# An analysis of porosity and fluid saturations

A comprehensive geologic study of the prospect is necessary to increase the confidence and reliability of determined reservoir properties such as volume, porosity, and fluid saturations. Sca2017-025 1/12 comparison of residual saturations of an unconventional reservoir rock measured by different capillary pressure laboratory methods. Combined including porosity, fluid saturation, shale volume, permeability, in-place and recoverable hydrocarbons, free hydrocarbons in the shale fraction, toc and adsorbed hydrocarbons, profiles of relative and effective permabilities to the fluid.

Fluid saturations (oil and water): are determined by dean stark distillation saturation profile data helps define the presence of hydrocarbons, relative richness and the type of hydrocarbon that may be produced saturation data as a fraction of the bulk mass helps identify preferred deposits to be exploited in surface mining operations. Porosity, fluid saturations, and volumetric concentra- tions of mineral constituents that honor the well logs, their volume of investigation, the process of invasion. Imbibition in frac fluid transport and fate frac fluid saturations within ~2 –6 inches of the frac face • high frac-face sw is not in equilibrium and capillary forces act to imbibe the fluid into the reservoir away from the frac face • frac fluids imbibed into the formation are effectively locked in place by capillary pressure forces of hundreds to. Wettability, porosity, residual fuel saturations log analysis- porosity, fluid saturations, radioactivity, difference with coal and sandstone by.

Converting p s lab curve to c w pc sw reservoir curve analysis of capillary forces c 2pirson model 3retrort method 2distillation-extraction method indirect methods b 1saturation from cross section map 3cory model 2ofm vacuum distillation method 3determining the saturations a direct methods 1. Pooo3-96 determination of initial fluid saturations - a key factor in by-passed pay determination db bennion, f b thomas, r f bietz hycal energy research laboratories ltd abstract introduction proper evaluation of initial. Routine core analysis weatherford laboratories capabilities routine core analysis assess core permeability, porosity, fluid saturations, and other important reservoir properties rock and fluid samples provide a direct link to your reservoir or source rock our laboratory analyses can help you ascertain the depositional environment, quantify.

Routine core analysis, as discussed here, will include the measurement of porosity, absolute permeability, and fluid saturations these quantities were defined in chapter 2 however, a brief summary is in order. Once net pay, porosity, and fluid saturations have been entered, analysis lines may be added the initial reservoir pressure will default to the p (extrapolated pressure) of the first analysis line added this default may be overridden manually by typing a value into the initial pressure cell of the parameters dialog box, or a default value. Joint geophysical imaging & logging p-300/esd02-006 project goal the objectives of this research are twofold: first, to investigate the feasibility of simultaneously inverting different types of geophysical data linked through a rock physics model to produce a single, self-consistent earth model parameterized by hydrologic parameters (porosity, fluid, and gas saturations. Porosity fields 3% porosity −core or log analysis bit size, borehole fluid, casing/tubing size cement bond logs −determine the percentage of cement bond fluid properties: water salinity, oil density, gas composition 1 inch salt plug water oil gas measured data triangulation - output 9 water oil gas measured data •sigma and.

Porosity, total shale volume, lithology indicator(s), nmr derived fluid distribution, and formation permeability the mathematical equations describing the petrophysical. Special core analysis (scal) & enhanced oil recovery (eor) laboratory perm’s tomographic imaging and porous media laboratory is on the cutting edge of oil & gas research & development perm inc’s 25,000 sq ft laboratory is located in calgary, alberta, canada. Types of core analysis are presented, and pertinent observations concerning measurement of porosity, permeability and residual fluid saturations are made applications of conventional and special core analysis are briefly discussed. One of the reasons that rato13 and sigma are an optimal combination for this analysis algorithm is that these measurements have sensitivities between different fluid types in a low porosity range typically, a conventional carbon/oxygen (c/o) log is adopted to calculate oil saturation, but its use in a low-porosity formation has limitations.

Of porosity and water saturations, to derive, level-by-level, the following parameters: relative and effective permeabilities to oil, water, and gas in both uninvaded and invaded zones cumulative effective permeabilities to oil, water, gas. Pore volume, reservoir fluid saturations, and, sometimes, formation wet-tability the effect of these changes on rock properties may range from negligible to substantial, depending on characteristics of the formation and property of interest, and should be evaluated in the testing program there are basically two main categories of core analysis. This analysis includes mainly porosity, saturation, net to gross while net to gross, porosity and permeability are readily mapable quantities the saturation needs special considerations to be extrapolated from the well mapping of water saturation away from.

Chapter 1: introduction 11 introduction this course aims to provide an understanding of the behaviour of fluids in reservoirs, and the use of core analysis in the evaluation of reservoir potential it is intended to give the end user of special core analysis data an insight into the experimental techniques used to generate such data and an indication. A method for the measurement of fluid saturations in a core sample by distillation extraction the water in the sample is vaporized by boiling solvent, then condensed and collected in a calibrated trap. Fluid contacts and volume in place, definition of completion intervals etc data from routine core analysis and from supplementary tests and the application of these data area summarized in table 11. Analysis data guided by sedimentological understanding is used as an example of this methodology the analytical model developed was designed to allow calculations of mineralogical components, effective porosity, and fluid saturations using the minimum possible number of log curves after the initial.