Previous Articles     Next Articles

Comparison of OBC Seismic Data Acquisition Geometries

Wang zhe1,Yang Zhiguo1,Gong Xudong1, Zhang Jianfeng2, Zhou Bin2, Gao Qi2   

  1. 1 CNOOC EnerTech-Drilling & Production Co.; 2 CNOOC (China) Tianjin Company
  • Online:2014-08-15 Published:2014-08-15

Abstract: With the exploration technological progress continually made in offshore oil seismic exploration field, the requirements on seismic data acquisition geometry have become higher and higher. It is necessary to choose the most appropriate data acquisition geometry. Based on the study of the attributions of the geometry, this paper analyzes and compares the two geometries of PATCH and Orthogonal, which are widely used in submarine cable seismic exploration, in terms of such attributions as azimuth, offset distribution, folds and acquisition footprint, and folds decreasing area. Then it summarizes the advantages and disadvantages of the two geometries in seismic data acquisition. In addition, the practice indicates that analysis of the attributions of geometry can provide the effective method and basis for selection of geometry according to the different geological exploration tasks and environmental conditions.