Jan 18, 2022 · Water saturation (S w) is most often determined from the logging measurement of resistivity and knowledge of porosity, water resistivity, and shale volume. The interpretation …

Ranges of resistivities and thicknesses of different zones are presented in Table 4. It is not possible to distinguish clearly the weathered shale from the fractured shale through the...

Mar 22, 2022 · The resistivity logging results show that high-resistivity layers (> 100 Ω m), medium-resistivity layers (5–100 Ω m) and low-resistivity layers (< 5 Ω m) coexist in marine …

Even small amounts of clay can have a large effect, which is important because most reservoir sands contain some degree of shaliness. Note: The terms clay and shale are used …

Aug 1, 2022 · As the inclination angle (θ) increases from 0° to 90°, the experimental resistivity of shale increases quickly, demonstrating that the shale from the lower Silurian Longmaxi …

Nov 1, 2016 · Revealing the correlation between the pores types and its resistivity as well as polarizability of shale. Present the relationships between electrical properties and brittle/clay …

Nov 1, 2021 · Pay zone resistivity is primarily controlled by reservoir quality (i.e. porosity and shale fraction) and fluid phase (i.e. gas, oil and water saturation). In the investigated wells, the …

Based on logging interpretation data, Yang et al. [29] summarized five key features of low-resistivity shale reservoirs, such as high clay content, high formation-water salinity, high …

Jul 25, 2018 · Shale reservoirs exhibit evolution of resistivity with a noted reversal typically occurring at the wet- to dry-gas transition. This study documents this phenomenon and …

May 1, 2018 · This research focuses on the phase composition of Leningrad fuel shale and its changes on pyrolysis. The main minerals present in the shale are calcite (28%), quartz (25%), …