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Classification Resources
 
Class   166WELLS
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[List of Pre Grant Publications for class 166 subclass 335][List of Patents for class 166 subclass 335]335 SUBMERGED WELL
[List of Pre Grant Publications for class 166 subclass 244.1][List of Patents for class 166 subclass 244.1]244.1 PROCESSES
 [List of Pre Grant Publications for class 166 subclass 245][List of Patents for class 166 subclass 245]245 Subclass 245 indent level is 1 Specific pattern of plural wells
 [List of Pre Grant Publications for class 166 subclass 246][List of Patents for class 166 subclass 246]246 Subclass 246 indent level is 1 Using microorganisms
 [List of Pre Grant Publications for class 166 subclass 247][List of Patents for class 166 subclass 247]247 Subclass 247 indent level is 1 Nuclear energy or radioactivity for treating
 [List of Pre Grant Publications for class 166 subclass 248][List of Patents for class 166 subclass 248]248 Subclass 248 indent level is 1 Electric current or electrical wave energy through earth for treating
 [List of Pre Grant Publications for class 166 subclass 249][List of Patents for class 166 subclass 249]249 Subclass 249 indent level is 1 Vibrating the earth or material in or being placed in the earth pores
[List of Pre Grant Publications for class 166 subclass 250.01][List of Patents for class 166 subclass 250.01]250.01 Subclass 250.01 indent level is 1 With indicating, testing, measuring or locating
[List of Pre Grant Publications for class 166 subclass 256][List of Patents for class 166 subclass 256]256 Subclass 256 indent level is 1 In situ combustion
 [List of Pre Grant Publications for class 166 subclass 264][List of Patents for class 166 subclass 264]264 Subclass 264 indent level is 1 Sampling well fluid
[List of Pre Grant Publications for class 166 subclass 265][List of Patents for class 166 subclass 265]265 Subclass 265 indent level is 1 Separating material entering well
[List of Pre Grant Publications for class 166 subclass 268][List of Patents for class 166 subclass 268]268 Subclass 268 indent level is 1 Distinct, separate injection and producing wells
 [List of Pre Grant Publications for class 166 subclass 263][List of Patents for class 166 subclass 263]263 Subclass 263 indent level is 1 Cyclic injection then production of a single well
 [List of Pre Grant Publications for class 166 subclass 276][List of Patents for class 166 subclass 276]276 Subclass 276 indent level is 1 Providing porous mass of adhered filter material in well
 [List of Pre Grant Publications for class 166 subclass 277][List of Patents for class 166 subclass 277]277 Subclass 277 indent level is 1 Repairing object in well
 [List of Pre Grant Publications for class 166 subclass 278][List of Patents for class 166 subclass 278]278 Subclass 278 indent level is 1 Graveling or filter forming
 [List of Pre Grant Publications for class 166 subclass 279][List of Patents for class 166 subclass 279]279 Subclass 279 indent level is 1 Material placed in pores of formation to treat resident fluid flowing into well
[List of Pre Grant Publications for class 166 subclass 280.1][List of Patents for class 166 subclass 280.1]280.1 Subclass 280.1 indent level is 1 Specific propping feature (EPO)
 [List of Pre Grant Publications for class 166 subclass 281][List of Patents for class 166 subclass 281]281 Subclass 281 indent level is 1 Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking formation
 [List of Pre Grant Publications for class 166 subclass 282][List of Patents for class 166 subclass 282]282 Subclass 282 indent level is 1 Specific low fluid loss feature for fluid attacking formation
 [List of Pre Grant Publications for class 166 subclass 283][List of Patents for class 166 subclass 283]283 Subclass 283 indent level is 1 Specific low fluid loss feature for fracturing fluid or cement causes fracture
 [List of Pre Grant Publications for class 166 subclass 284][List of Patents for class 166 subclass 284]284 Subclass 284 indent level is 1 Fluid flow causes pellet to block opening in wall of conduit
[List of Pre Grant Publications for class 166 subclass 285][List of Patents for class 166 subclass 285]285 Subclass 285 indent level is 1 Cementing, plugging or consolidating
 [List of Pre Grant Publications for class 166 subclass 296][List of Patents for class 166 subclass 296]296 Subclass 296 indent level is 1 Preventing flow into strainer while lowering by blocking openings
[List of Pre Grant Publications for class 166 subclass 297][List of Patents for class 166 subclass 297]297 Subclass 297 indent level is 1 Perforating, weakening, bending or separating pipe at an unprepared point
 [List of Pre Grant Publications for class 166 subclass 299][List of Patents for class 166 subclass 299]299 Subclass 299 indent level is 1 With explosion or breaking container to implode
 [List of Pre Grant Publications for class 166 subclass 300][List of Patents for class 166 subclass 300]300 Subclass 300 indent level is 1 Chemical inter-reaction of two or more introduced materials (e.g., selective plugging or surfactant)
 [List of Pre Grant Publications for class 166 subclass 301][List of Patents for class 166 subclass 301]301 Subclass 301 indent level is 1 Freeing stuck object, grappling or fishing in well
[List of Pre Grant Publications for class 166 subclass 302][List of Patents for class 166 subclass 302]302 Subclass 302 indent level is 1 Heating, cooling or insulating
 [List of Pre Grant Publications for class 166 subclass 304][List of Patents for class 166 subclass 304]304 Subclass 304 indent level is 1 Dissolving or preventing formation of solid oil deposit
[List of Pre Grant Publications for class 166 subclass 305.1][List of Patents for class 166 subclass 305.1]305.1 Subclass 305.1 indent level is 1 Placing fluid into the formation
 [List of Pre Grant Publications for class 166 subclass 309][List of Patents for class 166 subclass 309]309 Subclass 309 indent level is 1 Producing foam or gas in well by foaming or gas producing material
 [List of Pre Grant Publications for class 166 subclass 310][List of Patents for class 166 subclass 310]310 Subclass 310 indent level is 1 Entraining or incorporating treating material in flowing earth fluid
[List of Pre Grant Publications for class 166 subclass 311][List of Patents for class 166 subclass 311]311 Subclass 311 indent level is 1 Cleaning or unloading well
 [List of Pre Grant Publications for class 166 subclass 313][List of Patents for class 166 subclass 313]313 Subclass 313 indent level is 1 Parallel string or multiple completion well
[List of Pre Grant Publications for class 166 subclass 369][List of Patents for class 166 subclass 369]369 Subclass 369 indent level is 1 Producing the well
[List of Pre Grant Publications for class 166 subclass 373][List of Patents for class 166 subclass 373]373 Subclass 373 indent level is 1 Operating valve, closure, or changeable restrictor in a well
 [List of Pre Grant Publications for class 166 subclass 376][List of Patents for class 166 subclass 376]376 Subclass 376 indent level is 1 Destroying or dissolving well part
 [List of Pre Grant Publications for class 166 subclass 377][List of Patents for class 166 subclass 377]377 Subclass 377 indent level is 1 Disassembling well part
[List of Pre Grant Publications for class 166 subclass 378][List of Patents for class 166 subclass 378]378 Subclass 378 indent level is 1 Assembling well part
[List of Pre Grant Publications for class 166 subclass 381][List of Patents for class 166 subclass 381]381 Subclass 381 indent level is 1 Placing or shifting well part
 [List of Pre Grant Publications for class 166 subclass 50][List of Patents for class 166 subclass 50]50 WELLS WITH LATERAL CONDUITS
 [List of Pre Grant Publications for class 166 subclass 51][List of Patents for class 166 subclass 51]51 MEANS FOR FORMING FILTER BEDS (E.G., GRAVEL PLACING)
 [List of Pre Grant Publications for class 166 subclass 52][List of Patents for class 166 subclass 52]52 PLURAL WELLS
[List of Pre Grant Publications for class 166 subclass 53][List of Patents for class 166 subclass 53]53 AUTOMATIC
 [List of Pre Grant Publications for class 166 subclass 54.1][List of Patents for class 166 subclass 54.1]54.1 WITH MEANS FOR SEPARATELY PUMPING FROM PLURAL SOURCES IN WELL
[List of Pre Grant Publications for class 166 subclass 54.5][List of Patents for class 166 subclass 54.5]54.5 MEANS FOR CUTTING CABLE OR ROPE BELOW GROUND
[List of Pre Grant Publications for class 166 subclass 55][List of Patents for class 166 subclass 55]55 MEANS FOR PERFORATING, WEAKENING, BENDING OR SEPARATING PIPE AT AN UNPREPARED POINT
 [List of Pre Grant Publications for class 166 subclass 56][List of Patents for class 166 subclass 56]56 SCREEN AND OUTSIDE CLEANING PIPE
[List of Pre Grant Publications for class 166 subclass 57][List of Patents for class 166 subclass 57]57 WITH HEATING, REFRIGERATING OR HEAT INSULATING MEANS
 [List of Pre Grant Publications for class 166 subclass 63][List of Patents for class 166 subclass 63]63 WITH EXPLOSIVE OR GAS GENERATING MEANS IN WELL
 [List of Pre Grant Publications for class 166 subclass 64][List of Patents for class 166 subclass 64]64 WITH TIME OR DISTANCE MEASURING, TEMPERATURE RESPONSIVE OR COUNTING MEANS
[List of Pre Grant Publications for class 166 subclass 65.1][List of Patents for class 166 subclass 65.1]65.1 WITH ELECTRICAL MEANS
[List of Pre Grant Publications for class 166 subclass 67][List of Patents for class 166 subclass 67]67 WITH BELOW AND ABOVE GROUND MODIFICATION
[List of Pre Grant Publications for class 166 subclass 75.11][List of Patents for class 166 subclass 75.11]75.11 ABOVE GROUND APPARATUS
 [List of Pre Grant Publications for class 166 subclass 76.1][List of Patents for class 166 subclass 76.1]76.1 Subclass 76.1 indent level is 1 Having structure for converting from one mode of operation to another; e.g., valve to packer
[List of Pre Grant Publications for class 166 subclass 77.1][List of Patents for class 166 subclass 77.1]77.1 Subclass 77.1 indent level is 1 Moving tubing or cable into an existing well
[List of Pre Grant Publications for class 166 subclass 77.51][List of Patents for class 166 subclass 77.51]77.51 Subclass 77.51 indent level is 1 With means facilitating connecting or disconnecting supported tubing or rod sections
[List of Pre Grant Publications for class 166 subclass 85.1][List of Patents for class 166 subclass 85.1]85.1 Subclass 85.1 indent level is 1 With assembly or disassembly means (e.g., handling, guiding, or tool feature)
[List of Pre Grant Publications for class 166 subclass 86.1][List of Patents for class 166 subclass 86.1]86.1 Subclass 86.1 indent level is 1 Inner member anchor or seal with valve
[List of Pre Grant Publications for class 166 subclass 88.1][List of Patents for class 166 subclass 88.1]88.1 Subclass 88.1 indent level is 1 Inner member anchor or seal with lateral port
 [List of Pre Grant Publications for class 166 subclass 78.1][List of Patents for class 166 subclass 78.1]78.1 Subclass 78.1 indent level is 1 With tube rotating means (rotary tables)
 [List of Pre Grant Publications for class 166 subclass 79.1][List of Patents for class 166 subclass 79.1]79.1 Subclass 79.1 indent level is 1 Cap having transporting means or ground support
 [List of Pre Grant Publications for class 166 subclass 80.1][List of Patents for class 166 subclass 80.1]80.1 Subclass 80.1 indent level is 1 Having retractable pipe section to allow closing of gate type valve or flapper valve for rod or pipe
 [List of Pre Grant Publications for class 166 subclass 81.1][List of Patents for class 166 subclass 81.1]81.1 Subclass 81.1 indent level is 1 Fluid catcher around pipe coupling
[List of Pre Grant Publications for class 166 subclass 82.1][List of Patents for class 166 subclass 82.1]82.1 Subclass 82.1 indent level is 1 Releasable seal or cleaner disengaged by projection on inner member
[List of Pre Grant Publications for class 166 subclass 84.1][List of Patents for class 166 subclass 84.1]84.1 Subclass 84.1 indent level is 1 With seal for reciprocating member
 [List of Pre Grant Publications for class 166 subclass 90.1][List of Patents for class 166 subclass 90.1]90.1 Subclass 90.1 indent level is 1 With means for inserting fluid into well
 [List of Pre Grant Publications for class 166 subclass 75.15][List of Patents for class 166 subclass 75.15]75.15 Subclass 75.15 indent level is 1 With means for injecting solid or particulate material into the well
 [List of Pre Grant Publications for class 166 subclass 91.1][List of Patents for class 166 subclass 91.1]91.1 Subclass 91.1 indent level is 1 With flow restrictions (e.g., chokes or beans)
 [List of Pre Grant Publications for class 166 subclass 92.1][List of Patents for class 166 subclass 92.1]92.1 Subclass 92.1 indent level is 1 Cap or head pivotably attached to tube or casing
 [List of Pre Grant Publications for class 166 subclass 93.1][List of Patents for class 166 subclass 93.1]93.1 Subclass 93.1 indent level is 1 Split cap or head
 [List of Pre Grant Publications for class 166 subclass 94.1][List of Patents for class 166 subclass 94.1]94.1 Subclass 94.1 indent level is 1 Laterally adjustable cap or head
 [List of Pre Grant Publications for class 166 subclass 95.1][List of Patents for class 166 subclass 95.1]95.1 Subclass 95.1 indent level is 1 Central valve or closure and lateral port
 [List of Pre Grant Publications for class 166 subclass 96.1][List of Patents for class 166 subclass 96.1]96.1 Subclass 96.1 indent level is 1 External anchoring or bracing means
 [List of Pre Grant Publications for class 166 subclass 97.1][List of Patents for class 166 subclass 97.1]97.1 Subclass 97.1 indent level is 1 With valve on cap or head
 [List of Pre Grant Publications for class 166 subclass 75.13][List of Patents for class 166 subclass 75.13]75.13 Subclass 75.13 indent level is 1 Well caps or casing heads
 [List of Pre Grant Publications for class 166 subclass 75.14][List of Patents for class 166 subclass 75.14]75.14 Subclass 75.14 indent level is 1 Suspension means
 [List of Pre Grant Publications for class 166 subclass 75.12][List of Patents for class 166 subclass 75.12]75.12 Subclass 75.12 indent level is 1 Treatment of produced fluids
 [List of Pre Grant Publications for class 166 subclass 97.5][List of Patents for class 166 subclass 97.5]97.5 Subclass 97.5 indent level is 1 Parallel pipes extending along distinct paths through wellhead
 [List of Pre Grant Publications for class 166 subclass 98][List of Patents for class 166 subclass 98]98 GRAPPLE AND WELL ANCHORED LIFTING MEANS
 [List of Pre Grant Publications for class 166 subclass 99][List of Patents for class 166 subclass 99]99 WITH JUNK RETRIEVING MEANS
 [List of Pre Grant Publications for class 166 subclass 100][List of Patents for class 166 subclass 100]100 LATERAL PROBE OR PORT SEALED AGAINST WELL WALL
 [List of Pre Grant Publications for class 166 subclass 101][List of Patents for class 166 subclass 101]101 PACKER OR PLUG AND PUMP OR PLUNGER MEANS EXERTING OUTWARD PRESSURE
 [List of Pre Grant Publications for class 166 subclass 102][List of Patents for class 166 subclass 102]102 CONVERTIBLE
 [List of Pre Grant Publications for class 166 subclass 104][List of Patents for class 166 subclass 104]104 WITH MOTOR FOR ROTARY OR OSCILLATING MOTION
[List of Pre Grant Publications for class 166 subclass 105][List of Patents for class 166 subclass 105]105 WITH EDUCTION PUMP OR PLUNGER
 [List of Pre Grant Publications for class 166 subclass 113][List of Patents for class 166 subclass 113]113 COMBINED (E.G., WITH NON-ELECTRICAL INDICATING)
 [List of Pre Grant Publications for class 166 subclass 114][List of Patents for class 166 subclass 114]114 CENTRAL MEMBER WITH PRE-SET PACKER OR PLUG IN SAME CONDUIT
[List of Pre Grant Publications for class 166 subclass 115][List of Patents for class 166 subclass 115]115 CENTRAL CHAMBER SEALED WITH RESPECT TO PREPOSITIONED MODIFIED SURROUNDING CONDUIT
 [List of Pre Grant Publications for class 166 subclass 117][List of Patents for class 166 subclass 117]117 RECEPTACLE OR PART THEREOF LEFT IN WELL
[List of Pre Grant Publications for class 166 subclass 117.5][List of Patents for class 166 subclass 117.5]117.5 MEANS FOR GUIDING INSERTABLE ELEMENT LATERALLY OF WELL AXIS (E.G., WHIPSTOCK)
 [List of Pre Grant Publications for class 166 subclass 117.7][List of Patents for class 166 subclass 117.7]117.7 MEANS ANCHORED AGAINST ROTATION IN ONE CONDUIT SECTION FOR RELATIVELY ROTATING ANOTHER SECTION
[List of Pre Grant Publications for class 166 subclass 179][List of Patents for class 166 subclass 179]179 PACKERS OR PLUGS
[List of Pre Grant Publications for class 166 subclass 118][List of Patents for class 166 subclass 118]118 Subclass 118 indent level is 1 With expanding anchor
 [List of Pre Grant Publications for class 166 subclass 141][List of Patents for class 166 subclass 141]141 Subclass 141 indent level is 1 Sealing portion closes port between central pipe and outside space when unexpanded
[List of Pre Grant Publications for class 166 subclass 142][List of Patents for class 166 subclass 142]142 Subclass 142 indent level is 1 With controllable passage between central chamber and space below packer
 [List of Pre Grant Publications for class 166 subclass 180][List of Patents for class 166 subclass 180]180 Subclass 180 indent level is 1 Adjustable over pipe or set over prepositioned pipe
[List of Pre Grant Publications for class 166 subclass 181][List of Patents for class 166 subclass 181]181 Subclass 181 indent level is 1 With detachable setting means
 [List of Pre Grant Publications for class 166 subclass 183][List of Patents for class 166 subclass 183]183 Subclass 183 indent level is 1 With controllable bypass outside central conduit
 [List of Pre Grant Publications for class 166 subclass 184][List of Patents for class 166 subclass 184]184 Subclass 184 indent level is 1 With controllable passage between central conduit and space above packer or plug
[List of Pre Grant Publications for class 166 subclass 185][List of Patents for class 166 subclass 185]185 Subclass 185 indent level is 1 With central conduit and fluid port to space outside
 [List of Pre Grant Publications for class 166 subclass 187][List of Patents for class 166 subclass 187]187 Subclass 187 indent level is 1 Expanded by confined fluid from central chamber, pump or plunger
 [List of Pre Grant Publications for class 166 subclass 188][List of Patents for class 166 subclass 188]188 Subclass 188 indent level is 1 Controllable passage through packer
 [List of Pre Grant Publications for class 166 subclass 189][List of Patents for class 166 subclass 189]189 Subclass 189 indent level is 1 For non-concentric members
 [List of Pre Grant Publications for class 166 subclass 191][List of Patents for class 166 subclass 191]191 Subclass 191 indent level is 1 Spaced sealing portions
[List of Pre Grant Publications for class 166 subclass 192][List of Patents for class 166 subclass 192]192 Subclass 192 indent level is 1 Flow stopping type; e.g., plug
 [List of Pre Grant Publications for class 166 subclass 195][List of Patents for class 166 subclass 195]195 Subclass 195 indent level is 1 Deformable portion engages conduit restriction
 [List of Pre Grant Publications for class 166 subclass 196][List of Patents for class 166 subclass 196]196 Subclass 196 indent level is 1 Central support has shoulders expanding sealing portion, or telescopes
 [List of Pre Grant Publications for class 166 subclass 202][List of Patents for class 166 subclass 202]202 Subclass 202 indent level is 1 Cup type
 [List of Pre Grant Publications for class 166 subclass 203][List of Patents for class 166 subclass 203]203 Subclass 203 indent level is 1 Non-deformable type
[List of Pre Grant Publications for class 166 subclass 153][List of Patents for class 166 subclass 153]153 PISTONS, FLUID DRIVEN INTO WELL (E.G., CEMENTING PLUGS)
[List of Pre Grant Publications for class 166 subclass 157][List of Patents for class 166 subclass 157]157 SCREEN WITH WASHING POINT OR SHOE
[List of Pre Grant Publications for class 166 subclass 162][List of Patents for class 166 subclass 162]162 RECEPTACLES
[List of Pre Grant Publications for class 166 subclass 170][List of Patents for class 166 subclass 170]170 BRUSHING, SCRAPING, CUTTING OR PUNCHING-TYPE CLEANERS
[List of Pre Grant Publications for class 166 subclass 177.1][List of Patents for class 166 subclass 177.1]177.1 SONIC DEVICE
 [List of Pre Grant Publications for class 166 subclass 177.3][List of Patents for class 166 subclass 177.3]177.3 WIPER
 [List of Pre Grant Publications for class 166 subclass 177.4][List of Patents for class 166 subclass 177.4]177.4 CEMENTING DEVICE
 [List of Pre Grant Publications for class 166 subclass 177.5][List of Patents for class 166 subclass 177.5]177.5 HYDRAULIC FRACTURING DEVICE
 [List of Pre Grant Publications for class 166 subclass 177.6][List of Patents for class 166 subclass 177.6]177.6 VIBRATOR
 [List of Pre Grant Publications for class 166 subclass 177.7][List of Patents for class 166 subclass 177.7]177.7 AGITATOR
 [List of Pre Grant Publications for class 166 subclass 178][List of Patents for class 166 subclass 178]178 WITH JAR MEANS FOR RELEASING STUCK PART
 [List of Pre Grant Publications for class 166 subclass 205][List of Patents for class 166 subclass 205]205 SCREEN WITH VALVE, CLOSURE, CHANGEABLE RESTRICTOR OR PORTION REMOVABLE IN WELL
[List of Pre Grant Publications for class 166 subclass 206][List of Patents for class 166 subclass 206]206 EXPANSIBLE ANCHOR OR CASING
[List of Pre Grant Publications for class 166 subclass 222][List of Patents for class 166 subclass 222]222 WHIRLING OR LATERAL DISCHARGE OR PROJECTABLE NOZZLES
[List of Pre Grant Publications for class 166 subclass 316][List of Patents for class 166 subclass 316]316 VALVES, CLOSURES OR CHANGEABLE RESTRICTORS
[List of Pre Grant Publications for class 166 subclass 227][List of Patents for class 166 subclass 227]227 SCREENS
[List of Pre Grant Publications for class 166 subclass 237][List of Patents for class 166 subclass 237]237 DETENTS OR CLUTCHES
[List of Pre Grant Publications for class 166 subclass 241.1][List of Patents for class 166 subclass 241.1]241.1 GUIDE FOR DEVICE OR CONDUIT
[List of Pre Grant Publications for class 166 subclass 242.1][List of Patents for class 166 subclass 242.1]242.1 CONDUIT WALL OR SPECIFIC CONDUIT END STRUCTURE
 [List of Pre Grant Publications for class 166 subclass 243][List of Patents for class 166 subclass 243]243 MISCELLANEOUS (E.G., ANCHOR PIPES)
 
CROSS-REFERENCE ART COLLECTIONS
 
 [List of Pre Grant Publications for class 166 subclass 901][List of Patents for class 166 subclass 901]901 WELLS IN FROZEN TERRAIN
 [List of Pre Grant Publications for class 166 subclass 902][List of Patents for class 166 subclass 902]902 FOR INHIBITING CORROSION OR COATING
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
Any foreign patents or nonpatent literature from subclasses that have been reclassified have been transferred directly to the FOR Collection listed below. These collections contain ONLY foreign patents or nonpatent literature. The parenthetical references in the collection titles refer to the abolished subclasses from which these COLLECTIONS were derived.
     PROCESSES (166/244.1)