... well logging viscosity Upstream Oil & Gas porosity carbonate bitumen interpretation spwla 1st liquid hydrocarbon regional symposium pore space log analysis total porosity tar zone hydrocarbon deficit porosity reservoir resistivity petrophysicist resonance SPWLA 1st Annual...

... ABSTRACT Recent developments and innovations in LWD (Logging While Drilling) technologies have proven to be indispensable for facilitating precise borehole placement as well as enhancing complex reservoir evaluation. The uses of real-time azimuthal images and directional deep resistivity (DDR...

... capture spectroscopy and formation sigma in addition to the conventional "triple-combo" measurements of density, neutron and resistivity, was applied in a very mature field and has permitted: Improved formation lithology evaluation through the availability of elemental capture spectroscopy. Porosity...

... to low net-to-gross (NTG) with sands below the resolution of traditional logging tools and low resistivity pay sands due the presence of shale-laminations. An interpretation strategy for hydrocarbon identification has been developed using the Thomas-Stieber approach. The main outputs of this model...

... specialized sensor conveyance techniques necessary. This surveillance paradigm has recently changed with the introduction of cased hole resistivity measurements. The ability to measure formation resistivity directly through casing adds a new dimension to water saturation measurement deeper into the formation...

... ABSTRACT With the development of the Symmetrical Anisotropic Theory On Resistivity Interpretation (SATORI) in the late nineties, a generic class of saturation models became available for the determination of hydrocarbon saturations from resistivity logs using Effective Medium theory. From...

... throughout the reservoir. On a different scale, well geometries and reservoir morphologies can make resistivity measurements for fluid evaluation misleading. Moreover, an ultra-mature environment with secondary recovery development schemes, varying oil properties, heavy oil deposits, and a complex oil...

... ABSTRACT Low Resistivity Pay has for some time been recognized as one of the challenges in Carbonate Petrophysics. Carbonate rocks are characterized by their complex and heterogeneous pore structures and the associated difficulties in determining accurate formation hydrocarbon saturations...

... resonance was used to better define the free fluid portion of the reservoir, and to delineate permeable sections. Oil base mud imaging was utilized to characterize the bedding and resistivity anisotropy measurements were integrated using standard published techniques that led to a better evaluation...

... is not of sufficient quality to derive accurate porosity and clay volume in the lower porosity sands, resulting in bypassed pay zones. A fit for purpose suite of cased hole logs consisting of cased hole formation resistivity and epithermal neutron porosity, combined with a fast wellsite interpretation product has...

... ABSTRACT With today's data communication technology to transfer LWD data into our offices, Geologists and Reservoir Engineers can make their decisions live. The real-time acquisition of three LWD images, Resistivity Density-Gamma Ray, with high data rate telemetry and transfer...