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008 260224s xxu
245 0 0 _aImplementation and Assessment of Production Optimization in a Steamflood Using MachineLearning Assisted Modeling
270 _a02/08/2022 ; 02/08/2022
300 _a14 p.
520 _aData Physics reservoir modeling and optimization was described in detail in as SPE paper (SPE-185507) and can be conceptualized as a physics-based model augmented by machine learning. In brief, the production, injection, temperature, steam quality, completion and other engineering data from an active steamflood are continuously assimilated into the Data Physics model using an Ensemble Kalman Filter (EnKF), which is then used to optimize steam injection rates to maximize/minimize multiple objectives such as net present value (NPV), injection cost etc. using large scale evolutionary optimization algorithms. The solutions are low-order and continuous scale, rather than discretized, therefore modeling, forecasting and optimization are significantly faster than traditional simulation. The goal of steamflood modeling and optimization is to determine the optimal spatial and temporal distribution of steam injection that will maximize future recovery and/or field economics. Accurately modeling thermodynamic and fluid flow mechanisms in the wellbore, reservoir layers, and overburden can be prohibitively resource-intensive for operators who instead often default to simple decline curve analysis and operational rules of thumb. Data Physics allows operators to leverage readily-available field data to infer reservoir dynamics from first principles. This paper presents the results of actual implementation of an optimized steam injection plan based on the Data Physics framework. The case study is from a shallow, heavy oil field in the San Joaquin Basin of California, and demonstrates the practical application of Data Physics modeling and the ability to explore future injection plans. The model of the field was fit to historical data in June 2017, after which an optimization was performed and a forward-looking production forecast was established associated with a target plan chosen by the operator. This plan was then implemented in the field over the last year. This paper provides a comparison between the field implementation and the model prediction, which allows for model validation and highlights opportunities for further improvement. For completeness, this paper includes a summary of the modeling and optimization problem and results from the above mentioned paper.
773 _g
942 _cCONGTP
100 1 _aSarma, Pallav
_953243
100 1 _aCalad, Carlos
_959355
100 1 _aZhao, Yong
_959356
111 2 _aCongreso de Producción y Desarrollo de Reservas (7mo. : 2019 nov. 5 al 8 : Mar del Plata, Argentina)
_959344
650 0 _aOptimización
_958677
650 0 _aEstimulación de pozos
_980
650 0 _aYacimientos maduros
_947572
999 _c195014
_d195014
856 _uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/7CongresoProdDesarrolloReservas2019/Papers/2139.pdf