| 摘要 |
A simplified downhole pressure reading instrument. It has a cylindrical body which holds a charge of gas at one end. There is a concentric cylindrical element which slides longitudinally inside the body with a low friction seal between them. The body has an opening at the other end from the gas charge, to admit the downhole fluid pressure. And, there is an arrangement for taking a reading of the maximum compression of the gas charge by the longitudinal movement of the inner cylindrical element.
|
