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
Waste zone
Pay Dirt
Field
- Gas Waste Zone
Transition Zone
Example
Poker Chip
Field
- 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