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| Vertical observation method for implementation of width azimuth and high density 3D collection |
| BAI Xu-Ming1, YE Qiu-Yan2, YUAN Sheng-Hui1, CHEN Jing-Guo1, ZHU Min2, LI Hai-Dong1, LIU Xi2, LIU Ying1 |
1. Huabei Geophysical Exploration Department, BGP INC., China National Petroleum Corporation, Renqiu 062552, China;
2. Geophysical Exploration Research Institute of PetroChina, Huabei Oilfield Company, Renqiu 062552, China |
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Abstract Seismic exploration has been conducted fairly well in eastern China, and has mostly entered into the second 3D and 3D seismic acquisition phase. With the development of such geophysical technologies as width azimuth and high-density acquisition method, a accurate migration image is required to improve substantially velocity analysis accuracy. If the acquisition cost is not increased in eastern China, such an aim can't be achieved. Therefore, this paper presents a width azimuth and high density acquisition method, which was applied to Z42 burial hill structure in Jizhong depression. This method could position the viewing direction of objective 3D acquisition perpendicular to directions of the second 3D by means of 3D data amalgam of different periods, so as to achieve width azimuth and high-density data sampling and eventually improve seismic imaging results.
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Received: 24 September 2013
Published: 10 August 2014
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