The idea to use automated algorithms to determine geological facies from well logs is not new (see e.g Busch et al. (1987); Rabaute (1998)) but the recent and dramatic increase in research in the field of machine learning makes it a good time to revisit the topic. Following an exercise proposed by Dubois et al. (2007) and Hall (2016) we employ a modern type of deep convolutional network, called...

Abstract Otan-Ile field, located in the transition zone Niger Delta, is characterized by complex structural deformation and faulting which lead to high uncertainties of reservoir properties. These greatly affect exploration development thus require proper characterization. Reservoir characterization requires integration different data such as seismic well log data, are used develop model. There...

Shale oil reservoirs differ from conventional in several aspects, including the sedimentary model, accumulation mechanism, and reservoir characteristics, which pose significant challenges to their exploration development. Therefore, identifying location of optimal spots is crucial for successful development shale reservoirs. Mobility, particularly low-permeability with nano-scale pores, a petro...

Petrophysical heterogeneity in the South Wasson Clear Fork (SWCF) reservoir and other shallow-water platform carbonates in the Permian Basin and elsewhere is composed of a large-scale stratigraphically controlled component and a small-scale poorly correlated component. The large-scale variability exists as a flow-unit scale petrophysical layering that is laterally persistent at interwell scales...

There are two methods for identifying formation interface in oil wells: core analysis, which is a precise approach but costly and time consuming, and well logs analysis, which petrophysists perform, which is subjective and not completely reliable. In this paper, a novel coupled method was proposed to detect the formation interfaces using GR logs. Second approximation level (a2) of GR log gained...

Visualization of subsurface geology is mainly considered as the framework required structure to provide distribution petrophysical properties. The geological model helps understand behavior fluid flow in porous media that affected by heterogeneity reservoir and calculating initial oil place well selecting accurate new location. In this study, a built for Qaiyarah field, tertiary reservoir, rely...

Abstract The thermal neutron porosity is routinely acquired in almost every well. When combined with the density, gamma ray and resistivity logs, basic petrophysical parameters of a reservoir are evaluated. design tool simple, but its interpretation complex affected by formation constituents. most challenging situation occurs when contains elements high absorption probability neutrons. existenc...