油气藏评价与开发 ›› 2024, Vol. 14 ›› Issue (4): 549-559.doi: 10.13809/j.cnki.cn32-1825/te.2024.04.004
薛一帆1(),文志刚1,黄亚浩1(),张银涛2,乔占峰3,张天付3,李梦勤2,王彭2
收稿日期:
2024-02-19
出版日期:
2024-08-26
发布日期:
2024-09-10
通讯作者:
黄亚浩(1990—),男,博士,副教授,主要从事油气成藏机理研究。地址:湖北省武汉市蔡甸区大学城路111号长江大学,邮政编码:430100。E-mail:hyhtr08916@163.com
作者简介:
薛一帆(2003—),男,在读硕士研究生,主要从事油气成藏机理研究。地址:湖北省武汉市蔡甸区大学城路111号长江大学,邮政编码:430100。E-mail:基金资助:
XUE Yifan1(),WEN Zhigang1,HUANG Yahao1(),ZHANG Yintao2,QIAO Zhanfeng3,ZHANG Tianfu3,LI Mengqin2,WANG Peng2
Received:
2024-02-19
Online:
2024-08-26
Published:
2024-09-10
摘要:
以富满油田北部走滑断裂带深部储层孔洞缝充填脉体为研究对象,基于脉体的岩相学特征、微区稀土元素和Sr(锶)同位素、油包裹体荧光光谱、显微热力学和碳酸盐岩U-Pb同位素定年进行分析。结果表明:富满油田北部走滑断裂带发育2期方解石脉体,脉体来源于中下奥陶统海源地层水,未见氧化性流体侵入,表明深层—超深层油气晚期具有良好的封闭性。通过包裹体测温投点埋藏史结合碳酸盐岩低U-Pb同位素定年技术,厘定塔里木盆地富满油田北部走滑断裂带深层奥陶系存在3期油气充注过程,分别对应于距今(459±7.2) Ma(加里东中期)、(348±18) Ma(海西早期)和268 Ma(海西晚期),富满油田北部深层—超深层碳酸盐岩油气成藏关键期为海西早期,且油气充注与断裂活动有较好的对应关系。
中图分类号:
Yifan XUE,Zhigang WEN,Yahao HUANG, et al. Study on reservoir fluid source and hydrocarbon accumulation process in deep to ultra-deep strike-slip fault zone: A case study of Fuman Oilfield, Tarim Basin[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(4): 549-559.
表1
塔里木盆地富满油田奥陶系不同方解石脉和围岩稀土元素含量"
不同期次样品 | La(镧) | Ce(铈) | Pr (镨) | Nd(钕) | Sm(钐) | Eu(铕) | Gd(钆) | Tb(铽) | Dy(镝) | Y (钇) | Ho(钬) | Er (铒) | Tm(铥) | Yb(镱) | Lu(镥) | Fe/ Mn | ΣREE | δCe | δEu | LREE/HREE |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C1 | 0.344 | 1.796 | 0.262 | 0.241 | 0.312 | 0.179 | 0.143 | 0.120 | 0.124 | 1.027 | 0.118 | 0.096 | 0.068 | 0.059 | 0.068 | 7.405 | 4.936 | 5.932 | 0.786 | 3.942 |
C1 | 0.132 | 0.842 | 0.141 | 0.130 | 0.109 | 0.077 | 0.087 | 0.032 | 0.029 | 0.421 | 0.033 | 0.054 | 0.037 | 0.033 | 0.023 | 6.985 | 2.172 | 6.165 | 0.790 | 4.350 |
C1 | 0.126 | 1.022 | 0.180 | 0.139 | 0.142 | 0.181 | 0.100 | 0.059 | 0.062 | 0.539 | 0.069 | 0.061 | 0.030 | 0.025 | 0.031 | 6.219 | 2.528 | 6.674 | 1.501 | 4.097 |
围岩 | 0.161 | 1.156 | 0.189 | 0.180 | 0.172 | 0.180 | 0.118 | 0.099 | 0.062 | 0.528 | 0.062 | 0.049 | 0.049 | 0.048 | 0.036 | 17.370 | 2.889 | 6.604 | 1.244 | 3.906 |
围岩 | 0.124 | 0.848 | 0.146 | 0.132 | 0.108 | 0.044 | 0.049 | 0.058 | 0.048 | 0.351 | 0.029 | 0.014 | 0.010 | 0.026 | 0.032 | 13.764 | 2.032 | 6.282 | 0.567 | 5.277 |
C2 | 0.013 | 0.080 | 0.017 | 0.010 | 0.014 | 0 | 0.007 | 0.003 | 0.006 | 0.037 | 0.004 | 0.005 | 0 | 0.003 | 0.001 | 2.535 | 0.205 | 5.168 | 0 | 4.609 |
C2 | 0.060 | 0.295 | 0.041 | 0.034 | 0.023 | 0.004 | 0.012 | 0.010 | 0.002 | 0.055 | 0.006 | 0.007 | 0.003 | 0.004 | 0.005 | 2.822 | 0.636 | 5.837 | 0.250 | 9.303 |
C2 | 0.018 | 0.108 | 0.024 | 0.015 | 0.019 | 0.009 | 0.009 | 0.003 | 0.004 | 0.040 | 0.008 | 0.003 | 0.005 | 0.007 | 0.002 | 2.861 | 0.266 | 5.183 | 0.661 | 4.748 |
围岩 | 0.008 | 0.056 | 0.011 | 0.007 | 0.002 | 0.021 | 0.009 | 0.013 | 0.008 | 0.046 | 0.006 | 0.004 | 0.004 | 0.004 | 0 | 19.146 | 0.168 | 5.807 | 3.806 | 2.197 |
围岩 | 0.008 | 0.058 | 0.007 | 0.012 | 0.003 | 0.005 | 0.013 | 0.005 | 0.004 | 0.045 | 0.006 | 0.002 | 0.011 | 0.003 | 0.007 | 21.908 | 0.175 | 7.846 | 0.635 | 1.816 |
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