摘要
以松辽盆地北部汪深1区块为例,对火山岩岩性、岩相特征进行了深入分析,探讨了火山岩相类型与储层发育特征的关系,进而对火山岩储层发育特征进行了分析和预测。研究表明,汪深1区块营城组火山岩分为火山通道相、爆发相、溢流相、火山沉积相等4种岩相类型,其中以爆发相和溢流相为主,并据此建立了火山岩喷发模式。该区火山岩发育6种储集空间类型,火山岩储层主要受控于岩性、岩相和成岩后作用的影响,其中有利的储层主要分布在溢流相上部亚相自碎角砾状熔岩以及爆发相空落亚相的普通火山角砾岩带中。对孔、缝的形成及保存有利的成岩作用主要有冷凝收缩作用、挥发份逸散作用、溶解作用和构造作用。最后对该区火山岩储层进行了评价,该区主要分布Ⅱ,Ⅲ类储层。
The volcanic lithofacies and reservoir characteristics in Wangshen 1 block in northern Songliao Basin are analyzed. The volcanic lithofacies of Yingcheng Formation in Wangshen 1 block can be divided into volcanic vent facies, eruptive facies, overflow facies and volcanic sedimentary facies. The main lithofacies are eruptive facies and overflow facies. Based on this division, the volcanic eruption model is established. There are six types of volcanic reservoir space in this area. The volcanic reservoir is mainly controlled by lithology, lithofacies and postdiagenesis. The favorable reservoir mainly distributed in the band of autoclastic lava in the upper subfacies of effusion and in the common volcanic breccia in eruption air fall subfacies. Condensation, effusion of residual liquid,dissolution and tectogenesis are the main advantageous diagenesis for the formation and conservation of pore and seam. The volcanic reservoir in this area is evaluated, and it can be mainly divided into type Ⅱ and type Ⅲ reservoir.
出处
《岩性油气藏》
CSCD
2009年第3期1-6,共6页
Lithologic Reservoirs
关键词
汪深1区块
火山岩相
储层评价
松辽盆地
Wangshen 1 block
volcanic lithofacies
reservoir evaluation
SongliaoBasin
