{"title":"沉积岩超临界二氧化碳压裂实验研究综述","authors":"Bowen ZHENG, Shengwen QI, Wei LU, Songfeng GUO, Zan WANG, Xin YU, Yan ZHANG","doi":"10.1111/1755-6724.15085","DOIUrl":null,"url":null,"abstract":"<p>Supercritical carbon dioxide (ScCO<sub>2</sub>) fracturing has great advantages and prospects in both shale gas exploitation and CO<sub>2</sub> storage. This paper reviews current laboratory experimental methods and results for sedimentary rocks fractured by ScCO<sub>2</sub>. The breakdown pressure, fracture parameters, mineral composition, bedding plane angle and permeability are discussed. We also compare the differences between sedimentary rock and granite fractured by ScCO<sub>2</sub>, ultimately noting problems and suggesting solutions and strategies for the future. The analysis found that the breakdown pressure of ScCO<sub>2</sub> was reduced 6.52%–52.31% compared with that of using water. ScCO<sub>2</sub> tends to produce a complex fracture morphology with significantly higher permeability. When compared with water, the fracture aperture of ScCO<sub>2</sub> was decreased by 4.10%–72.33%, the tortuosity of ScCO<sub>2</sub> was increased by 5.41%–70.98% and the fractal dimension of ScCO<sub>2</sub> was increased by 4.55%–8.41%. The breakdown pressure of sandstone is more sensitive to the nature of the fracturing fluid, but fracture aperture is less sensitive to fracturing fluid than for shale and coal. Compared with granite, the tortuosity of sedimentary rock is more sensitive to the fracturing fluid and the fracture fractal dimension is less sensitive to the fracturing fluid. Existing research shows that ScCO<sub>2</sub> has the advantages of low breakdown pressure, good fracture creation and environmental protection. It is recommended that research be conducted in terms of sample terms, experimental conditions, effectiveness evaluation and theoretical derivation in order to promote the application of ScCO<sub>2</sub> reformed reservoirs in the future.</p>","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2023-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental Research on Supercritical Carbon Dioxide Fracturing of Sedimentary Rock: A Critical Review\",\"authors\":\"Bowen ZHENG, Shengwen QI, Wei LU, Songfeng GUO, Zan WANG, Xin YU, Yan ZHANG\",\"doi\":\"10.1111/1755-6724.15085\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Supercritical carbon dioxide (ScCO<sub>2</sub>) fracturing has great advantages and prospects in both shale gas exploitation and CO<sub>2</sub> storage. This paper reviews current laboratory experimental methods and results for sedimentary rocks fractured by ScCO<sub>2</sub>. The breakdown pressure, fracture parameters, mineral composition, bedding plane angle and permeability are discussed. We also compare the differences between sedimentary rock and granite fractured by ScCO<sub>2</sub>, ultimately noting problems and suggesting solutions and strategies for the future. The analysis found that the breakdown pressure of ScCO<sub>2</sub> was reduced 6.52%–52.31% compared with that of using water. ScCO<sub>2</sub> tends to produce a complex fracture morphology with significantly higher permeability. When compared with water, the fracture aperture of ScCO<sub>2</sub> was decreased by 4.10%–72.33%, the tortuosity of ScCO<sub>2</sub> was increased by 5.41%–70.98% and the fractal dimension of ScCO<sub>2</sub> was increased by 4.55%–8.41%. The breakdown pressure of sandstone is more sensitive to the nature of the fracturing fluid, but fracture aperture is less sensitive to fracturing fluid than for shale and coal. Compared with granite, the tortuosity of sedimentary rock is more sensitive to the fracturing fluid and the fracture fractal dimension is less sensitive to the fracturing fluid. Existing research shows that ScCO<sub>2</sub> has the advantages of low breakdown pressure, good fracture creation and environmental protection. It is recommended that research be conducted in terms of sample terms, experimental conditions, effectiveness evaluation and theoretical derivation in order to promote the application of ScCO<sub>2</sub> reformed reservoirs in the future.</p>\",\"PeriodicalId\":7095,\"journal\":{\"name\":\"Acta Geologica Sinica ‐ English Edition\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2023-06-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Geologica Sinica ‐ English Edition\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/1755-6724.15085\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GEOSCIENCES, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Geologica Sinica ‐ English Edition","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/1755-6724.15085","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
Experimental Research on Supercritical Carbon Dioxide Fracturing of Sedimentary Rock: A Critical Review
Supercritical carbon dioxide (ScCO2) fracturing has great advantages and prospects in both shale gas exploitation and CO2 storage. This paper reviews current laboratory experimental methods and results for sedimentary rocks fractured by ScCO2. The breakdown pressure, fracture parameters, mineral composition, bedding plane angle and permeability are discussed. We also compare the differences between sedimentary rock and granite fractured by ScCO2, ultimately noting problems and suggesting solutions and strategies for the future. The analysis found that the breakdown pressure of ScCO2 was reduced 6.52%–52.31% compared with that of using water. ScCO2 tends to produce a complex fracture morphology with significantly higher permeability. When compared with water, the fracture aperture of ScCO2 was decreased by 4.10%–72.33%, the tortuosity of ScCO2 was increased by 5.41%–70.98% and the fractal dimension of ScCO2 was increased by 4.55%–8.41%. The breakdown pressure of sandstone is more sensitive to the nature of the fracturing fluid, but fracture aperture is less sensitive to fracturing fluid than for shale and coal. Compared with granite, the tortuosity of sedimentary rock is more sensitive to the fracturing fluid and the fracture fractal dimension is less sensitive to the fracturing fluid. Existing research shows that ScCO2 has the advantages of low breakdown pressure, good fracture creation and environmental protection. It is recommended that research be conducted in terms of sample terms, experimental conditions, effectiveness evaluation and theoretical derivation in order to promote the application of ScCO2 reformed reservoirs in the future.
期刊介绍:
Acta Geologica Sinica mainly reports the latest and most important achievements in the theoretical and basic research in geological sciences, together with new technologies, in China. Papers published involve various aspects of research concerning geosciences and related disciplines, such as stratigraphy, palaeontology, origin and history of the Earth, structural geology, tectonics, mineralogy, petrology, geochemistry, geophysics, geology of mineral deposits, hydrogeology, engineering geology, environmental geology, regional geology and new theories and technologies of geological exploration.