摘要
目的：研究该油藏笼统注水井中吸水小层的渗透率下限。方法：以典型注水井的吸水剖面为标准，结合单井射开小层的渗透率值，在直角坐标上制作出小层吸水状况与其渗透率的关系图版。结果：得到注水井吸水小层的最大渗透率与其渗透率下限的直线方程。结论：笼统注水井中渗透率对小层吸水的影响很大，当小层渗透率低于该井最大射开渗透率的1／3时，说明该小层基本不吸水。
The way of chart plotting of water injectivity permeability for extra-low permeability reser-voir is presented in this paper. Sub-layer's permeability is calculated by using the data of interval transit time andnatural gamma read from logging diagrarn for typical injection profiles. Then a final linear equation is obtained ina rectangular grid between the maximum permeability and the low limit of the permeability fOr detedrining thewater injectivity of sub-layers in an injection well. This chart is verified with a high coincidence rate.
出处
《断块油气田》
CAS
1998年第6期42-43,47,共3页
Fault-Block Oil & Gas Field
关键词
低渗透油气藏
渗透率
油气藏
渗流力学
吸水
Low permeability, Permeability, Typical curve graph, Injectivity profile, Weicheng Oilfield
