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Interpretation of Subsurface Hydrocarbon
Shows
Tim T. Schowalter 2, Paul D. Hess 3
Table of Contents
- ABSTRACT
- INTRODUCTION
- CLASSIFICATION OF HYDROCARBON PHYSICAL MODES OF OCCURENCE
Show types 
Continous Phase Shows (Type 1)- Residual Shows (Type II)
- Molecular-Scale Dissolved Hydrocarbon Phase (Type III)
- Hydrocarbons Incorporated in Kerogen (Type IV)
- Implication of Modes of Occurence
- Identification of Type One Shows
- Hydrocarbon Saturation
- Fluid Recovery
- Extrapolation Case History -Buffalo Field
- EXPLORATION OF TYPE 1 SHOWS IN COMPLEX STRATIGRAPHIC TRAPS
- Simple Stratigraphic Trap Model
- Complex Stratigraphic Trap Model
- Transition Zone Characteristics
- Waste Zone Characteristics
- Exploration Implications of Transition and Waste Zones
- SHOW INTERPRETATION-EXTRAPOLATION CASE HISTORIES
- TEST CASE
- Case histories related to hydrocarbon shows-1982
-
Buffalo field, Harding County, South Dakota Structural map (Fig.
5)
-
Core and log data (Fig. 6; Fig.
21)
- Log
and test data (Fig. 19)
-
Cross section, western part of field (Fig. 20)
-
Capillary pressure curves (Fig. 7; Fig. 22)
- Pay
Dirt field Structural map (Fig. 11)
-
Cross section (Fig. 12)
-
Core and log data (Fig. 13; Fig. 14)
-
Capillary pressure curves (Fig. 15; Fig. 16)
-
Poker Chip field Core and log data (Fig. 17)
-
Capillary pressure curves (Fig. 18)
- SUMMARY AND CONCLUSIONS
- REFERENCES
- Acknowledgments:
- 2 Mosbacher & Pruet Oil Producers, Denver, Colorado.
3 B.W.A.B., Inc., Denver, Colorado.We thank Shell Oil Co., Houston, Texas; Kirkwood Oil and Gas, Casper, Wyoming; and Koch Exploration Co., Wichita, Kansas, for the release of materials presented in this report. Personal acknowledgments to Don Hartman, John McCallum, and Steve Kirkwood for their contributions in assembling the geologic framework for the field studies presented. Some illustrations were adapted from Core Laboratories instructional manuals.
© 1994 American Association of Petroleum Geologists
