柴西南地区古近系—新近系井—震统一层序地层格架的建立
摘要
柴西南地区古近系—新近系是柴达木盆地最主要的油气勘探区和开发区,通过对54口钻井和录井资料的详细层序地层学的研究,对研究区古近系-新近系的干柴沟组—狮子沟组地层中识别出了一个初次湖泛面和六个最大湖泛面,将其划分为6个三级层序和17个准层序组,并对十条连井剖面进行了层序对比。在此基础上,对柴西南三维地震区切出了与前述的钻井连井剖面相同的连井地震剖面,并通过对地震剖面层序界限识别和划分,以及将钻井剖面上的层序划分结果投影到连井地震剖面中等方法,对钻井剖面和地震剖面的层序划分结果进行了对比和调整,使两者完全统一,建立了柴西南区古近系-新近系井—震统一的高精度层序地层格架,这为该区开展岩性油气藏勘探奠定了基础。
Paleogene and Neogene in Southwest Qaidam Basin are the most important oil and gas exploration and development strata of the basin.Based on the detailed sequence stratigraphy study of 54 drilling and logging data,a first flooding surface and 6 maximum flooding surfaces were identified in Paleogene-Neogene Ganchaigou and Shizigou Formations,and these surfaces can be divided into 6 third-order sequences and 17 quasi-sequence groups.Sequence correlation was done in 10 well-to-well profiles.In corresponding to these well-to-well profiles,seismic profiles were sliced in 3D seismic data,and sequence boundaries were also identified in the seismic profiles.Then the identified sequences from well-to-well profiles were projected on seismic profiles,through correlation and adjustment,high-resolution Paleogene-Neogene drilling and seismic matching sequence stratigraphic framework was constructed in southwest Qaidam Basin.This work may give insights to explore lithologic oil and gas reservoirs in this area.
Paleogene and Neogene in Southwest Qaidam Basin are the most important oil and gas exploration and development strata of the basin.Based on the detailed sequence stratigraphy study of 54 drilling and logging data,a first flooding surface and 6 maximum flooding surfaces were identified in Paleogene-Neogene Ganchaigou and Shizigou Formations,and these surfaces can be divided into 6 third-order sequences and 17 quasi-sequence groups.Sequence correlation was done in 10 well-to-well profiles.In corresponding to these well-to-well profiles,seismic profiles were sliced in 3D seismic data,and sequence boundaries were also identified in the seismic profiles.Then the identified sequences from well-to-well profiles were projected on seismic profiles,through correlation and adjustment,high-resolution Paleogene-Neogene drilling and seismic matching sequence stratigraphic framework was constructed in southwest Qaidam Basin.This work may give insights to explore lithologic oil and gas reservoirs in this area.
引文
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8顾家裕.陆相盆地层序地层学格架概念及模式[J].石油勘探与开发,1995,22(4):6-10[Gu Jiayu.Framework concepts and models of sequence stratigraphy in nonmarine petroliferous basin[J].Petroleum Exploration and Development,1995,22(4):6-10]
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10邓宏文,王红亮,李熙喆.层序地层基准面的识别、对比及应用[J].石油与天然气地质,1996,17(3):177-183[Deng Hongwen,Wang Hongliang,Li Xizhe.Identification and correlation techniques ofsequence stratigraphic base-level and their application[J].Oil&Gas Geology,1996,17(3):177-183]
11郑荣才,尹世民,彭军.基准面旋回结构与叠加式样的沉积动力学分析[J].沉积学报,2000,18(3):369-375[Zheng Rongcai,Yin Shimin,Peng Jun.Sedimentary dynamic analysis of sequence structure and stacking pattern of base-level cycle[J].Acta Sedimentologica Sini-ca,2000,18(3):369-375]
12郑荣才,彭军,吴朝荣.陆相盆地基准面旋回的级次划分和研究意义[J].沉积学报,2001,19(2):249-255[Zheng Rongcai,Peng Jun,Wu Chaorong.Grade division of base level cycles of terrigenous basin and its implications[J].Acta Sedimentologica Sinica,2001,19(2):249-255]
13赵俊青,纪友亮,张世奇,等.陆相高分辨率层序界面识别的地球化学方法[J].沉积学报,2004,22(1):79-85[Zhao Junqing,Ji You-liang,Zhang Shiqi,et al.Geochemical methods of boundary identifica-tion in terrigenous high-resolution sequence[J].Acta Sedimentologica Sinica,2004,22(1):79-85]
14朱筱敏.层序地层学[M].山东东营:石油大学出版社,2000[Zhu Xiaomin.Sequence Stratigraphy[M].Dongying Shandong:Petroleum university Press,2000]
2夏文臣,张宁,袁小平,等.柴达木侏罗系的构造层序及前陆盆地演化[J].石油与天然气地质,1998,19(3):173-180[Xia Wenchen,Zhang Ning,Yuan Xiaoping,et al.Jurassic tectonic sequences of Qaid-am and foreland basin evolution[J].Oil and Gas Geology,1998,19(3):173-180]
3付国民,李永军,石京平.柴达木盆地第三纪转换裂陷盆地形成演化及动力学[J].沉积与特提斯地质,2001,21(4):34-40[Fu Guoming,Li Yongjun,Shi Jingping.Evolution and dynamics of the Qaidam tertiary transform rift basin in Qinghai[J].Sedimentary Geolo-gy and Tethyan Geology2001,21(4):34-40]
4翟光明,宋建国,靳久强,等.板块构造演化和含油气盆地形成与评价[M].北京:石油工业出版社,2002:45-48[Zhai Guangming,Song Jianguo,Jin Jiuqiang,et al.Plate Tectonic Evolution and Its Relation-ship to Petroliferous Basin[M].Beijing:Petroleum Industry Press,2002:45-48
5曹国强,陈世悦,徐凤银,等.柴达木盆地西部中-新生代沉积构造演化[J].中国地质,2005,32(1):33-40[Cao guoqiang,Chen shiyue,Xu fengyin,et al.Ceno-Mesozoic sedimentary and tectonic evo-lution in the Western Qaidam Basin[J].Geology in China,2005,32(1):33-40]
6威尔格斯C K.层序地层学原理[M].徐怀大,魏魁生,洪卫东,译.北京:石油工业出版社,1992.47-184[Wilgus C K.Sea-level Chan-ges:an integrated approach[M].Translated by Xu Huaida,Wei Kuisheng,Hong Weidong.Beijing:Petroleum Industrial Press,1993:47-184]
7邹才能,池英柳,李明,等.陆相层序地层学分析技术---油气勘探工业化应用指南[M].北京:石油工业出版社,2004[Zou Caineng,Chi Yingliu,Li Ming,et al.Sequence Stratigraphy:application to hy-drocarbon exploration[M].Baijing:Petroleum Industry Press,2004]
8顾家裕.陆相盆地层序地层学格架概念及模式[J].石油勘探与开发,1995,22(4):6-10[Gu Jiayu.Framework concepts and models of sequence stratigraphy in nonmarine petroliferous basin[J].Petroleum Exploration and Development,1995,22(4):6-10]
9赵澄林,等.油区岩相古地理[M].山东东营:石油大学出版社,2001[Zhao Chenglin,et al.Lithofacies Paleogeography in Oil Area[M].Dongying Shandong:Petroleum University Press,2001]
10邓宏文,王红亮,李熙喆.层序地层基准面的识别、对比及应用[J].石油与天然气地质,1996,17(3):177-183[Deng Hongwen,Wang Hongliang,Li Xizhe.Identification and correlation techniques ofsequence stratigraphic base-level and their application[J].Oil&Gas Geology,1996,17(3):177-183]
11郑荣才,尹世民,彭军.基准面旋回结构与叠加式样的沉积动力学分析[J].沉积学报,2000,18(3):369-375[Zheng Rongcai,Yin Shimin,Peng Jun.Sedimentary dynamic analysis of sequence structure and stacking pattern of base-level cycle[J].Acta Sedimentologica Sini-ca,2000,18(3):369-375]
12郑荣才,彭军,吴朝荣.陆相盆地基准面旋回的级次划分和研究意义[J].沉积学报,2001,19(2):249-255[Zheng Rongcai,Peng Jun,Wu Chaorong.Grade division of base level cycles of terrigenous basin and its implications[J].Acta Sedimentologica Sinica,2001,19(2):249-255]
13赵俊青,纪友亮,张世奇,等.陆相高分辨率层序界面识别的地球化学方法[J].沉积学报,2004,22(1):79-85[Zhao Junqing,Ji You-liang,Zhang Shiqi,et al.Geochemical methods of boundary identifica-tion in terrigenous high-resolution sequence[J].Acta Sedimentologica Sinica,2004,22(1):79-85]
14朱筱敏.层序地层学[M].山东东营:石油大学出版社,2000[Zhu Xiaomin.Sequence Stratigraphy[M].Dongying Shandong:Petroleum university Press,2000]
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