西南石油大学学报(自然科学版)

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Seismic Sedimentology Interpretation of Delta Strata in
Maichen Depression

Liu Hongyu1,2, Zhang Xianguo3, Lin Chengyan3, Zhang Tao4, Li Shuai5   

  1. 1. College of Geoscience and Surveying Engineering,China University of Mining & Technology(Beijing),Haidian,Beijing 100083,China
    2. Geological Scientific Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou,Jiangsu 225009,China
    3. School of Geosciences,China University of Petroleum(Shandong),Qingdao,Shandong 266580,China
    4. College of Geological Science and Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China
    5. The Fourth Oil Production Plant,Zhongyuan Oilfield,SINOPEC,Puyang,Henan 457000,China
  • Online:2013-06-01 Published:2013-06-01

Abstract:

Taking Paleogene delta strata of Liusan Formation in Maichen Depression as an example,this paper probes into
seismic sedimentology study method suitable for progressive exploration stage. The sedimentary environment of the study
strata is lacustrine delta with underwater distributary channel,distributary channel mouth bar,sand sheet and so on. A new
seismic attribute is created due to the thin and lateral-instable sand bodies,and sand distribution is predicted with multi-attributes
selection and well-calculated quantitative seismic attributes analysis,and thus a preliminary understanding of the microfacies
distribution is achieved. Then phase-rotating seismic profiles and classical seismic facies analysis are employed to get fine
sedimentary facies distribution. This study builds a practical seismic sedimentology study method and workflow which can be
used in microfacies study of progressive exploration stage in other oil fields.

Key words: progressive exploration, seismic sedimentology, delta front, Maichen Depression, Liusan Formation