.... This paper investigates the water uptake by the Alberta coal and its wettability alteration due to CO 2 injection using low-field nuclear magnetic resonance (NMR). Low-field NMR is a technique used in logging and in the analysis of fluids contained in reservoir rocks. It measures the hydrogen density...

... Abstract Having knowledge of oil viscosity variation within reservoirs would be of considerable benefit when producing from heavy oil fields. Previous work has demonstrated that low field NMR bench top instruments can be used to perform measurements of in-situ viscosity. Ideally...

... Abstract The following is the presentation of two field examples of NMR logs in carbonate reservoirs with low porosity and permeability. The wells were drilled with WBM in Devonian (D2-D3) carbonate sequences at Orenburg district (Russia). Conventional open-hole logs fail to recognize pay...

... leads to incorrect descriptions of the reservoir properties. Low field nuclear magnetic resonance (NMR) is an emerging technology that shows great promise in rock characterization. Previous results in the literature give disparaging accounts of the applicability of NMR in carbonate rock characterization...

... to produce. In these reservoirs, oil viscosity is a vital piece of information that will have great bearing on the chosen method of recovery. Prediction of in situ viscosity with a logging tool can be benefitial in reservoir characterization and exploitation design. Low field NMR is a technology that has...

... Abstract A new interpretive algorithm has been developed for bitumen spectra analysis in tar sands. This algorithm utilizes Low Field NMR method for measurements. With the use of appropriate basic components spectra database the algorithm extracts information on bitumen contents, immovable...

... Abstract We have developed a new on line water cut meter using low field Nuclear Magnetic Resonance (NMR) technology. This instrument is designed for use on heavy oil systems where conventional instruments experience difficulties. We describe the process of developing and implementing...

... of severity. Conventional flow measuring devices are capable of measuring oil and water streams when they are segregated but they fail when oil-in-water or water-in-oil emulsions form. Conventional methods are also not reliable when there are solids flowing in the stream. Low field NMR relaxometry...