调查半径与地层损害之关系  

The Relationship between Investigation Radius and Formation Damage

作　　者：王新海[1] 雷霆[1] 杨继辉[2] 雷胜林[2] 

机构地区：[1]江汉石油学院 [2]塔里木石油勘探开发指挥部

出　　处：《油气井测试》2002年第3期1-2,共2页Well Testing

摘　　要：调查半径与地层损害的程度及范围有关 ,通过研究得到了地层受到损害时的调查半径 ,从而得到调查半径与地层损害的关系。井底附近地层渗透率降低程度、范围愈大 ,调查半径愈小 ;地层损害表皮系数愈大 ,损害半径愈大 ,则调查半径愈小。当地层受到严重损害时 。Investigation radius is in relation to the degree and range of formation damage. By study,the investigation radius of the damaged formation have been obtained. The relationship between investigation radius and formation damage has be found. Beside a bottom hole,the more the degree and range of reduction of formation permeability,the less the investigation radius, the more the skin factor of formation damage, the more the damage radius and the less the investigation radius. If the formation has been damaged heavily, the influence to the investigation radius of the reduction of permeability or skin factor should be considered.

关 键 词：调查半径 地层损害 油气地质 渗透率 表皮系数 复合地层 试井 

分 类 号：TE258[石油与天然气工程—油气井工程] TE353