Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusion
As one of the unconventional oil and gas resources, tight oil is of great development prospect all over the world. The characterization of tight reservoir has important guiding significance for overcoming the problems in exploration as well as improving the development effect. As one of the characte...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-02-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2022-0186 |
| _version_ | 1797848620751388672 |
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| author | Kang Hao Li Guanghui Gao Jian |
| author_facet | Kang Hao Li Guanghui Gao Jian |
| author_sort | Kang Hao |
| collection | DOAJ |
| description | As one of the unconventional oil and gas resources, tight oil is of great development prospect all over the world. The characterization of tight reservoir has important guiding significance for overcoming the problems in exploration as well as improving the development effect. As one of the characteristics of reservoir cores, the specific surface area is very important for the characterization of tight reservoirs. In this study, based on mercury injection data of tight reservoir core from Changqing Oilfield, through the establishment of equal diameter pore model, the specific surface area of pores corresponding to different radii is calculated, respectively, and the overall specific surface area of the core is obtained. Through the comprehensive evaluation of the mercury injection data and the calculation results, it is found that the pores with the medium radius (0.009–0.178 μm) have the greatest contribution to the pore volume, followed by the pores with smaller radius (0.004–0.007 μm), and the pores with larger radius (0.268–53.835 μm) have the least contribution to the pore volume. However, the pores with smaller radius (0.004–0.089 μm) have the greatest contribution to the specific surface area, followed by the pore with larger radius (0.133–6.666 μm), and the specific surface area of individual pores in the middle range (8.917 μm) has the least contribution. Therefore, the adsorption loss of surfactant and so on must be considered in the process of tight oil development. In the development process, a series of main technologies such as fracturing, new water/gas injection, and horizontal well development should be explored. Through the overall design and scale implementation of reservoir scale, the investment cost of unit-producing reserves can be effectively reduced, and ultimately, the maximum benefit of tight oil development can be realized. |
| first_indexed | 2024-04-09T18:30:28Z |
| format | Article |
| id | doaj.art-0f2336a32e084727bd89aa52a639670b |
| institution | Directory Open Access Journal |
| issn | 2191-0359 |
| language | English |
| last_indexed | 2024-04-09T18:30:28Z |
| publishDate | 2023-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-0f2336a32e084727bd89aa52a639670b2023-04-11T17:07:19ZengDe GruyterScience and Engineering of Composite Materials2191-03592023-02-013014697710.1515/secm-2022-0186Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusionKang Hao0Li Guanghui1Gao Jian2College of Engineering, Polytechnic Institute, Hebei Normal University, Shijiazhuang, ChinaSeventh Oil Production Plant of Changqing Oil Field, PetroChina, Xi’an, ChinaState Key Laboratory of Enhanced Oil Recovery, PetroChina, Beijing, ChinaAs one of the unconventional oil and gas resources, tight oil is of great development prospect all over the world. The characterization of tight reservoir has important guiding significance for overcoming the problems in exploration as well as improving the development effect. As one of the characteristics of reservoir cores, the specific surface area is very important for the characterization of tight reservoirs. In this study, based on mercury injection data of tight reservoir core from Changqing Oilfield, through the establishment of equal diameter pore model, the specific surface area of pores corresponding to different radii is calculated, respectively, and the overall specific surface area of the core is obtained. Through the comprehensive evaluation of the mercury injection data and the calculation results, it is found that the pores with the medium radius (0.009–0.178 μm) have the greatest contribution to the pore volume, followed by the pores with smaller radius (0.004–0.007 μm), and the pores with larger radius (0.268–53.835 μm) have the least contribution to the pore volume. However, the pores with smaller radius (0.004–0.089 μm) have the greatest contribution to the specific surface area, followed by the pore with larger radius (0.133–6.666 μm), and the specific surface area of individual pores in the middle range (8.917 μm) has the least contribution. Therefore, the adsorption loss of surfactant and so on must be considered in the process of tight oil development. In the development process, a series of main technologies such as fracturing, new water/gas injection, and horizontal well development should be explored. Through the overall design and scale implementation of reservoir scale, the investment cost of unit-producing reserves can be effectively reduced, and ultimately, the maximum benefit of tight oil development can be realized.https://doi.org/10.1515/secm-2022-0186reservoir characterizationcore analysismercury intrusiontight oilspecific surface area |
| spellingShingle | Kang Hao Li Guanghui Gao Jian Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusion Science and Engineering of Composite Materials reservoir characterization core analysis mercury intrusion tight oil specific surface area |
| title | Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusion |
| title_full | Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusion |
| title_fullStr | Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusion |
| title_full_unstemmed | Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusion |
| title_short | Calculation of specific surface area for tight rock characterization through high-pressure mercury intrusion |
| title_sort | calculation of specific surface area for tight rock characterization through high pressure mercury intrusion |
| topic | reservoir characterization core analysis mercury intrusion tight oil specific surface area |
| url | https://doi.org/10.1515/secm-2022-0186 |
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