ดาวน์โหลด

ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
E21B0047120000 Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling 1
E21B0047125000 using earth as an electrical conductor (E21B0047130000 takes precedence);; 1
E21B0047130000 by electromagnetic energy, e.g. of radio frequency range 1
E21B0047135000 using light waves, e.g. infrared or ultraviolet waves 1
E21B0047140000 using acoustic waves 1
E21B0047160000 through the drill string or casing 1
E21B0047180000 through the well fluid 1
E21B0047200000 by modulation of mud waves, e.g. by continuous modulation 1
E21B0047220000 by negative mud pulses using a pressure relief valve between drill pipe and annulus 1
E21B0047240000 by positive mud pulses using a flow restricting valve within the drill pipe 1
E21B0047260000 Storing data down-hole, e.g. in a memory or on a record carrier 1
E21B0049000000 Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells (sampling in general G01N0001000000) 1
E21B0049020000 by mechanically taking samples of the soil (apparatus for obtaining undisturbed cores E21B0025000000; investigation of foundation soil in situE02D0001000000) 1
E21B0049040000 using explosives in boreholes; using projectiles penetrating the wall 1
E21B0049060000 using side-wall drilling tools or scrapers 1
จำนวนรหัสข้อมูล 15 จาก 73902