Borehole Geophysics in Geothermal Wells--Problems and Progress

PDF Version Also Available for Download.

Description

Surface geophysical techniques are readily adaptable to exploration for and evaluation of geothermal reservoirs because existing equipment and interpretive models can be used. In contrast, the application of borehole geophysics for these same purposes requires the development of equipment to operate dependably in the very hostile environment of some geothermal wells. After equipment ahs been developed and tested, its response must be calibrated with respect to required parameters such as lithology and porosity. This is difficult in geologic environments where there is practically no experience in well-log interpretation. The desired final products are reliable data to guide exploration for geothermal ... continued below

Physical Description

66-74

Creation Information

Keys, W. Scott December 1, 1976.

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

Surface geophysical techniques are readily adaptable to exploration for and evaluation of geothermal reservoirs because existing equipment and interpretive models can be used. In contrast, the application of borehole geophysics for these same purposes requires the development of equipment to operate dependably in the very hostile environment of some geothermal wells. After equipment ahs been developed and tested, its response must be calibrated with respect to required parameters such as lithology and porosity. This is difficult in geologic environments where there is practically no experience in well-log interpretation. The desired final products are reliable data to guide exploration for geothermal systems, and to aid in reservoir evaluation, modeling, and development, in the ways in which well logs are routinely used in the petroleum industry. Researchers in geothermal exploration are still some years from achieving the level of application already attained in petroleum exploration and development. This deficiency is receiving some attention from the U.S. Energy Research and Development Agency (ERDA) and the U.S. Geological Survey. The two agencies cosponsored a workshop on Geophysical Measurements in Geothermal Wells in September 1975 (Baker, Baker, and Hughen, 1975). Sandia Laboratories had previously summarized the state-of-the-art in a report on “Well-Logging Technology and Geothermal Applications” (Baker, Campbell, and Hughen, 1975). For several years the U.S. Geological Survey has had a research program to develop logging instrumentation and log-interpretation techniques for geothermal applications. This summary describes some of the results of that research effort. 3 figs., 7 refs.

Physical Description

66-74

Subjects

Source

  • Proceedings Second Workshop Geothermal Reservoir Engineering, Stanford University, Stanford, Calif., December 1-3, 1976

Language

Item Type

Identifier

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

  • Report No.: SGP-TR-20-12
  • Grant Number: E043-326-PA-50
  • Office of Scientific & Technical Information Report Number: 887313
  • Archival Resource Key: ark:/67531/metadc885548

Collections

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

Office of Scientific & Technical Information Technical Reports

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • December 1, 1976

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

Description Last Updated

  • Nov. 22, 2016, 9:30 p.m.

Usage Statistics

When was this article last used?

Congratulations! It looks like you are the first person to view this item online.

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Keys, W. Scott. Borehole Geophysics in Geothermal Wells--Problems and Progress, article, December 1, 1976; United States. (digital.library.unt.edu/ark:/67531/metadc885548/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.