Proceedings of the 7th New Zealand Geothermal Workshop 1985. Reinjection experiences in the Otake and Hatchobaru geothermal fields. New Zealand Geothermal Workshop [7, 6-8 Nov. 1985, New Zealand].

Inoue, Kimito. Shimada, Kanichi.

1985

1067
CIENA

0-86869-065-1

This paper presents the recent exploiting state, the developing measures against experienced reinjection problems and geothermal model involved in the underground structure and hot water flow in the Otake-Hatchobaru fields. The following two problems on reinjection are not disregarded to operate geothermal power plants (1) Interference of reinjection with production well (2) Reduction in reinjection capacity of well. In this paper, the problems are presented and discussed on the basis of the field data in the Otake-Hatchobaru fields. Reinjection methods have been devised for preventing reservoir from cooling. Study on silica scale and hydraulic fracturing test have been conducted for the purpose of recovering reinjection capacity or prolonging life time of reinjection well. According to such investigations on reinjection, the reinjection problems have been able to be solved to some extent, compared with those at the initial stage of reinjection experience. ABSTRACT. PRESENT STATUS AND EXPERIENCES OF REINJETION IN THE OTAKE AND HATCHOBARU FIELDS. OTAKE AND HATCHOBARU GEOTHERMAL MODEL. EFFECTS OF HOT WATER REINJECTION. COUNTERMEASURES AGAINST REINJECTION TROUBLES. Cooling of reservoir. Scale deposition. Recovery of reinjection wells by hydraulic fracturing. REFERENCES.

Presenta gráfs., maps.

NUEVA ZELANDIA; ENERGIA GEOTERMICA; CAMPOS GEOTERMICOS; REINYECCION; FLUIDOS GEOTERMICOS;