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Class Information
Number: 166/332
Name: Wells >
Description:










Sub-classes under this class:

Class Number Class Name Patents
166/ Processes (166/244.1) 0
166/100 Lateral probe or port sealed against well wall 150
166/101 Packer or plug and pump or plunger means exerting outward pressure 23
166/102 Convertible 16
166/104 With motor for rotary or oscillating motion 46
166/105 With eduction pump or plunger 474
166/113 Combined (e.g., with non-electrical indicating) 127
166/114 Central member with pre-set packer or plug in same conduit 16
166/115 Central chamber sealed with respect to prepositioned modified surrounding conduit 94
166/117 Receptacle or part thereof left in well 31
166/117.5 Means for guiding insertable element laterally of well axis (e.g., whipstock) 311
166/117.7 Means anchored against rotation in one conduit section for relatively rotating another section 50
166/153 Pistons, fluid driven into well (e.g., cementing plugs) 142
166/157 Screen with washing point or shoe 21
166/162 Receptacles 75
166/170 Brushing, scraping, cutting or punching-type cleaners 70
166/177.1 Sonic device 65
166/177.3 Wiper 52
166/177.4 Cementing device 212
166/177.5 Hydraulic fracturing device 152
166/177.6 Vibrator 73
166/177.7 Agitator 32
166/178 With jar means for releasing stuck part 182
166/179 Packers or plugs 167
166/205 Screen with valve, closure, changeable restrictor or portion removable in well 123
166/206 Expansible anchor or casing 192
166/222 Whirling or lateral discharge or projectable nozzles 136
166/227 Screens 250
166/237 Detents or clutches 183
166/241.1 Guide for device or conduit 125
166/242.1 Conduit wall or specific conduit end structure 283
166/243 Miscellaneous (e.g., anchor pipes) 94
166/244.1 Processes 98
166/316 Valves, closures or changeable restrictors 126
166/335 Submerged well 84
166/50 Wells with lateral conduits 781
166/51 Means for forming filter beds (e.g., gravel placing) 435
166/52 Plural wells 167
166/53 Automatic 455
166/54.1 With means for separately pumping from plural sources in well 38
166/54.5 Means for cutting cable or rope below ground 36
166/55 Means for perforating, weakening, bending or separating pipe at an unprepared point 399
166/56 Screen and outside cleaning pipe 10
166/57 With heating, refrigerating or heat insulating means 337
166/63 With explosive or gas generating means in well 231
166/64 With time or distance measuring, temperature responsive or counting means 208
166/65.1 With electrical means 653
166/67 With below and above ground modification 61
166/75.11 Above ground apparatus 139
166/901 Wells in frozen terrain 41
166/902 For inhibiting corrosion or coating 257
166/98 Grapple and well anchored lifting means 111
166/99 With junk retrieving means 104


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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