..., often for different regions than those under consideration. A common approach is to attempt tuning available correlations to measured data at hand by modifying correlation coefficients. This is the approach adopted here as correlations apparently do not exist for the region containing the studied...

... reservoir oil reservoir prediction recovery factor actual recovery factor reservoir simulation analogue study reservoir property ANN model key factor dataset database reservoir analogue study correlation coefficient Introduction During the exploration and production of oil and gas...

... of the newly developed model. The statistical analyses showed a positive outcome whereby the proposed model obtained the lowest average absolute percentage relative error of 5.17% and the highest correlation coefficient of 96.8%. The best model tested among the other models has five input parameters...

... X j m a x − X j m i n i = 1 , 2 , ⋯ , n ;   j = 1 , 2 , ⋯ , m (3) Correlation coefficient calculation Firstly, we have these definitions. Δ i ( k ) = | X ′ 0 r ( k ) − X ′ i ( k ) | Δ m...

... decision tree learning artificial neural network Engineering gas reservoir Artificial Intelligence Upstream Oil & Gas membership degree optimization algorithm correlation coefficient correlation degree evaluation criteria system membership function reservoir candidate-well selection...

... dependency resource estimate correlation factor probabilistic aggregation expert opinion portfolio estimation correlation matrix skew-normal distribution correlation coefficient Introduction In the petroleum industry, many engineering and decision analysis problems are, in practice, too...

... production reservoir simulation geostatistical modeling permeability value production data analysis result Reservoir Surveillance Upstream Oil & Gas permeability model permeability distribution flow in porous media Fluid Dynamics integration permeability correlation coefficient drainage...

...). The new technique (Artificial neural network) found to be successful in developing a model for predicting viscosity below bubble point with an outstanding correlation coefficient of 99.3%. A limited number of data points have been collected from Pakistani fields in order to construct, test, and validate...

... drilling fluid formulation drilling fluid selection and formulation petroleum engineer Norway Drilling society of petroleum engineers drilling fluid property correlation coefficient journal overburden The fracture prognosis Research has been conducted at the fracturing laboratory...

... form, which accomplishes this normalization is: (2) Ynorm = ( Y-Ymin ) /   ( Ymax   −   Ymin ) Where: r s = Spearman's rank correlation coefficient n = the number of pairs of observations d i = the differences of the ranked pairs. METHODS HANDLING...

... log data are evaluated to seek the parameters reflecting a good correlation with permeability. After testing each independent variable against core permeability, the variables yielding the highest correlation coefficient are included in multiple regression analysis. Data collected from seven wells...

... rank correlation artificial intelligence leakoff month pi correlation coefficient production indicator correlation natural fracture system evaluation productivity hydraulic fracturing fractured reservoir machine learning upstream oil & gas pg fo linear regression bhtpg coefficient...

... with low correlation coefficients. A new gas gravity correlation that is based on the fraction of non-hydrocarbons present in the sour gas was proposed. Preliminary results indicate that a good improvement over past gravity correlations was achieved. The compositional correlations, still show, however...

... reserves of the constituent fields. reserves evaluation project ur correlation coefficient probabilistic addition expert opinion vijayan tornado diagram reservoir simulation field ur machine learning reservoir characterization gas condensate field van elk complex reservoir commonality...

... addition reserves evaluation society of petroleum engineers gas reserve major gas project interpretation example identified dependency field group 11 correlation coefficient petroleum engineer field group 13 reservoir characterization society field group 12 Introduction This paper...

... permeability reservoir characterization reservoir heterogeneity reservoir simulation vdp 0 correlation coefficient heterogeneity pseudopressure drawdown productivity Abstract The effect of reservoir heterogeneity on the productivity of wells in closed depletion reservoirs is investigated...

... upstream oil & gas evaluation clay mineral heterogeneous reservoir facies 3 log analysis lithofacies well logging determination permeability different lithofacies standard error machine learning facies 4 correlation coefficient error analysis facies 1 equation clastic rock rock type...

... cent and 9.54 per cent respectively. A lower value of AAPRE indicates a better accuracy of the correlation. The correlation coefficient of the new correlation is almost equal to 1.0 (0.95). This shows that a good agreement exists between experimental and calculated bubble point pressure. In comparison...