... irreducible water saturation sandstone matrix point compressional water saturation Crossover Upstream Oil & Gas saturation spwla 58 VPV interpretation vpv wet line equation porosity Symposium sw vpv vpv gas line Crossplot bulk modulus SPWLA 58 th Annual Logging Symposium, June 17-21...

... three types of parametric basis functions to reproduce logarithmic throat-size and grain-size distributions derived from MICP data and grain-size distribution measurements. Magnetic resonance data are also invoked to quantify irreducible water saturation. First, a multi-modal Lorentzian distribution...

... be combined effectively for a variety of applications which are discussed in this section of the paper. Fig. 3 NMR- (top) versus resistivity-based fluid volumetrics (bottom). Irreducible water saturation condition is assumed; the presence of clay as well as other complicating effects is not considered...

... well logging water saturation NMR Symposium pressure testing permeability Upstream Oil & Gas reservoir quality fluid type spwla 56 offshore Gabon oval probe porosity Probe pumpout reservoir log analysis irreducible water saturation water oil contact pump-out station...

... traditional formation evaluation techniques by providing estimation of the irreducible water saturation (Swirr) and permeability throughout the interval of interest. Accurate determination of these parameters benefits the selection of perforation intervals and improves the chances of producing maximum...

.... As described in Merkel (2006), if an interval is at irreducible water saturation, Archie s saturation exponent n can then be determined (Figure 7). SPWLA 54 th Annual Logging Symposium, June 22-26, 2013 5 Reservoirs within GMBU vary in wettability from water- to mixed- to oil-wet based on core USBM...

... of thin sections, core measurements, and NMR logs indicate that the large variations of apparent resistivity are due to variations of irreducible water saturation in each layer - mobile water is null in the evaluated zone of the reservoir. Table 2: Signatures observed on well logs to diagnose different...

... of porosity and the representative pore-throat size determined from the capillary pressure curve; while the end-point effective permeability for the hydrocarbon phase is a function of porosity, representative pore-throat size, and irreducible water saturation. This new permeability model is tested with core...

... the irreducible water saturation and permeability challenges in tight gas sand through the integration of advanced core and log measurements and rock typing methods. However, the well recognized Buckles plot (Buckles, 1965) for rock typing does not show trends of constant bulk volume of water lines due...

... ABSTRACT: Permeability, irreducible water saturation and other parameters associated with the pore structure are very important information evaluation of low permeability reservoirs. With reliable calibration from core plugs, these critical parameters can be obtained from NMR logs...

... for the improved interpretation of focused-sampling probes in OBM environments: We found that irreducible water saturation was influential to determining the spatial distribution of fluids around the wellbore as it affected both the separation of apparent resistivity curves and the early-time portion of pressure...

... of whether a reservoir zone is at irreducible water saturation or not. As more data are acquired, there is increasing evidence of a complex oil viscosity distribution, with considerable variations within a reservoir, both laterally and vertically. In this context, deep reading multi-shell NMR provides...

... well logging log analysis Upstream Oil & Gas irreducible water saturation porosity amplitude spwla 48 Symposium DOIs shell 4 filtrate Schlumberger precision cutoff dimension variation radial variation NMR shell 1 sequence inversion saturation reservoir SPWLA 48th...

... distribution in the presence of hydrocarbon to properly interpret pore size distribution from NMR log. Laboratory measurements of T2 distributions are conducted on sandstone samples under different saturation conditions. The cases cover fully brine- saturated situation, irreducible water saturation...

... logging viscosity Oil Viscosity congo heavy oil reservoir Upstream Oil & Gas joint inversion inversion irreducible water saturation evaluation Symposium heavy oil equation saturation short burst permeability interpretation reservoir SWIR spwla 47 SPWLA 47th Annual Logging...

... Upstream Oil & Gas Artificial Intelligence water cut prediction log data water cut Symposium gas sand resistivity water saturation porosity residual gas saturation well logging irreducible water saturation prediction saturation gas saturation reservoir society of petroleum engineers...

... & Gas exponent irreducible water saturation calculation tight gas sand mineralogy log analysis reservoir sand porosity Ro line saturation exponent invasion petrophysical model gas sand spwla 47 Symposium reservoir permeability water saturation chlorite saturation Pickett plot...

... properties such as porosity, permeability, water saturation, irreducible water saturation (Swirr etc. In this laboratory study routine and special core analysis were performed on two different reservoirs, one turbidite and the other fluvial deltaic. Emphasis was given to analyze the response of Nuclear...

... with the associated values measured by core analysis. The results of the study indicate that NMR performs well at predicting the porosity of 100% brine saturated samples. Permeability predictions differ from laboratory measured values by up to 2 orders of magnitude. Irreducible water saturations predicted using...

... Upstream Oil & Gas well logging viscosity irreducible water saturation Cerro Negro NMR log sandstone resistivity porosity saturation irreducible-water saturation oil signal log analysis well 5 Laterolog spwla 43 Symposium reservoir invasion permeability SPWLA 43 rd...