Compressibility of Helium at -10° to 130° F. and Pressures to 4000 P.S.I.A.

Abstract

J. o compute discharge volumes of cylinders containing GradeA helium (nominally 99.995% pure), accurate compressibility data for helium must be known. Several persons have presented data for helium at pressures to approximately 135 atm. (7-4), but these pressures are too low to cover the present range of interest. The Whittaker Report (6) presents computed data to high pressures, but the figures do not agree with those of other workers. Probably the best source for such information is an article by Wiebe, Gaddy, and Heins (7) who obtained compressibility data for helium by using small-volume calibrated pipets, from -70°to 200°C ., at pressures to 1000 atm. These figures are reliable, but extensive interpolation would be required to obtain the information needed for the presently desired temperature and pressure range. Thus, using a different experimental method than Wiebe's, the compressibility of helium was studied at seven temperatures from -10°to 130°F.

PVT-x behavior of helium-nitrogen mixtures from 270 to 353 K and up to 280 bar

“…The second virial coefficients in Tables III and IV are also represented by the functions of temperature. Since the results at 350.00 K for the mixture of 49.964 mol % helium are S12/(cm3 mol'1) = 17.85 + 0.0123( / ) ß2/( 3 mol"1) = -122.92 + 0.5945(7/K) -0.0006662(7/ )2 C,/(cm6 mol'2) = 249.00 -0.476(7/K) C112/(cm6 mol"2) = 347 C i22/(cm6 mol"2) = 585 C2/(cm6 mor2) = 2147.9 -2.54(7/K) (11) 4. Summary In general the uncertainties of the interaction second virial coefficients are somewhat larger than those of the second virial coefficients of the pure components.…”

A method for determining transverse permeability of tight reservoir cores by radial pressure pulse decay measurement

“…In the experiments, the test gas was helium, and its physical properties used in this work include compressibility factor ( z ), dynamic viscosity ( μ ), and compressibility coefficient ( c g ). The relationship between the compressibility factor and pressure for helium is shown in Figure a [ McCarty , ; Stroud et al, ]. Gracki et al [] and Evers et al [] measured dynamic viscosities of helium gas under several temperatures and pressures.…”

PVT Measurements on Petroleum Reservoir Fluids and Their Uses

“…For the details of a Burnett experiment, the reader may see the reference (7). Several research workers have used it for measurements on pure components and some binary mixtures (10,31,43,45,55,58). Very few data on compressibility of multicomponent gas mixtures using the Burnett method have been published (50), although the method is used to some extent for measurements on pipeline sources of natural gas (44) up to about 2000 p.s.i.a.…”