Heavy crude oil is known as oil that is highly viscous and of a higher density than that of conventional oil. Sand reservoirs containing heavy oil generally consist of unconsolidated sediments deposited at a shallow burial depth, with high porosity and permeability. In seismic exploration, acoustic impedance inversion is a commonly used tool in reservoir prediction. However, due to the unconsol...

Background: An epidemiological study was carried out on the vector(s) and reservoir(s) of cutaneous leishmaniasis in rural areas of Kalaleh District, Golestan Province during 2006 2007. Methods: Totally 4900 sand flies were collected using sticky papers and were subjected to molecular methods for detection of leishmanial parasite. Results: Phlebotomus papatasi was the common species in outdoor ...

The Sand beds of the Sapele field have been evaluated to ascertain viability for hydrocarbon development using integration structural play and petrophysical indices. Pay sands were delineated quick look approach. A seismic horizon interest was picked a well control measure. reveal three major faults responsible migration entrapment mechanisms which contributed three-way closure in area. Litho-s...

Abstract Estimation of water saturation, S w , in shaly sandstone is an intricate process. The surface conduction clay minerals adds up to the electrolyte pore spaces, thus generating high formation conductivity that overshadows hydrocarbon effect. In each resistivity-based saturation model, key parameter factor, F which typically derived from Archie’s Law. Referring a log–log plot between fact...

Unconventional reservoirs are keys to oil and gas exploration and development, especially shale gas reservoirs. Discriminated shale gas reservoir lithofacies are, in particular, a primary problem in shale gas reservoir engineering. The mineral composition will affect both absorbed and free gas contents, therefore their identification is important. The mineral composition is one part of lithofac...