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| THE SEISMIC REFLECTION MODE OF BED SET PⅠ IN THE WEIXING OILFIELD BASED ON SAND BODY DEVELOPMENT |
| ZHANG Mei-ling1, LI Yu1, ZHANG Shi-qi2, ZENG Ke1 |
1. Geophysics of Northeast Petroleum University, Daqing 163318, China;
2. Qingxin Oilfield Development Co. , Ltd. , Dangqing 163403, China |
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Abstract Bed set PⅠ is the main reservoir group in the Weixing Oilfield,characterized by thin thickness of single sand layer and poor spatial continuity.Bed set PⅠ can be divided into 3 composite units,which can be well reflected by the seismic wave shape.Well logs have perfect identification capacity for sedimentary micro-facies.The unit with channel or river dam sand body is defined as sand body development, and that without channel or river dam sand body is assigned to interbed development.The authors investigated the corresponding relationship between sedimentary micro-facies identified by well log data of 100 wells in 3D survey of the Weixing Oilfield and the seismic wave shape and,on such a basis,established 8 types of sand body reflection mode of seismic wave.According to the mode,sand body development can be derived for the exploration blank area of Bed set PⅠ of the Weixing Olilfield.The results provide technological support for the deployment of favorable well locations.
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Received: 18 October 2011
Published: 10 October 2012
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