Modelling of multi-lateral well geometries for geothermal applications

Well inflow modelling in different numerical simulation approaches are compared for a multi-lateral well. Specifically radial wells will be investigated, which can be created using Radial Jet Drilling (RJD). In this technique, powerful hydraulic jets are used to create small diameter laterals (25–50...

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Bibliographic Details
Published in:Advances in geosciences 2018-08, Vol.45, p.209-215
Main Authors: Peters, Elisabeth, Blöcher, Guido, Salimzadeh, Saeed, Egberts, Paul J. P, Cacace, Mauro
Format: Article
Language:English
Subjects:
Analysis
Computer simulation
Drilling
Flight simulators
Flow
Hydraulic flow
Hydraulic jets
Hydrological research
Inflow
Iron
Mathematical models
Modelling
Numerical simulations
Radial flow
Radial wells
Simulators
Solar eclipses
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Summary:Well inflow modelling in different numerical simulation approaches are compared for a multi-lateral well. Specifically radial wells will be investigated, which can be created using Radial Jet Drilling (RJD). In this technique, powerful hydraulic jets are used to create small diameter laterals (25–50 mm) of limited length (up to 100 m) from a well. The laterals, also called radials, leave the backbone at a 90∘ angle. In this study we compare three numerical simulators and a semi-analytical tool for calculating inflow of a radial well. The numerical simulators are FE approaches (CSMP and GOLEM) and an FV approach with explicit well model (Eclipse®). A series of increasingly complex well configurations is simulated, including one with inflow from a fault. Although all simulators generally are reasonably close in terms of the total well flow (deviations
ISSN:1680-7359
1680-7340
1680-7359
DOI:10.5194/adgeo-45-209-2018