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| You are viewing a USPC Schedule. |
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| Class 166 | WELLS |
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![[List of Pre Grant Publications for class 166 subclass 335]](../as.gif) | ![[List of Patents for class 166 subclass 335]](../ps.gif) | 335 | SUBMERGED WELL |
| | 336 |  Testing |
| | 338 | Connection or disconnection of submerged members remotely controlled |
| | 339 |  With provision for removal or repositioning of member without removal of other well structure |
| | 340 | Disconnection |
| | 341 | With orienting or aligning of member for connection |
| | 344 | Connection to provide fluid flow path |
| | 345 |  Connection of riser-and-tubing assembly to other structure |
| | 346 | Yieldable tubing |
| | 347 | Connection of lateral flow line |
| | 348 | Connection of pipe hanging |
| | 349 | Connection of guide means |
| | 350 | Submerged, buoyant wellhead or riser |
| | 351 | Means removably connected to permanent well structure |
| | 352 | Surface vessel |
| | 353 | Having means to move vessel to precise location |
| | 354 | Having means to hold vessel at given location (e.g., anchor, etc.) |
| | 355 | With means to compensate for vessel movement |
| | 356 | Means to provide protective environment for operative access below surface of water |
| | 357 | Separator |
| | 358 | Drilling means |
| | 359 | Removable riser |
| | 360 | Well component assembly means |
| | 361 | Pipe cutting means |
| | 363 | With safety or emergency shutoff |
| | 364 | Including disaster feature |
| | 365 | With provision for disassembly |
| | 366 | Multiple wells |
| | 367 | Riser |
| | 368 | Wellhead |
| | 244.1 | PROCESSES |
| | 245 | Specific pattern of plural wells |
| | 246 | Using microorganisms |
| | 247 | Nuclear energy or radioactivity for treating |
| | 248 | Electric current or electrical wave energy through earth for treating |
| | 249 | Vibrating the earth or material in or being placed in the earth pores |
| | 250.01 | With indicating, testing, measuring or locating |
| | 251.1 | Including in situ combustion |
| | 252.1 | Including production of earth fluid by driving fluid |
| | 252.2 | Residual oil or oil saturation |
| | 252.3 | Salinity or acidity |
| | 252.4 | Flood front |
| | 252.5 | Permeability or viscosity |
| | 252.6 | And tracing material |
| | 253.1 | Indicating the location, presence, or absence of cement |
| | 254.1 | Determining position of earth zone or marker |
| | 255.1 | Determining position of object in well |
| | 250.02 | Permeability determining |
| | 250.03 | Determining fluid interface or fluid level |
| | 250.04 | Plug indicating or releasing |
| | 250.05 | Scale or corrosion determination |
| | 250.06 | Steam quality |
| | 250.07 | Bottom hole pressure |
| | 250.08 | Leak testing or locating |
| | 250.09 | Impression means |
| | 250.1 | Fracturing characteristic |
| | 250.11 | Holder for coupon or sensor |
| | 250.12 | Tracer |
| | 250.13 | Determining stuck point |
| | 250.14 | Of cementing or plugging technique |
| | 250.15 | Automatic control for production |
| | 250.16 | Prospecting |
| | 250.17 | Including testing or treating tool having at least one actuatable packer |
| | 256 | In situ combustion |
| | 257 | Injecting while producing by in situ combustion from same well |
| | 258 | Plural distinct superimposed formations |
| | 259 | Including fracturing or attacking formation |
| | 260 | Injecting specific fuel or catalyst for burning into formation |
| | 261 | Injecting specific material other than oxygen into formation |
| | 262 | Solid fuel or particles in well |
| | 264 | Sampling well fluid |
| | 265 | Separating material entering well |
| | 268 | Distinct, separate injection and producing wells |
| | 270 | Injecting a composition to adjust the permeability (e.g., selective plugging) |
| | 270.1 | Injecting a composition including a surfactant or cosurfactant |
| | 400 | Sequentially injected separate fluids (e.g., slugs) |
| | 272.1 | Involving the step of heating |
| | 272.2 | In association with fracturing or crevice forming processes |
| | 272.3 | Steam as drive fluid |
| | 272.4 |  In combination with alkyls or carbon chains |
| | 272.5 | With override zone, diverting, or path blocking operation |
| | 272.6 | Liquid material injected |
| | 272.7 | Horizontal well |
| | 271 | Including fracturing or attacking formation |
| | 269 | Fluid injected from longitudinally spaced locations in injection well |
| | 275 | Injected fluid comprises water and material other than inorganic gas |
| | 263 | Cyclic injection then production of a single well |
| | 276 | Providing porous mass of adhered filter material in well |
| | 277 | Repairing object in well |
| | 278 | Graveling or filter forming |
| | 279 | Material placed in pores of formation to treat resident fluid flowing into well |
| | 280.1 | Specific propping feature (EPO) |
| | 281 | Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking formation |
| | 282 | Specific low fluid loss feature for fluid attacking formation |
| | 283 | Specific low fluid loss feature for fracturing fluid or cement causes fracture |
| | 284 | Fluid flow causes pellet to block opening in wall of conduit |
| | 285 | Cementing, plugging or consolidating |
| | 286 | Tamping, vibrating, exploding or using receptacle |
| | 287 | Removable molding or forming means |
| | 288 | Including heating |
| | 289 | Discharging cement from casing at different levels |
| | 290 | By tubing which is subsequently lifted |
| | 291 | With piston separator |
| | 292 | Using specific materials |
