Wells Patents (Class 166)
- Testing (Class 166/336)
- Connection or disconnection of submerged members remotely controlled (Class 166/338)
- Submerged, buoyant wellhead or riser (Class 166/350)
- Means removably connected to permanent well structure (Class 166/351)
- With safety or emergency shutoff (Class 166/363)
- Including disaster feature (Class 166/364)
- With provision for disassembly (Class 166/365)
- Multiple wells (Class 166/366)
- Riser (Class 166/367)
- Wellhead (Class 166/368)
- Specific pattern of plural wells (Class 166/245)
- Using microorganisms (Class 166/246)
- Nuclear energy or radioactivity for treating (Class 166/247)
- Electric current or electrical wave energy through earth for treating (Class 166/248)
- Vibrating the earth or material in or being placed in the earth pores (Class 166/249)
- With indicating, testing, measuring or locating (Class 166/250.01)
- In situ combustion (Class 166/256)
- Sampling well fluid (Class 166/264)
- Separating material entering well (Class 166/265)
- Distinct, separate injection and producing wells (Class 166/268)
- Cyclic injection then production of a single well (Class 166/263)
- Providing porous mass of adhered filter material in well (Class 166/276)
- Repairing object in well (Class 166/277)
- Graveling or filter forming (Class 166/278)
- Material placed in pores of formation to treat resident fluid flowing into well (Class 166/279)
- Specific propping feature (EPO) (Class 166/280.1)
- Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking formation (Class 166/281)
- Specific low fluid loss feature for fluid attacking formation (Class 166/282)
- Specific low fluid loss feature for fracturing fluid or cement causes fracture (Class 166/283)
- Fluid flow causes pellet to block opening in wall of conduit (Class 166/284)
- Cementing, plugging or consolidating (Class 166/285)
- Preventing flow into strainer while lowering by blocking openings (Class 166/296)
- Perforating, weakening, bending or separating pipe at an unprepared point (Class 166/297)
- With explosion or breaking container to implode (Class 166/299)
- Chemical inter-reaction of two or more introduced materials (e.g., selective plugging or surfactant) (Class 166/300)
- Freeing stuck object, grappling or fishing in well (Class 166/301)
- Heating, cooling or insulating (Class 166/302)
- Dissolving or preventing formation of solid oil deposit (Class 166/304)
- Placing fluid into the formation (Class 166/305.1)
- Producing foam or gas in well by foaming or gas producing material (Class 166/309)
- Entraining or incorporating treating material in flowing earth fluid (Class 166/310)
- Cleaning or unloading well (Class 166/311)
- Parallel string or multiple completion well (Class 166/313)
- Producing the well (Class 166/369)
- Operating valve, closure, or changeable restrictor in a well (Class 166/373)
- Destroying or dissolving well part (Class 166/376)
- Disassembling well part (Class 166/377)
- Assembling well part (Class 166/378)
- Placing or shifting well part (Class 166/381)
- Eduction pump or plunger in well (Class 166/68)
- With receptacle for insertion into well (Class 166/69)
- Head for tool, piston or cleaner (e.g., cement head) (Class 166/70)
- With above ground casing sinking means (Class 166/71)
- Above ground actuating means for below ground device (Class 166/72)
- With below ground screen (Class 166/74)
- Having structure for converting from one mode of operation to another; e.g., valve to packer (Class 166/76.1)
- Moving tubing or cable into an existing well (Class 166/77.1)
- With means facilitating connecting or disconnecting supported tubing or rod sections (Class 166/77.51)
- With assembly or disassembly means (e.g., handling, guiding, or tool feature) (Class 166/85.1)
- Inner member anchor or seal with valve (Class 166/86.1)
- Inner member anchor or seal with lateral port (Class 166/88.1)
- With tube rotating means (rotary tables) (Class 166/78.1)
- Cap having transporting means or ground support (Class 166/79.1)
- Having retractable pipe section to allow closing of gate type valve or flapper valve for rod or pipe (Class 166/80.1)
- Fluid catcher around pipe coupling (Class 166/81.1)
- Releasable seal or cleaner disengaged by projection on inner member (Class 166/82.1)
- With seal for reciprocating member (Class 166/84.1)
- With means for inserting fluid into well (Class 166/90.1)
- With means for injecting solid or particulate material into the well (Class 166/75.15)
- With flow restrictions (e.g., chokes or beans) (Class 166/91.1)
- Cap or head pivotably attached to tube or casing (Class 166/92.1)
- Split cap or head (Class 166/93.1)
- Laterally adjustable cap or head (Class 166/94.1)
- Central valve or closure and lateral port (Class 166/95.1)
- External anchoring or bracing means (Class 166/96.1)
- With valve on cap or head (Class 166/97.1)
- Well caps or casing heads (Class 166/75.13)
- Suspension means (Class 166/75.14)
- Treatment of produced fluids (Class 166/75.12)
- Parallel pipes extending along distinct paths through wellhead (Class 166/97.5)
- With expanding anchor (Class 166/118)
- Sealing portion closes port between central pipe and outside space when unexpanded (Class 166/141)
- With controllable passage between central chamber and space below packer (Class 166/142)
- Adjustable over pipe or set over prepositioned pipe (Class 166/180)
- With detachable setting means (Class 166/181)
- With controllable bypass outside central conduit (Class 166/183)
- With controllable passage between central conduit and space above packer or plug (Class 166/184)
- With central conduit and fluid port to space outside (Class 166/185)
- Expanded by confined fluid from central chamber, pump or plunger (Class 166/187)
- Controllable passage through packer (Class 166/188)
- For non-concentric members (Class 166/189)
- Spaced sealing portions (Class 166/191)
- Flow stopping type; e.g., plug (Class 166/192)
- Deformable portion engages conduit restriction (Class 166/195)
- Central support has shoulders expanding sealing portion, or telescopes (Class 166/196)
- Cup type (Class 166/202)
- Non-deformable type (Class 166/203)
- With separate air chamber having openable passage (Class 166/163)
- With destroyable closure and valve (Class 166/164)
- With valved or closed top (Class 166/165)
- Valve control means contacting well conduit wall (Class 166/166)
- Bottom receiving and side discharge valves (Class 166/167)
- Readily releasable bottom valve (Class 166/168)
- Lateral ports used in well (Class 166/169)
- Expansible casing (Class 166/207)
- Liner hanger (Class 166/208)
- Set by wedge or cam at any point by drop only (e.g., tubing catcher) (Class 166/209)
- Fluid pressure actuated (Class 166/212)
- Bowed anchor means (Class 166/213)
- Spring set (Class 166/214)
- With wedge or cam and friction drag (Class 166/216)
- Expansible means translated by wedge or cam (Class 166/217)
- Flexible tube or cable (Class 166/242.2)
- Plural, parallel, nonconcentric conduits (Class 166/242.3)
- Corrosion prevention or deterring (Class 166/242.4)
- Side entry (Class 166/242.5)
- Downhole coupling or connector (Class 166/242.6)
- Shoe detail (Class 166/242.8)
- Brick or cement casing liner (Class 166/242.9)