Characteristics of Neogene Formation Water and Its Response to Hydrocarbon Distribution in Liuxi-Liubei Area of Raoyang Sag

详细信息   

• 责任者：Zhao Lijie (School of Geosciences ; China University of Petroleum ; Oingdao 266555 ; China) ; Jiang Youlu
• 刊名：Journal of Earth Sciences and Environment
• 出版年：2012
• 卷期：34(2)
• 关键词：水化学 ; hydrochemistry ; 新近纪 ; Neogene Period ; 冀中坳陷 ; Jizhong Depression
• 页码：p.57-63
• 图表：illus., 2 tables, 20 refs.
• 分类号：1003
• issnNo：ISSN1672-6561
• isbnNo：CN61-1423/P

摘要

Neogene formation water and its response to hydrocarbon distribution in Liuxi-Liubei Area, in which hydrocarbon was richest in Raoyang Sag of Jizhong Depression, were analyzed; distribution characteristics of salinity and hydrochemical type of Neogene formation water were discussed; the internal relationship between abnormal geochemistry characteristics of Neogene formation water and the migration and distribution of hydrocarbon in the area was revealed. The results showed that Neogene developed NaHCO₃ type of formation water with low salinity in Liuxi-Liubei Area, the salinity of formation water increased gradually from west to east and from north to south, and the hydrochemical type developed from HC0₃^--Cl ^--Na⁺ to C1^- -HCO^--Na⁺ ; the corresponding relationship between abnormal Neogene formation water and hydrocarbon distribution was fine under the condition of good oil source and fault; Neogene hydrocarbon was usually rich in the area with high salinity of formation water, abnormal hydrochemical type and source fault developed, and the Na₂SO₄ or MgC1₂ type of Neogene formation water with high salinity indicated the characteristics of migration and accumulation from lower to upper.