摘要
断裂带为结构复杂的三维地质体,运用地震资料对盆地内部断裂带进行精细刻画可以明确断裂在油气运聚中的具体作用。提出了一种旋转菱形体属性提取方法,利用菱形对角线具有的方向性计算不同方向的属性值,并根据不同方向属性值的变化程度来指示并刻画断层破碎带及其边界。理论模型正演模拟和珠江口HZ区块实际地震资料应用表明,该方法能够清楚地反映出生长断裂带内部结构的发育情况,与测井解释结果基本吻合,对于解释断层破碎带是可行的;将旋转菱形属性与第三代相干体技术相结合,可以精细刻画断裂带内部构造特征。
Fault zone is a three-dimensional geological body with complex internal structures. Using seismic data to describe the fault zone of a basin can define the effect of fractures on hydrocarbon migration and accumulation. A new rotating rhombus attribute extraction method is proposed, in which the attribute values of different directions can be calculated by using the directionality of rhombus＇s long diagonal, and then the fault fracture zone and its boundary can be indicated and described on the basis of change scope of different directional attribute values. The forward modeling of theoretical model and real seismic data application in HZ block of Pearl River Mouth basin show that this method can reflect the internal structures of the growth fault zone clearly, and its results coincide with well logging interpretation. Combined the rotating rhombus attribute with the third generation coherence technology, the internal structure characteristics of the fault zone can be finely described.
出处
《中国海上油气》
CAS
CSCD
北大核心
2016年第5期8-15,共8页
China Offshore Oil and Gas
基金
"十二五"国家科技重大专项"南海东部海域大中型油气田形成条件与分布(编号:2011ZX05023-006-003)"
中海石油(中国)有限公司综合科研项目"珠一坳陷浅层新领域油气成藏条件及突破方向(编号:YXKY-2012-SZ-01)"部分研究成果
关键词
旋转菱形体
性提取
精细刻画
裂带
江口盆地
rotating rhombus
attribute extraction
fine description
fault zone
Pearl River Mouth basin
