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Volume 9,     Number 3,     Fall 2001

 

OPTIMAL STRATEGY FOR CYCLIC STEAM STIMULATION OIL PRODUCTION: A MATHEMATICAL MODEL
HUAXIONG HUANG AND MARC PAULHUS

Abstract. A central issue of managing a heavy oil production using cyclic steam stimulation process is whether an optimal strategy for adding new wells and removing old wells can be found. In this paper we present a mathematical model which provides a general framework for this type of problem. With suitable assumptions, we formulate the production process as a constrained optimal control problem in continuous time or equivalently a constrained linear programming problem in discrete time. The main advantage of the model is that the size of the problem is not necessarily related to the scale of the operations (number of wells). A numerical algorithm based on the model shown to be efficient is given, as well as results for two test cases of large scale projects.

 

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