Non-PRO English to Portuguese Science Geology Groundwater

With wells that have long screened sections or long open bedrock sections, it is sometimes desirable to isolate an interval of the screened or open section. One way to isolate an interval is to use packers, which are inflatable seals installed inside the well. A packer is like a long, skinny balloon that inflates inside the well and presses against the wall of the borehole or screen.