Oil & Gas Geology ›› 2013, Vol. 34 ›› Issue (3): 400-406.doi: 10.11743/ogg20130318

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Structure modeling-constrained seismic inversion technology—a case study from Nanba area in Saertu oilfield,Daqing

Li Zhandong1, Li Ji1, Li Yang2, Chen Dayou3, Zhao Wei4   

  1. 1. College of Petroleum Engineering Institute, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
    2. Daqing Vocational College, Daqing, Heilongjiang 163255, China;
    3. PetroChina International (PK) Ltd. Company, Kyzylorda 120001, Kazakhstan;
    4. The Sixth Production Plant, PetroChina Daqing Oilfield Company, Daqing, Heilongjiang 163114, China
  • Received:2013-02-22 Revised:2013-05-06 Online:2013-06-28 Published:2013-07-17

Abstract: This paper introduces structure modeling-constrained seismic inversion technique.It has four key components,i.e.well-seismic integrated small scale structure interpretation,rational design of geologic framework,multi-scale grid design and curve homogenization.Take SⅡ7-12 sedimentary units in Nanba area of Daqing Saertu oilfield as an example,the article summarizes the advantages of structure modeling-constrained seismic inversion over seismic inversion without structure modeling.①It can improve the accuracy of sandbody identification,especially channel sand and realize well-seismic integrated correction of sedimentary microfacies through "defining facies in wells and shapes on slices";②It can reveal the contact relationship between major thick reservoir and the main sand body,and refine the prediction of sandbodies near faults,so as to guide remaining oil potential tapping.It is concluded that structure modeling-constrained seismic inversion can lower the uncertainty of seismic inversion and is of great significance to oilfield development adjustment in later stage.

Key words: channel sand, remaining oil distribution, seismic inversion, structure modeling, reservoir prediction, Saertu oilfield, Daqing area

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