A method for source array design based on the phased-array theory
XU Feng1, LIU Fu-lie1, LIANG Xiang-hao2,3
1 College of Resources and Environment,Southwest University,Chengdu,Sichuan,610500,China;
2 PetroChina Tarim Oilfield Company,Korla,Xinjiang,841000,China
Abstract：For complex surface seismic exploration,source arrays are widely used to eliminate interference and improve shot record quality.The array length of 2D phased source or the array area of 3D phased source determines the beam width of directional seismic waves,namely the energy directional focus state.Using the phased-array theory in military field,this work discusses a method for source array design by controlling the shoting time or the shoting depth to realize phase control.By designing an optimal source array,divergent spread seismic waves focus on a certain direction,namely synthesis directional beam.In this case,reflected energy level received by the acquisition system will be increased,and the signal-to-noise ratios of the data will also be enhanced.
徐峰, 刘福烈, 梁向豪. 基于相控理论的炮点组合设计技术[J]. 石油地球物理勘探, 2011, 46(2): 170-175.
XU Feng, LIU Fu-lie, LIANG Xiang-hao. A method for source array design based on the phased-array theory. OGP, 2011, 46(2): 170-175.
