Results of Deep Drilling in the Western Moat of Long Valley California

PDF Version Also Available for Download.

Description

Long Valley caldera has been explored for its potential geothermal resources for at least two decades. Unocal Geothermal drilled two deep test wells on the resurgent dome of the caldera during 1979. Neither of these wells encountered a deep, high temperature geothermal reservoir. The results from these wells and other geologic data focused exploration on the western caldera moat. Encouraging temperature gradient data in 1982 led to the drilling of a deep test well in 1985. That well, IDFU 44-16, encountered deep temperature reversals and a sequence of rocks unlike the previous penetrations on the resurgent dome. Evidently the well ... continued below

Physical Description

273-278

Creation Information

Suemnicht, Gene January 20, 1987.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

Long Valley caldera has been explored for its potential geothermal resources for at least two decades. Unocal Geothermal drilled two deep test wells on the resurgent dome of the caldera during 1979. Neither of these wells encountered a deep, high temperature geothermal reservoir. The results from these wells and other geologic data focused exploration on the western caldera moat. Encouraging temperature gradient data in 1982 led to the drilling of a deep test well in 1985. That well, IDFU 44-16, encountered deep temperature reversals and a sequence of rocks unlike the previous penetrations on the resurgent dome. Evidently the well is still within the ring fracture system of the caldera and not within a central, upwelling, hydrothermal system which supplies the caldera’s discharge. 9 refs., 8 figs.

Physical Description

273-278

Subjects

Source

  • Proceedings, Twelfth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, Calif., January 20-22, 1987

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Report No.: SGP-TR-109-39
  • Grant Number: AT03-80SF11459
  • Grant Number: AS07-84ID12529
  • Office of Scientific & Technical Information Report Number: 888634
  • Archival Resource Key: ark:/67531/metadc885168

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • January 20, 1987

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

Description Last Updated

  • Dec. 9, 2016, 6:59 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 3

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Suemnicht, Gene. Results of Deep Drilling in the Western Moat of Long Valley California, article, January 20, 1987; United States. (digital.library.unt.edu/ark:/67531/metadc885168/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.