X‐ray microtomography

Elliott, J. C.; Dover, S. D.

doi:10.1111/j.1365-2818.1982.tb00376.x

Cited by 253 publications

(120 citation statements)

References 5 publications

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“…Moreover, after long-term flooding in reservoir of the Jidong Oilfield, the separation of pore and throat becomes better, and microheterogeneity of reservoir gradually becomes weaker. The rule has not been reported before (Elliott and Dover 1982;Sorbie et al 1989;Lymberopoulos and Payatakes 1992;Xu et al 1999;Fredrich et al 1995;Fredrich 1999;Delerue et al 1999;Lindquist and Venkatarangan 1999;Liang et al 2000;Blunt (2001); Radlinski et al 2002;Siddiqui and Khamees 2004;Coenen et al 2004;Arns et al 2004Arns et al , 2005Knackstedt et al 2006;Al-Kharusi and Blunt 2007;Tomutsa et al 2007;Hou et al 2007;Youssef et al 2008;Dong and Blunt 2009;Mustafa et al 2009;Xu et al 2010;Peng et al 2012;Saurabh et al 2013;Theis et al 2014). …”

Section: D Model Of Pore Networkmentioning

confidence: 93%

“…Since the pore network model was proposed by Fatt (1956aFatt ( , b, c) in 1956, it has been a powerful tool to study microscopic reservoir structure and seepage characteristics. Elliott and Dover (1982), Sorbie et al (1989), Lymberopoulos and Payatakes (1992), Xu et al (1999), Fredrich et al (1995), Fredrich (1999, Delerue et al (1999), Lindquist and Venkatarangan (1999), Liang et al (2000), Blunt (2001), Radlinski et al (2002), Siddiqui and Khamees (2004), Coenen et al (2004), Knackstedt et al (2006), Al-Kharusi and Blunt (2007), Tomutsa et al (2007), Blunt (2009), Peng et al (2012), Saurabh et al (2013), Theis et al (2014), have researched the technologies and algorithms of constructing the digital core and 3D pore network model, and the 3D pore network model has been rapidly developed and widely applied. Among those technologies, the method of constructing 3D pore network model with digital core reconstructed by high-precision X-ray CT scanning is dominant, and it is future direction of researching microstructure of reservoir pore (Hou et al 2007;Arns et al 2004Arns et al , 2005Youssef et al 2008;Mustafa et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Study on microheterogeneity and seepage law of reservoir after long-term water flooding

Hua

Liu

Sun³

2017

J Petrol Explor Prod Technol

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In order to carry out research on variation of microheterogeneity in sandstone reservoir after long-term water flooding in the complex faulted oilfields, the cores are cut from typical wells of main oil layers of two blocks in the Jidong Oilfield, and the experiments of long-term water flooding are conducted. Based on the mercury-injection data at different water cut stages during water flooding and the digital core data reconstructed by X-ray CT scanning, the variation of microheterogeneity of reservoir at different water cut stages during long-term water flooding of core are quantitatively characterized through fractal dimension method and 3D pore network model, and the rule of oil-water seepage at different water cut stages is characterized. The study showed that the middle-high-permeability reservoir has a good fractal structure with fractal dimension between 2 and 3. The large pore has the less fractal dimension, and the better homogeneity and pore structure than the small one. After the cores are washed by long-term water flooding, and as the water cut increases, the fractal dimensions of large and small pore gradually decrease, mean and medium pore diameters increase, the relative sorting coefficient decreases, the distribution probability of throat radius of core generally increases, and the microheterogeneity of reservoir weakens. Moreover, the oil relative permeability curves are almost overlapped, and the water relative permeability curves result in a big difference. Under the same water saturation, as the water cut increases, the fractal dimension decreases, the water relative permeability increases, and the oil-water common seepage points shift to the left.

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Section: D Model Of Pore Networkmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Study on microheterogeneity and seepage law of reservoir after long-term water flooding

Hua

Liu

Sun³

2017

J Petrol Explor Prod Technol

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“…This method was first discussed in the 1980's, using X-ray tubes (Elliott and Dover, 1982;Elliott and Dover, 1985;Sato et al, 1981), gamma-ray sources (Gilboy, 1984;Gilboy et al, 1982) and synchrotron radiation (Bonse et al, 1986;Flannery et al, 1987;Grodzins, 1983) as X-ray source. Due to their low brilliance, gamma-ray sources are rarely used in micro-CT, and throughout the years both synchrotron-based and lab-based (using X-ray tubes) micro-CT have developed rapidly.…”

Section: Towards Micro-ctmentioning

confidence: 99%

High-resolution X-ray computed tomography in geosciences: A review of the current technology and applications

Cnudde

Boone

2013

Earth-Science Reviews

1,266

700

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Please cite this article as: Cnudde, V., Boone, M.N., "High-resolution X-ray computed tomography in geosciences: a review of the current technology and applications", Earth Science Reviews (2013Reviews ( ), doi: 10.1016Reviews ( /j.earscirev.2013 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.A C C E P T E D M A N U S C R I P T AbstractHigh-resolution X-ray Computed Tomography (HRXCT) or micro-CT (µCT) is a frequently used non-destructive 3D imaging and analysis technique for the investigation of internal structures of a large variety of objects, including geomaterials. Although the possibilities of X-ray micro-CT are becoming better appreciated in earth science research, the demands on this technique are also approaching certain physical limitations. As such, there remains a lot of research to be done in order to solve all the technical problems that occur when higher demands are put on the technique. In this paper, a review of the principle, the advantages and limitations of X-ray CT itself are presented, together with an overview of some current applications of micro-CT in geosciences. One of the main advantages of this technique is the fact that it is a non-destructive characterization technique which allows 4D monitoring of internal structural changes at resolutions down to a few hundred nanometers. Limitations of this technique are the operator dependency for the 3D image analysis from the reconstructed data, the discretations effects and possible imaging artefacts. Driven by the technological and computational progress, the technique is continuously growing as an analysis tool in geosciences and is becoming one of the standard techniques, as is shown by the large and still increasing number of publications in this research area. It is foreseen that this number will continue to rise, and micro-CT will become an indispensable technique in the field of geosciences.

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“…Computed tomography is a non-destructive evaluation technique that allows the internal structure of an object to be imaged by reconstructing the spatial distribution of the local linear X-ray absorption coefficients of the materials/phases contained within [26]. In one of the studies [27] a method of theoretical derivation was proposed.…”

Section: Ct Scanningmentioning

confidence: 99%

Effect of using different types of methods for the derivation of elastic modulus of bone - A critical survey

2017

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Abstract. The purpose of this paper is to critically review and address the cause of variation in the values of elastic modulus (E) of bone. Properties used for materials (especially) bones is one of the crucial factors in modeling and simulation experiments with sensitive procedures such as Finite Elements. The values of elastic modulus acquired from secondary databases, literature and online repositories differ in many ways. This is due to an underlying fact that different methods are used for one definite set of species and vice versa. According to a human understanding, this might bar the perceptive of use of elastic modulus in the research when (especially) insightful procedures are in question for example Finite Element Analysis (FEA) of materials with sensitive procedures. The means and the methods, through which the values are obtained, do not follow a standard methodology. Thus, this area needs attention. Despite the advances in technology and state-of-the-art methods in the field of biomechanics and biomedical engineering there is a need to formulate a standard method which can produce reliable set of E-values. Through this paper, we seek to raise an important scientific question as to what systemic methodology should be adapted to achieve a value of elastic modulus that is not only reliable, but reasonable as well. The paper also, focus briefly on the sources of error responsible for this variation and the significance of elastic modulus values in important numerical methods such as Finite Elements (FE).

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X‐ray microtomography

Cited by 253 publications

References 5 publications

Study on microheterogeneity and seepage law of reservoir after long-term water flooding

Study on microheterogeneity and seepage law of reservoir after long-term water flooding

High-resolution X-ray computed tomography in geosciences: A review of the current technology and applications

Effect of using different types of methods for the derivation of elastic modulus of bone - A critical survey

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