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

Bakker, Steffen J.; Aarlott, Mats Mathisen; Tomasgard, Asgeir; Midthun, Kjetil Trovik
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2469485
Date
2017
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  • Institutt for industriell økonomi og teknologiledelse [1893]
  • Publikasjoner fra CRIStin - NTNU [19694]
Original version
Lecture Notes in Computer Science. 2017, 10572 158-173.   10.1007/978-3-319-68496-3_11
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.
Publisher
Springer Verlag
Journal
Lecture Notes in Computer Science

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