Pulsed Laser Photothermal Detuning Technique

Honggang, 郝宏刚 Hao; Bincheng, 李斌成 Li; Mingqiang, 刘明强 Liu

doi:10.3788/aos20082810.1942

Cited by 2 publications

(1 citation statement)

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“…The studies showed that the influence of microscopic character on porosity, permeability, and oil displacement efficiency in low permeability reservoir is more complex [5][6][7][8][9] than that of conventional reservoir. In low permeability oilfield, oil displacement efficiency varied according to different origin pore structure.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Micro-Character on Macroscopic Properties in Low Permeability Reservoir

Zhang

Lei

2014

AMM

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The relation of microscopic features and the macroscopic properties such as permeability, porous and oil displacement efficiency in low permeability reservoir is much more complex than in conventional reservoir. Understanding the microscopic features and its influence law to macroscopic properties in low permeability reservoir is key to tapping remain oil. In this paper, the microscopic and macroscopic features and their relationship is studied. Studies suggest that in low permeability reservoir the main reservoir spaces include micro cracks, intergranular pore, intragranular pore and intracrystalline pore. The contribution of micro-cracks to porosity is not big, but its influence to permeability cannot be ignored. Porosity mainly effect by the development degree of pore throat, the bigger radius of pore throats are, the porosity is higher. The permeability and mercury efficiency are affected by feature structure coefficient, which reflect the characteristics of connectivity, it showed a positive correlation between the Coefficient and permeability, but Mercury efficiency and the Coefficient have positive correlation in mesopore reservoir, they have Negative Correlation in low or super-low porosity.

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Section: Introductionmentioning

confidence: 99%

The Influence of Micro-Character on Macroscopic Properties in Low Permeability Reservoir

Zhang

Lei

2014

AMM

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A simple method of extracting multiple-information with diffraction enhanced imaging

Zhao¹,

Zhang²,

Ye³

et al. 2013

Acta Phys. Sin.

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Sample information-extracting with diffraction enhanced imaging (DEI) has been one of the interesting areas for many years. Using cosine curve to fit rocking curve in DEI, we deduce the equations described by cosine functions for peak-position image, low- and high-angle image. The analytical expressions of absorption image, refractive angle image and scattering image are also developed. Then a simple method is proposed for sample information-extracting with DEI based on those deductions. This method can extract the absorption information, refractive angle information and scattering information of a sample using only three images, i.e. one peak-position, one low-angle image and on high-angle image, resulting in simple experimental process and low radiation dose introduced to sample by imaging process. The experiments are carried out on a standard sample and a real biological sample. For comparison, experiments are also carried out on the same two samples using the common multiple-image radiography (MIR) method, in which at least seven images should be used to extract sample information. Experimental results show that our new method does extract sample information successfully, and the results from our new method are comparable to those from the MIR method.

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Pulsed Laser Photothermal Detuning Technique

Cited by 2 publications

References 0 publications

The Influence of Micro-Character on Macroscopic Properties in Low Permeability Reservoir

The Influence of Micro-Character on Macroscopic Properties in Low Permeability Reservoir

A simple method of extracting multiple-information with diffraction enhanced imaging

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