论文部分内容阅读
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 ,应考虑渗透率降低或表皮系数对调查半径的影响
The investigation radius is related to the extent and scope of formation damage, and the radius of the investigation when the formation is damaged is obtained through the research so that the relationship between the survey radius and formation damage can be obtained. The lower the permeability of the strata near the bottom of the well, the larger the range is and the smaller the survey radius is. The larger the damage index is, the smaller the radius of the survey is. When the formation is severely damaged, consideration should be given to the effect of reduced permeability or skin factor on the survey radius