True structure recovery and internal cycle division for glutenite bodies in the steep slop zone of faulting-depression basin-a middle-shallow near-shore fan example in the northern Chezhen Sag
Song Liang, Zhang Ying-ge, Su Chao-guang, Wang Nan, Zhang Xiu-juan
Geophysical Research Institute,Shengli oilfield Company Ltd.of Sinopec,Dongying City,Shandong Province,257000,China
Abstract：The near-shore fans in the steep zone of north Chezhen Sag have the characteristics of shallow burial depth and excellent reservoir performance,the key factors which affect the exploration in this areas are confirmation of the structure shape and the recognition of location of the seal layer's development.By conducting forward modeling for the near-shore fans,the reason for generation of the velocity pitfall was analyzed,the quantitative corresponding relationship between seismic reflection and real strata were understood,by integrated with structure variable-velocity mapping technique,the recovery of the gravel bodies was completed,the inner cyclones inside the fans were classified by using well-seismic time-frequency analysis,so the sequence characteristics of the favorite seal layer were further understood.The application results of the technique show that the structure trap by variable-velocity mapping was further confirmed,well-seismic time-frequency analysis technique could effectively guide the classification of rubble body inner cyclones,and determine the location of the favorite seal layer's development.
宋亮, 张营革, 苏朝光, 王楠, 张秀娟. 断陷湖盆陡坡带砂砾岩体构造恢复与内幕旋回划分——车镇凹陷北部陡坡带中浅层近岸扇体实例[J]. 石油地球物理勘探, 2010, 45(增刊1): 117-120.
Song Liang, Zhang Ying-ge, Su Chao-guang, Wang Nan, Zhang Xiu-juan. True structure recovery and internal cycle division for glutenite bodies in the steep slop zone of faulting-depression basin-a middle-shallow near-shore fan example in the northern Chezhen Sag. OGP, 2010, 45(增刊1): 117-120.
