RE: RE: RE: RE: TorcHello NLR. The oilfield has gone metric in Canada and it complicates things in my opinion. Canadians working overseas are now exposed to metric and all World Class rigs are using English or API terms. This puts them at an immediate disadvantage if they only know metric values and have no conversion data. I know bbls and not m3 so much.
Pressure recorders are rugged precision instruments and are regularily calibrated. Basically, the formation pressure acts against a piston by various designs and this movement mechanically or hydraulically moves a calibrated instrument to show the level of force against it and marks it on a chart, later to be read against a chart reader for pressure values while static in the well or with the well flowing. Of course, modern technology most likely will have electronics involved for more precise pressure measurements, for whatever that is worth. Formation pressure and drawdown flowing pressures are valuable for reservoir engineers to calculate reservoir volumes. (which directly affects the value of your stock position) They can be run in the hole on tubing, drill pipe, electronic wireline or slick line, a single filament (wire) of stainless steel usually or a ss alloy. I expect these recorders are in on slick line. The clocks on the recorders may operate for days or weeks in the well before they play out. Multiple recorders in a carrier will be run in the event that the one recorder run may fail and time will be wasted for recovery of well pressure information.