Injection-Triggered Occlusion of Flow Pathways in Geothermal Operations
Joint Authors
Brehme, Maren
Petrauskas, Sigitas
Regenspurg, Simona
Leary, Peter
Bulut, Fatih
Milsch, Harald
Valickas, Robertas
Blöcher, Guido
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-05
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Reasons for injectivity decline were investigated in a low-enthalpy geothermal aquifer in Klaipeda (Lithuania).
It is one of the study sites within the DESTRESS project, which demonstrates different stimulation techniques in geothermal reservoirs.
Due to low injectivity, production rates from the Lithuanian field are currently reduced, which lead to negative commercial implications for the site.
Productivity from the same wells is measured to be 40 times higher.
Injectivity decline in aquifers is often related to clogging processes in spatially correlated highly permeable structures, which control the main flow volume.
We subdivided clogging processes into (1) physical, (2) chemical, and (3) biological processes and studied them by analyzing fluid and solid samples as well as operational data.
The methods we used are fluid and solid analyses in situ, in the laboratory and in experimental setups, statistical interpretation, and numerical modeling.
Our results show that the spatially correlating nature of permeable structures is responsible for exponentially decreasing injectivity because few highly permeable zones clog rapidly by intruded particles.
In particular, field operations cause changes of the physical, chemical, and biological processes in the aquifer.
Mineral precipitation and corrosion are the main chemical processes observed at our site.
Microbial activity causes biofilm while fines migration is caused by changes in physical boundary conditions.
Moreover, these processes can affect each other and generate further reactions, for example, microbial activity triggers corrosion in surface pipelines.
American Psychological Association (APA)
Brehme, Maren& Regenspurg, Simona& Leary, Peter& Bulut, Fatih& Milsch, Harald& Petrauskas, Sigitas…[et al.]. 2018. Injection-Triggered Occlusion of Flow Pathways in Geothermal Operations. Geofluids،Vol. 2018, no. 2018, pp.1-14.
https://search.emarefa.net/detail/BIM-1157806
Modern Language Association (MLA)
Brehme, Maren…[et al.]. Injection-Triggered Occlusion of Flow Pathways in Geothermal Operations. Geofluids No. 2018 (2018), pp.1-14.
https://search.emarefa.net/detail/BIM-1157806
American Medical Association (AMA)
Brehme, Maren& Regenspurg, Simona& Leary, Peter& Bulut, Fatih& Milsch, Harald& Petrauskas, Sigitas…[et al.]. Injection-Triggered Occlusion of Flow Pathways in Geothermal Operations. Geofluids. 2018. Vol. 2018, no. 2018, pp.1-14.
https://search.emarefa.net/detail/BIM-1157806
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157806