1.The causes are presented as follows: packer unloading pressure, formation damage, oil tool plugging, formation voidage, the worst formation physical properties and the effect from vicinage wells.
3.The whole looked, as the host of the Rochester Arms had said, " quite a desolate spot." It was as still as a church on a week-day: the pattering rain on the forest leaves was the only sound audible in its vicinage.