Hydrostatic Properties of Hydrate-Bearing Sediments in Seafloor Multiphase Flow Zone

• 责任者：Guan Jinan (Guangzhou Institute of Energy Conversion ; Key Laboratory of Renewable Energy and Gas Hydrate ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Liang Deqing
• 刊名：Geoscience
• 出版年：2010
• 卷期：24(5)
• 关键词：天然气水合物 ; gas hydrates ; 油田水 ; oil field water
• 页码：p.965-971
• 图表：4 illus., 1 table, 38 refs.
• 分类号：1003
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

In this paper, a multiphase flow model of hydrate reservoir described the hydrate-water-gas-salt interaction in sediment pores in leakage environment had been established. The evolution of capillary pressure, porosity, relative and intrinsic permeability of sedimentary strata during hydrate forming had been estimated. According to this model the distribution of gas column in Shenhu area of north South China Sea had also been predicted. The results showed that with the continuously hydrate forming and growing in the sediment pores, the gas column would gradually become longer, and at last near the seabed the critical gas column length could achieve its most height to be about 0.9 m.