Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone Reservoir
Accurate characterization of the micro- and nano-pore radius values in a tight sandstone reservoir is the key work to reasonably evaluate reservoir properties. The previous exploration of pore-stitching methods is mainly based on the morphological extension of similar segments. However, few scholars...
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| Format: | Article |
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MDPI AG
2022-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/5/1642 |
| _version_ | 1797475254784753664 |
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| author | Shiming Zhang Chunlei Yu Junwei Su Dengke Liu |
| author_facet | Shiming Zhang Chunlei Yu Junwei Su Dengke Liu |
| author_sort | Shiming Zhang |
| collection | DOAJ |
| description | Accurate characterization of the micro- and nano-pore radius values in a tight sandstone reservoir is the key work to reasonably evaluate reservoir properties. The previous exploration of pore-stitching methods is mainly based on the morphological extension of similar segments. However, few scholars compare and verify the image and non-image stitching methods, so they cannot clarify the application scope of different pore-stitching methods. In this study, the pore structures of eight selected tight sandstone samples were evaluated using high-pressure mercury injection, nuclear magnetic resonance, scanning electron microscope, and the helium porosity test. Then, the C-value fitting, interpolation fitting, and morphological fitting were used to establish high-pressure mercury injection and Nuclear Magnetic Resonance (NMR) pore distribution curves to evaluate the differences among the micro-nano-scale pore radius values determined by the three fitting methods. Finally, the pore radius distribution is extracted from the binary image of Scanning Electron Microscope (SEM). After correcting the helium porosity data, the application scope of different fitting methods is evaluated by using the mean standard deviation verification method, and the optimal solution of the stitching method of pore radius distribution in each application scope is found. Compared to other studies, this research demonstrated three relatively simple methods for the determination of the full range of pore size distributions, providing a reliable method to evaluate the prerequisites of the range of application. This study provides a new idea for the micro-nano-scale pore radius splicing method of a tight sandstone reservoir, and the research results can provide a reference for the actual reservoir evaluation of oil and gas fields. |
| first_indexed | 2024-03-09T20:41:32Z |
| format | Article |
| id | doaj.art-163fb4f10aff48f7a7d9e853011a539d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T20:41:32Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-163fb4f10aff48f7a7d9e853011a539d2023-11-23T22:55:21ZengMDPI AGEnergies1996-10732022-02-01155164210.3390/en15051642Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone ReservoirShiming Zhang0Chunlei Yu1Junwei Su2Dengke Liu3Exploration and Development Research Institute, Shengli Oilfield, SINOPEC, Dongying 257015, ChinaExploration and Development Research Institute, Shengli Oilfield, SINOPEC, Dongying 257015, ChinaSchool of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaSchool of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaAccurate characterization of the micro- and nano-pore radius values in a tight sandstone reservoir is the key work to reasonably evaluate reservoir properties. The previous exploration of pore-stitching methods is mainly based on the morphological extension of similar segments. However, few scholars compare and verify the image and non-image stitching methods, so they cannot clarify the application scope of different pore-stitching methods. In this study, the pore structures of eight selected tight sandstone samples were evaluated using high-pressure mercury injection, nuclear magnetic resonance, scanning electron microscope, and the helium porosity test. Then, the C-value fitting, interpolation fitting, and morphological fitting were used to establish high-pressure mercury injection and Nuclear Magnetic Resonance (NMR) pore distribution curves to evaluate the differences among the micro-nano-scale pore radius values determined by the three fitting methods. Finally, the pore radius distribution is extracted from the binary image of Scanning Electron Microscope (SEM). After correcting the helium porosity data, the application scope of different fitting methods is evaluated by using the mean standard deviation verification method, and the optimal solution of the stitching method of pore radius distribution in each application scope is found. Compared to other studies, this research demonstrated three relatively simple methods for the determination of the full range of pore size distributions, providing a reliable method to evaluate the prerequisites of the range of application. This study provides a new idea for the micro-nano-scale pore radius splicing method of a tight sandstone reservoir, and the research results can provide a reference for the actual reservoir evaluation of oil and gas fields.https://www.mdpi.com/1996-1073/15/5/1642tight sandstonemicro-nano-scale poresstitching methodC-value fittingimage and non-image method comparison and verification |
| spellingShingle | Shiming Zhang Chunlei Yu Junwei Su Dengke Liu Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone Reservoir Energies tight sandstone micro-nano-scale pores stitching method C-value fitting image and non-image method comparison and verification |
| title | Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone Reservoir |
| title_full | Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone Reservoir |
| title_fullStr | Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone Reservoir |
| title_full_unstemmed | Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone Reservoir |
| title_short | Splicing Method of Micro-Nano-Scale Pore Radius Distribution in Tight Sandstone Reservoir |
| title_sort | splicing method of micro nano scale pore radius distribution in tight sandstone reservoir |
| topic | tight sandstone micro-nano-scale pores stitching method C-value fitting image and non-image method comparison and verification |
| url | https://www.mdpi.com/1996-1073/15/5/1642 |
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