Darcy's law indicates that formation pressure of an oil well has some correlativity with wellbore fluid producing volume and bottom hole flowing pressure.
达西定律表明，油井地层压力与井筒产液量和井底流压具有相关性。
2
The tool also can be used for evaluation of formationoil saturation and formation flooding degree perfectly in an old producing well.
在已投入生产的老油井中，能够较好地评价储层的剩余油饱和度及水淹程度；
3
Hot water, steam, or gas is injected into the producingformation to lower the viscosity of the oil and force it through the reservoir toward producing Wells.