... through 3 has a reasonable degree of accuracy at vaporizing gas drive. The accuracy of the MMP predicted from the equations also depends to a certain degree on the accuracy of the experimentally determined molecular weight of the stock-tank oil. The measured molecular weight of oil can deviate ±10...

... systems of oil and water with surfactants and protosur-factants and the data are fit to simple models for pressure and composition dependence. The pressure dependence fits the Tait equation in this pressure range; selected high-pressure data indicate how the compressibility deviates at much higher...

... . The corresponding σ 2 also can be calculated from the results. For later use, the normalized standard deviation, (6) σ N = σ ∑ i = 1 N F 2 M i N , is used. Other statistical measures, such as skewness s and excess kurtosis κ (defined as follows...

.... 15 8 1979 2 3 1981 21 2 1980 1 6 1981 1 6 1981 Copyright 1981, Society of Petroleum Engineers production control upstream oil & gas flow line boundary flow test deviation gas bubble production logging reservoir surveillance pressure loss primary flow...

.... Society of Petroleum Engineers drillstem/well testing constant mass rate flow capacity fluid property Artificial Intelligence Van Everdingen diffusivity outer boundary Trans Drillstem Testing compressibility deviation Raghavan graph Upstream Oil & Gas reservoir equation straight...

... fluid selection and formulation drilling fluid property drilling fluids and materials drilling fluid formulation patent john wiley engineering calculation shear stress equation Upstream Oil & Gas deviation pipe cement slurry power law Bingham model mathematical model average error...

... Artificial Intelligence history matching optimal-control model flow in porous media Upstream Oil & Gas oil-water contact reservoir simulation reservoir simulator optimization problem Fluid Dynamics optimal-control algorithm ordinary differential equation equation deviation permeability...

... in porous media mlf pressure gradient SFNC Bandera core Klinkenberg liquid saturation Fluid Dynamics coefficient liquid gas ratio Upstream Oil & Gas correlation value deviation equation saturation Forchheimer coefficient equilibrium saturation Standard Deviation permeability mobility...

... experiments. The underlying cause of these deviations is the different style of grain packing in the river-bar sands. 1 6 1972 1 6 1972 1 6 1972 1 6 1972 1972. Society of Petroleum Engineers Fluid Dynamics Upstream Oil & Gas flow in porous media dune grain size packet...

...-values predicted from use of the charts. The charts predicted the data points used in their development to predicted the data points used in their development to an average deviation of 3.77 percent. However, the deviation of the charts from the three independent data sources was 11.88 percent for 13...

... flooding. 1 6 1970 1 6 1970 1 6 1970 1 6 1970 1970. Society of Petroleum Engineers Upstream Oil & Gas flow rate polyethylene oxide Fluid Dynamics deviation polymer solution flow enhanced recovery polymer correlation reservoir molecule experimental data...

... to pure gases and liquids, has an average absolute deviation from experimental values of 0.16 percent and 0.18 percent, respectively. As applied to 4,465 data points on condensate reservoir fluids, with temperatures to 322 degrees F and pressures to 15,500 psi, the average deviation was pressures...

... the electrical conductivity of shaly sands. Experiments conducted with NaCl solutions showed that the equation is obeyed, except in the case of saturated salt solutions where minor deviations were observed. A possible explanation is given for this discrepancy. As the clay content and the porosity of shales may...

...Surjit M. Avasthi; Harvey T. Kennedy An equation developed for gaseous hydrocarbon mixtures predicts molal volumes with an average absolute deviation of 0.73 percent when applied to 264 natural gas and condensate systems including 2,043 PVT points. Another equation developed for liquid hydrocarbon...

... in form to van der Waal's equation of state. For the paraffin hydrocarbons methane through n-hexane and nitrogen, an average absolute deviation of 1.9 percent was obtained on 1,006 data points described in the literature by 14 authors. When this equation is extended to complex, liquid hydrocarbon mixtures...

... oceanographic data Engineer Gulf Coast Oceanographer deviation storm Upstream Oil & Gas recurrence frequency historical record significant wave recurrence interval significant wave height Hurricane design wave minor hurricane maximum significant wave highest wave wave height critical site...

... of the major oil-producing areas in the world. A multiple regression analysis program written for the IBM 7094 digital computer was used to compare numerous equations and to calculate their coefficients. The final equation containing 11 coefficients resulted in an average absolute deviation of 7.4 percent...

... up to 7,026 psia. The predicted and experimental compressibility factors for these five mixtures had an average absolute deviation of 0.55 percent. INTRODUCTION Two-parameter generalized correlations based on the principle of corresponding states (PCS) are presently available for reliably predicting...

... phase compositions. This work applies this explicit approach with the objective of improving hydrocarbon mixture phase behavior predictions. SPEJ P. 363ˆ 1 12 1966 1 12 1966 1 12 1966 1 12 1966 1966. Society of Petroleum Engineers PVT measurement ngaa k-value deviation...

...C.E. Murphey; J.B. Cheatham, Jr. Presently, complete control of borehole direction cannot be obtained during drilling, and most straight-hole drilling methods attempt to resist hole deviation rather than control direction. Many of the theories advanced as possible explanations of the cause of hole...