摘要
焉耆盆地油田水有CaCl2 和NaHCO3两种类型 ,矿化度为 5 5～ 73 2g/L ,呈正向水化学剖面特征 ,具明显的分区性 :CaCl2 型主要分布于宝浪苏木构造带的宝北区块的北部地区 ;NaHCO3型则主要分布在宝南、本布图、种马场区块及宝中区块的部分地区。油田水中有机质丰度均较低 ,多数在 2× 10 -6 以下 ;有机酸含量很高 ,一般为2 5 46× 10 -6 ～ 5 148× 10 -6 ;酚含量一般为 0 12× 10 -6 ～ 4 63× 10 -6 。已证实盆地存在自由交替带、缓慢交替带、阻滞带 3个水文地质带 ,北部保存条件好于南部 。
There are two kinds of oil field water(Ca Cl 2 and NaHCO 3) in Yanqi basin, the water mineralization is 5.5～73.2/1,presenting in forward water chemical section character with apparent zoning. Ca Cl 2 type is mainly \{distributed\} in northern area of Baobei block,in Baolang Sumu structural belt, whereas NaHCO 3 is chiefly distributed in the blocks of Baonan,Benbutu,Zhongmachang as well as some areas of Baozhong block. Organic mater abundance in oil field water is lower (below 2×10 -6 ) while organic acid content is very high(2546×10 -6 ～5148×10 -6 and acid content is usually 0.12×10 -6 ～4.63×10 -6 . Therefore, it is confirmed that there are three hydro-geologic belts in the basin namely; free alternative belt, slow alternative belt and hindered belt, and the preserving condition in the north is better than that in the south and central part is better than that in the edge of the basin.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2002年第4期406-409,共4页
Oil & Gas Geology
关键词
焉耆盆地
油田水
油气藏
地球化学
分带
oil field water
geochemistry
oil-gas pool
zoning
Yanqi basin
