Hydraulic fracturing has become the common and effective stimulation to exploit low permeable reservoirs. Well test plays special role in the performance analysis of fractured Wells.

水力压裂已成为开发低渗透油气藏的较为常用且相当有效的增产措施，试井在分析压裂井动态方面有其独特的作用。

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For naturally fractured low permeable limestone reservoirs, the oil displacing function by spontaneous imbibition of water is weak when the matrix rock surfaces are mixed wet or oil wetted.

裂缝发育的低渗灰岩储层，当基质岩块为混湿及油湿时，毛细渗吸驱油作用很弱。

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