PDF
Full
Outline
In order to solve the problem of spatial distribution of fracture system at the end of methane leakage system, based on the high-resolution three-dimensional seismic data in the north of South China Sea, the spatial structure and distribution characteristics of fractures in bottom simulating reflector (BSR) distribution area are described by using visualization and coherent body technology. The geological genetic types of fractures are described. The relationship between fractures and other types of transport systems on methane gas accumulation is discussed. The fractures in the upper part of BSR interface are far less than those in the lower part of BSR interface, which makes the methane gas supply larger than that in the process of hydrate accumulation. It has a general indicating role in studying hydrate accumulation and detecting methane gas leakage. According to the development scale of fractures, the study area can roughly identify four types of fractures, they are each short fractures, long fractures, fracture bundles, and fracture groups, which enhance the leakage capacity of fluids in turn. These fractures often coexist in multiple types in the stratum, or form a leakage system together with other geological structures. These results and understandings are of great significance to improve the gas hydrate accumulation model and mechanism of methane leakage system in deep-water basin.
PDF
116
51
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
