A Semi-Analytical Approach to Geothermal Reservoir Performance Prediction

PDF Version Also Available for Download.

Description

This paper presents a simplified analytic treatment of the problem of fluid flow and heat transfer in a hot water reservoir. A multi-layered reservoir is considered, with a circular array of producing wells surrounded by a concentric, circular array of injection wells. Complete injection of produced water, and hence an eventual steady state, is assumed for the flow system. A temperature gradient is assumed in the radial direction. The rock properties are allowed to vary from layer to layer, but are considered uniform within a particular layer. The heat transfer problem is handled by a modification of the solution to ... continued below

Physical Description

126-135

Creation Information

Sanyal, S.K.; Sengul, M. & Meidav, H.T. 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

This paper presents a simplified analytic treatment of the problem of fluid flow and heat transfer in a hot water reservoir. A multi-layered reservoir is considered, with a circular array of producing wells surrounded by a concentric, circular array of injection wells. Complete injection of produced water, and hence an eventual steady state, is assumed for the flow system. A temperature gradient is assumed in the radial direction. The rock properties are allowed to vary from layer to layer, but are considered uniform within a particular layer. The heat transfer problem is handled by a modification of the solution to the problem of heat extraction from fractured dry rocks proposed by Gringarten, et al. (1975). The reservoir is represented as a vertical stack of horizontal layers, with permeable and impermeable layers alternating. The pressure distributions in various layers are calculated by spatial superposition of the continuous line source solution for the given geometry, with average fluid and rock properties within the system. This approach can yield results such as the breakthrough time of injected water in each layer, pressure distribution in space and time and the temperature of the produced water over time. In a study of the Heber geothermal reservoir in the Imperial Valley of California such results have shown reasonably close agreement with the results from computer simulation. Many hot water geothermal reservoirs display a closed temperature anomaly, i.e., the temperature of the reservoir is highest near the center and gradually declines towards the periphery. For such reservoirs a logical development plan is to produce hot water from the central part of the reservoir through an array or cluster of production wells. The heat is extracted from the produced water for power generation, and the cooled water is injected into the cooler marginal areas of the reservoir through an array of injection wells. This paper presents a semi-analytic method for analyzing the heat and fluid flow characteristics of such a system. 3 figs.

Physical Description

126-135

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-20-18
  • Grant Number: E043-326-PA-50
  • Office of Scientific & Technical Information Report Number: 887328
  • Archival Resource Key: ark:/67531/metadc875601

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

  • December 1, 1976

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

Description Last Updated

  • Dec. 1, 2016, 7:33 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 6

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

Sanyal, S.K.; Sengul, M. & Meidav, H.T. A Semi-Analytical Approach to Geothermal Reservoir Performance Prediction, article, December 1, 1976; United States. (digital.library.unt.edu/ark:/67531/metadc875601/: accessed November 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.