...Copyright 2014, held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting authors. This paper was prepared for presentation at the SPWLA 55th Annual Logging Symposium held in Abu Dhabi, United Arab Emirates, May 18-22, 2014. ABSTRACT Log analysis workflows...

... by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting authors. This paper was prepared for presentation at the SPWLA 55th Annual Logging Symposium held in Abu Dhabi, United Arab Emirates, May 18-22, 2014. ABSTRACT Twenty years ago, at the end of 1993, the SPWLA Data Quality Topical...

.... Conferences were held under various auspices, some useful and others not so useful. In late 1958, a small group of log analysts in Tulsa decided it was time to form a larger-scale log analysis society with an annual Symposium along the same lines as other discipline-specific societies such as the SPE, AAPG...

... analysis well logging Viscosity Index log analyst alkane viscosity GOR diffusion coefficient correlation coefficient Upstream Oil & Gas diffusivity NMR crude oil Symposium interaction molecule Vinegar ambient pressure relaxation time gas-oil ratio THE LIMITS OF FLUID PROPERTY...

... Upstream Oil & Gas deposition well logging log analysis log analyst composition siderite Symposium reservoir information sandstone bazenov formation interpretation spwla 44 porosity application fragment lithology shale NMR siberia basin permeability SPWLA 44 th Annual...

... well logging impedance resistance high frequency dispersion Upstream Oil & Gas log analyst sandstone saturation complex resistivity log analysis current electrode resistivity index curve Symposium Fontainebleau sandstone electrode frequency drainage kHz wettability...

... layering and wellbore axis is large, array induction measurements exhibit erratic spikes, misleading curve separations, and inaccurate resistivity values, preventing log analysts from accurately evaluating invasion and formation resistivities. To address these problems, various correction methods...

... ABSTRACT Modern log analysts confronted with electrical survey (ES) logs often tend to use the normal curves because they understand them much better than the lateral tool. Even depth-matching of the lateral response proves to be a challenging task. The lateral tool is valuable because...

... recorded in AGLP wells, allowing the definitions of its advantages and limitations. log analysis Upstream Oil & Gas anomaly well logging lqc system Artificial Intelligence lqc form calibration anomaly log data Symposium knowledge management expert system log analyst information...

... that there is a relationship between permeability and some of the variables wmmonly used in bg analysis. In the past, log analysts have tried to estimate permeabilitybyrelatingthevolumeofbcmdwater,and the total pore volume to the surface to volume ratio (S/V) in the pore space. Since there is a relation behveenir...

... the interpretation models from well logs: graphical crossplotting and mathematic statistical methods ( Rogers et al, 1992). In the f3rst approach log analysts got the lithological inforamtion by viewing the results of a series of crossplots made from two or three logs, and selected appropriate interpre- tation...

...SPWLA 35th Annual Logging Symposium, June 19-22,1994 SPWLA COMPUTER INDEX Stephen Prensky: U.S. Geological Survey, Denver, CO Barbara Anderson: Schlumberger-Doll Research, Ridgef ield, CT ABSTRACT The last index of SPWLA papers, based on first authors, was published in The Log Analyst in 1986...

... wave resistivity tool log analysis signal processing investigation sensitivity function resistivity Upstream Oil & Gas contour Symposium Rytov approximation resistivity measurement well logging log analyst algorithm transmitter invasion phase measurement attenuation measurement...

..., and preprocessor The user interface is used to input control parameters and curve data. Rules derived from charts, empirical models, and log analysts' expertise are contained in the knowledge base. The inference engine controls the reasoning process and computes oil and/or gas slip velocities until the predefined...

... resonance tools to measure the composition, concentration, and distribution of reservoir fluids should allow a better evaluation, and possibly even quantitative calculation, of reservoir pressure. well logging pore pressure spwla 33rd Upstream Oil & Gas log analyst recognition circulation...

... log analysis compressibility spwla 33rd geophysics saturation relation formation factor coefficient determination well logging log analyst formation factor parameter Symposium Upstream Oil & Gas exponent porosity University interpretation equation resistivity cementation...

... tool response in actual logging situations. In order to better integrate this improved modeling capability wit h everyday log interpretation, we have made some of our most frequently used electromagnetic modeling codes available for use by both our own and oil company log analysts. These codes...

... of the center-bed readings. log analysis groove information Upstream Oil & Gas resistive bed Modeling & Simulation Thickness induction tool Anderson separation Computer Modeling Symposium resistivity field log interpretation Induction log well logging log analyst oscillation...

... became aware that the extent of environmental effects on conventional induction tools was not widely known. In order to alert log analysts to these problem areas of induction interpretation, several examples of unexpected, or strange environmental effects are examined in this paper. In high resistivity...

... sonic logs. This technique is much faster than the conven- tional method of threshold detection followed by correlation (Willis and Toks6zj 1983). By stacking the wavetrains from multiple receiver tools along lines of con- stant traveltime, traveltime stacking provides the log analyst with a concise...