摘要
基于碳酸盐岩储层裂缝系统岩石物理实验研究,裂缝系统具有明显非线性特征,采用裂缝非线性预测技术对ZC构造嘉四1-嘉三储层裂缝发育带进行精细刻画。ZC构造嘉陵江组嘉四1~嘉三储层裂缝展布分为三个带,两个主要裂缝发育区块,并分为五级,裂缝展布特征与构造特征及断层分布密切相关。应用地震优化非线性反演方法对嘉四1-三段储层过井剖面进行了速度反演,获得了高分辨率速度反演剖面,清晰而详细地反映了嘉四1-三段储层的变化特征,有效地提高了储层预测效果,实际钻探证明,研究区有效裂缝富集区与天然气富集区具有对应关系;在利用构造特征、地震反射特征、速度特征及非线性参数特征对嘉四1-嘉三储层预测研究的基础上,为研究区的勘探开发提供科学基础与依据,具有重大的实际经济意义。
Based on the rock physics experiment of fracture system of carbonate reservoir,the fracture system has obvious non-linear characteristics.The fracture development zone in ZC structure is subtly described through the method of non-linear fracture prediction technique.The fractured spatial distribution of T1j1^4-T1j^3 reservoir is divided into three fractured zones,and two major fractures,and is divided into five different levels,the characteristic of the fracture distribution is closely related to the tectonic characteristics and fault distribution.A high resolution velocity inversion profile is obtained by using the seismic nonlinear inversion method,which reflects the changes of the characteristics of Jialingjiang Formation T1j1^4-T1j^3 of ZC structure clearly and in detail,and improves the result of the reservoir prediction.The results show that the effective fracture-rich area has the corresponding relationship with the natural gas-enriched area in the study area.Based on the reservoir prediction of Jialingjiang Formation T1j1^4-T1j^3 of ZC structure through the method of structural characteristics,the seismic reflection characteristics,the velocity characteristics and the non-linear parameter characteristics,which provide scientific basis for the exploration of the study area and has a great practical and economic significance.
出处
《物探化探计算技术》
CAS
CSCD
2016年第6期746-750,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金(41274129)
关键词
嘉陵江组
碳酸盐岩
裂缝
非线性预测
有效裂缝富集区
Jialingjiang Formation
carbonate
fracture
non-linear prediction
effective fracture abundance zone
