Determination of Natural Fracture Porosity Using NMR

Veselinović, Dragan; Green, Derrick; Dick, Mike

doi:10.15530/urtec-2016-2447768

Cited by 9 publications

(2 citation statements)

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“…The signal’s relaxation time ( T 2 ) is closely related to the pore size of the medium, where larger pore sizes correspond to longer T 2 . This fact can be utilized to quantify the residual oil distribution in the different pores. − …”

Section: Pore-scale Investigation Techniquesmentioning

confidence: 99%

Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

et al. 2022

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Chemical-enhanced oil recovery (cEOR) is a class of techniques commonly used to extract hydrocarbon fluids from reservoir rocks beyond conventional waterflooding. Surfactants are among the chemical agents employed in a cEOR process, as they aid in enhancing oil recovery by lowering the oil–water interfacial tension (IFT) and altering the rock wettability toward less oil-wet conditions. Understanding the flow characteristics and mechanisms involved during surfactant flooding helps improve the performance of injected surfactants and results in higher oil recovery. The objective of this review is to outline the recent applications of the different methods employed to understand the behavior and mechanisms involved during surfactant-enhanced oil recovery. The review begins with a general background highlighting the basic characteristics of surfactants and the main mechanisms by which they exert their influence. Recent studies conducted to investigate the oil recovery performance through different methods are then presented, including traditional coreflooding experiments, microfluidics studies, and oil recovery through sand packs. The methodology of the analysis and the interpretation of the data obtained from the different oil recovery tests, including oil recovery factor, pressure data, and relative permeability, are also described. Pore-scale analysis and imaging methods including nuclear magnetic resonance (NMR), magnetic resonance imaging (MRI), and X-ray medical and microcomputed tomography (μCT) scanning and their applicability in assessing the recovery performance are described. Finally, a few examples of field monitoring methods for surfactant flooding are highlighted. This review provides knowledge of the different multiscale evaluation methods and their applicability during surfactant flooding.

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Section: Pore-scale Investigation Techniquesmentioning

confidence: 99%

Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

et al. 2022

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“…However, NMR logging while drilling (NMR-LWD) tools, which started appearing in the oil/gas industry in the early 2000s [ 89 , 90 , 91 , 92 , 93 , 94 ], could determine and identify different fluid phases and their dynamics in geological formations in real-time, while drilling, thus saving time and reducing the cost in a drilling operation. NMR-LWD is rapidly becoming an important logging tool in the oil/gas industry [ 95 ] and more recent works on NMR [ 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 ] continue to drive advancements in NMR-LWD tools to provide more accurate and better characterization of geological formations [ 104 , 105 , 106 , 107 , 108 , 109 ].…”

Section: Nuclear Magnetic Resonance (Nmr)mentioning

confidence: 99%

Downhole Applications of Magnetic Sensors

Gooneratne

Moellendick

2017

Sensors

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In this paper we present a review of the application of two types of magnetic sensors—fluxgate magnetometers and nuclear magnetic resonance (NMR) sensors—in the oil/gas industry. These magnetic sensors play a critical role in drilling wells safely, accurately and efficiently into a target reservoir zone by providing directional data of the well and acquiring information about the surrounding geological formations. Research into magnetic sensors for oil/gas drilling has not been explored by researchers to the same extent as other applications, such as biomedical, magnetic storage and automotive/aerospace applications. Therefore, this paper aims to serve as an opportunity for researchers to truly understand how magnetic sensors can be used in a downhole environment and to provide fertile ground for research and development in this area. A look ahead, discussing other magnetic sensor technologies that can potentially be used in the oil/gas industry is presented, and what is still needed in order deploy them in the field is also addressed.

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Effect of hydrocarbon on evaluating formation pore structure using nuclear magnetic resonance (NMR) logging

Xiao

Mao

et al. 2018

Fuel

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Determination of Natural Fracture Porosity Using NMR

Cited by 9 publications

References 0 publications

Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

Oil Recovery Performance by Surfactant Flooding: A Perspective on Multiscale Evaluation Methods

Downhole Applications of Magnetic Sensors

Effect of hydrocarbon on evaluating formation pore structure using nuclear magnetic resonance (NMR) logging

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