Optimising Reservoir Production in WRFM by Unleashing Locked-in Potential through Trusted Data at Finger's Tip

Abstract

The benefits of credible data and data quality came to bear recently with the restoration of reservoir production in an SPDC field. The reference string produced dry at an average rate of 1500 bopd and Gas Oil Ratio (GOR) of 2000scf/bbl till June 2000 when water breakthrough occurred. GOR increased sharply by 2011 and the interval was closed-in in 2012 at GOR of 8Rsi (Rsi-initial solution gas oil ratio). A previous integrated review proposed water shut-off (WSO) as well as gas shut-off (GSO) to be executed so that this interval can be brought back on stream. In September 2015, an integrated review of Closed-in Wells was done in which all available data pertinent to this well was analysed and reviewed. Based on this comprehensive data, the review team arrived at a conclusion to open up and test the well rather than WSO/GSO proposed in the previous review. In making this decision, the team was convinced it had access to credible and reliable data set. This is enabled with the creation of The Asset Standard Well Reservoir and Facility Management (WRFM) Technical Data Management Plan (TDM) that clearly states data repositories, data owners and focal points. These data sets were easily retrieved from the various data repositories. The Asset Standard Well Reservoir and Facility Management (WRFM) Technical Data Management Plan (TDM) clearly states data repositories, data owners and focal points. The string was opened on October 25, 2015 and it was observed to be stable and flowing at 435 bopd, in line with the review forecast. Well testing of October 29, 2015 validated the production rate at 462bopd, 700scf/bbl (1.6*Rsi) at 27% BSW. The availability of credible and trusted data has therefore helped in optimising production of this well. There is also a cost saving typical of a water shut-off activity. Credible data that are easily accessible can make a difference on the business bottom line especially in optimising production, managing integrity and emergency repairs of an asset. These were demonstrated in the closed-in well review that has led to increased production and cost savings – the benefits of credible data.