准噶尔盆地石炭—二叠系方解石脉的碳、氧、锶同位素组成与含油气流体运移

被引:37
作者
曹剑 [1 ]
胡文 [1 ]
姚素平 [1 ]
张义杰 [2 ]
王绪龙 [3 ]
张越迁 [3 ]
黄志赳 [3 ]
机构
[1] 内生金属矿床成矿机制研究国家重点实验室南京大学地球科学系
[2] 中国石油勘探开发研究院
[3] 中国石油新疆油田公司
关键词
碳、氧、锶同位素; 方解石脉; 储层成岩; 油气运移; 准噶尔盆地;
D O I
10.14027/j.cnki.cjxb.2007.05.017
中图分类号
P597 [同位素地质学与地质年代学]; P618.13 [石油、天然气];
学科分类号
摘要
在准噶尔盆地当前油气勘探的重点目标区西北缘和腹部地区,油气主要源于深部石炭系—二叠系。通过对其中的典型水岩反应产物,即裂隙方解石脉进行碳、氧、锶同位素组成分析,尝试讨论了油源流体运移的基本特征。实验结果表明,25件方解石脉样品的δ13CPDB位于-21.5‰~5.2‰之间,δ18OPDB(δ18OSMOW)在-8.1‰~-22.3‰(22.6‰~6.9‰)之间;20个87Sr/86Sr比值分布在0.703896~0.706423之间。据此,结合样品地质产状和区域地质背景,提出本区含油气流体在运移过程中伴随着深部热流体的影响,它们在流经石炭—二叠系时,对火山岩层的溶蚀使得流体岩石相互作用产物,即方解石脉的同位素组成反映出火山岩地层的地球化学标记。该认识表明,在今后的区域储层成岩演化和油气运移研究工作中,应充分考虑这类深部热流体作用的影响。
引用
收藏
页码:722 / 729
页数:8
相关论文
共 21 条
[11]  
Geochemical study of calcite veins in the Silurian and Devonian of the Barrandian Basin (Czech Republic): evidence for widespread post-Variscan fluid flow in the central part of the Bohemian Massif.[J].V Suchy;W Heijlen;I Sykorova;Ph Muchez;P Dobes;J Hladikova;I Jackova;J Safanda;A Zeman.Sedimentary Geology.2000, 3
[12]   Strontium isotope profile of the early Toarcian (Jurassic) oceanic anoxic event, the duration of ammonite biozones, and belemnite palaeotemperatures [J].
McArthur, JM ;
Donovan, DT ;
Thirlwall, MF ;
Fouke, BW ;
Mattey, D .
EARTH AND PLANETARY SCIENCE LETTERS, 2000, 179 (02) :269-285
[13]  
Cement distribution in a carbonate reservoir: recognition of a palaeo oil–water contact and its relationship to reservoir quality in the Humbly Grove field; onshore; UK.[J].Emma C Heasley;Richard H Worden;James P Hendry.Marine and Petroleum Geology.2000, 5
[14]  
Crustal contamination and fluid/rock interaction in the carbonatites of Fuerteventura (Canary Islands; Spain): a C; O; H isotope study.[J].A. Demény;A. Ahijado;R. Casillas;T.W. Vennemann.LITHOS.1998, 3
[15]   Oxygen, carbon and strontium isotope study of the carbonatitic dolomite host of the Bayan Obo Fe-Nb-REE deposit, Inner Mongolia, N China [J].
LeBas, MJ ;
Spiro, B ;
Yang, XM .
MINERALOGICAL MAGAZINE, 1997, 61 (04) :531-541
[16]  
Strontium isotope stratigraphy: potential resolution and event correlation.[J].Ján Veizer;Dieter Buhl;Andreas Diener;Stefan Ebneth;Olaf G Podlaha;Peter Bruckschen;Torsten Jasper;Christoph Korte;Michael Schaaf;Davin Ala;Karem Azmy.Palaeogeography; Palaeoclimatology; Palaeoecology.1997, 1
[17]  
Formation of complex fibrous calcite veins in Upper Triassic strata of Wrangellia Terrain; British Columbia; Canada.[J].I.S. Al-Aasm;M. Coniglio;A. Desrochers.Sedimentary Geology.1995, 1
[18]  
Neoproterozoic variations in the C-isotopic composition of seawater: stratigraphic and biogeochemical implications.[J].Alan J. Kaufman;Andrew H. Knoll.Precambrian Research.1995, 1
[19]  
油气稳定同位素地球化学.[M].王大锐著;.石油工业出版社.2000,
[20]  
稳定同位素地球化学.[M].郑永飞;陈江峰编著;.科学出版社.2000,