Field & Reserves Information

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Homepage Video Tutorial Data Center >>
Field & Reserves Information


Reserves Information includes information on active and expired fields and leases in the Gulf of America. Field data available includes leases assigned to each field, Energy Information Administration (EIA) field code number, and cumulative field production. Lease data available includes OCS blocks, operators, effective date of lease in field, expired lease status, and date and portion of lease within the field.

Field & Reserves - Full Page

ASCII Downloads

Please read our disclaimer prior to downloading files. For additional information, visit FAQ (Frequently Asked Questions) about importing files. For a complete record layout and associated data definitions click on the File Name of interest.

File Name 
Last Updated 
Fixed 
Delimit 
Description 
Field Names Master List Part One 10/7/2026 3:32:08 PM Fixed Delimit Field Name Master List- Field Lease Data
Field Names Master List Part Two 10/7/2026 3:32:33 PM Fixed Delimit Field Name Master List - Field Lease Production Available through March 2026
Appendix A 10/7/2026 3:32:06 PM Fixed Delimit Appendix A - Area/Block to Field Index
Appendix B 10/7/2026 3:32:07 PM Fixed Delimit Appendix B - Lease to Field Index
Appendix C 10/7/2026 3:32:07 PM Fixed Delimit Appendix C - Operator Name to Field Index