... determination yet to be untangled in complex lithologies, especially in carbonates. Several researchers have tried to deconvolute the water distribution in composite formations by formulating empirical correlations that depend on log derived data which is not a very precise representation and hence no consensus...

... hard, based on UCS, depth, and lithology. Statistical and sensitivity analysis was conducted, developing correlation coefficients (CC) to represent relationships between rock hardness, ROP, and MW from field data. This methodology combines data from mud logging, daily drilling reports, and geological...

... Abstract The Buah formation has gained increasing interest in the search for new exploration plays in the Sultanate of Oman. Significant hydrocarbon accumulation has been discovered in the Buah recently. The Buah formation is complex in terms of lithology, pore structure, and the coexistence...

... The mineralogical data obtained allows for recognition of lithologies, mineral correlation, key elemental composition, definition of formations and stratigraphic sequences between wells. Moreover, pore textural data, porosity, the pore size distribution and pore aspect ratio allow for a better...

... program in Exploration, Delineation and special Evaluation wells for Saudi Aramco. Elemental Spectroscopy data has proved critical when evaluating complex lithology formations in both siliciclastic and carbonate rocks to produce an accurate mineralogy analysis, resulting in good understanding...

... well logging Upstream Oil & Gas log analysis ACA rock analysis major element petrophysical evaluation porosity interpretation Elemental data resolution gamma ray application resistivity correlation lithology trace element mineral dry rock interpretation complex lithology...

... include: measuring actual porosity in the core laboratory, Computerized Tomography (CT) scan, neutron-density logging, sonic tools and Nuclear Magnetic Resonance NMR logging tools. The NMR logging is unique compared to all other methods since it is independent of the reservoir lithology. It can be used...

... for petrophysical and Image log Analysis, thus converting it into a powerful tool for rock property estimation for a variety of rock types and specifications. As a matter of fact, because rocks of the same lithology have different characterization due to different composition and depositional environments...

.... In addition, changes in depositional and digenetic environments provide for a complex geology that poses challenges in well placement. A new technique has been developed that utilizes LWD data and neural network analysis to determine key geological and petrophysical parameters such as lithology, permeability...

... reservoir has intercalating sand shale sequence with the upper part having mixed lithology. Co-existing together are argillaceous glauconitic sandstones, calcite, dolomite and anhydrite with pyrite and siderite. With increasing demand of oil in the world, it has become necessary to improve oil production...