ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
E21B0047053000 using radioactive markers 1
E21B0047060000 Measuring temperature or pressure 1
E21B0047070000 Temperature 1
E21B0047080000 Measuring diameters or related dimensions at the borehole 1
E21B0047085000 using radiant means, e.g. acoustic, radioactive or electromagnetic 1
E21B0047090000 Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes 1
E21B0047092000 by detecting magnetic anomalies 1
E21B0047095000 by detecting acoustic anomalies, e.g. using mud-pressure pulses 1
E21B0047098000 using impression packers, e.g. to detect recesses or perforations 1
E21B0047100000 Locating fluid leaks, intrusions or movements 1
E21B0047103000 using thermal measurements 1
E21B0047107000 using acoustic means 1
E21B0047110000 using tracers; using radioactivity 1
E21B0047113000 using electrical indications; using light radiation 1
E21B0047117000 Detecting leaks, e.g. from tubing, by pressure testing 1