摘要
断层生长是一个动态过程,具有典型分段生长特征。为了明确断层分段生长与"源-储"的耦合关系,以塔南凹陷东次凹TN1断裂为研究对象,以三维地震为基础,应用"两图一剥"(两图包括断距-距离曲线和断层面断距等值线,一剥是指最大断距回剥)技术可以有效识别并定量厘定主干断裂形成演化规律,深入探讨断层分段生长对洼槽结构(烃源岩)和砂体展布规律的控制作用。研究表明:主干边界断层分段生长过程决定着洼槽结构演化和构造转换带的形成;通过断距回剥技术,明确塔南凹陷东次凹TN1断裂在不同地质历史时期的洼槽结构和构造转换带类型;塔南凹陷主干边界断层具有"强烈活动段控洼槽并控优质烃源岩"和"构造转换带控砂"的特征。
Fault growth is a dynamic process with the typical characteristics of segmentation growth. To make clear of the coupling relationships between the fauh segmentation growth and ＂source-reservoir＂, taking Fault TN1 in East Subsag of Tanan sag as the researching object, based on the 3D seismic data, the forming-evolving laws of the major faults can be effectively recognized and quantitatively calibrated by means of ＂Two figures （ Slip-distance re- lations and Throw contours in the fault planes） and one-stripping （ maximum slip backstripping） ＂ technique, and moreover the controlling actions of the fault segmentation growth on the sag structures （ the source rocks ） and sand- body spreading laws can be deeply explored. The studies show that the segmentation growth process of the major boundary faults determinates the sag structural evolution and formation of the structural transferring belts; by the slip backstripping technique, the sag structures and belt types of Fault TN1 in different geological and history peri- ods have been ensured; the major boundary faults in Tanan Sag are characterized by ＂the strong-activity segments controlling the sags and high-quality hydrocarbon source rocks＂ and ＂the structural transferring belts dominating the sandbodies＂.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2015年第6期20-26,共7页
Petroleum Geology & Oilfield Development in Daqing
基金
黑龙江省杰出青年科学基金"裂陷盆地多边断层成因机制及控藏机理"(JC201304)
关键词
塔南凹陷
分段生长
主干边界断层
洼槽结构
优质储层
Tanan Sag
segmentation growth
major boundary fault
sag structure
high-quality reservoir
