物探化探计算技术2012，Vol.34Issue(1)：51-57,7.
AVO叠前反演在中等阻抗储层预测中的应用
颜学梅 1张哨楠 1苏锦义2
作者信息
- 1. 成都理工大学“油气藏地质及开发工程”国家重点实验室,成都610059
- 2. 中石化西南油气分公司勘探开发研究院德阳分院,四川德阳618000
- 折叠
摘要
Abstract
The TX49 sand body of Xujiahe four formation of Xinchang gas Field is sand interbedded with conglomerate reservoir. Previous exploration has proved that the sand was effective reservoir. Conventional post-stack inversion does not recognize the sandstone because of the impedance of the sandstone closed to the mudstone, and the impedance of conglomerate is far greater than the sand and mudstone. It is successful to to predict the distribution of the sand by using AVO pre-stack inversion technique with P-wave elastic impedance and Vp/Vs and rock physic property. The prediction consistent with the actual drilling results. The basic principles of pre-stack inversion was demonstrated, and the key steps in inversion were discussed, such as rock physics, wavelet extrac-tion, establishment of low-frequency trend model. The results show that the AVO prestack inversion can identify the sandstone well and reduce the exploration risk.关键词
新场气田/砂砾岩储层/中等波阻抗/AVO叠前反演Key words
Xinchang gas field/ sand and conglomerate reservoir/ medium impedance/ AVO pre-stack inversion分类
天文与地球科学引用本文复制引用
颜学梅,张哨楠,苏锦义..AVO叠前反演在中等阻抗储层预测中的应用[J].物探化探计算技术,2012,34(1):51-57,7.
