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Interference test analysis at the Takigami geothermal field, JP

Description: A long term interference test was conducted under conditions of multiwell variable flow rate at Takigami for about ten months in 1987. The test data have been analyzed with an on-line analysis method on the basis of the linesource solution. This method employs Kalman filtering to process the data and then provides the best estimates of reservoir transmissivity and storativity when a new pressure data at an observation well becomes available. The pressure changes measured at seven observation we… more
Date: January 28, 1993
Creator: Itol, Ryuichi; Fukuda, Michihiro; Jinno, Kenji & Gotoh, Hiroki
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Results from a discrete fracture network model of a Hot Dry Rock system

Description: The work described represents a move towards better representations of the natural fracture system. The discrete fracture network model used during the study was the NAPSAC code (Grindrod et al, 1992). The goals of the work were to investigate the application of discrete fracture network models to Hot Dry Rock systems, increase the understanding of the basic thermal extraction process and more specifically the understanding of the Rosemanowes Phase 2B system. The aim in applying the work to the… more
Date: January 28, 1993
Creator: Lanyon, G.W.; Batchelor, A.S. & Ledingham, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Significance of Crack Opening Monitoring for Determining the Growth Behavior of Hydrofractures

Description: A method for determining the size of a crack induced by hydraulic fracturing is presented. The procedure is based on the measurement of the crack opening displacement and the fracture mechanics approach. The proposed method has been tested by conducting laboratory small-scale hydraulic fracturing tests on a granite. It is shown from the preliminary tests that the method provides a reasonable prediction of experimentally observed crack sizes.
Date: January 28, 1993
Creator: Hashida, Toshiyuki; Sato, Kazushi & Takahashi, Hideaki
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A survey of potential geopressured resource areas in California

Description: This paper presents the initial results of a survey of the occurrence and characteristics of geopressured fluid resources in California using the publicly-available database involving more than 150,000 oil and gas wells drilled in the State. Of the 975 documented on-shore oil and gas pools studied, about 42% were identified as potentially geopressured. Geothermal gradients in California oil and gas fields lie within the normal range of 1°F to 2°F per 100 feet. Except for the Los Angeles Basin, … more
Date: January 28, 1993
Creator: Sanyal, S. K.; Robertson-Tait, A.; Kraemer, M. & Buening, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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