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Planning of an Offshore Well Plugging Campaign: A Vehicle Routing Approach

Planning of an Offshore Well Plugging Campaign: A Vehicle Routing Approach

Category
Journal publication
Abstract
When a petroleum well no longer serves its purpose, the operator is required to plug and abandon (P&A) the well to avoid contamination of reservoir fluids. An increasing number of offshore wells needs to be P&A’d in the near future, and the costs of these operations are substantial. Research on planning methods in order to allocate vessels that are required to perform these operations in a cost-efficient manner is therefore essential. We use an optimization approach and propose a mixed integer linear programming model based on a variant of the uncapacitated vehicle routing problem that includes precedence and non-concurrence constraints to plan a plugging campaign. P&A costs are minimized by creating optimal routes for a set of vessels, such that all operations that are needed to P&A a set of development wells are executed. In a case study, we show that our proposed optimization approach may lead to significant cost savings compared to traditional planning methods and is well suited for P&A planning purposes on a tactical level.
Client
  • Norges forskningsråd / 209697
Language
English
Author(s)
  • Bakker Steffen J.
  • Aarlott Mats Mathisen
  • Tomasgard Asgeir
  • Midthun Kjetil Trovik
Affiliation
  • Norwegian University of Science and Technology
  • SINTEF Industry / Sustainable Energy Technology
Year
2017
Published in
Lecture Notes in Computer Science
ISSN
0302-9743
Publisher
Springer Verlag
Volume
10572 LNCS
Page(s)
158 - 173