Application of high resolution seismic technique in recognizing incised valley,an interpretation case study for Quantou Formation in Xinshugang area,Songliao Basin
Guo Xue-bin, Li Zi-shun
Research Institute of Petroleum Exploration and Development,Daqing Company Ltd.of Petrochina,Daqing City,Helongjiang Province,163712,China
Abstract:The incision and deposition of the incised valley often cause unconformity contact with the underlying strata,forming a unique geometric shape and filling characteristics.Based on the 3D seismic data with wide frequency band and high-resolution,the incised valley of the Quantou Formation in Xingshugang area in the Northern Songliao Basin was recognized in this paper,after discussing the geometrical structure and frequency amplitude characteristics of the seismic reflection from the typical incised valley,the incised valley development zone in the Quantou Formation was predicted through well-seismic correlation,3D seismic fine interpretation and 3D visualization analysis,providing foundation for determining sequence boundary and their properties.The study results showed that the incised valley sediments are the clastic sediments at low-stand and late period The channel sand reservoir inside the incised valley are relatively developed,and the unconformity surface of the incised valley is the favorable pathway for oil and gas migration,so the channel sands inside the incised valley are the main place for the migration and accumulation of oil and gas.
郭学斌, 李子顺. 应用高分辨率地震技术识别下切谷——松辽盆地杏树岗泉头组解释实例[J]. 石油地球物理勘探, 2010, 45(增刊1): 154-157.
Guo Xue-bin, Li Zi-shun. Application of high resolution seismic technique in recognizing incised valley,an interpretation case study for Quantou Formation in Xinshugang area,Songliao Basin. OGP, 2010, 45(增刊1): 154-157.