1995 National Oil and Gas Assessment and Onshore Federal Lands
Donald L. Gautier, Gordon L. Dolton and Emil D. Attanasi

U. S. Geological Survey Open-File Report 95-75-N
January 1998

This Report is preliminary and has not been reviewed for conformity to U.S. Geological Survey editorial standards and stratigraphic nomenclature.  Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.

CONTENTS

1. Summary
2. Introduction
3. Resources Assessed
4. Methods of Assessment
   1. Geologic assessment methods
   2. Economic assessment methods
5. Data
   1. Data sources for assessment of onshore Federal Lands
   2. Distribution of Federal Lands
6. Federal Onshore Oil and Gas Resources
   1. Technically recoverable oil and gas resources
   2. Economically recoverable oil and gas resources
7. Conclusions
8. Regional and Province Geologists
9. References
10. Appendix A. Tables of province names and regions, estimates of technially recoverable and economic resources in undiscovered conventional fields, continuous-type accumulations, and coalbed gas accumulations
11. Appendix B. Tables showing play names, codes, and percentages of play resources allocated to onshore Federal Lands
12. Appendix C. Economic assumptions for preparing incremental cost functions

ILLUSTRATIONS

• Figure 1A and B. Incremental costs of finding, developing, and producing:
  • A. Crude oil from undiscovered conventional oil fields and continuous-type oil accumulations
  • B. Gas from undiscovered conventional oils and gas fields, continuous-type oil and gas accumulations, and coalbed gas
• Figure 2A and B. Petroleum regions and provinces, onshore and State offshore areas:
  • A. Conterminous United States
  • B. Alaska
• Figure 3. Technically recoverable and economic oil by region
• Figure 4. Technically recoverable and economic gas by region

TABLES

• Table 1. Summary table of estimated technically recoverable and economic oil, gas, and natural gas liquids from undiscovered conventional fields, from continuous-type accumulations, and from coalbed gas for anshore Federal Lands
• Table 2. Comparison of Federal surface ownership, by State
• Table 3. Estimated volumes by Region of technically recoverable oil, gas, and natural gas liquids from undiscovered conventional, continuous-type, and coalbed gas accumulations for onshore Federal Lands
• Table 4. Estimated volumes by Region for two cost levels of economic oil, gas, and natural gas liquids from undiscovered conventional continuous-type, and coalbed gas accumulations for onshore Federal Lands
• Table A-1. List of onshore and State offshore petroleum provinces of the United States
• Table A-2. Estimated volumes by province of technically recoverable conventional oil, gas, and natural gas liquids as of January 1994 for onshore and State offshore areas of the United States
• Table A-3. Estimated volumes by province of technically recoverable conventional oil, gas, and natural gas liquids as of January 1994 for onshore Federal Lands of the United States
• Table A-4. Technically recoverable oil, gas, and natural gas liquids from conitnuous-type oil and gas accumulations by province as of January 1994 for onshore Federal Lands
• Table A-5. Technically recoverable gas in coalbed gas accumulations by province as of January 1994 for onshore Federal Lands
• Table A-6. Oil, gas, and natural gas liquids in undiscovered conventional fields, continuous-type accumulations, and coalbed gas on onshore Federal Lands with incremental cost of $18 per barrel oil and $2 per thousand cubic feet gas as of January 1994
• Table A-7. Oil, gas, and natural gas liquids in undiscovered conventional fields, continuous-type accumulations, and coalbed gas on onshore Federal Lands with incremental cost of $30 per barrel oil and $3.34 per thousand cubic feet gas as of January 1994
• Table B-1. List of onshore and State offshore petroleum plays of the United States
• Table B-2. Percent of undiscovered conventional oil and gas resources allocated to Federal onshore areas by each play and for small fields by province
• Table B-3. Percent of oil and gas resources allocated to Federal onshore areas for each continuous-type oil and gas play
• Table B-4. Percent of gas allocated to Federal onshore areas for each coalbed gas play

TABLE OF CONVERSIONS TO SI UNITS

[For this assessment, 6,000 cubic feet of gas equals 1 barrel of oil equivalent (BOE)]

UNIT ABBREVIATIONS

Contents

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