
第38卷第2期 2017年4月
文章编号:1001-3873(2017)02-0161-04
新疆石油地质
XINJIANG PETROLEUM GEOLOGY DOI:10.7657/XJPG20170207
Vol. 38,No.2 Apr.2017
麦盖提斜坡玛南构造带鹰山组原油包裹体荧光光谱特征
斯尚华1-2,陈红汉”,熊万林”,李培军”,鲁子野?
(1.西安石油大学地球科学与工程学院,西安710065;2.中国地质大学资源学院,武汉430074;
3.中海石油(中国)有限公司深圳分公司.广州510083)
摘要:为查明麦盖提斜坡玛南构造带离山组油气成藏规律,对原油包裹体的荧光光谱进行定量化播述,利用其主峰波长入m、红绿滴Q及Qsw等属性参数,识别出玛南构造带鹰山组储集层中发育色、黄绿色、蓝绿色、蓝白色4种荧光颜色的原油包裹体,它们分别代表了在4幕原油究注,原油包裹体主峰波长入与Qrss分市在4个区域,荧光光谱Qss 逐渐减小,反映了包裹体所捕获原油的成熟度逐渐增高。其中「幕、Ⅱ幕和Ⅲ幕原油充注对现今虞山组油气藏的贡
献大于IV幕,I幕为早期低成熟度原油充注,Ⅱ幕、Ⅲ幕和IV幕为晚期较高成熟度原油充注。关键词:塔里木盆地;麦盖提斜料坡;玛南构造带;鹰山组;原油包豪体;荧光光谱;成藏期次
中图分类号:TE125
文献标识码:A
Fluorescence Characteristics of Oil Inclusions ofYingshanFormation inMa'nan Structural
Belt of Maigaiti Slope
SI Shanghua', CHEN Honghan', XIONG Wanling , LI Peijun', LU Ziye
(1.School of Earth Sciences and Engineering, Xi'an Shiyou University, Xian, Shaanxi 710065, China; 2.Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China; 3.Shenzhen Branch, CNOOC, Guangzhou, Guangdong 510083, China) Abstract: In order to understand the hydrocarbon accumulation of Yingshan formation in Ma'nan structural belt of Maigaiti slope, the pa-per quantitatively describes the fluorescence spectrum of oil inclusions and identifies the oil inclusions with 4 fluorescent colors of orange yellow-green, blue-green and blue-white by using peak wavelength (A.-), red-green quotient(Q)and Qrss parameters, which represents 4 diferent stages of oil and gas charging, respectively. The peak wavelength(A.) and Qrs of oil inclusions are distributed in 4 different ar-eas, The decrease of Qrss value reflects the gradual increase of the maturity of the oil trapped by inclusions. Hydrocarbon charging during stages I , II and II made more contributions to the current oil and gas reservoirs of Yingshan formation than that of stage IV, The stage I is lowmaturity oil charging at the early stage and the stages II,Il and IV are highmaturity oil charging at the late stage.
Keywords: Tarim basin; Maigaiti slope; Ma' nan structural belt; Yingshan formation; oil inclusion; fluorescence spectrum; hydrocarbon
accumulation stage
麦盖提斜坡是塔里木盆地西南坳陷内的次级构造单元,整体呈北西西一南东东向展布。玛南构造带位于麦盖提斜坡东南部(图1),构造带内奥陶系主要发育中一下统鹰山组和下统蓬莱坝组,其余层位基本缺失,并且已在玉北1井鹰山组获得工业油气流。前人从构造演化、沉积、储集层、成藏特征等方面对麦盖提斜坡做了大量研究工作-6,但针对玛南构造带的研究成果较少。本文从原油包裹体荧光光谱特征着手,分析玛南构造带鹰山组油气成藏期次及各期次原油
相对成熟度,以期对研究区油气勘探有所神益。原油包裹体荧光光谱参数计算方法
紫外线荧光发射光谱法是一种非破坏性流体包裹体分析方法,发射光谱可以通过光谱仪进行定量记
收稿日期:2016-09-03
修订日期:2016-12-02
巴
图1研究区构造位置
批
录,或通过肉眼定性观察荧光的颜色,后者反映了原油包裹体组分的差异。利用原油包裹体荧光光谱的主峰波长入m、红绿Q和Qrss这3个参数可以判断古油
基金项目:国家973项目(2012CB214804):西安石油大学青年科技创新基金项目(2014BS06);陕西省教育厅重点实验室项目(16JS087)作者简介:斯尚华(1981-).男,湖北荆州人,讲师,博士,油气成藏地质,(Tel)18192514059(E-mail)sishanghua0724@163.com
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