桥口油田翼部复杂断块群精细构造研究新认识  

New Results of Fine Structure Interpretation on Complex Fault Block Group at the Flank of Qiaokou Oilfield

作　　者：程雪彤 Cheng Xuetong(Pudong Oil Production Plant,SINOPEC Zhongyuan Oilfield Company,Puyang Henan 45700)

机构地区：[1]中国石化中原油田分公司濮东采油厂,河南濮阳457000

出　　处：《中外能源》2017年第5期44-48,共5页Sino-Global Energy

摘　　要：桥口油田翼部发育低丰度复杂断块群,受构造、火成岩等因素影响,地震资料品质不高,且未进行过精细构造解释,存在断层空间展布规律不清、小断块刻画不精细等问题。通过综合分析测井、地质、生产动态资料,应用人机联作地震解释技术精细制作合成地震记录,并进行准确的层位标定,应用地层对比成果及高精度三维地震资料,利用过井任意线、相干体及水平切片相结合的立体解释方法,整体构造再认识。研究明确了桥口构造Ⅰ期断裂为黄河Ⅰ、Ⅱ号断层,Ⅱ期断裂为李屯及原黄河Ⅲ、Ⅳ断层,Ⅲ期断裂为玉皇庙断层,其中Ⅰ、Ⅱ号断层对构造和油气起重要控制作用;黄河Ⅲ号断层为桥口油田东翼北部的西边界控制断层,黄河Ⅳ号断层由北往东偏移;桥口油田西翼内部发育的次级断层由南向北存在构造转换,由北部西倾变为南部东倾;构造断层仍是桥口油田翼部油气富集的主控因素。Complex fault block group with low abundance was developed at the flank of the Qiaokou oilfield.The quality of the old seismic data is very poor due to the effect of structure and igneous rock.There still have some problems such as the fault distribution rule is not clear and the characterization of small fault block is not fine on account of no fine structure interpretation in this area.After comprehensive analysis of logging,geology and production performance data was made,interactive seismic interpretation technique was used to make fine synthetic seismic record and to calibrate horizon accurately.By applying the achievements of layer correlation and high-accuracy 3D seismic data,new idea in geological tectonic framework was presented by means of 3D interpretation method of the combination of any line through the well,coherence,and horizontal slice.The research result shows that the fractures in stage Ⅰof Qiaokou structure are Huanghe faultsⅠand Ⅱ,those in stage Ⅱ are Litun and original Huanghe faults Ⅲ and Ⅳ,and those in stage Ⅲ are Yuhuangmiao fault.Among them,faultsⅠand Ⅱplay important role on the control of the structure and oil and gas,and Huanghe fault Ⅲ is the one controlled by western border in the north of eastern flank in Qiaokou oilfield.Huanghe fault Ⅳ migrates from north to east.Tectonic transformation occurred from south to north in the secondary fault developed at the western blank in Qiaokou oilfield as tilting toward west at the north turns to tilting toward east in the south.Tectonic fault is still the main controlling factors of oil-gas richness at the flank of the Qiaokou oilfield.

关 键 词：桥口油田 复杂断块 精细构造解释 断裂期次 断层 

分 类 号：P618.13[天文地球—矿床学]