摘要
前人普遍认为:不同的储集层,其束缚水饱和度与砂岩类型和孔隙度、孔隙结构有关,粒度中值和孔隙度对束缚水的影响最大。研究表明:储层束缚水饱和度大小不仅取决于储层本身因素,还取决于储层之外其他的因素,这些因素主要包括成藏动力,油气成藏后的沉积压实作用。研究还表明:微孔隙不完全由束缚水占据,这种微孔隙中有时是含油气的,这部分油气在后期的储层改造中甚至有可能对产能作出贡献。对于某一特定的储层,微孔隙体积的多少是一定的,与总孔隙度之间关系十分密切,但储层的束缚水饱和度却是不定的,束缚水含量的多少取决于成藏动力的大小及成藏后沉积压实作用的强弱。
The former commonly think： irreducible water saturation of different reservoir is in connection with sandstone type, porosity, pore texture,median size and porosity are the highest affecting factors to irreducible water saturation, the research demonstrates：the value of irreducible water saturation of reservoir is not only depended on the charater of reservoir,but also on the other factors, these factors include ：the drive of forming reservoir ,sedimentary compaction after the reservoir formed. In addition,the research result also demonstrates micropore is incompletely occupied by the irreducible water,this kind micropore sometimes may be hydrocarbon hearing ,this part of hydrocarbon maybe make contribution to the deliverability after the reservoir is reconstructed. For particular reservoir, the volume of micropore is invariable,the relationship between micropore volume and total porosity is bound ,but the irreducible water saturation of reservoir is varlable,the content of irreducible water is depended on the strength of the drive of forming reservoir and the sedimentary compaction after the reservoir formed.
出处
《内蒙古石油化工》
CAS
2009年第2期139-141,共3页
Inner Mongolia Petrochemical Industry
关键词
束缚水饱和度
成藏动力
孔隙结构
微孔隙
有效孔隙
Irreducible Water
the Drive of Forming Reservoir
Pore Texture
Micropore
Effective Pore
