Lithologic Reservoirs ›› 2012, Vol. 24 ›› Issue (1): 92-96.

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Application of seismic curvature based on horizon to carbonate fault prediction: An example of an area in Tabei, Tarim Basin

CUI Lijie1， HE Youbin1， WANG Jinxi2， WANG Zhenqing2， HU Zaiyuan2   

  1. 1. School of Geosciences， Yangtze University， Jingzhou 434023， China； 2. PetroChina Research Institute of Petroleum Exploration & Development-Northwest， Lanzhou 730020， China
  • Online:2012-02-20 Published:2012-02-20

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Abstract:

The Ordovician carbonate rocks in an area of Tarim Basin are characterized by old geological age, large burial depth and poor developed primary matrix pores, and the favorable reservoir distribution is controlled by faults. So it is very important to carry out the fine prediction of fault in this area. The seismic curvature technique based on horizon was used to predict the fault at the top boundary of Ordovician Yijianfang Formation. The minimum negative curvature and maximum positive curvature were selected from the commonly used seismic curvatures to describe the fault, and the result shows the good effects. Through the interactive analysis of seismic profile and plane map of seismic curvature based on horizon, it is found that there are good corresponding relations among the level, nature and strike of the predicted faults.

Key words: volcanic rocks, source rocks, reservoir, seal, reservoir types, Subei exploration area

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