塔中地区上奥陶统热液流体与热化学硫酸盐还原作用

doi:10.11743/ogg20080210

Abstract

Abstract:

Measurements of rare earth elements,value of ⁸⁷Sr/⁸⁶Sr,and fluid inclusion,had been carried out on facture-filling minerals(such as calcite,fluorite and barite) in Tazhong area.Results show that the ⁸⁷Sr/⁸⁶Sr va-lues of all the filling minerals(0.708 89-0.710 36) and formation water are higher than that of the whole-rock samples of fracture-carbonate rock and sea water in the same period,and the homogenization temperature of fluid inclusion is about 20℃ higher than that of the highest temperature ever experienced by the Upper Ordovician,signaling the presence of hydrothermal fluid and a high concentration of ⁸⁷Sr.The hydrothermal fluid with high ⁸⁷Sr/⁸⁶Sr value is most likely derived from the Cambrian or pre-Cambrian clastic rocks.Its Eu²⁺ and Sr²⁺ are of similar origin,resulting in a positive Eu anomaly and a good linear relationship between Eu and Sr in the fracture fillings.It induced TSR and generated HSS and pyrite.Consequently,the process led to the replacement of barite by calcite.The presence of fracture-filling ⁸⁷Sr-rich fluorite with relatively low temperature and low salinity as indicates that beside the influence of hydrothermal fluid,the area might also be affected by fresh water and basin fluid of low temperature.

Key words: rare earth element, Eu anomaly, hydrothermal fluid, thermochemical sulfate reduction, Tazhong area

CLC Number:

Li Kaikai, Cai Chunfang, Cai Liulu, Zhang Chunming. Hydrothermal fluid activity and thermochemical sulfate reduction in the Upper Ordovician,Tazhong area[J]. Oil & Gas Geology, 2008, 29(2): 217-222.

References

[1] 俞仁连,闫相宾,金晓辉,等.塔里木盆地研究进展与勘探方向[J].石油与天然气地质,2005,26(5):598～604
[2] 闫相宾,李铁军,张涛,等.塔中与塔河地区奥陶系岩溶储层形成条件的差异[J].石油与天然气地质,2005,26(2):202～207
[3] 朱东亚,胡文瑄,宋玉才,等.塔里木盆地塔中45井油藏萤石化特征及其对储层的影响[J].岩石矿物学杂志,2005,24(3):205～215
[4] 吕修祥,杨宁,解启来,等.塔中地区深部流体对碳酸盐岩储层的改造作用[J].石油与天然气地质,2005,26(3):284～289
[5] 张兴阳,顾家裕,罗平,等.塔里木盆地奥陶系萤石成因及其油气地质意义[J].岩石学报,2006,22(8):2 220～2 228
[6] Cai C F,Franks S G,Aagaard P.Origin and migration of brines from Paleozoic strata in Central Tarim,China:constraints from ⁸⁷Sr/⁸⁶Sr,δD,δ18O and water chemistry[J].Applied Geochemistry,2001,16(9 -10):1 269 -1 283
[7] 柳少波,顾家裕.包裹体在石油地质研究中的应用与问题讨论[J].石油与天然气地质,1997,18(4):326～331
[8] Machel H G,Lonnee J.Hydrothermal dolomite-a product of poor definition and imagination[J].Sedimentary Geology,2002,152(3 -4):163 -171
[9] Cai C F,Hu W S,Worden R H.Thermochemical sulphate reduction in Cambro Ordovician carbonates in Central Tarim[J].Marine and Petroleum Geology,2001,18(6),729 -741
[10] Alonso Azcarate J,Bottrell S H,Tritlla J.Sulfur redox reactions and formation of native sulfur veins during low grade metamorphism of gypsum evaporites,Cameros Basin(NE Spain)[J].Chemical Geology,2001,174(4):389-402
[11] 蔡春芳,邬光辉,李开开,等.塔中地区古生界热化学硫酸盐还原作用与原油中硫的成因[J].矿物岩石地球化学通报,2007,26(1):44～48
[12] Luders V,Moller P,Dulskl P.REE Fractionation in Carbonates and Fluorite[J].Monograph Series on Mineral Deposits,1993,30(9):133-150
[13] Hecht L,Freiberger R,Gilg H A,et al.Rare earth element and isotope(C,O,Sr)characteristics of hydrothermal carbonates:genetic implications for dolomite hosted talc mineralization at Gpfersgrün(Fichtelgebirge,Germany)[J].Chemical Geology,1999,155(1 -2):115 -130
[14] Cai C F,Li K K,Li H T.Fluid inclusion and isotopic constraint for fluid evolution in the Ordovician veins in Central Tarim,NW China[A].In:Bullen T D,Wang Y C,eds.Water rock interaction[M].London:Taylor & Francis Group,2007.703-707
[15] Lee S G,Lee D H,Kim Y,et al.Rare earth elements as indicators of groundwater environment changes in a fractured rock system:evidence from fracture filling calcite[J].Applied Geochemistry,2003,18(1):135-143
[16] Jiang M S,Zhu J Q,Chen D Z,et al.Carbon and strontium isotope variations and responses to sea level fluctuations in the Ordovician of the Tarim Basin[J].Science in China(Series D)-Earth Sciences,2001,44(9):816-823

Hydrothermal fluid activity and thermochemical sulfate reduction in the Upper Ordovician,Tazhong area

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	Jiaquan ZHOU, Yue WANG, Ziyi SONG, Jiting LIU, Sainan CHENG. Characterizing hydrothermal siliceous nodules to guide shale oil exploration in the Middle Permian Lucaogou Formation， Bogda area， Junggar Basin [J]. Oil & Gas Geology, 2023, 44(3): 789-800.
[2]	Jing Yuan, Tao Zhou, Jun Qiao, Guili Yang, Guanghao Zhao. Deep hydrothermalism of deep coarse-grained siliciclastic rocks and its geological significance： A case study of the 4^th member of the Paleogene Shahejie Formation in Minfeng-Yanjia area， Dongying Sag， Bohai Bay Basin [J]. Oil & Gas Geology, 2022, 43(4): 929-942.
[3]	Ting Li, Dancheng Zhu, Minglei Yang, Pingping Li, Huayao Zou. Influence of hydrothermal activity on the Maokou Formation dolostone in the central and western Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(3): 639-651.
[4]	Chuntao Guo, Haiqiang Song, Jie Liang, Lingmei Ni. Origin of Cambrian dolomite from Well Milan 1 in Tadong area and its significance to dolomite reservoirs [J]. Oil & Gas Geology, 2020, 41(5): 953-964.
[5]	Lixin Tian, Qingbin Wang, Xiaojian Liu, Yiwei Hao. Geological features and their participation in the formation of silicified clastic reservoirs in the Shahejie Formation of Laizhouwan Sag, Bohai Sea [J]. Oil & Gas Geology, 2020, 41(5): 1073-1082.
[6]	Sun Funing, Hu Wenxuan, Hu Zhongya, Liu Yongli, Kang Xun, Zhu Feng. Impact of hydrothermal activities on reservoir formation controlled by both faults and sequences boundaries: A case study from the Lower Ordovician in Tahe and Yubei areas,Tarim Basin [J]. Oil & Gas Geology, 2020, 41(3): 558-575.
[7]	Jiaqing Liu, Zhong Li, Mengke Yan, K.Swart Peter, Liu Yang, Chaojin Lu. Diagenetic fluid evolution of dolomite from the Lower Ordovician in Tazhong area, Tarim Basin: Clumped isotopic evidence [J]. Oil & Gas Geology, 2020, 41(1): 68-82.
[8]	Donghua You, Zicheng Cao, Mingjun Xu, Yixiong Qian, Shi Wang, Xiaolin Wang. Genetic mechanism of multi-type dolomite reservoirs in Ordovician Yingshan Formation, Tarim Basin [J]. Oil & Gas Geology, 2020, 41(1): 92-101.
[9]	Yuan Wei, Liu Guangdi, Xu Liming, Niu Xiaobing. Main controlling factors for organic matter enrichment in Chang 7 member of the Yanchang Formation,Ordos Basin [J]. Oil & Gas Geology, 2019, 40(2): 326-334.
[10]	Ma Anlai, Jin Zhijun, Zhu Cuishan, Gu Yi, Li Huili, Lu Qinghua. Effect of TSR on the crude oil in Ordovician reservoirs of Well Luosi-2 from Maigaiti Slope,Tarim Basin: Evidences from molecular markers [J]. Oil & Gas Geology, 2018, 39(4): 730-737,748.
[11]	Ning Fei, Jin Zhijun, Zhang Zhongpei, Yun Jinbiao, Zhang Jibiao. Mechanism of strike-slip faulting and hydrocarbon accumulation in northern slope of Tazhong area [J]. Oil & Gas Geology, 2018, 39(1): 98-106.
[12]	Wang Pengwan, Zhang Lei, Li Chang, Li Xianjing, Zou Chen, Zhang Zhao, Li Junjun, Li Qingfei. Redox conditions and organic enrichment mechanisms of black shale:A case from the Wufeng-lower Longmaxi Formations in Well A in Zhaotong shale gas demonstration area [J]. Oil & Gas Geology, 2017, 38(5): 933-943.
[13]	Zhang Xuefeng, Li Xiaofeng, Li Zongjie, Liu Bo, Song Haiqiang. Relict texture of dolostones and its significance to sedimentary facies:A case study from the Middle-Lower Ordovician in Tazhong area,Tarim Basin [J]. Oil & Gas Geology, 2017, 38(4): 722-728.
[14]	Jiang Wenjian, Hou Mingcai, Xing Fengcun, Xu Shenglin, Ling Liangbiao. Characteristics and indications of rare earth elements in dolomite of the Cambrian Loushanguan Group,SE Sichuan Basin [J]. Oil & Gas Geology, 2016, 37(4): 473-482.
[15]	Zhang Heng, Cai Zhongxian, Qi Lixin, Yun Lu. Types and characteristics of eogenetic karst in the Yingshan Formation in northwestern Tazhong area,Tarim Basin [J]. Oil & Gas Geology, 2016, 37(3): 291-303.