US Patent Class 166
WELLS
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| DF | CLASS NOTES | |
| 335 | DF | SUBMERGED WELL |
| 336 | DF | .~ Testing |
| 337 | DF | .~.~ For leak |
| 338 | DF | .~ Connection or disconnection of submerged members remotely controlled |
| 339 | DF | .~.~ With provision for removal or repositioning of member without removal of other well structure |
| 340 | DF | .~.~ Disconnection |
| 341 | DF | .~.~ With orienting or aligning of member for connection |
| 342 | DF | .~.~.~ Including removable, member mounted guide |
| 343 | DF | .~.~.~ Including means to pull member into position |
| 344 | DF | .~.~ Connection to provide fluid flow path |
| 345 | DF | .~.~.~ Connection of riser-and-tubing assembly to other structure |
| 346 | DF | .~.~.~ Yieldable tubing |
| 347 | DF | .~.~.~ Connection of lateral flow line |
| 348 | DF | .~.~ Connection of pipe hanging |
| 349 | DF | .~.~ Connection of guide means |
| 350 | DF | .~ Submerged, buoyant wellhead or riser |
| 351 | DF | .~ Means removably connected to permanent well structure |
| 352 | DF | .~.~ Surface vessel |
| 353 | DF | .~.~.~ Having means to move vessel to precise location |
| 354 | DF | .~.~.~ Having means to hold vessel at given location (e.g., anchor, etc.) |
| 355 | DF | .~.~.~ With means to compensate for vessel movement |
| 356 | DF | .~.~ Means to provide protective environment for operative access below surface of water |
| 357 | DF | .~.~ Separator |
| 358 | DF | .~.~ Drilling means |
| 359 | DF | .~.~ Removable riser |
| 360 | DF | .~.~ Well component assembly means |
| 361 | DF | .~.~ Pipe cutting means |
| 363 | DF | .~ With safety or emergency shutoff |
| 364 | DF | .~ Including disaster feature |
| 365 | DF | .~ With provision for disassembly |
| 366 | DF | .~ Multiple wells |
| 367 | DF | .~ Riser |
| 368 | DF | .~ Wellhead |
| 244.1 | DF | PROCESSES |
| 245 | DF | .~ Specific pattern of plural wells |
| 246 | DF | .~ Using microorganisms |
| 247 | DF | .~ Nuclear energy or radioactivity for treating |
| 248 | DF | .~ Electric current or electrical wave energy through earth for treating |
| 249 | DF | .~ Vibrating the earth or material in or being placed in the earth pores |
| 250.01 | DF | .~ With indicating, testing, measuring or locating |
| 251.1 | DF | .~.~ Including in situ combustion |
| 252.1 | DF | .~.~ Including production of earth fluid by driving fluid |
| 252.2 | DF | .~.~.~ Residual oil or oil saturation |
| 252.3 | DF | .~.~.~ Salinity or acidity |
| 252.4 | DF | .~.~.~ Flood front |
| 252.5 | DF | .~.~.~ Permeability or viscosity |
| 252.6 | DF | .~.~.~ And tracing material |
| 253.1 | DF | .~.~ Indicating the location, presence, or absence of cement |
| 254.1 | DF | .~.~ Determining position of earth zone or marker |
| 254.2 | DF | .~.~.~ Well logging |
| 255.1 | DF | .~.~ Determining position of object in well |
| 255.2 | DF | .~.~.~ Tool orienting |
| 255.3 | DF | .~.~.~.~ Using whipstock |
| 250.02 | DF | .~.~ Permeability determining |
| 250.03 | DF | .~.~ Determining fluid interface or fluid level |
| 250.04 | DF | .~.~ Plug indicating or releasing |
| 250.05 | DF | .~.~ Scale or corrosion determination |
| 250.06 | DF | .~.~ Steam quality |
| 250.07 | DF | .~.~ Bottom hole pressure |
| 250.08 | DF | .~.~ Leak testing or locating |
| 250.09 | DF | .~.~ Impression means |
| 250.1 | DF | .~.~ Fracturing characteristic |
| 250.11 | DF | .~.~ Holder for coupon or sensor |
| 250.12 | DF | .~.~ Tracer |
| 250.13 | DF | .~.~ Determining stuck point |
| 250.14 | DF | .~.~ Of cementing or plugging technique |
| 250.15 | DF | .~.~ Automatic control for production |
| 250.16 | DF | .~.~ Prospecting |
| 250.17 | DF | .~.~ Including testing or treating tool having at least one actuatable packer |
| 256 | DF | .~ In situ combustion |
| 257 | DF | .~.~ Injecting while producing by in situ combustion from same well |
| 258 | DF | .~.~ Plural distinct superimposed formations |
| 259 | DF | .~.~ Including fracturing or attacking formation |
| 260 | DF | .~.~ Injecting specific fuel or catalyst for burning into formation |
| 261 | DF | .~.~ Injecting specific material other than oxygen into formation |
| 262 | DF | .~.~ Solid fuel or particles in well |
| 264 | DF | .~ Sampling well fluid |
| 265 | DF | .~ Separating material entering well |
| 266 | DF | .~.~ Injection and producing wells |
| 267 | DF | .~.~ Separating outside of well |
| 268 | DF | .~ Distinct, separate injection and producing wells |
| 270 | DF | .~.~ Injecting a composition to adjust the permeability (e.g., selective plugging) |
| 270.1 | DF | .~.~ Injecting a composition including a surfactant or cosurfactant |
| 270.2 | DF | .~.~.~ Nonaqueous type |
| 400 | DF | .~.~ Sequentially injected separate fluids (e.g., slugs) |
| 401 | DF | .~.~.~ Injecting a gas or gas mixture |
| 402 | DF | .~.~.~.~ CO2 or carbonated gas |
| 403 | DF | .~.~.~.~.~ In combination with additional organic material (e.g., alkyls, carbon chains) |
| 272.1 | DF | .~.~ Involving the step of heating |
| 272.2 | DF | .~.~.~ In association with fracturing or crevice forming processes |
| 272.3 | DF | .~.~.~ Steam as drive fluid |
| 272.4 | DF | .~.~.~.~ In combination with alkyls or carbon chains |
| 272.5 | DF | .~.~.~.~ With override zone, diverting, or path blocking operation |
| 272.6 | DF | .~.~.~ Liquid material injected |
| 272.7 | DF | .~.~.~ Horizontal well |
| 271 | DF | .~.~ Including fracturing or attacking formation |
| 269 | DF | .~.~ Fluid injected from longitudinally spaced locations in injection well |
| 275 | DF | .~.~ Injected fluid comprises water and material other than inorganic gas |
| 263 | DF | .~ Cyclic injection then production of a single well |
| 276 | DF | .~ Providing porous mass of adhered filter material in well |
| 277 | DF | .~ Repairing object in well |
| 278 | DF | .~ Graveling or filter forming |
| 279 | DF | .~ Material placed in pores of formation to treat resident fluid flowing into well |
| 280 | DF | .~ Specific propping feature for a fracture |
| 281 | DF | .~ Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking formation |
| 282 | DF | .~ Specific low fluid loss feature for fluid attacking formation |
| 283 | DF | .~ Specific low fluid loss feature for fracturing fluid or cement causes fracture |
| 284 | DF | .~ Fluid flow causes pellet to block opening in wall of conduit |
| 285 | DF | .~ Cementing, plugging or consolidating |
| 286 | DF | .~.~ Tamping, vibrating, exploding or using receptacle |
| 287 | DF | .~.~ Removable molding or forming means |
| 288 | DF | .~.~ Including heating |
| 289 | DF | .~.~ Discharging cement from casing at different levels |
| 290 | DF | .~.~ By tubing which is subsequently lifted |
| 291 | DF | .~.~ With piston separator |
| 292 | DF | .~.~ Using specific materials |
| 293 | DF | .~.~.~ Cement or consolidating material contains inorganic water settable and organic ingredients |
| 294 | DF | .~.~.~ Cement or consolidating material is organic or has organic ingredient |
| 295 | DF | .~.~.~.~ Organic material is resin or resinous |
| 296 | DF | .~ Preventing flow into strainer while lowering by blocking openings |
| 297 | DF | .~ Perforating, weakening, bending or separating pipe at an unprepared point |
| 298 | DF | .~.~ Perforating, weakening or separating by mechanical means or abrasive fluid |
| 299 | DF | .~ With explosion or breaking container to implode |
| 300 | DF | .~ Chemical inter-reaction of two or more introduced materials (e.g., selective plugging or surfactant) |
| 301 | DF | .~ Freeing stuck object, grappling or fishing in well |
| 302 | DF | .~ Heating, cooling or insulating |
| 303 | DF | .~.~ Placing preheated fluid into formation |
| 304 | DF | .~ Dissolving or preventing formation of solid oil deposit |
| 305.1 | DF | .~ Placing fluid into the formation |
| 306 | DF | .~.~ Fluid enters and leaves well at spaced zones |
| 307 | DF | .~.~ Attacking formation |
| 308 | DF | .~.~ Fracturing |
| 309 | DF | .~ Producing foam or gas in well by foaming or gas producing material |
| 310 | DF | .~ Entraining or incorporating treating material in flowing earth fluid |
| 311 | DF | .~ Cleaning or unloading well |
| 312 | DF | .~.~ Liquid introduced from well top |
| 313 | DF | .~ Parallel string or multiple completion well |
| 369 | DF | .~ Producing the well |
| 370 | DF | .~.~ Including varying downhole pressure |
| 371 | DF | .~.~ Including non-expulsive material placed in well |
| 372 | DF | .~.~ By fluid lift |
| 373 | DF | .~ Operating valve, closure, or changeable restrictor in a well |
| 374 | DF | .~.~ Operated by fluid pressure controlled above ground |
| 375 | DF | .~.~.~ By auxilliary fluid control line |
| 376 | DF | .~ Destroying or dissolving well part |
| 377 | DF | .~ Disassembling well part |
| 378 | DF | .~ Assembling well part |
| 379 | DF | .~.~ Above ground parts |
| 380 | DF | .~.~ Conduit |
| 381 | DF | .~ Placing or shifting well part |
| 382 | DF | .~.~ Providing support for well part (e.g., hanger or anchor) |
| 383 | DF | .~.~ By fluid driven piston |
| 384 | DF | .~.~ With bending of tubing |
| 385 | DF | .~.~ Flexible cable or wire |
| 386 | DF | .~.~ Fluid flow control member (e.g., plug or valve) |
| 387 | DF | .~.~ With sealing feature (e.g., packer) |
| 50 | DF | WELLS WITH LATERAL CONDUITS |
| 51 | DF | MEANS FOR FORMING FILTER BEDS (E.G., GRAVEL PLACING) |
| 52 | DF | PLURAL WELLS |
| 53 | DF | AUTOMATIC |
| 54 | DF | .~ Float controlled valve |
| 54.1 | DF | WITH MEANS FOR SEPARATELY PUMPING FROM PLURAL SOURCES IN WELL |
| 54.5 | DF | MEANS FOR CUTTING CABLE OR ROPE BELOW GROUND |
| 54.6 | DF | .~ Cutting means actuated by contacting element suspended in well by cable or rope |
| 55 | DF | MEANS FOR PERFORATING, WEAKENING, BENDING OR SEPARATING PIPE AT AN UNPREPARED POINT |
| 55.1 | DF | .~ With disparate below ground feature |
| 55.2 | DF | .~ Perforating or splitting cutter |
| 55.3 | DF | .~.~ Wedge or cam actuated |
| 55.6 | DF | .~ Cutter rotates circumferentially of pipe |
| 55.7 | DF | .~.~ Internal |
| 55.8 | DF | .~.~.~ Tool moved radially by fluid pressure |
| 56 | DF | SCREEN AND OUTSIDE CLEANING PIPE |
| 57 | DF | WITH HEATING, REFRIGERATING OR HEAT INSULATING MEANS |
| 58 | DF | .~ Fuel supply or hot billet in well |
| 59 | DF | .~ Burner in well |
| 60 | DF | .~ Electrical heater in well |
| 61 | DF | .~ Heater surrounding production tube |
| 62 | DF | .~ With eduction pump or plunger in well |
| 63 | DF | WITH EXPLOSIVE OR GAS GENERATING MEANS IN WELL |
| 64 | DF | WITH TIME OR DISTANCE MEASURING, TEMPERATURE RESPONSIVE OR COUNTING MEANS |
| 65.1 | DF | WITH ELECTRICAL MEANS |
| 66 | DF | .~ Indicating |
| 66.4 | DF | .~ Electrical motor (e.g., solenoid actuator) |
| 66.5 | DF | .~ Magnetic |
| 66.6 | DF | .~ Valve |
| 66.7 | DF | .~.~ Longitudinally movable operator |
| 67 | DF | WITH BELOW AND ABOVE GROUND MODIFICATION |
| 68 | DF | .~ Eduction pump or plunger in well |
| 68.5 | DF | .~.~ With above ground (1) motor carried by casing or casing support or (2) well fluid pump |
| 69 | DF | .~ With receptacle for insertion into well |
| 70 | DF | .~ Head for tool, piston or cleaner (e.g., cement head) |
| 71 | DF | .~ With above ground casing sinking means |
| 72 | DF | .~ Above ground actuating means for below ground device |
| 73 | DF | .~.~ Tubing or casing actuated |
| 74 | DF | .~ With below ground screen |
| 75.11 | DF | ABOVE GROUND APPARATUS |
| 76.1 | DF | .~ Having structure for converting from one mode of operation to another; e.g., valve to packer |
| 77.1 | DF | .~ Moving tubing or cable into an existing well |
| 77.2 | DF | .~.~ Coiled tubing |
| 77.3 | DF | .~.~.~ Chain injector |
| 77.4 | DF | .~.~ Piston and cylinder |
| 77.51 | DF | .~ With means facilitating connecting or disconnecting supported tubing or rod sections |
| 77.52 | DF | .~.~ With elevator detail |
| 77.53 | DF | .~.~ Upper and lower slips |
| 85.1 | DF | .~ With assembly or disassembly means (e.g., handling, guiding, or tool feature) |
| 85.2 | DF | .~.~ Pitless well adapters |
| 85.3 | DF | .~.~ Seal or bushing insertion or removal |
| 85.4 | DF | .~.~ With blowout preventer |
| 85.5 | DF | .~.~ Guiding or aligning feature |
| 86.1 | DF | .~ Inner member anchor or seal with valve |
| 86.2 | DF | .~.~ Annular sealing type valve |
| 86.3 | DF | .~.~ Gate type (perpendicular to pipe) valve |
| 87.1 | DF | .~.~ Axially movable type valve |
| 88.1 | DF | .~ Inner member anchor or seal with lateral port |
| 89.1 | DF | .~.~ Plural inner pipes |
| 89.2 | DF | .~.~.~ Parallel pipes (as opposed to concentric) |
| 89.3 | DF | .~.~.~ Having slip type hanger |
| 88.2 | DF | .~.~ Slip type well anchor |
| 88.3 | DF | .~.~.~ Seal actuated with anchor |
| 88.4 | DF | .~.~ With hydraulic conduit or line extending through outer member |
| 78.1 | DF | .~ With tube rotating means (rotary tables) |
| 79.1 | DF | .~ Cap having transporting means or ground support |
| 80.1 | DF | .~ Having retractable pipe section to allow closing of gate type valve or flapper valve for rod or pipe |
| 81.1 | DF | .~ Fluid catcher around pipe coupling |
| 82.1 | DF | .~ Releasable seal or cleaner disengaged by projection on inner member |
| 83.1 | DF | .~.~ Latches releasable radially inward |
| 84.1 | DF | .~ With seal for reciprocating member |
| 84.2 | DF | .~.~ Cooling fluid or grease supplied to seals |
| 84.3 | DF | .~.~ Rotary blowout preventer type |
| 84.4 | DF | .~.~ Fluid pressure actuated seals |
| 84.5 | DF | .~.~ Seal fixedly mounted to rod |
| 90.1 | DF | .~ With means for inserting fluid into well |
| 75.15 | DF | .~ With means for injecting solid or particulate material into the well |
| 91.1 | DF | .~ With flow restrictions (e.g., chokes or beans) |
| 92.1 | DF | .~ Cap or head pivotably attached to tube or casing |
| 93.1 | DF | .~ Split cap or head |
| 94.1 | DF | .~ Laterally adjustable cap or head |
| 95.1 | DF | .~ Central valve or closure and lateral port |
| 96.1 | DF | .~ External anchoring or bracing means |
| 97.1 | DF | .~ With valve on cap or head |
| 75.13 | DF | .~ Well caps or casing heads |
| 75.14 | DF | .~ Suspension means |
| 75.12 | DF | .~ Treatment of produced fluids |
| 97.5 | DF | .~ Parallel pipes extending along distinct paths through wellhead |
| 98 | DF | GRAPPLE AND WELL ANCHORED LIFTING MEANS |
| 99 | DF | WITH JUNK RETRIEVING MEANS |
| 100 | DF | LATERAL PROBE OR PORT SEALED AGAINST WELL WALL |
| 101 | DF | PACKER OR PLUG AND PUMP OR PLUNGER MEANS EXERTING OUTWARD PRESSURE |
| 102 | DF | CONVERTIBLE |
| 104 | DF | WITH MOTOR FOR ROTARY OR OSCILLATING MOTION |
| 105 | DF | WITH EDUCTION PUMP OR PLUNGER |
| 105.1 | DF | .~ Having sediment trap or deflector |
| 105.2 | DF | .~.~ Carried by reciprocating plunger or plunger rod |
| 105.3 | DF | .~.~ Sediment trap formed in pumping chamber |
| 105.4 | DF | .~.~ In pump discharge flow path |
| 105.5 | DF | .~ Having liquid-gas separator |
| 105.6 | DF | .~.~ Gas fed to entrainment type pump |
| 106 | DF | .~ With packer or plug |
| 107 | DF | .~ Receptacles |
| 108 | DF | .~.~ Piston actuates foot valve |
| 109 | DF | .~.~ Telescoping |
| 110 | DF | .~.~ Lateral port always below piston and used in well |
| 111 | DF | .~.~ Bail engaging piston rod |
| 112 | DF | .~ With leak means |
| 113 | DF | COMBINED (E.G., WITH NON-ELECTRICAL INDICATING) |
| 114 | DF | CENTRAL MEMBER WITH PRE-SET PACKER OR PLUG IN SAME CONDUIT |
| 115 | DF | CENTRAL CHAMBER SEALED WITH RESPECT TO PREPOSITIONED MODIFIED SURROUNDING CONDUIT |
| 116 | DF | .~ Surrounding conduit carries packer or plug |
| 117 | DF | RECEPTACLE OR PART THEREOF LEFT IN WELL |
| 117.5 | DF | MEANS FOR GUIDING INSERTABLE ELEMENT LATERALLY OF WELL AXIS (E.G., WHIPSTOCK) |
| 117.6 | DF | .~ Secured in operative position by movable means engaging well conduit (e.g., anchor) |
| 117.7 | DF | MEANS ANCHORED AGAINST ROTATION IN ONE CONDUIT SECTION FOR RELATIVELY ROTATING ANOTHER SECTION |
| 179 | DF | PACKERS OR PLUGS |
| 118 | DF | .~ With expanding anchor |
| 119 | DF | .~.~ Relatively movable packers or plugs |
| 120 | DF | .~.~ Anchor actuated by fluid pressure |
| 121 | DF | .~.~.~ Pressure transmitted by cup type packer or plug seal |
| 122 | DF | .~.~.~ Pressure transmitted by packer or plug expanded by confined fluid from central chamber, pump, or plunger |
| 123 | DF | .~.~ With detachable setting means |
| 124 | DF | .~.~.~ Screw threaded |
| 125 | DF | .~.~.~ Radially movable latch |
| 126 | DF | .~.~ With controllable passage between central chamber and space below packer |
| 127 | DF | .~.~.~ Spaced packer or plug seals |
| 128 | DF | .~.~.~ Passage controllable by movement of central chamber |
| 129 | DF | .~.~ With controllable bypass outside central conduit |
| 130 | DF | .~.~.~ Packer expanded by upper valve |
| 131 | DF | .~.~ With controllable passage between central conduit and space above packer or plug |
| 132 | DF | .~.~ Portion extends beyond end of surrounding conduit |
| 133 | DF | .~.~ With controllable passage through packer |
| 134 | DF | .~.~ Support and holddown expanding anchors |
| 135 | DF | .~.~ Flow stopping type, e.g., plug |
| 136 | DF | .~.~ Spring set anchor |
| 137 | DF | .~.~.~ Spring moves anchor slip relative to wedge or cam |
| 138 | DF | .~.~ Wedge or cam and friction drag |
| 139 | DF | .~.~.~ Threaded element rotated |
| 140 | DF | .~.~.~ Anchor above packer or plug seal |
| 141 | DF | .~ Sealing portion closes port between central pipe and outside space when unexpanded |
| 142 | DF | .~ With controllable passage between central chamber and space below packer |
| 143 | DF | .~.~ Central conduit detachable |
| 144 | DF | .~.~.~ Bottom supported casing or screen section |
| 145 | DF | .~.~ Bypass closing and passage opening to upward flow constrained to occur simultaneously |
| 146 | DF | .~.~ Passage connects with space below packers and continuously open passageway connects with space between packers |
| 147 | DF | .~.~ Passage connects with space between packer or plug seals |
| 148 | DF | .~.~ Upwardly biased check valve and means for opening or bypassing it |
| 149 | DF | .~.~ With passageway between central chamber and space above packer |
| 150 | DF | .~.~.~ Passageway controllable by movement of central chamber |
| 151 | DF | .~.~.~ Passageway valve directly responsive to fluid pressure |
| 152 | DF | .~.~ Passage controllable by movement of central chamber |
| 180 | DF | .~ Adjustable over pipe or set over prepositioned pipe |
| 181 | DF | .~ With detachable setting means |
| 182 | DF | .~.~ Packer or plug locked expanded |
| 183 | DF | .~ With controllable bypass outside central conduit |
| 184 | DF | .~ With controllable passage between central conduit and space above packer or plug |
| 185 | DF | .~ With central conduit and fluid port to space outside |
| 186 | DF | .~.~ Port between sealing portions and bypass around |
| 187 | DF | .~ Expanded by confined fluid from central chamber, pump or plunger |
| 188 | DF | .~ Controllable passage through packer |
| 189 | DF | .~ For non-concentric members |
| 191 | DF | .~ Spaced sealing portions |
| 192 | DF | .~ Flow stopping type; e.g., plug |
| 193 | DF | .~.~ Free falling type (e.g., dropped ball) |
| 194 | DF | .~.~.~ With sleeve valve |
| 195 | DF | .~ Deformable portion engages conduit restriction |
| 196 | DF | .~ Central support has shoulders expanding sealing portion, or telescopes |
| 202 | DF | .~ Cup type |
| 203 | DF | .~ Non-deformable type |
| 153 | DF | PISTONS, FLUID DRIVEN INTO WELL (E.G., CEMENTING PLUGS) |
| 154 | DF | .~ Surrounding conduit valve or closure opened by piston |
| 155 | DF | .~ With downflow past piston |
| 156 | DF | .~ With stop |
| 157 | DF | SCREEN WITH WASHING POINT OR SHOE |
| 158 | DF | .~ Detachable wash pipe |
| 162 | DF | RECEPTACLES |
| 163 | DF | .~ With separate air chamber having openable passage |
| 164 | DF | .~ With destroyable closure and valve |
| 165 | DF | .~ With valved or closed top |
| 166 | DF | .~ Valve control means contacting well conduit wall |
| 167 | DF | .~ Bottom receiving and side discharge valves |
| 168 | DF | .~ Readily releasable bottom valve |
| 169 | DF | .~ Lateral ports used in well |
| 170 | DF | BRUSHING, SCRAPING, CUTTING OR PUNCHING-TYPE CLEANERS |
| 171 | DF | .~ Perforation cleaners |
| 172 | DF | .~ Bow spring type |
| 173 | DF | .~ On tubing or casing |
| 174 | DF | .~ Retractable on support while lowering |
| 175 | DF | .~ Reciprocable relative to central member extending from well top |
| 176 | DF | .~ On sucker rod |
| 177.1 | DF | SONIC DEVICE |
| 177.2 | DF | .~ With specific downhole feature |
| 177.3 | DF | WIPER |
| 177.4 | DF | CEMENTING DEVICE |
| 177.5 | DF | HYDRAULIC FRACTURING DEVICE |
| 177.6 | DF | VIBRATOR |
| 177.7 | DF | AGITATOR |
| 178 | DF | WITH JAR MEANS FOR RELEASING STUCK PART |
| 205 | DF | SCREEN WITH VALVE, CLOSURE, CHANGEABLE RESTRICTOR OR PORTION REMOVABLE IN WELL |
| 206 | DF | EXPANSIBLE ANCHOR OR CASING |
| 207 | DF | .~ Expansible casing |
| 208 | DF | .~ Liner hanger |
| 209 | DF | .~ Set by wedge or cam at any point by drop only (e.g., tubing catcher) |
| 210 | DF | .~.~ With friction drag for setting by turning movement also |
| 211 | DF | .~.~ With spring |
| 212 | DF | .~ Fluid pressure actuated |
| 213 | DF | .~ Bowed anchor means |
| 214 | DF | .~ Spring set |
| 215 | DF | .~.~ Spring moves anchor slip relative to wedge or cam |
| 216 | DF | .~ With wedge or cam and friction drag |
| 217 | DF | .~ Expansible means translated by wedge or cam |
| 222 | DF | WHIRLING OR LATERAL DISCHARGE OR PROJECTABLE NOZZLES |
| 223 | DF | .~ Rotary or projectable |
| 316 | DF | VALVES, CLOSURES OR CHANGEABLE RESTRICTORS |
| 317 | DF | .~ Destructible element |
| 318 | DF | .~ Operated by dropped element |
| 319 | DF | .~ Fluid operated |
| 320 | DF | .~.~ Variably opened |
| 321 | DF | .~.~ Fluid pressure biased to open position position |
| 322 | DF | .~.~.~ Retrievable |
| 323 | DF | .~.~.~ Locked open or closed |
| 324 | DF | .~.~.~ With fluid pressure equalizing means |
| 325 | DF | .~.~ One way, e.g., check valve type |
| 326 | DF | .~.~.~ Flexible valve element |
| 327 | DF | .~.~.~ Shoes with check valve |
| 328 | DF | .~.~.~.~ Loose ball closure |
| 329 | DF | .~.~ Loose ball closure with limited reverse flow |
| 330 | DF | .~ Rotated operator |
| 331 | DF | .~.~ Lug in branched slot, e.g., "J" slot |
| 332.1 | DF | .~ Longitudinally movable operator |
| 332.2 | DF | .~.~ Having rotational movement |
| 332.3 | DF | .~.~.~ Ball valve type |
| 332.4 | DF | .~.~ Operated by means inserted from the surface |
| 332.5 | DF | .~.~ Valving means inserted or retrieved to operate |
| 332.6 | DF | .~.~ Having a dump or discharge type means |
| 332.7 | DF | .~.~ Having equalizing valve |
| 332.8 | DF | .~.~ Flapper type |
| 333.1 | DF | .~.~ Contact with bore bottom |
| 334.1 | DF | .~.~ Vertical movement of conduit |
| 334.2 | DF | .~.~.~ And rotational movement; e.g., ball valve-type |
| 334.3 | DF | .~.~.~ Drain-type |
| 334.4 | DF | .~.~.~ Fluid flow through lateral port to exterior |
| 227 | DF | SCREENS |
| 228 | DF | .~ Porous material |
| 229 | DF | .~ Inserted screen plug |
| 230 | DF | .~ Woven mesh |
| 231 | DF | .~ Spiral |
| 232 | DF | .~.~ With spacing lug for adjacent turns |
| 233 | DF | .~.~ With perforated pipe |
| 234 | DF | .~ Strip or rod |
| 235 | DF | .~ Stacked annular sections |
| 236 | DF | .~ Concentric pipes |
| 237 | DF | DETENTS OR CLUTCHES |
| 238 | DF | .~ Flow permitting means bridging fluid conduit |
| 239 | DF | .~ Operated by dropped weight |
| 240 | DF | .~ Lug in closed branched slot |
| 241.1 | DF | GUIDE FOR DEVICE OR CONDUIT |
| 241.2 | DF | .~ On sucker or pump rod |
| 241.3 | DF | .~.~ Rotatable or having a rotatable element |
| 241.4 | DF | .~.~ Surrounding existing rod |
| 241.5 | DF | .~ For a wireline operation |
| 241.6 | DF | .~ Surrounding existing device or tubing |
| 241.7 | DF | .~.~ Removably secured by a fastener (e.g., pin) parallel to tubing |
| 242.1 | DF | CONDUIT WALL OR SPECIFIC CONDUIT END STRUCTURE |
| 242.2 | DF | .~ Flexible tube or cable |
| 242.3 | DF | .~ Plural, parallel, nonconcentric conduits |
| 242.4 | DF | .~ Corrosion prevention or deterring |
| 242.5 | DF | .~ Side entry |
| 242.6 | DF | .~ Downhole coupling or connector |
| 242.7 | DF | .~.~ Telescopic |
| 242.8 | DF | .~ Shoe detail |
| 242.9 | DF | .~ Brick or cement casing liner |
| 243 | DF | MISCELLANEOUS (E.G., ANCHOR PIPES) |
| ****************************** | ||
| CROSS-REFERENCE ART COLLECTIONS | ||
| ****************************** | ||
| 901 | DF | WELLS IN FROZEN TERRAIN |
| 902 | DF | FOR INHIBITING CORROSION OR COATING |