油藏边界 （reservoir limit） 通常将油水界面与油层的交线定义为油藏边界 其与油层顶面的交线称为油藏的外边界，与底面的交线称为油藏的内边界。对于正常的背斜油藏其内边界以内无水；外边界无油，内边界与外边界间上部为油下部为水。
油藏边界主要包括油水界面、岩性边界和断层边界等。
The reservoir boundary includes oil-water contact, lithologic boundary and fault limit.
油藏几何形状特别是油藏边界对井底压力动态响应有显著的影响。
Reservoir geometry especially such as reservoir boundary significantly influences dynamic response in underground flow.
绘制了不同油藏边界下，具有不同裂缝几何特征的压裂水平井典型试井曲线，并对特征曲线进行了流动期分析。
According different fracture geometrical characters, this paper presents a lot of typical pressure curves and analyzes the flow period of these curves.
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