恒速压汞技术在储层孔隙结构特征研究中的应用—以克拉玛依油田七中区及七东区克下组油藏为例  

APPLICATION OF CONSTANT-VELOCITY MERCURY-INJECTION TECHNOLOGY TO STUDYING POROUS STRUCTURE OF RESERVOIR: AN EXAMPLE FROM KEXIA FORMATION IN 7 MIDDLE AND EAST AREAS OF KARAMAY OILFIELD

作　　者：伍小玉[1] 罗明高[1] 聂振荣 周零飞[3] 

机构地区：[1]西南石油大学,610510 [2]中国石油集团西部钻探工程有限公司克拉玛依钻井公司 [3]中国石油新疆油田公司勘探开发研究院

出　　处：《天然气勘探与开发》2012年第3期28-30,83,共3页Natural Gas Exploration and Development

摘　　要：以克拉玛依油田七中区及七东区克下组油藏为例,将恒速压汞技术应用于储层微观孔隙结构进行分析研究中,可得到孔隙与喉道的大小及其分布频率等参数,并可具其分析孔隙大小、孔隙体积、喉道大小及孔喉比等参数对微观孔隙结构的影响。实验结果表明,克拉玛依油田七中区和七东区克下组砾岩储层孔隙半径分布频率随渗透率的变化不明显,与喉道半径分布特征有明显的区别,说明控制储层岩样内流体渗流特征的主要因素是喉道,而不是孔隙。In 7 middle and east areas of Karamay oilfield,Kexia Formation is taken as an example in this paper.A constant-velocity mercury-injection technology is applied to analyzing the microscopic porous structure of reservoir.Some parameters of pore and throat size along with their distribution frequency are obtained.Finally,the effect of pore size and volume,throat size and pore-throat ratio on microscopic pore structure is analyzed.Results show that for the Kexia conglomerate reservoir,its distribution frequency of pore radius changes with permeability unobviously;however,it is very different from that of throat radius.All illustrates the main factor controlling percolation of reservoir fluid is throat not but pore.

关 键 词：微观孔隙结构 恒速压汞 喉道 克拉玛依油田 

分 类 号：P618.13[天文地球—矿床学]