Abstract
In the petroleum industry, Nuclear Magnetic Resonance (NMR) technology has been applied to numerous applications in the laboratory and for wireline logging, which provides vital information about the petrophysical properties of the reservoirs. The primary purpose of this paper is to evaluate the various applications of the Nuclear Magnetic Resonance technology presently used in conventional and unconventional reservoir systems for formation evaluation purposes in the petroleum industry. Additionally, to better comprehend the type of analysis and information that could be derived from the NMR measurement, a detailed literature review was conducted on the history, theory, and principles of nuclear magnetic resonance. This paper also discussed some standard methods in which NMR technology has been used in the oil and gas industry to estimate reservoir properties such as porosity, permeability, wettability, irreducible water saturation, and irreducible oil saturation. Likewise, it reveals that the borehole and laboratory applications of the NMR measurement have been utilized in both conventional and unconventional reservoir systems to quantify critical parameters like pore size distribution, porosity, and permeability. The application of NMR measurement also gives a better understanding of the interaction between fluids in the reservoirs and the rock properties. This review establishes that the exploration and production of oil in the industry have benefited from NMR technology by effectively enhancing the evaluation of formation and fluid properties in the reservoir.
Highlights
IntroductionNuclear Magnetic Resonance (NMR) well logging application has been used in the study of conventional petroleum formations to detect water content and hydrocarbon and to evaluate key reservoir properties such as porosity, permeability, and pore size distribution [1] [2]
The primary purpose of this paper is to evaluate the various applications of the Nuclear Magnetic Resonance technology presently used in conventional and unconventional reservoir systems for formation evaluation purposes in the petroleum industry
To better comprehend the type of analysis and information that could be derived from the Nuclear Magnetic Resonance (NMR) measurement, a detailed literature review was conducted on the history, theory, and principles of nuclear magnetic resonance
Summary
NMR well logging application has been used in the study of conventional petroleum formations to detect water content and hydrocarbon and to evaluate key reservoir properties such as porosity, permeability, and pore size distribution [1] [2]. In an exploration program, several physical properties of probable reservoirs are measured in the well site, including NMR relaxation times for saturating fluids and possibly their diffusion coefficients. Diffusion coefficients and relaxation times correlate with the rock pores geometry and pore sizes. These techniques are widely used for rock porosity determination and permeability prediction. NMR as developed as one of the best tool for quantifying reservoir properties, fluid properties as well as determining reservoir productivity
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