鄂尔多斯盆地吴堡地区上三叠统延长组原油地球化学特征及油源对比

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鄂尔多斯盆地吴堡地区上三叠统延长组原油地球化学特征及油源对比

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中图分类号: P593

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Geochemical Characteristics of Crude Oil and Oil Source Correlation in Yanchang Formation(Upper Triassic) in Wubao Area, Ordos Basin

摘要

摘要: 鄂尔多斯盆地延长组油源一直存在争议，尤以长8~长10油藏的油源问题最为突出。通过吴堡地区延长组长6~长10原油的物理性质、族组成、生物标志化合物等特征，油-油、油-源对比等综合分析，探讨延长组原油的成因，明确各油层组石油来源，为该区的油气勘探与预测提供地质依据。结果显示，长6~长10原油族组分具有饱和烃含量最高，芳香烃次之，非烃和沥青质含量最低的特征。长6~长10均为成熟原油，显示出低等水生生物和高等植物混合成因，但长6原油与长7~长10原油族组成特征存在明显差异。长6原油为长7烃源岩早期烃类运移的结果，其成熟度最低，长7~长10原油为生烃高峰阶段石油运移结果，成熟度较高。长6和长7油藏的原油主要为长7底部张家滩页岩贡献，此外，长7中上部和长6地层中发育的有效烃源岩也有一定贡献。长8油藏原油为混合成因原油，主要为长7底部烃源岩向下运移结果，其次为长8内部烃源岩和长9顶部李家畔页岩之贡献。长9油藏原油主要为李家畔页岩向下倒灌形成，长10油藏可能主要为长92有效烃源岩向下运移成藏。热成熟度不同是导致远离主力烃源岩原油族组分之间差异性的主要原因。
- /
- 原油地球化学 /
- 油源对比 /
- 延长组 /
- 吴堡地区 /
- 鄂尔多斯盆地
Abstract: The oil sources in the Yanchang Formation of the Ordos Basin has always been controversial, especially in the reservoir Chang8 to Chang10.According to the crude oil of Chang6 to Chang10 of Yanchang Formation in Wubao area, the article discusses the physical properties, the group composition, the biomarkers, and the oiloil and oilsource correlation in terms of their geneses and the origin of petroleum in respective reservoirs so as to provide the geological basis for the area's petroleum exploration and prediction. The result shows that the group composition of Chang6 to Chang10 is characterized by the highest content of the saturated hydrocarbon, which follows the aromatics, and non hydrocarbons are the lowest. Chang6 to Chang10 are all mature crude oil, revealing the hybrid origin of the lower hydrobionts and the higher plants, however, the crude oil in Chang6 is distinctively different from that in Chang7 to Chang10 in terms of its group composition. The crude oil in Chang6 is the early migration result of hydrocarbons in the source rock of Chang7 to Chang10, whose maturity is the lowest, while the crude oil in Chang7 to Chang10 is migration result of hydrocarbon generating peaks, whose maturity is superior. And the oil and source correlation demonstrates that Zhangjiatan shale, at the bottom of the Chang7, contribute to the oil pools in Chang6 and Chang7, in addition, the effective source rocks on the top and middle of Chang7 and Chang6 make difference. The oil pools in Chang8, mixed geneses crude oil, are mainly the down migration result of the lower source rocks in Chang7, secondly Chang8 and Lijiapan source rocks on the top of Chang9 do. The oil pools in Chang9 are formed by the downward flow of Lijiapan shale, but the petroleum in Chang10 is accumulated may by the downward migration of the effective source rocks of Chang92. The thermal maturity should be the most responsible for the differences between crude oil group compositions which are far away from the dominant source rocks.
- oil geochemistry /
- oilsource correlation /
- Yanchang Formation /
- Wubao area /
- Ordos Basin /

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[1]	李梦茹, 唐友军, 杨易卓, 于瑾. 江陵凹陷古近系新沟嘴组下段原油芳烃馏分地球化学特征及油源对比 . 沉积学报, 2024, 42(1): 266-281. doi: 10.14027/j.issn.1000-0550.2022.026
[2]	张军, 白玉彬, 闫新智, 赵靖舟, 徐宁. 鄂尔多斯盆地富县地区延长组长7段深水重力流沉积特征及油气勘探意义 . 沉积学报, 2024, (): -. doi: 10.14027/j.issn.1000-0550.2024.059
[3]	李一凡, 郭懿萱, 姚泾利, 赵俊峰, 刘鑫, 白金莉, 李慧琼. 鄂尔多斯盆地西南部三叠系延长组划分与对比关系再认识 . 沉积学报, 2024, 42(4): 1297-1308. doi: 10.14027/j.issn.1000-0550.2023.018
[4]	马立元, 邱桂强, 胡才志, 徐士林, 陈纯芳, 李松. 鄂尔多斯盆地红河油田延长组致密砂岩成藏机制分析 . 沉积学报, 2022, 40(6): 1762-1773. doi: 10.14027/j.issn.1000-0550.2021.171
[5]	李相博, 刘化清, 邓秀芹, 王雅婷, 龙礼文, 魏立花, 郝斌. 干旱环境河流扇概念与鄂尔多斯盆地延长组“满盆砂”成因新解 . 沉积学报, 2021, 39(5): 1208-1221. doi: 10.14027/j.issn.1000-0550.2020.077
[6]	郑庆华, 刘行军, 柳益群, 周鼎武, 杨开艳, 王贵文, 张洋洋, 陈朕, 刘亮. 鄂尔多斯盆地延长组长7油层组碳酸质喷积岩初探 . 沉积学报, 2021, 39(5): 1222-1238. doi: 10.14027/j.issn.1000-0550.2020.075
[7]	马立元, 胡才志, 邱桂强, 陈纯芳, 高金慧, 徐士林. 鄂尔多斯盆地镇泾地区长8段储层非均质性及其结构模式 . 沉积学报, 2020, 38(5): 1088-1098. doi: 10.14027/j.issn.1000-0550.2020.039
[8]	尹泽, 刘自亮, 彭楠, 沈芳, 谭梦琪, 王玉冲, 梁雨晨, 王红伟. 鄂尔多斯盆地西缘上三叠统延长组沉积相特征研究 . 沉积学报, 2019, 37(1): 163-176. doi: 10.14027/j.issn.1000-0550.2018.156
[9]	屈雪峰, 温德顺, 张龙, 崔争锋, 张瀚丹, 马静. 鄂尔多斯盆地延长组超低渗透油藏形成过程分析——以古峰庄-麻黄山地区为例 . 沉积学报, 2017, 35(2): 383-392. doi: 10.14027/j.cnki.cjxb.2017.02.015
[10]	明晓冉, 刘立, 刘娜娜, 宋土顺, 王福刚, 于严龙. 鄂尔多斯盆地JX井延长组砂岩固碳潜力分析 . 沉积学报, 2015, 33(1): 202-210. doi: 10.14027/j.cnki.cjxb.2015.01.021
[11]	马立元, 尹航, 陈纯芳, 尹伟. 鄂尔多斯盆地红河油田原油地球化学特征及油源分析 . 沉积学报, 2015, 33(2): 416-425. doi: 10.14027/j.cnki.cjxb.2015.02.021
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[13]	. 深水块状砂岩碎屑流成因的直接证据：“泥包砾”结构——以鄂尔多斯盆地上三叠统延长组研究为例 . 沉积学报, 2014, 32(4): 611-622.
[14]	. 鄂尔多斯盆地延长组深水岩相发育特征及其石油地质意义 . 沉积学报, 2013, 31(05): 928-938.
[15]	李元昊. 鄂尔多斯盆地三叠系延长组震积岩特征研究 . 沉积学报, 2008, 26(5): 772-779.
[16]	郭彦如刘化清李相博完颜容郑希民. 大型坳陷湖盆层序地层格架的研究方法体系 ———以鄂尔多斯盆地中生界延长组为例 . 沉积学报, 2008, 26(3): 384-391.
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[18]	罗忠. 层序界面对砂岩成岩作用及储层质量的影响——以鄂尔多斯盆地延河露头上三叠统延长组为例 . 沉积学报, 2007, 25(6): 903-914.
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鄂尔多斯盆地吴堡地区上三叠统延长组原油地球化学特征及油源对比

刊出日期: 2013-04-10

中图分类号: P593

关键词:

延长组 /

摘要: 鄂尔多斯盆地延长组油源一直存在争议，尤以长8~长10油藏的油源问题最为突出。通过吴堡地区延长组长6~长10原油的物理性质、族组成、生物标志化合物等特征，油-油、油-源对比等综合分析，探讨延长组原油的成因，明确各油层组石油来源，为该区的油气勘探与预测提供地质依据。结果显示，长6~长10原油族组分具有饱和烃含量最高，芳香烃次之，非烃和沥青质含量最低的特征。长6~长10均为成熟原油，显示出低等水生生物和高等植物混合成因，但长6原油与长7~长10原油族组成特征存在明显差异。长6原油为长7烃源岩早期烃类运移的结果，其成熟度最低，长7~长10原油为生烃高峰阶段石油运移结果，成熟度较高。长6和长7油藏的原油主要为长7底部张家滩页岩贡献，此外，长7中上部和长6地层中发育的有效烃源岩也有一定贡献。长8油藏原油为混合成因原油，主要为长7底部烃源岩向下运移结果，其次为长8内部烃源岩和长9顶部李家畔页岩之贡献。长9油藏原油主要为李家畔页岩向下倒灌形成，长10油藏可能主要为长92有效烃源岩向下运移成藏。热成熟度不同是导致远离主力烃源岩原油族组分之间差异性的主要原因。

Geochemical Characteristics of Crude Oil and Oil Source Correlation in Yanchang Formation(Upper Triassic) in Wubao Area, Ordos Basin

Publish Date: 2013-04-10

Keywords:

Abstract: The oil sources in the Yanchang Formation of the Ordos Basin has always been controversial, especially in the reservoir Chang8 to Chang10.According to the crude oil of Chang6 to Chang10 of Yanchang Formation in Wubao area, the article discusses the physical properties, the group composition, the biomarkers, and the oiloil and oilsource correlation in terms of their geneses and the origin of petroleum in respective reservoirs so as to provide the geological basis for the area's petroleum exploration and prediction. The result shows that the group composition of Chang6 to Chang10 is characterized by the highest content of the saturated hydrocarbon, which follows the aromatics, and non hydrocarbons are the lowest. Chang6 to Chang10 are all mature crude oil, revealing the hybrid origin of the lower hydrobionts and the higher plants, however, the crude oil in Chang6 is distinctively different from that in Chang7 to Chang10 in terms of its group composition. The crude oil in Chang6 is the early migration result of hydrocarbons in the source rock of Chang7 to Chang10, whose maturity is the lowest, while the crude oil in Chang7 to Chang10 is migration result of hydrocarbon generating peaks, whose maturity is superior. And the oil and source correlation demonstrates that Zhangjiatan shale, at the bottom of the Chang7, contribute to the oil pools in Chang6 and Chang7, in addition, the effective source rocks on the top and middle of Chang7 and Chang6 make difference. The oil pools in Chang8, mixed geneses crude oil, are mainly the down migration result of the lower source rocks in Chang7, secondly Chang8 and Lijiapan source rocks on the top of Chang9 do. The oil pools in Chang9 are formed by the downward flow of Lijiapan shale, but the petroleum in Chang10 is accumulated may by the downward migration of the effective source rocks of Chang92. The thermal maturity should be the most responsible for the differences between crude oil group compositions which are far away from the dominant source rocks.

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鄂尔多斯盆地吴堡地区上三叠统延长组原油地球化学特征及油源对比

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Geochemical Characteristics of Crude Oil and Oil Source Correlation in Yanchang Formation(Upper Triassic) in Wubao Area, Ordos Basin

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鄂尔多斯盆地吴堡地区上三叠统延长组原油地球化学特征及油源对比

English Abstract

Geochemical Characteristics of Crude Oil and Oil Source Correlation in Yanchang Formation(Upper Triassic) in Wubao Area, Ordos Basin

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鄂尔多斯盆地吴堡地区上三叠统延长组原油地球化学特征及油源对比

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出版历程

Geochemical Characteristics of Crude Oil and Oil Source Correlation in Yanchang Formation(Upper Triassic) in Wubao Area, Ordos Basin

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出版历程

目录

鄂尔多斯盆地吴堡地区上三叠统延长组原油地球化学特征及油源对比

English Abstract

Geochemical Characteristics of Crude Oil and Oil Source Correlation in Yanchang Formation(Upper Triassic) in Wubao Area, Ordos Basin

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目录

友情链接

期刊在线

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