English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Barite Scale Formation and Injectivity Loss Models for Geothermal Systems

Tranter, M. A., De Lucia, M., Wolfgramm, M., Kühn, M. (2020): Barite Scale Formation and Injectivity Loss Models for Geothermal Systems. - Water, 12, 11, 3078.
https://doi.org/10.3390/w12113078

Item is

Files

show Files
hide Files
:
5004236.pdf (Publisher version), 3MB
Name:
5004236.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-

Locators

show

Creators

show
hide
 Creators:
Tranter, Morgan A1, Author              
De Lucia, M.1, Author              
Wolfgramm, Markus2, Author
Kühn, M.1, Author              
Affiliations:
13.4 Fluid Systems Modelling, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146047              
2External Organizations, ou_persistent22              

Content

show
hide
Free keywords: reactive transport; radial flow; geothermal energy; scaling; phreeqc; formation damage
 Abstract: Barite scales in geothermal installations are a highly unwanted effect of circulating deep saline fluids. They build up in the reservoir if supersaturated fluids are re-injected, leading to irreversible loss of injectivity. A model is presented for calculating the total expected barite precipitation. To determine the related injectivity decline over time, the spatial precipitation distribution in the subsurface near the injection well is assessed by modelling barite growth kinetics in a radially diverging Darcy flow domain. Flow and reservoir properties as well as fluid chemistry are chosen to represent reservoirs subject to geothermal exploration located in the North German Basin (NGB) and the Upper Rhine Graben (URG) in Germany. Fluids encountered at similar depths are hotter in the URG, while they are more saline in the NGB. The associated scaling amount normalised to flow rate is similar for both regions. The predicted injectivity decline after 10 years, on the other hand, is far greater for the NGB (64%) compared to the URG (24%), due to the temperature- and salinity-dependent precipitation rate. The systems in the NGB are at higher risk. Finally, a lightweight score is developed for approximating the injectivity loss using the Damköhler number, flow rate and total barite scaling potential. This formula can be easily applied to geothermal installations without running complex reactive transport simulations.

Details

show
hide
Language(s): eng - English
 Dates: 2020-10-252020-10-012020-10-252020-11-032020
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Internal
 Identifiers: DOI: 10.3390/w12113078
GFZPOF: p3 PT5 Georesources
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Water
Source Genre: Journal, SCI, Scopus, oa
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 12 (11) Sequence Number: 3078 Start / End Page: - Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/140903
Publisher: MDPI