Oil & Gas Geology ›› 2016, Vol. 37 ›› Issue (5): 786-791.doi: 10.11743/ogg20160519

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Seismic prediction of fault damage zones in carbonates in Halahatang area,Tarim Basin

Wan Xiaoguo1, Wu Guanghui2, Xie En1, Zhang Yintao1, Gao Lianhua1   

  1. 1. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xingjiang 841000, China;
    2. School of Marine Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
  • Received:2015-07-22 Revised:2016-07-10 Online:2016-10-08 Published:2016-11-07

Abstract: Carbonate fault zone often has relatively wide damage zone,which is favorable for the development of fracture-cave system,and its identification and prediction is of great significance for oil/gas target optimization.On the basis of well-seismic responses analysis of the Ordovician carbonates in Halahatang area of the Tarim basin,comparative analysis of various seismic techniques reveals that the carbonate fault fractured zone can be identified and described by using coherent enhancement technique(AFE) and fracture seismic facies analysis technique,combining with the seismic root-mean-square amplitude,seismic curvature and fracture-cave system description.The results show that the carbonate fault damage zones are in stripped,fan-shaped distribution along the fault zone,generally with a width of 200-2 500 m,which have good agreement with the well data.The fault fractured zone controlled the distribution of large scale fracture-cave system,and the wider the damage zone is,the larger the fracture-cave system is.

Key words: damage zone width, strike-slip fault, carbonate rock, Tarim Basin

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