油气幕式成藏的矿物学和地球化学记录——以准噶尔盆地西北缘油藏为例

doi:10.11743/ogg20060402

石油与天然气地质 ›› 2006, Vol. 27 ›› Issue (4): 442-450.doi: 10.11743/ogg20060402

油气幕式成藏的矿物学和地球化学记录——以准噶尔盆地西北缘油藏为例

胡文瑄¹, 金之钧², 张义杰³, 姚素平², 张越迁⁴, 曹剑²

1. 南京大学, 地球科学系, 壳幔演化与成矿作用研究国家重点实验室, 江苏, 南京, 210093;
2. 中国石油化工股份有限公司, 石油勘探开发研究院, 北京, 100083;
3. 中国石油, 勘探开发研究院, 北京, 100083;
4. 中国石油天然气股份公司, 新疆油田分公司, 新疆, 克拉玛依, 834000

收稿日期:2006-07-06 出版日期:2006-08-25 发布日期:2012-01-16
基金资助:
国家基础研究发展规划项目资助(G1999043309)

Mineralogy and geochemical records of episodic reservoiring of hydrocarbon: example from the reservoirs in the northwest margin of Junggar basin

Hu Wenxuan¹, Jin Zhijun², Zhang Yijie³, Yao Suping², Zhang Yunqian⁴, Cao Jian²

1. State Key Laboratory of Crust-Mantle Evolution and Mineral Deposit Research, Department of Earth Sicences, Nanjing University, Nanjing, Jiangsu 210093;
2. Research Institute of Petroleum Exploration & Production, SINOPEC, Beijing 100083;
3. Exploration and Development Research Institute, PetroChina, Beijing 100083;
4. Xinjiang Oilfield Company, PetroChina, Kelamayi, Xinjiang 834000

Received:2006-07-06 Online:2006-08-25 Published:2012-01-16

摘要/Abstract

摘要：

报道了记录油气幕式成藏事件的含油环带状方解石等自生矿物及其地球化学特点。这种矿物发现在准噶尔盆地西北缘一些油气藏的油源断裂附近,方解石(或SiO₂裂隙填充物)内发育十余条或更多的烃类环带,与之相间生长的方解石的成分也频繁变化。地球化学示踪分析表明,含油气流体主要来源于深部二叠系,具有富含Fe和Mn等元素的特征,因此与油气充注密切相关的含油方解石明显富含Fe和Mn,使得环带状方解石的Fe,Mn和Mg等元素发生显著的波动特点,真实记录了含油气流体幕式充注的周期性过程。

关键词: 幕式成藏, 方解石环带, 地球化学记录, 准噶尔盆地

Abstract:

Authigenic minerals,such as calcite and etc.with oil-bearing girdles that recorded the traces of episodic reservoiring event and their geochemical characteristics,are studied in this paper.The calcite(also called SiO₂ the fissure filler),consisting of various components and interweaving with a dozen or more oil-bearing girdles inside them,is likely to be found near the source faults of some reservoirs in the northwest margin of Junggar basin.Geochemical tracing analysis suggests that the hydrocarbon-bearing fluids were mainly sourced from the deep of the Permian and had carried with them such elements as Fe,Mn,and etc..Therefore,the oil-bearing calcite in close relation to hydrocarbon charging is rich in Fe and Mn and the contents of Fe,Mn,and Mg in the calcite girdle fluctuate remarkably.This phenomenon honestly recorded the periodic process of the episodic charging of hydrocarbon-bearing fluids.

Key words: episodic reservoiring, calcite girdle, geochemical record, Junggar basin

中图分类号:

TE112.113

胡文瑄,金之钧,张义杰,等. 油气幕式成藏的矿物学和地球化学记录——以准噶尔盆地西北缘油藏为例[J]. 石油与天然气地质, 2006, 27(4): 442-450. doi: 10.11743/ogg20060402 Hu Wenxuan,Jin Zhijun,Zhang Yijie,et al. Mineralogy and geochemical records of episodic reservoiring of hydrocarbon: example from the reservoirs in the northwest margin of Junggar basin[J]. Oil & Gas Geology, 2006, 27(4): 442-450. doi: 10.11743/ogg20060402

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油气幕式成藏的矿物学和地球化学记录——以准噶尔盆地西北缘油藏为例

Mineralogy and geochemical records of episodic reservoiring of hydrocarbon: example from the reservoirs in the northwest margin of Junggar basin

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