The Value of Well Testing—Optimisation of the West Brae Field

Tharagonnet, Michael Paul (Marathon Oil Co.)


The purpose of this paper is to increase the data in circulation regarding the value of well testing on established fields.  The results of five phases of optimisation, resulting in a 17% increase in field production, following the change out of the multiphase flow meter (MPFM) are presented. 

Background on the West Brae field and the uses of the original MPFM will be discussed.  The challenges of monitoring and optimising a subsea field without any measurement at a well level, and the benefits associated with well testing are presented.  The five phases used to optimise this six producer well system are detailed, along with the economic benefits seen.  These economic benefits are compared to the economic case used to justify the replacement of the original MPFM.