A new method for precisely measuring core porosity with high efficiency and no destruction

被引：0

作者：

Jia N. ^{[1
,2
]}

Lü W. ^{[2
,3
]}

Chang T. ^{[4
]}

Li T. ^{[2
]}

Yang J. ^{[2
]}

Ma D. ^{[2
]}

Cheng L. ^{[1
]}

Liu Q. ^{[2
]}

Yang S. ^{[2
]}

机构：

[1] College of Petroleum Engineering, China University of Petroleum, Beijing

[2] State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration and Development, Beijing

[3] School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210046, Jiangsu

[4] Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay, 834000, Xinjiang

来源：

Shiyou Xuebao/Acta Petrolei Sinica | 2018年 / 39卷 / 07期

关键词：

Core; Kerogen; Micro-image mosaic; Micro-nano CT image; Porosity;

D O I：

10.7623/syxb201807009

中图分类号：

学科分类号：

摘要：

Comprehensively using micro-nano CT imaging technology and micro-image mosaic technology, the micro-nano pores in the kerogen are identified to precisely measure core porosity. Firstly, the micro-nano CT images are used to identify the macroscopic connected porosity, isolated porosity and the volumetric fraction of kerogen area (but unable to identify kerogen pores). Then, using SEM or FIBSEM images, the ultra-high resolution imaging is conducted to the kerogen area in the micro-nano CT images, so as to identify the pore space of kerogen. Meanwhile, nine-cell method is used to measure the representative sample points for calculating the mean porosity of kerogen. Finally, the kerogen porosity information obtained under the ultra-high resolution is sent back to the kerogen area in the micro-nano CT image, so as to correct the total macroscopic porosity of micro-nano CT image. This measurement is convenient for operation with no substantial destruction to cores. © 2018, Editorial Office of ACTA PETROLEI SINICA. All right reserved.

引用

页码：824 / 828and844

共 20 条

[1] Xu C., Sun J., Dong X., Et al., A new pore pressure logging prediction method in shale gas reservoirs, Acta Petrolei Sinica, 38, 6, pp. 666-676, (2017)
[2] Gao S., Hu Z., Liu H., Et al., Microscopic pore characteristics of different lithological reservoirs, Acta Petrolei Sinica, 37, 2, pp. 248-256, (2016)
[3] Wu S., Xiong Q., Hydrocarbon Reservoir Geology, pp. 113-122, (1998)
[4] Zhu R., Wu S., Su L., Et al., Problems and future works of porous texture characterization of tight reservoirs in China, Acta Petrolei Sinica, 37, 11, pp. 1323-1336, (2016)
[5] Ji W., Song Y., Jiang Z., Et al., Micro-nano pore structure characteristics and its control factors of shale in Longmaxi Formation, southeastern Sichuan Basin, Acta Petrolei Sinica, 37, 2, pp. 182-195, (2016)
[6] Ehrenberg S.N., Eberli G.P., Keramati M., Et al., Porosity-permeability relationships in interlayered limestone-dolostone reservoirs, AAPG Bulletin, 90, 1, pp. 91-114, (2006)
[7] Koponen A., Kataja M., Timonen J., Permeability and effective porosity of porous media, Physical Review E, 56, 3, pp. 3319-3325, (1997)
[8] Cui X., Bustin A.M.M., Bustin R.M., Measurements of gas permeability and diffusivity of tight reservoir rocks: different approaches and their applications, Geofluids, 9, 3, pp. 208-223, (2009)
[9] Lame O., Bellet D., Di Michiel M., Et al., Bulk observation of metal powder sintering by X-ray synchrotron microtomography, Acta Materialia, 52, 4, pp. 977-984, (2004)
[10] Lowell S., Shields J.E., Thomas M.A., Et al., Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density, (2004)

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