SPE Annual Technical Conference and Exhibition 2014
DOI: 10.2118/170769-ms
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Observation and Monitoring Well: in Situ Window to Assess Recovery Efficiency

Abstract: Maersk Olie og Gas AS as operator for the Danish Underground Consortium (DUC) has successfully planned and delivered an Observation and Monitoring well in the Halfdan field located in the southern part of the Danish North. Although not entirely unique to the industry (for further examples see Richardson, 1977 1 ; Widmyer, 1987 2 ;Wannell & Ezekwe, 1992 3 ) this will be the first well of its kind for Maersk Oil and the DUC placed in a chalk reservoir. This paper describes the planning and execution phases of t… Show more

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Cited by 7 publications
(3 citation statements)
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“…The RMSE is regularly employed in scientific studies for the evaluation of model performance. , In this study, the RMSE is the square root of the average of squared differences between the predicted viscosity and observed viscosity, and is expressed in the centipoises where n is the number of samples, η i is the predicted viscosity, and η ̂ i is the observed viscosity. However, this metric can be sensitive to the outliers, which can inflate the value of RMSE . To address this issue, MAE is introduced for the calculation of averaged prediction errors of the models, in centipoises …”
Section: Methodsmentioning
confidence: 99%
“…The RMSE is regularly employed in scientific studies for the evaluation of model performance. , In this study, the RMSE is the square root of the average of squared differences between the predicted viscosity and observed viscosity, and is expressed in the centipoises where n is the number of samples, η i is the predicted viscosity, and η ̂ i is the observed viscosity. However, this metric can be sensitive to the outliers, which can inflate the value of RMSE . To address this issue, MAE is introduced for the calculation of averaged prediction errors of the models, in centipoises …”
Section: Methodsmentioning
confidence: 99%
“…The field is developed in an alternating pattern of km-long multistage horizontal producer and water injector wells aimed at maximum water sweep efficiency by applying the Fracture Aligned Sweep Technology (FAST) concept, developed by Maersk Oil (Lafond et al 2010). Several first moves with respect to technology implementation have been made for the field with respect to optimisation (Calvert et al 2014(Calvert et al , 2016Wherity et al 2014). The key for success in these studies has been to link well data representing performance over many km and stimulation zones with seismic data revealing the spatial geometry.…”
Section: The Halfdan Fieldmentioning
confidence: 99%
“…Moreover, tortuosity of a porous medium influences the magnitude and detailed structure of the entrapped fluids in the pore space [6,73]. The distribution and configurations of the entrapped fluids in the void space of subsurface systems is critical to enhanced oil recovery, rate and efficiency of hydrocarbon production, carbon sequestration management [23,51,77,84] and the integrity of subsurface storage applications [15,32,87].…”
Section: Introductionmentioning
confidence: 99%