应用定量荧光技术判识番禺低隆起—白云凹陷北坡残余油藏并重构烃类充注史  

Identifying residual oil pools and reconstructing hydrocarbon charge history by a quantitative fluorescence techniques along Panyu low uplift-north slope in Baiyun sag

作　　者：施和生 吴建耀 朱俊章 秦成岗 王飞宇[2] 朱丹[2] 

机构地区：[1]中海石油(中国)有限公司深圳分公司 [2]中国石油大学

出　　处：《中国海上油气（工程）》2007年第3期149-153,共5页China Offshore Oil and Gas

摘　　要：珠江口盆地白云凹陷油气勘探程度较低，目前尚未发现油田，已发现的天然气田和含气构造主要分布在番禺低隆起-白云凹陷北坡，天然气藏多伴生一定数量的凝析油。应用储层砂岩颗粒萃取液荧光定量分析（QGF—E）技术，测定了9口探井224个天然气产层或非产层砂岩样品萃取物的荧光发射光谱及强度。依据测定结果，结合储层流体包裹体资料、测井资料、MDT资料以及埋藏史研究结果分析认为：研究区内残余油藏主要分布在珠海组和珠江组下段，且分布较广泛，油质较轻；20～10Ma期间区内可能发生过两期石油充注，14～0 Ma期间可能发生过两期天然气充注。Baiyun sag in Pearl River Mouth basin is lower in exploration maturity, where currently no oilfield is discovered, and the discovered gasfields and gas-bearing structures are mainly located along Panyu low uplift-north slope in Baiyun sag, with more of them associated with some condensate. A new fluorescence technique, a quantitative fluorescence analysis of extract fluids from reservoir sandstone grains （QGF-E）, has been used to measure the fluorescence emission spectra and intensity of extract fluids from 224 sandstone samples of production and non-production reservoirs in 9 exploration wells in the area. On a basis of the measured results and in combination with the fluid inclusions, logging and MDT data as well as burial history of the reservoirs, it can be concluded that the residual oil pools are mainly existed in the lower members of Zhujiang and Zhuhai Formation, and they are distributed widely and composed of lighter oil in the study area. In addition, two phases of oil charge might occur during 20- 10 Ma, and two phases of gas charge during 14-0 Ma.

关 键 词：番禺低隆起-白云凹陷北坡残余油藏 烃类充注史 定量荧光技术 流体包裹体 

分 类 号：P618.13[天文地球—矿床学]