... slowness prediction eaton shear slowness poisson coefficient de oliveira geology reservoir characterization puc-rio janeiro carrasco modified warpinski method estimation catholic university ARMA 24-00134 Application of a Modified Warpinski Method for In-Situ Horizontal Stress Prediction...

... log is not acquired in every drilled well. We analyzed the log data of more than 35000 wells in the Williston Basin, and we found that only very few wells had sonic logs. For this reason, several studies attempted to correlate the shear velocity (or slowness) to other easily accessible properties...

... ABSTRACT: A new interpretation workflow to automatically deliver high-resolution dynamic elastic moduli using borehole sonic data is presented. This workflow consists of three new algorithms: a multi-resolution based depth tracking algorithm to avoid mislabeling among the processed slownesses...

... ABSTRACT: Spatial distributions of reservoir and geomechanical properties such as porosity, slowness, and rock moduli are key components of static modelling and production optimization and depend on the shape of variogram models. Incorrect determination of search neighbourhood and anisotropy...

... Reservoir Characterization acoustic emission polarization parallel shear wave slowness perpendicular Upstream Oil & Gas shear wave mapping hydraulic fracture transducer slowness fracture propagation waveform bedding plane ARMA 18-151 Mapping Hydraulic Fracture in Pyrophyllite using Shear...

... workflow to fully characterize the rock mechanical properties of Vaca Muerta formation is proposed. complex reservoir reservoir geomechanics Reservoir Characterization Biot Upstream Oil & Gas correlation variation reservoir temperature experiment slowness coefficient measurement rock...

... of any dipole shear slowness anisotropy. In addition, inversion of the fast- and slow-dipole flexural dispersions observed in thin limestone stringers interbedded in shales yield six of the nine orthorhombic constants. Estimates of C 13 and C 23 provide the key inputs to the poroelastic stress model...

... established. Clusters were determined from a logging suite comprising only gamma ray, compressional slowness, and bulk density in a key exploration well, and this cluster group was applied to several more wells in the study area. Using microseismic data obtained from three of the wells in the study area...

... be either intrinsic or stress induced. Shear anisotropy of formations could be evaluated through both fast and slow shear wave measurements [2]. Subsequently the measured fast and slow shear velocity could be applied to estimate the differential horizontal stresses in vertical borehole, [2-3]. Advanced...

... approaches. In a first step, the algorithm FORmation MEchanics Logging (FORMEL) is fed with synthetic data sets for sandstones and shales to determine the sensitivity of the algorithm for variations in the input data (porosity, compressional slowness, density). The UCS, Young's modulus and bulk modulus...

... in the resistivity log and the sonic log. These lines are compared quantitatively to the original log curves to identify and filter out data points associated with factors that perturb the trend between sonic slowness and resistivity. Techniques used to derive the resistivity baseline (curve smoothing techniques...

... Reservoir Characterization vertical seismic profile anisotropy parameter algorithm log analysis transverse isotropy Upstream Oil & Gas horizontal section compressional anisotropic moduli borehole sonic data slowness well logging deviation moduli anisotropy Gamma dispersion...

.... The travel times of the waves between sources and receivers were used to compute the velocities and to construct a 2D tomographic image of the slowness (the inverse of velocity) and the anisotropy in this region. Velocities in the sidewall and midway to the notch are low and show significant anisotropy...

... nonlinearity Reservoir Characterization plastic state evaluation configuration particle characteristic grid plastic behavior spatial space equation eikonal equation slowness traveltime Rock Mechamcs tn the Nattonal Interest, Elsworth, Ttnucct & Heasley (eds), ¸2001 Swets & Zetthnger Dsse, ISBN...