物探与化探2024，Vol.48Issue(3)：768-776,9.DOI:10.11720/wtyht.2024.1321
基于改进广义S变换时频分析的"板状"断控油藏油柱高度预测
Prediction of oil column heights in fault-controlled tabular reservoirs through time-frequency analysis based on improved generalized S-transform
摘要
Abstract
The fault-controlled carbonate area in the northern depression of the Tarim Basin possesses abundant oil and gas resources.Identifying the oil-water contact(OWC)of fault-controlled tabular reservoirs is critical for their effective exploitation.However,OWC i-dentification through drilling is costly and challenging.In contrast,it is efficient to identify the OWC using geophysical methods.This study proposed a time-frequency analysis method based on generalized S-transform.As revealed by the joint analysis of extensive time-frequency analysis results of through-well seismic channels and production performance analysis data,the depth/time-varying main fre-quency of seismic data is positively correlated with the oil layer thickness.Hence,this study proposed to identify the OWC using the ab-normal inflection point of the energy envelope of seismic channel time-frequency gather.Experimental results demonstrate that oil layer thickness results obtained are uncertain,generally reliable,and reliable in the case of oil column height(OCH)<120 m,120 m≤OCH≤250 m,and OCH≥250 m,respectively.The method proposed in this study was applied to a fault fracture zone of an area of the Fu-man oilfield,obtaining the main predicted oil layer thicknesses between 200 m and 520 m,aligning with the actual exploitation results.Therefore,the method of this study can be employed to guide exploitation.关键词
断裂破碎带/断控油藏/油层厚度/地震探测/时频分析/塔里木盆地Key words
fracture zone/fault-controlled reservoir/oil layer thickness/seismic survey/time-frequency analysis/Tarim Basin分类
天文与地球科学引用本文复制引用
袁晓满,李相文,张洁,但光箭,卢忠沅,韩重阳,张磊,许建洋..基于改进广义S变换时频分析的"板状"断控油藏油柱高度预测[J].物探与化探,2024,48(3):768-776,9.基金项目
国家重点研发计划项目"非常规油气地震波探测中规模数据的工业化应用"(2020YFA0713404) （2020YFA0713404）
东方地球物理公司重点科研项目"中西部叠合盆地走滑断裂地震识别技术及成藏控制作用研究"(03-02-2022) （03-02-2022）
