The Field Directory contains the Field Determinations for all active and expired leases
that have been determined producible according to the requirements under 30 CFR 250.115 or
250.116. This list will be updated monthly.
The Notice of New Field Determinations and
Changes to Existing Fields contain the actual changes made to the Field Directory.
This
includes New Producible Leases (NPL's) placed in fields, Field Designation Changes
Affecting Active Leases, Expired, Relinquished or Terminated leases and Reassignments of
Expired Leases. This report is also available in hard copy or on computer disk from the
MMS Gulf of Mexico Region - Public Information Office (phone 1-800-200-GULF).
Reserves Information and Data Available in ASCII Files for Downloading
Download Field Directory and/or Appendixes
Notice
The EIA (Energy Information Agency) field name is shown next to the MMS expanded field
determination. The EIA field number is displayed to allow cross-referencing to the EIA
field data. The expired date column has been expanded to show if the lease has expired,
terminated, been relinquished, or consolidated. Also included in the new format is the
cumulative production (including BOE) by lease.
The Field Directory also includes four appendixes. Appendixes A,
B, are cross-referencing tables relating lease to field and block to field.
Appendix C is a list of operator names (e.g., Auger) referenced to MMS field.
Appendix D is a list of operator field nickname, and all area, block and lease
numbers referenced to MMS field.
The Field Determination Committee at MMS would like to solicit your comments or
suggestions on the newly formatted Field Directory. If you have suggestions or
would like to see any other information included on this page, please reply to
Gerald Crawford.
The Field Determination Committee / Gulf of Mexico OCS Region / Minerals
Management Service
Introduction
An oil and/or gas field in the Federal OCS of the Gulf of Mexico is defined* as an area
consisting of a single reservoir or multiple reservoirs all grouped on, or related to, the
same general geologic structural feature and/or stratigraphic trapping condition. There
may be two or more reservoirs in a field that are separated vertically by intervening
impervious strata, or laterally by local geologic barriers, or by both.
The MMS Gulf of Mexico Field Determination Committee, comprising geologists,
geophysicist, and a petroleum engineer assigns field designations to leases with
qualifying oil and gas discoveries. It reviews new producible lease and first production
memoranda submitted by the District Offices, as well as well logs, geophysical data,
geologic maps, and other pertinent data to establish the existence of a new field or the
extension of an existing field.
Field determinations are assigned for a lease or group of leases so that natural gas
and oil resources, reserves, and production can be allocated on the basis of the geologic
framework of the unique feature that contains the hydrocarbon accumulation. The Committee
strives to include all leases determined capable of producing and associated with a
specific geologic structure in a single field. In the case of a common platform serving a
large structure as well as a minor satellite structure, the Field Determination Committee
may consider it one field. Field determination may be changed at the lessee's or lessor's
request when adequate geologic and/or production data would support such a change.
The new field is usually named after the area and block on which the discovery well is
located. The area encompassed by a field will be revised from time to time to include
additional leases on a geologic structure, leases that have been proven productive by new
drilling, and to split leases into separate fields to adhere to the definition of a field.
* "MMS Guidelines for the Application, Review, Approval, and Administration of the
Deepwater Royalty Relief Program."
