Development Of A High Temperature Borehole Fluid Sampler And Its Field Experiment In The Ogiri Geothermal Field, Japan

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Conference Paper: Development Of A High Temperature Borehole Fluid Sampler And Its Field Experiment In The Ogiri Geothermal Field, Japan

Abstract
A high temperature borehole fluid sampler has been under development for the deep-seated geothermal resources research program since 1993 by New Energy and Industrial Technology Development Organization (NEDO). The objective of this program is to produce a downhole system capable of capturing a very high quality, representative sample of the borehole fluid and to deliver it to the surface for subsequent analysis. The system of the borehole fluid sampler is a controlled displacement type (CDS), chosen as the one that offers the best potential for the highest quality sample. The borehole fluid sampler can collect in-situ wellbore fluid at temperatures of up to 300°C and has been tested in geothermal wells several times. In 2001, we conducted a field experiment using a production wells that had two feed zones at the Ogiri geothermal field in Japan. We succeeded in collecting a wellbore fluid sample at each feed zones. The analysis result showed the possibility of influence from injection water to the shallower feed zone.

Authors 
Masatake Satol, Takashi Okabe, Haruya Nakatal, Peter Sleet, Colin Twose, Paul Hirtz, Toshio Kasagi, Kazunori Coko and Tayuki Kondo








Published 
GRC, 2002





DOI 
Not Provided
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Citation

Masatake Satol,Takashi Okabe,Haruya Nakatal,Peter Sleet,Colin Twose,Paul Hirtz,Toshio Kasagi,Kazunori Coko,Tayuki Kondo. 2002. Development Of A High Temperature Borehole Fluid Sampler And Its Field Experiment In The Ogiri Geothermal Field, Japan. In: (!) ; (!) ; (!) . (!) : GRC; p. (!)