摘要
为了对低渗透油田的开发有进一步的认识,通过室内实验分析了肇州油田州201试验区岩性特征、孔隙度、渗透率、储层敏感性和流体流动规律。结果表明:州201试验区扶余油层属低孔、特低渗透储层,平均有效喉道仅0.34μm,可动流体饱和度30%左右,束缚水饱和度40%以上,残余油饱和度20%以上,驱油效率低于40%;储层渗流能力差,储层具有中等偏强的水敏和压敏、中等偏弱的酸敏和碱敏、弱速敏特征,开发过程中易引起油层伤害。
In order to have further understanding of the development of low permeability oil fields,lithologic feature,porosity,permeability,reservoir sensitivity and rule of flow pattern of test area 201 of Zhaozhou oilfield are investigated.It provides that：the Fuyu oil layer of test area 201 is of low porosity and low permeability reservoir.Average effective throat is only 0.34 μm,movable fluid saturation is about 30%,irreducible water saturation is more than 40%,residual oil saturation is over 20% and oil displacement efficiency is less than 40%.The reservoir is of poor percolation ability,medium to strong side of the water sensitive and pressure sensitive,medium to weak side of acid sensitivity and alkali sensitivity and weak-speed sensitivity.It is easy to cause damage to oil layer in the development process.
出处
《科学技术与工程》
2010年第35期8776-8779,共4页
Science Technology and Engineering
关键词
低渗透油田
岩性特征
储层敏感性
流体流动规律
low permeability oilfield lithologic feature reservoir sensitivity rule of flow pattern
