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Keywords: surface area
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Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-TT
... hypothesis that H2S was continually being scavenged by the large surface area of the flow line of this tool and that a shorter tool section should be investigated. This is addressed in the context of the full results discussion in the following section. Figure 2 illustrates the H2S passivation kinetic...
Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-TT
... are manually mixed with different minerals with known compositions. We perform XRD measurements to obtain basal spacing variations. We perform successive controlled nitrogen adsorption-desorption measurements as well as NMR measurements, and propose an inversion algorithm to estimate surface area of each...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-M
... analysis; Brunauer, Emmett and Teller (BET) surface area and pore size distribution help to understand dynamics of core cleaning. The study was carried out on samples from Wolfcamp and Eagle Ford formations. Cleaning has a major impact on various petrophysical properties like porosity (increases up to 50...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-YY
... energy. The change in chemical potential is a function of relative humidity and volume of hydration water. The change in electric potential energy is a function of the CEC, interlayer spacing, and surface area of clay minerals. We perform XRD measurements on clay minerals before and after exposure to 95...
Proceedings Papers

Paper presented at the SPWLA 57th Annual Logging Symposium, June 25–29, 2016
Paper Number: SPWLA-2016-O
... to the clay surface area. Chitale et al. (2000) reported 30-50 monolayers of water adsorbed on the surface of different types of clay minerals. The hydration of clay minerals can have significant influence on laboratory measurements for water saturation, especially in rock samples with high concentrations...
Proceedings Papers

Paper presented at the SPWLA 51st Annual Logging Symposium, June 19–23, 2010
Paper Number: SPWLA-2010-68417
... the model. Empirical models that link permeability to specific surface area (Coates et al. 1991), pore size (Kozeny 1927; Carman 1937; Swanson 1981), or grain size (Berg 1970; Van Baaren 1979) of the reservoir rock have also been popular. These models usually involve one or more mathematical constants...
Proceedings Papers

Paper presented at the SPWLA 48th Annual Logging Symposium, June 3–6, 2007
Paper Number: SPWLA-2007-SSS
... Artificial Intelligence Brine conductance geometry well logging clay coating surface conductance assumption log analysis specific surface conductance surface area electrical conductivity Symposium parallel resistor model rock clay mineral different value Upstream Oil & Gas...
Proceedings Papers

Paper presented at the SPWLA 47th Annual Logging Symposium, June 4–7, 2006
Paper Number: SPWLA-2006-KK
... Upstream Oil & Gas impedance spectroscopy relaxation Dewhurst shale sample spwla 47 Muderong Shale mineralogy Symposium petrophysics Reservoir Characterization frequency shale Probe surface area mudrock dispersion NMR polarization spectroscopy electrode SPWLA 47th Annual Logging...
Proceedings Papers

Paper presented at the SPWLA 37th Annual Logging Symposium, June 16–19, 1996
Paper Number: SPWLA-1996-XX
... surface area frequency range log analysis Fluid Dynamics correlation frequency dependence conductivity resistivity permeability Symposium complex impedance reservoir rock dependence polarization phase angle SPWLA 37th Annual Logging Symposium, June 16-19,1996 ESTIMATING PERMEABILITY...
Proceedings Papers

Paper presented at the SPWLA 30th Annual Logging Symposium, June 11–14, 1989
Paper Number: SPWLA-1989-G
..., for the mapping of porosity, permeability, and lithology from velocity measurements. well logging sand-clay model log analysis Fluid Dynamics surface area sandstone flow in porous media clay content shale SPWLA Thirtieth Reservoir Characterization Upstream Oil & Gas sandy shale velocity...
Proceedings Papers

Paper presented at the SPWLA 28th Annual Logging Symposium, June 29–July 2, 1987
Paper Number: SPWLA-1987-HH
... California Well log analysis Fluid Dynamics test well porosity Symposium mineralogy mineral abundance june 29-july 2 permeability estimate solid curve flow in porous media textural maturity surface area abundance sediment equation agreement core data permeability SPWLA Twenty-Eighth...
Proceedings Papers

Paper presented at the SPWLA 27th Annual Logging Symposium, June 9–13, 1986
Paper Number: SPWLA-1986-GGG
... matrix of gypsum were investigated as a means of delineating the presence of surface conductivity due to minerals having high cation exchange capacities. It was found that spurious complex resistivity spectra can result from improper electrode materials and surface area. In phase resistivity...
Proceedings Papers

Paper presented at the SPWLA 26th Annual Logging Symposium, June 17–20, 1985
Paper Number: SPWLA-1985-M
... electrical circuit electrical response sample electrode interface resistivity surface area sandstone Symposium ABSTRACT Complex impedance data have been collected for 13 sandstones at various levels of saturation with deionized water across the frequency range of 10 kHz to 13 MHz. These data...
Proceedings Papers

Paper presented at the SPWLA 25th Annual Logging Symposium, June 10–13, 1984
Paper Number: SPWLA-1984-MM
... saturations we find that the change in the dielectric constant can be simply related to the change in the volume of water. The change in the dielectric constant at low saturations appears to be related to the roles of bound and free water in the pores of the rock. The ratio of surface area to volume...
Proceedings Papers

Paper presented at the SPWLA 20th Annual Logging Symposium, June 3–6, 1979
Paper Number: SPWLA-1979-WW
... of a sandstone greatly increases the specific surface area of the pore system. The conductance associated with the clay mineral surface can cause significant reduction in the true resistivity of the formation. This leads to serious problems in log interpretation whose true cause has only recently been recognized...
Proceedings Papers

Paper presented at the SPWLA 16th Annual Logging Symposium, June 4–7, 1975
Paper Number: SPWLA-1975-U
... ABSTRACT An investigation has been made of the nature of electrical conductivity in shales to establish the feasibility of determining from logs the types of clays present in shales. Conductivity data from well logs have been compared with both cation-exchange capacities and surface areas...
Proceedings Papers

Paper presented at the SPWLA 16th Annual Logging Symposium, June 4–7, 1975
Paper Number: SPWLA-1975-AA
... condition; i.e., is the hole in gauge with minimum melting. Laboratory data on the electric and acoustic response of frozen soils have shown the significant variables affecting these parameters are salinity, surface area of the soils, and temperature. The laboratory data are used as a guide to interpret...
Proceedings Papers

Paper presented at the SPWLA 13th Annual Logging Symposium, May 7–10, 1972
Paper Number: SPWLA-1972-BB
...SPWLA THIRTEENTH ANNUAL LOGGING SYMPOSIUM, MAY 7-10, 1972 SURFACE AREA OF POROUS MEDIA BY NUCLEAR ESONANCE MAGNETISM by R. Desbrandes, G. Bene, and B. Borcart Institut Frangais du P&role ABSTRACT Nuclear Magnetism Logs give a good estimate of free fluid volume in pores of porous media. A total...

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