... Quartz Pressure Transducer Application:● Oil, gas and geothermal well testing, ● Downhole storage logging tool, wireline logging and formation tester ... Permanent downhole monitoring system, and permanent well head monitoring system,● Pressure testing while drilling.Instruction:Our ER-SU ... 25.4, Φ32multi-parameter production logging tool, well test storage pressure gauge, repeat formation tester, and ...