罗801块微生物驱效果评价方法探讨

针对罗801块注水早期实施微生物驱，开展了微生物驱效果评价方法研究。采用油藏工程方法评价注水和微生物驱共同效果，用油藏数模方法单独评价水驱效果，进而用二者的差值评价微生物驱效果。从评价结果看，水驱和微生物驱分别提高采收率15．32％和6％，到2005年底，微生物驱增油3．4×10^4t。运用上述评价方法，间接评价微生物驱效果，避开了微生物与油藏流体作用的复杂机理和过程，评价方法在矿场实践具有一定的创新性和应用前景。

Evaluation Method of Microorganisms Oil Displacement Effect in Luo 801 Block

In the earlier period of flooding in Luo 801, the evaluation methods of microorganisms oil displacement effect were studied. This paper has evaluated the collective effect of affusion and microorganisms oil displacement by using reservoir engineering method and the flooding effect was evaluated individually by numerical simulation way, and then the effect of microorganisms oil displacement was evaluated by using the difference of flooding and microorganisms driving. From the result, we can see that affusion and microorganisms driving has improved recovery ratio 15.32 percent and 6 percent respectively, therefore, using microorganisms oil displacement had increased 3.4x104 t oil by the end of 2005. By using above approach, the effect of microorganisms driving can evaluate indirectly. In this way, the complicated mechanism and process of the interaction between microorganisms and petroleum deposit fluid are avoided. The approach has some innovation and application foreground in field practice.