DGI, which provide the basis for reservoir simulation and proposed management plan.
- OSTI ID:
- 159957
- Report Number(s):
- CONF-951094-; ISSN 0149-1423; TRN: 95:006835-0055
- Journal Information:
- AAPG Bulletin, Vol. 79, Issue 9; Conference: Meeting of the Mid-Continent Section of the American Association of Petroleum Geologists: technology transfer - crossroads to the future, Tulsa, OK (United States), 8-10 Oct 1995; Other Information: PBD: Sep 1995
- Country of Publication:
- United States
- Language:
- English
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