Seminar: Improved inverse modelling techniques for geothermal reservoir models Event as iCalendar

01 May 2015

2 - 3pm

Venue: Room 439.201

Location: Level 2, UniServices House, 70 Symonds Street

Host: Dr Richard Clarke

Contact email: rj.clarke@auckland.ac.nz

 

A research seminar by Elvar Bjarkason, PhD candidate, Department of Engineering Science, University of Auckland.

 

Elvar-Bjarkason

Abstract:

Present automated inversion methods for geothermal model calibration are limited by having to perform multiple forward runs of the nonlinear geothermal reservoir simulator. This study looks at two types of methods to facilitate calibration of numerical geothermal reservoir models. The first approach is to advance available unconstrained optimisation methods, which require derivatives of geothermal model outputs, by calculating necessary derivatives more efficiently. An alternative is to formulate the problem as a PDE (partial differential equation) constrained optimisation problem and solve either a full space or a set of reduced space problems. The constrained approach promises effective model calibration for large-scale problems by avoiding multiple nonlinear forward simulations.