TY - JOUR
T1 - Theoretical study of conditions for generation of periodic wellbore flow due to inflow of a lower-enthalpy fluid
AU - Matsumoto, Mitsuo
AU - Itoi, Ryuichi
AU - Fujimitsu, Yasuhiro
N1 - Funding Information:
The authors thank Mr. Kosuke Kaneta, Mr. Masaya Nagaso, and Dr. Tatsuya Kajiwara from Geothermal Engineering Co., Ltd. for helpful discussions and comments based on their experiences in real fields. They also thank Geothermal Engineering Co., Ltd. for financial support.
Funding Information:
The authors thank Mr. Kosuke Kaneta, Mr. Masaya Nagaso, and Dr. Tatsuya Kajiwara from Geothermal Engineering Co. Ltd. for helpful discussions and comments based on their experiences in real fields. They also thank Geothermal Engineering Co. Ltd. for financial support.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/1
Y1 - 2021/1
N2 - The authors have numerically simulated periodic wellbore flow due to inflow of a lower-enthalpy fluid at a shallow feed zone, while a higher-enthalpy fluid flows in at a deep feed zone. Typical flow patterns such as constant and periodic flows appear depending on dimensionless parameters, which has been investigated extensively. Generation of the periodic flow is governed by a simple nature described using a mean specific enthalpy of the shallow and deep reservoirs weighted by their productivity indices as well as a modification factor of the weight. The findings provide a useful guideline for forecasting generation of the periodic flow as well as developing an effective mitigation measure.
AB - The authors have numerically simulated periodic wellbore flow due to inflow of a lower-enthalpy fluid at a shallow feed zone, while a higher-enthalpy fluid flows in at a deep feed zone. Typical flow patterns such as constant and periodic flows appear depending on dimensionless parameters, which has been investigated extensively. Generation of the periodic flow is governed by a simple nature described using a mean specific enthalpy of the shallow and deep reservoirs weighted by their productivity indices as well as a modification factor of the weight. The findings provide a useful guideline for forecasting generation of the periodic flow as well as developing an effective mitigation measure.
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U2 - 10.1016/j.geothermics.2020.101948
DO - 10.1016/j.geothermics.2020.101948
M3 - Article
AN - SCOPUS:85091240876
SN - 0375-6505
VL - 89
JO - Geothermics
JF - Geothermics
M1 - 101948
ER -
