About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 30 (1946)

Issue: 4. (April)

First Page: 561

Last Page: 580

Title: Gramp's Field, Archuleta County, Colorado

Author(s): W. A. Waldschmidt (2)


Gramp's field, in Archuleta County, Colorado, was discovered in 1935, and until now practically no information pertaining to the field has been released for publication. This article sets forth not only details regarding the geology of the field, but also gives data pertaining to operations and production from the drilling of the first well to the close of the operating season in January, 1945. The oil is being produced from the Dakota sandstone (Upper Cretaceous) in which it has accumulated against an east-west fault crossing a north-south anticlinal axis. The average thickness of the producing part of the Dakota sandstone is 152 feet. All the producing wells are at an elevation of more than 8,000 feet and their average depth is 1,250 feet. The producing area of Gramp's ield is 127 acres, and the total production from April, 1937, when installation of storage and pipeline facilities was completed, to January, 1945, has been 2,124,202 barrels. Because of severe winters it is usually necessary to stop field operations from the beginning of January until the middle of April. Gramp's field is unique in that it is privately owned and consequently is free from many State and Federal operating regulations.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Protected Document: $10
Internal PDF Document: $14
Open PDF Document: $24

AAPG Member?

Please login with your Member username and password.

Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].