... 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...

... NMR spectrometer with a signal-to-noise ratio that was several hundred times greater than the NMR logging tools; this was performed on ten plugs at 100% water saturation (Sw) and at irreducible water saturation (Swirr) after capillary pressure and resistivity index (PcRI) measurement, to determine...

... 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...

... ( Table 1 ). It is not possible to perform a correlation between the evaluated wells using well-logs. machine learning Upstream Oil & Gas water saturation investigation log analysis irreducible water saturation numerical simulation Artificial Intelligence total porosity different depth...

... Artificial Intelligence endpoint relative permeability irreducible water saturation flow in porous media absolute permeability formula Upstream Oil & Gas modeling Fluid Dynamics irreducible water endpoint effective permeability Symposium core data porosity determination...

... log analysis correlation Upstream Oil & Gas mercury injection swanson brine permeability water saturation saturation tight gas sand Symposium reservoir well logging NMR measurement porosity pore throat spwla 52nd irreducible water saturation geometric mean sandstone rock...

... 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...

... the virgin zone, as the mud filtrate invasion vanishes when shells read deeper. This way, deep reading NMR can provide us with a direct confirmation 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...

... 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 Abstract...

... cover fully brinesaturated situation, irreducible water saturation, hydrocarbon-bearing condition, and residual oil saturation from the drainage of the samples at hydrocarbon-bearing conditions with brine. The T 2 distributions measured with hydrocarbon-bearing samples demonstrate a bi-peak feature...

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... 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...

... well logging log analysis irreducible water saturation Upstream Oil & Gas Hollin Formation depositional environment Engineering water saturation NMR surface relaxivity capillary pressure porosity spwla 46 coates permeability mercury injection msec saturation petrophysical...

... predictions differ from laboratory measured values by up to 2 orders of magnitude. Irreducible water saturations predicted using a fixed T2 cut-off (fixed pore size cut-off) differ from laboratory measured values by as much as 25–30 saturation units. A prevailing explanation within industry for data scatter...

.... NMR logs were combined with conventional logs to estimate porosity, to derive oil, filtrate, and water volumes, and to assess if reservoir sands were at irreducible-water saturation. After subtracting the oil volume, the NMR bound-fluid volume provides a realistic estimate of irreducible water. Based...