风城油田重18井区齐古组小层划分与对比研究
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摘要
通过地震解释资料、岩心资料、录井及测井资料对风城油田重18井区上侏罗统齐古组进行了小层划分与对比分析。研究表明,重18井区上侏罗统齐古组与上覆地层白垩系吐谷鲁群及下伏地层下侏罗统三工河组或八道湾组均为不整合接触,分界面清楚;齐古组可划分为齐二段(包括J3q12、J3q22-1、J3q22-2和J3q22-3小层)和齐三段(包括J3q13、J3q23、J3q33小层);风城油田重18井区上侏罗统齐古组地层南倾单斜,厚度较大的区域由东北向西南呈条带状分布。
By seismic data analysis,core observation,logging data and well logging data analysis in Wellblock Zhong 18 of Fengcheng Oilfield,this article divides the Qigu Formation into sub-layers and it is found out that the Qigu Formation and overlying Tugulu Formation of Cretaceous and underlying Sangonghe or Badaowan Formation of lower Jurassic are unconformable contacts.Qigu Formation of Upper Jurassic in Wellblock Zhong 18 is divided into J3q2(including smaller layers J3q12、J3q2-12、 J3q2-22 and J3q2-32)and J3q3(including smaller layers J3q13、J3q23 and J3q33);Qigu Formation in Wellblock Zhong 18 of Fengcheng Oilfield is South-dipping monocline,The thicker area is from the northeast to southwest and in banded distribution.
By seismic data analysis,core observation,logging data and well logging data analysis in Wellblock Zhong 18 of Fengcheng Oilfield,this article divides the Qigu Formation into sub-layers and it is found out that the Qigu Formation and overlying Tugulu Formation of Cretaceous and underlying Sangonghe or Badaowan Formation of lower Jurassic are unconformable contacts.Qigu Formation of Upper Jurassic in Wellblock Zhong 18 is divided into J3q2(including smaller layers J3q12、J3q2-12、 J3q2-22 and J3q2-32)and J3q3(including smaller layers J3q13、J3q23 and J3q33);Qigu Formation in Wellblock Zhong 18 of Fengcheng Oilfield is South-dipping monocline,The thicker area is from the northeast to southwest and in banded distribution.
引文
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[3]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.
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