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in creator/contributor: "Gotoh, Hiroki"

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Interference test analysis at the Takigami geothermal field, JP

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: Article

Partner: UNT Libraries Government Documents Department

open access

A Study of Production/Injection Data from Slim Holes and Large-Diameter Wells at the Takigami Geothermal Field, Kyushu, Japan

Production and injection data from nine slim holes and sixteen large-diameter wells at the Takigami Geothermal Field, Kyushu, Japan were analyzed in order to establish relationships (1) between injectivity and productivity indices, (2) between productivity/injectivity index and borehole diameter, and (3) between discharge capacity of slim holes and large-diameter wells. Results are compared with those from the Oguni and Sumikawa fields. A numerical simulator (WELBOR) was used to model the avail… more

Date: November 1, 1996

Creator: Garg, S.K.; Combs, J.; Azawa, Fumio & Gotoh, Hiroki

Item Type: Report