To strong stress sensitivity formation, low BHP reduces pore fluid pressure of near wellbore are which results in the closure of formation fracture.

对于应力敏感性强的储集层，过低的井底压力降低了近井地带地层的孔隙流体压力，导致裂缝趋于闭合。同时，井壁失稳的可能性也大。

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The unconsolidated sandstone reservoir has low consolidation strength. It shows strong stress sensitivity when the effective stress of reservoir changes.

疏松砂岩胶结强度弱，储层有效应力改变时具有很强的应力敏感性。

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It is verified from experimentation that as long as sensitivity to stress exists in the core, adverse effect would gradually appear when force imposed on the core becomes strong to some given extent.

实验结果表明，只要磁芯内部残存着应力敏感性，当磁芯受力大到一定程度后，其不良影响就会逐渐地表现出来。

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