Numerical simulation of instability of geothermal production well

Ryuichi Itoi, Yasunari Katayama, Toshiaki Tanaka, Naoto Kumagai, Takaichi Iwasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Oscillations in wellhead pressure are sometimes observed in production wells with multiple feedzones. This instability affects stable steam production, and in extreme cases may cause steam production from the well to cease altogether. In this study, we developed a coupled model of transient wellbore and reservoir flows with two well feedzones. Then, numerical simulations were carried out to evaluate the effects of reservoir temperature on the flow characteristics of wells with multiple feedzones. These simulation results show that the cyclic changes in wellhead pressure are caused by temporal changes in the flash point depth within the wellbore.

Original languageEnglish
Title of host publicationGeothermal Resources Council Annual Meeting, GRC 2013
Subtitle of host publicationA Global Resource, from Larderello to Las Vegas
Pages837-841
Number of pages5
EditionPART 2
Publication statusPublished - Dec 1 2013
EventGeothermal Resources Council Annual Meeting: A Global Resource, from Larderello to Las Vegas, GRC 2013 - Las Vegas, NV, United States
Duration: Sep 29 2013Oct 2 2013

Publication series

NameTransactions - Geothermal Resources Council
NumberPART 2
Volume37
ISSN (Print)0193-5933

Other

OtherGeothermal Resources Council Annual Meeting: A Global Resource, from Larderello to Las Vegas, GRC 2013
CountryUnited States
CityLas Vegas, NV
Period9/29/1310/2/13

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics

Fingerprint Dive into the research topics of 'Numerical simulation of instability of geothermal production well'. Together they form a unique fingerprint.

  • Cite this

    Itoi, R., Katayama, Y., Tanaka, T., Kumagai, N., & Iwasaki, T. (2013). Numerical simulation of instability of geothermal production well. In Geothermal Resources Council Annual Meeting, GRC 2013: A Global Resource, from Larderello to Las Vegas (PART 2 ed., pp. 837-841). (Transactions - Geothermal Resources Council; Vol. 37, No. PART 2).