砂岩储集体的地震地学层特征和沉积相分析

CHARACTERISTICS OF SEISMIC STRATIGRAPHY OF SANDSTONE RESERVOIR AND EXAMINATION OF SEDIMENTARY FACISS

南海西部石油公司

本文根据地震地层学原理和沉积特征,对BQZ盆地(BBW盆地、QDN盆地和ZJK盆地的合称)第三系砂岩储集体地震相和沉积相特征进行综合分析,结果在第三系中确定了四种主要砂岩储集体,即三角洲砂体、滨岸砂坝、河道砂体和浊积岩体。这四种砂岩储集体是砂质沉积的主要场所,也是油气聚集的有利相带。可作为进一步寻找非构造油气藏的目标。

Based on the concepts of seismic stratigraphy and depositional characteristics, an integrated analysis on the characteristics of seismic phase and sedimentary facies of Tertiary sandstone reservoir of BQZ (abbr.BBW, QDN & ZJK) basins is made. As a result, 4 major sandstone reservoirs are defined in the Tertiary, namely, deltaic sandbody, shore river bar placer, river course sandbody and turbidite sandbody. The above-mentioned 4 reservoirs are considered the places where the arenaceous rock sedimenta-ted. Also, they are believed to be the facies zones which are good for hydrocarbon accumulation. They can be taken as an another target for detecting the oil/gas pool.