The field tests show that natural decline rate reduced 3.7%, daily oil production increased 14t/d, composite water cut decreased 3.1% for microbial oil displacement compared with before.

• 矿场试验表明 ；微生物驱油之后与之前相比 ；产量自然递减下降了 3 .；7%25 ; 日产油量上升了 14t/d ;