摘要
莺歌海盆地乐东区莺歌海组一段是重要的天然气勘探目的层,其储集体特征及成因分析对于盆地浅层勘探具有重要意义。通过对乐东S-1气田主力产层莺歌海组一段储集体沉积背景、岩心资料、测井及地震资料的综合研究,认为莺歌海组一段储集体为"强制海退形成沉积坡折背景下的滨岸-浅海沉积体系"。储层骨架砂岩主要发育在沉积坡折之上,为滨岸相临滨滩坝复合砂岩,沉积坡折以下多以浅海相泥岩、泥质粉砂岩为主,储层不发育。储集体具有"纵向多期旋回叠置、平面NW-SE向条带展布"的特征。
The first member of Yinggehai Formation in Ledong Area of Yinggehai Basin was an important gas exploration target layer,the reservoir genesis and its characteristics was of great significance for shallow layer exploration in the basin.Based on the integrated analysis of reservoir sedimentary background,core data,well logging and seismic data,it was considered that Yinggehai Formation Reservoir is a 'forced regressive formation sedimentary slope under the background of shore to shallow sea sedimentary system',the reservoirs are mainly developed in the framework above the slope of sandstone sedimentary,it was Shoreface beach bar sandstone,beneath the sedimentary slope,there are neritic facies mudstone,argillaceous siltstone,where reservoirs are developed.The reservoir has the characteristics of 'vertical multi-cycle overlay',and it is distributed in NW-SE in the plane.
出处
《石油天然气学报》
CAS
CSCD
2012年第9期18-22,10,共5页
Journal of Oil and Gas Technology
关键词
莺歌海组一段
滨岸-浅海沉积体系
沉积特征
沉积坡折
临滨滩坝复合体
1st member of Yinggehai Formation
shore to shallow sea sedimentary system
sedimentary characters
sedimentary slope
combination of shore facies shoreface beach bar sandstone
