CAJ | 학술논문

塔里木盆地塔北某区块奥陶系碳酸盐岩地质年代老，地层埋深大，原生基质孔隙发育较差，其储层的有利分布区多受断裂控制。因此，对该区断裂进行精细预测显得尤为重要。针对断裂精细预测难度较大这一实际问题，选用近年来颇受关注的地震曲率技术，运用曲率原理和基于层面的地震曲率属性对研究区奥陶系一间房组顶界进行断裂预测，从常用的几种地震曲率中优选出最小负曲率和最大正曲率对断裂进行刻画，取得了较好的应用效果。通过地震剖面和基于层面的地震曲率属性平面图的交互分析发现，所预测的断裂级别、性质及走向都有较好的对应关系。
탑리목분지탑북모구괴오도계탄산염암지질년대로，지층매심대，원생기질공극발육교차，기저층적유리분포구다수단렬공제。인차，대해구단렬진행정세예측현득우위중요。침대단렬정세예측난도교대저일실제문제，선용근년래파수관주적지진곡솔기술，운용곡솔원리화기우층면적지진곡솔속성대연구구오도계일간방조정계진행단렬예측，종상용적궤충지진곡솔중우선출최소부곡솔화최대정곡솔대단렬진행각화，취득료교호적응용효과。통과지진부면화기우층면적지진곡솔속성평면도적교호분석발현，소예측적단렬급별、성질급주향도유교호적대응관계。
The Ordovician carbonate rocks in an area of Tarim Basin are characterized by old geological age, large burial depth and poor developed primary matrix pores, and the favorable reservoir distribution is controlled by faults. So it is very important to carry out the fine prediction of fault in this area. The seismic curvature technique based on horizon was used to predict the fault at the top boundary of Ordovieian Yijianfang Formation. The minimum negative curvature and maximum positive curvature were selected from the commonly used seismic curvatures to describe the fault, and the result shows the good effects. Through the interactive analysis of seismic profile and plane map of seismic curvature based on horizon, it is found that there are good corresponding relations among the level, nature and strike of the predicted faults.