论文部分内容阅读
泌阳凹陷北部斜坡带发育一系列规模不同的鼻状构造,由于断层的切割,在鼻状构造背景上发育了多个断鼻、断块群圈闭。位于北部斜坡带中部新庄地区的断裂鼻状构造是油气运移的指向区,发育有小断块、小断鼻和地层不整合油藏。针对北部斜坡带构造破碎、圈闭面积小、断层小等特点,以三维地震资料和测井资料为基础,利用地震层位标定、三维可视化解释、相干体断层分析等技术对新庄地区古近系核桃园组进行了构造精细解释,发现并落实了面积大于0.05km~2的小断鼻、断块和地层不整合等圈闭,解释目的层深度与钻井深度的绝对误差在5 m以内。根据解释结果,部署钻探了多口井,有60%的井钻遇油层,新增探明石油地质储量425.19×10~4t。
A series of nose structures with different scales are developed in the northern slope of Biyang depression. Due to the fault cutting, a number of broken nose and fault block traps are developed on the nasal tectonic setting. The fault nose structure located in the Xinzhuang area in the central northern ramp zone is the point of hydrocarbon migration. There are small fault blocks, small cut-offs and unconformity reservoirs. According to the characteristics of the northern slope belt such as crushed structure, small trapping area and small fault, based on the 3D seismic data and well logging data, the authors use the techniques of seismic horizon calibration, 3D visualization and coherence tomography to analyze the paleogene The detailed interpretation of the structure of the Walnut Formation shows that small faults such as small fault nose, fault block and unconformities such as stratum faults larger than 0.05 km 2 have been discovered and implemented. The absolute error between target depth and drilling depth is within 5 m. According to the interpretation results, many wells have been drilled and drilled. 60% of the wells have been drilled into the oil layer and new proved geological reserves of 425.19 × 10 ~ 4t have been added.