ดาวน์โหลด

ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
E21B0043118000 characterised by lowering in vertical position and subsequent tilting to operating position 1
E21B0043118500 Ignition systems 1
E21B0043119000 Details, e.g. for locating perforating place or direction 1
E21B0043120000 Methods or apparatus for controlling the flow of the obtained fluid to or in wells (E21B0043250000 takes precedence;valve arrangements E21B0034000000) 1
E21B0043140000 Obtaining from a multiple-zone well 1
E21B0043160000 Enhanced recovery methods for obtaining hydrocarbons (fracturing E21B0043260000; obtaining slurry E21B0043290000; reclamation of contaminated soil in situB09C) 1
E21B0043170000 Interconnecting two or more wells by fracturing or otherwise attacking the formation (E21B0043247000 takes precedence);; 1
E21B0043180000 Repressuring or vacuum methods 1
E21B0043200000 Displacing by water 1
E21B0043220000 Use of chemicals or bacterial activity (E21B0043270000 takes precedence;chemical or bacterial compositions therefor C09K0008580000; chemical features in extracting oils from oil sands or shales C10G) 1
E21B0043240000 using heat, e.g. steam injection (heating, cooling or insulating wells E21B0036000000) 1
E21B0043241000 combined with solution mining of non-hydrocarbon minerals, e.g. solvent pyrolysis of oil shale 1
E21B0043243000 Combustion ; in situ 1
E21B0043247000 in association with fracturing processes 1
E21B0043248000 using explosives 1
จำนวนรหัสข้อมูล 15 จาก 73902