基于地震相识别的相控储层预测技术及应用——以魏岗-张店结合部为例
Prediction technology of facies controlled reservoirs based on seismic facies identification and its application:a case study of Weigang-Zhangdian area
张晓亮1
作者信息
- 1. 中国石化河南油田分公司勘探开发研究院,河南南阳 473000
- 折叠
摘要
随着勘探开发不断深入,南阳凹陷的勘探开发方向由魏岗、张店主体区逐渐向背斜翼部转移,滚动勘探目标也由构造油藏向复杂岩性油藏转变.由于魏岗-张店结合部构造较为复杂且地震资料分辨率较低,导致储层预测多解性强,为了准确识别不同岩性体和进行储层预测,以核桃园组核二Ⅱ亚段为例,通过开展地震相识别及多属性融合分析,指出魏岗-张店结合部由北向南发育的水下分流河道是储层发育的有利相带;并在此基础上,通过岩性反演提高了地震分辨率,实现了 5 m以下厚度砂体的精细刻画.可为魏岗-张店结合部勘探开发的深化提供技术支撑.
Abstract
With the deepening of exploration and development,the direction of exploration and development in Nanyang Sag has gradually shifted from the main area of Weigang and Zhangdian to the anticlinal wing,and the rolling exploration target has also changed from structural reservoir to complex lithology reservoir.Due to the complex structure of the Weigang-Zhangdian area and the low resolution of seismic data,reser-voir prediction has strong multiple solutions.Taking the second section of the Hetaoyuan Formation in the study area as an example,seismic facies identification and multi-attribute fusion analysis were carried out to improve the certainty of reservoir prediction.It was pointed out that underwater distributary channels are developed from north to south in the study area,which is a favorable facies zone for reservoir development.On this basis,the seismic resolution was improved through lithology inversion,and fine characterization of sand bodies with a thickness of less than 5 m was achieved,which provides a good technical support for the deepening of exploration and development of Weigang-Zhangdian area.
关键词
魏岗-张店结合部/复杂岩性油藏/地震相/地震属性Key words
Weigang-Zhangdian area/complex lithological reservoir/seismic facies/seismic attributes引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据