物探与化探2018，Vol.42Issue(3)：589-593,5.DOI:10.11720/wtyht.2018.1379
石臼坨凸起陡坡带高速异常区时深转换研究
A study of time-depth conversion of high-velocity anomaly area in the steep slope zone of Shijiutuo uplift
秦童 1蔡纪琰 1王改卫 1薛明星1
作者信息
- 1. 中海石油(中国)有限公司天津分公司 渤海石油研究院,天津 300459
- 折叠
摘要
Abstract
Time-depth conversion is an important link in the use of seismic data for structural and reservoir interpretation.Previous re-searchers carried out a lot of fruitful work by using different methods in different geological conditions.However,the high-velocity anoma-ly caused by the near-source fan on the steep slope of the uplift has the characteristics of limited distribution,significant anomaly and a-cute change.There are some problems in the applicability of the conventional time-depth conversion method.According to the specific ge-ological conditions of the study area,this paper proposes the technical countermeasures of time-depth conversion of the high-velocity a-nomaly area in Dongying Formation strata of the steep slope zone of Shijiutuo uplift.Based on an analysis of the genesis,the seismic phase technology is used to describe the high-velocity anomaly zone boundary;the seismic velocity anomaly identification technique de-scribes the high-velocity anomaly amplitude;combined with the seismic phase,the seismic velocity and the well depth error,this method achieves the time-depth conversion,and finally obtains a more geologically meaningful time-depth conversion result.The practical appli-cation shows that the method is consistent with the conventional one in the constant velocity region,and is more consistent with the geo-logical regularity in the anomaly area.Therefore,this methods has achieved good effect in the time-depth conversion which can strongly support the reserve evaluation of the oil and gas structure.关键词
石臼坨凸起/陡坡带/东营组/横向高速异常/时深转换Key words
Shijiutuo uplift/steep slope zone/Dongying Formation/horizontal high-velocity anomaly/time-depth conversion分类
天文与地球科学引用本文复制引用
秦童,蔡纪琰,王改卫,薛明星..石臼坨凸起陡坡带高速异常区时深转换研究[J].物探与化探,2018,42(3):589-593,5.
