石油物探2017，Vol.56Issue(6)：841-852,12.DOI:10.3969/j.issn.1000-1441.2017.06.010
赤道几内亚湾深水海域基于部分叠加角道集的地震烃类检测
Seismic hydrocarbon detection based on partial stack angle gathers in offshore deep-water of the Equatorial Guinea Bay
摘要
Abstract
Exploration of hydrocarbons in offshore deep-water reservoirs using seismic data is a highly relevant task.However,detection by a single attribute or parameter of seismic data leads to a high level of uncertainty.Here we use an example of the deepwater sedimentary hydrocarbon reservoir of the Gulf of Equatorial Guinea to detect hydrocarbons based on partial stack angle gathers.We used five techniques for hydrocarbon exploration,namely,seismic amplitude and frequency attribute,spectrum decomposition,waveform classification and crossplot analysis of far offset stack and near offset stack data.The distribution of hydrocarbons in the study area was detected using the abovementioned techniques,and the predicted results agreed with the drilling data and the known reservoir fluid distribution.Moreover,we discovered that the proposed method can effectively eliminate false bright spot anomalies and other non-gas bearing prospects,thus improving the accuracy and reliability of hydrocarbon detection,which can support seismic hydrocarbon exploration in offshore deep-water sedimentary hydrocarbon reservoirs.关键词
油气检测/振幅属性/频率属性/分频技术/波形分类/交会分析/海洋深水油气勘探Key words
hydrocarbon detection/amplitude attribute/frequency attribute/spectrum decomposition/waveform classification/cross-plot analysis/offshore deep-water exploration分类
天文与地球科学引用本文复制引用
左国平,吕福亮,范国章..赤道几内亚湾深水海域基于部分叠加角道集的地震烃类检测[J].石油物探,2017,56(6):841-852,12.基金项目
中国石油科学研究与技术开发项目“海外海域油气地质条件与关键评价技术研究”(2016D-4303)资助.This research is financially supported by Petrochina Science Research and Technology Development Project "Study of petroleum geological conditions and key evaluation technologies in overseas offshore areas" (Grant No.2016D-4303). （2016D-4303）
