天然裂缝性特低渗砂岩油藏等效连续介质模型  

Equivalent Continuous Medium Model for Fractured Extra-low Permeability Sand Stone Reservoir

作　　者：高丽[1,2] 袁彬[1] 周晓丹[2] 刘顺[3] 李晓慧 

机构地区：[1]中国石油大学<华东>石油工程学院,山东青岛266555 [2]中石油辽河油田,辽宁盘锦124010 [3]长庆油田油气工艺研究院,陕西西安710021

出　　处：《中国西部科技》2012年第3期17-18,16,共3页Science and Technology of West China

摘　　要：针对天然裂缝发育的特低渗砂岩油藏裂缝发育的特点,利用张量理论和等值渗流阻力原理建立了天然裂缝性特低渗砂岩油藏等效连续介质模型,为定量评价天然裂缝对特低渗砂岩油藏的影响和研究该类油藏的渗流规律奠定了基础。并利用所建立的模型进行了等效渗透率影响因素分析,研究结果表明:天然裂缝显著提高了平行裂缝方向的储层渗透率,增大了特低渗砂岩油藏的渗流能力,加剧了储层的各向异性。Considering the development characteristics of extra-low permeability fractured sandstone reservoir,an equivalent continuous medium model was developed based on tensor theory and the law of equivalent seepage resistance.It provided the basis for evaluating the impact of natural fracture on extra-low permeability sandstone reservoir and the research on the seepage theory in this kind of reservoir.Influence factors were analyzed using the established model,and the results showed that natural fracture significantly increased the reservoir permeability parallel to fracture direction,improved the percolation ability of the reservoir,and aggravated the reservoir anisotropy.

关 键 词：天然裂缝 特低渗砂岩油藏 等效连续介质 数学模型 影响因素 

分 类 号：TE121.15[石油与天然气工程—油气勘探]