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泌阳凹陷复杂断裂带三维地震资料精细解释方法和效果分析
石油物探
2009年 48卷 第No. 5期
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Title
Fine interpretation method and its effect analysis for 3-D seismic data of complex fracture belt in Biyang depression
单位
(1.中国石油化工集团公司河南石油勘探局地质调查处，河南南阳473132；2.中国石油化工股份有限公司河南油田分公司石油勘探开发研究院，河南南阳473132)
Organization
Geology Survey Department,Henan Petroleum Exploration Bureau,Nanyang 473132,China
摘要
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005km2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5m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425.19×104t。
Abstract
The northern slope of Biyang depression is characterized by a series of different-scale nose-like structures;because of the cutting of faults,some faulted noses and faulted block structural traps are developed along the nose-like structures.Faulted nose structures in Xinzhuang area at the central of slope are the directional region of hydrocarbon migration,with small fault blocks,small faulted noses and unconformity reservoirs developed in the area.Aiming at the characteristics of broken structures,small trap area and small faults in the northern slope,based on the 3-D seismic data and logging data,some techniques were utilized to interpret Hetaoyuan formation of Paleogene system in Xinzhuang area,including seismic horizon calibration,3-D visualization interpretation and fault analysis by coherence cubes.The ascertained trap is bigger than 0.05km2,including small faulted nose,fault block and unconformity formation.The absolute error between interpreted depth and drilling depth of target is smaller than 5 m.some wells were deployed and drilled in terms of the interpretation results,and 60% of the wells drilled oil layers.The newly proved geological reserves are 425.19×104t.
关键词：
复杂断裂带;
三维可视化技术;
层位标定技术;
相干分析技术;
构造解释;
含油气圈闭预测;
Keywords:
complex fracture belt;
3-D visualization;
horizon calibration;
coherency cube analysis technique;
structure interpretation;
hydrocarbon traps prediction;
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