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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
E21B0044000000 Automatic control; Surveying or testing 1
E21B0044000000 Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems (for non-automatic drilling control, see the operation controlled;automatic feeding from rack and connecting of drilling pipes E21B0019200000; controlling pressure or flow of drilling fluid E21B0021080000); Systems specially adapted for monitoring a plurality of drilling variables or conditions (means for transmitting measuring-signals from the well to the surface E21B0047120000) 1
E21B0044020000 Automatic control of the tool feed (E21B0044100000 takes precedence);; 1
E21B0044040000 in response to the torque of the drive 1
E21B0044060000 in response to the flow or pressure of the motive fluid of the drive 1
E21B0044080000 in response to the amplitude of the movement of the percussion tool, e.g. jump or recoil 1
E21B0044100000 Arrangements for automatic stopping when the tool is lifted from the working face 1
E21B0045000000 Surveying or testing 1
E21B0045000000 Measuring the drilling time or rate of penetration 1
E21B0047000000 Survey of boreholes or wells (monitoring pressure or flow of drilling fluid E21B0021080000) 1
E21B0047001000 for underwater installations 1
E21B0047002000 by visual inspection 1
E21B0047003000 Determining well or borehole volumes (determining depth E21B0047040000; diameter E21B0047080000) 1
E21B0047005000 Monitoring or checking of cementation quality or level 1
E21B0047007000 Measuring stresses in a pipe string or casing (for locating blocked portions of pipes E21B0047090000) 1
จำนวนรหัสข้อมูล 15 จาก 73902