%0 Journal Article
%T AHDEB油田白垩系油藏油气 充注期次的流体包裹体证据<br>Hydrocarbon Charging Period of Cretaceous Reservoirs in AHDEB 〇il Field: Evidence from Fluid Inclusion
%A 伏美燕
%A 刘 榧
%A 邓虎成
%A 黄婷婷
%A 王 浩&lt
%A br&gt
%A Fu Meiyan'
%A Liu Fei
%A Deng Hucheng
%A Huang Tingting
%A Wang Hao
%J 地球科学(中国地质大学学报)
%D 2015
%R 10.3799/dqkx.2015.099
%X 伊拉克AHDEB油田油藏成藏规律对油田后期开发具有重要意义,与埋藏史相结合的流体包裹体研究是揭示油藏油气成 藏期次和时间的有效手段.利用伊拉克AHDEB油田白垩系油藏储层样品对流体包裹体特征进行了分析,并且通过流体包裹体 的显微观察、荧光颜色、单一包裹体的红外光谱和均一温度测定,结合地质背景对该油田的油充注期次进行了研究.研究表明,油 包裹体以发绿色和黄绿色荧光为主,少数发浅黄色和黄褐色荧光.油包裹体的显微傅立叶红外光谱测定结果计算的CH2a/CH3a、 Xinc、Xstd可划分油的成熟度,表明存在两种成熟度的油.最后,根据均一温度测定结果,结合埋藏史和热史,认为该油田可能存在 4期油充注成藏相关的流体活动:第1成藏期发生在95.0~96.5Ma,相当于晚白垩世早期;第2成藏期为71.0~78.5Ma,相当于 晚白垩世晚期,第1期和第2期烃源岩排烃规模小,产生中-重质油,后期遭受氧化而形成沥青;第3成藏期发生在14.0~ 15.0Ma,相当于中中新世,处于生排烃高峰期,为主要成藏期;第4期发生在10.0Ma左右,与第3期为多幕连续充注.<br>The uncertainty of poo1-forming rule of AHDEB oilfield in Iraq has influenced the oilfiled deve1opment. Combining with buria1 history, the study of fluid inclusion is effective to revea1 the hydrocarbon charging period and time. The samples co1- 1ected from Cretaceous reservoirs of AHDEB oi1 field in Iraq were used to study the characteristics of fluid inclusion. Based on the observation of thin sections and the fluorescence co1or, measurement of μFT-IR and hornogenization temperature, combi- ning with analysis of geo1ogic setting, the hydrocarbon charging periods were researched. The results show that the fluores- cence co1ors of oi1 inclusion were mainly green and ye11ow-green, while minorlight ye11ow and ye11owish-brown. It is found by the measurement of μFT-IR of oi1 inclusion that there are2 types of maturity based on the value of CH2./CH,X,n, and X,d. The data of buria1 history, therma1 evolution history and the homogenization temperature indicate that there might be four terms of oi1 accumulation. The first term of oi1 charging occurred at95.0-96.5 Ma,equivalent to early Late-Cretaceous, and the second term occurred at71.0-78.5 Ma, equivalent tolate Late-Cretaceous, which were consistent with the sma11 scale of hydrocarbon generation by producing heavy oi1 that in turn was oxidized to asphalt. The third term of oi1 charging occurred at 14.0-15.0 Ma, equivalently Middle Miocene, which was the main accumulation, being consistent with the peak of hydrocarbon generation. The forth term occurred at10.0 Ma, which was the charging event related to the third term
%K AHDEB油田
%K 白垩系
%K 烃类
%K 流体包裹体
%K 红外光谱
%K 石油地质.&lt
%K br&gt
%K AHDEBoilfield
%K Cretaceous
%K hydrocarbons
%K fluid inclusion
%K infrared spectra
%K petroleum geo1ogy.
%U http://www.earth-science.net/WebPage/Article.aspx?id=3110