| Class Number |
Class Name |
No. of Patents |
| 166/75.11 |
Above ground apparatus |
71 |
| 166/79.1 |
Cap having transporting means or ground support |
27 |
| 166/92.1 |
Cap or head pivotably attached to tube or casing |
26 |
| 166/95.1 |
Central valve or closure and lateral port |
77 |
| 166/96.1 |
External anchoring or bracing means |
32 |
| 166/81.1 |
Fluid catcher around pipe coupling |
53 |
| 166/80.1 |
Having retractable pipe section to allow closing of gate type valve or flapper valve for rod or pipe |
19 |
| 166/76.1 |
Having structure for converting from one mode of operation to another; e.g., valve to packer |
13 |
| 166/88.1 |
Inner member anchor or seal with lateral port |
67 |
| 166/89.1 |
Plural inner pipes |
39 |
| 166/89.3 |
Having slip type hanger |
11 |
| 166/89.2 |
Parallel pipes (as opposed to concentric) |
16 |
| 166/88.2 |
Slip type well anchor |
28 |
| 166/88.3 |
Seal actuated with anchor |
18 |
| 166/88.4 |
With hydraulic conduit or line extending through outer member |
78 |
| 166/86.1 |
Inner member anchor or seal with valve |
37 |
| 166/86.2 |
Annular sealing type valve |
22 |
| 166/87.1 |
Axially movable type valve |
24 |
| 166/86.3 |
Gate type (perpendicular to pipe) valve |
21 |
| 166/94.1 |
Laterally adjustable cap or head |
8 |
| 166/77.1 |
Moving tubing or cable into an existing well |
134 |
| 166/77.2 |
Coiled tubing |
164 |
| 166/77.3 |
Chain injector |
72 |
| 166/77.4 |
Piston and cylinder |
62 |
| 166/97.5 |
Parallel pipes extending along distinct paths through wellhead |
45 |
| 166/82.1 |
Releasable seal or cleaner disengaged by projection on inner member |
25 |
| 166/83.1 |
Latches releasable radially inward |
2 |
| 166/93.1 |
Split cap or head |
19 |
| 166/75.14 |
Suspension means |
106 |
| 166/75.12 |
Treatment of produced fluids |
77 |
| 166/75.13 |
Well caps or casing heads |
85 |
| 166/85.1 |
With assembly or disassembly means (e.g., handling, guiding, or tool feature) |
153 |
| 166/85.5 |
Guiding or aligning feature |
110 |
| 166/85.2 |
Pitless well adapters |
27 |
| 166/85.3 |
Seal or bushing insertion or removal |
44 |
| 166/85.4 |
With blowout preventer |
110 |
| 166/91.1 |
With flow restrictions (e.g., chokes or beans) |
54 |
| 166/77.51 |
With means facilitating connecting or disconnecting supported tubing or rod sections |
190 |
| 166/77.53 |
Upper and lower slips |
57 |
| 166/77.52 |
With elevator detail |
79 |
| 166/75.15 |
With means for injecting solid or particulate material into the well |
71 |
| 166/90.1 |
With means for inserting fluid into well |
180 |
| 166/84.1 |
With seal for reciprocating member |
90 |
| 166/84.2 |
Cooling fluid or grease supplied to seals |
28 |
| 166/84.4 |
Fluid pressure actuated seals |
52 |
| 166/84.3 |
Rotary blowout preventer type |
68 |
| 166/84.5 |
Seal fixedly mounted to rod |
13 |
| 166/78.1 |
With tube rotating means (rotary tables) |
78 |
| 166/97.1 |
With valve on cap or head |
81 |
| 166/177.7 |
Agitator |
23 |
| 166/53 |
Automatic |
407 |
| 166/54 |
Float controlled valve |
22 |
| 166/170 |
Brushing, scraping, cutting or punching-type cleaners |
51 |
| 166/172 |
Bow spring type |
8 |
| 166/176 |
On sucker rod |
31 |
| 166/173 |
On tubing or casing |
98 |
| 166/171 |
Perforation cleaners |
11 |
| 166/175 |
Reciprocable relative to central member extending from well top |
18 |
| 166/174 |
Retractable on support while lowering |
20 |
| 166/177.4 |
Cementing device |
142 |
| 166/115 |
Central chamber sealed with respect to prepositioned modified surrounding conduit |
88 |
| 166/116 |
Surrounding conduit carries packer or plug |
24 |
| 166/114 |
Central member with pre-set packer or plug in same conduit |
15 |
| 166/113 |
Combined (e.g., with non-electrical indicating) |
114 |
| 166/242.1 |
Conduit wall or specific conduit end structure |
229 |
| 166/242.9 |
Brick or cement casing liner |
4 |
| 166/242.4 |
Corrosion prevention or deterring |
20 |
| 166/242.6 |
Downhole coupling or connector |
221 |
| 166/242.7 |
Telescopic |
70 |
| 166/242.2 |
Flexible tube or cable |
89 |
| 166/242.3 |
Plural, parallel, nonconcentric conduits |
75 |
| 166/242.8 |
Shoe detail |
55 |
| 166/242.5 |
Side entry |
46 |
| 166/102 |
Convertible |
10 |
| 166/237 |
Detents or clutches |
162 |
| 166/238 |
Flow permitting means bridging fluid conduit |
13 |
| 166/240 |
Lug in closed branched slot |
96 |
| 166/239 |
Operated by dropped weight |
11 |
| 166/206 |
Expansible anchor or casing |
158 |
| 166/213 |
Bowed anchor means |
14 |
| 166/207 |
Expansible casing |
433 |
| 166/217 |
Expansible means translated by wedge or cam |
340 |
| 166/212 |
Fluid pressure actuated |
237 |
| 166/208 |
Liner hanger |
298 |
| 166/209 |
Set by wedge or cam at any point by drop only (e.g., tubing catcher) |
12 |
| 166/210 |
With friction drag for setting by turning movement also |
12 |
| 166/211 |
With spring |
9 |
| 166/214 |
Spring set |
60 |
| 166/215 |
Spring moves anchor slip relative to wedge or cam |
27 |
| 166/216 |
With wedge or cam and friction drag |
96 |
| 166/902 |
For inhibiting corrosion or coating |
243 |
| 166/98 |
Grapple and well anchored lifting means |
90 |
| 166/241.1 |
Guide for device or conduit |
95 |
| 166/241.5 |
For a wireline operation |
53 |
| 166/241.2 |
On sucker or pump rod |
16 |
| 166/241.3 |
Rotatable or having a rotatable element |
42 |
| 166/241.4 |
Surrounding existing rod |
43 |
| 166/241.6 |
Surrounding existing device or tubing |
130 |
| 166/241.7 |
Removably secured by a fastener (e.g., pin) parallel to tubing |
54 |
| 166/177.5 |
Hydraulic fracturing device |
71 |
| 166/100 |
Lateral probe or port sealed against well wall |
95 |
| 166/117.7 |
Means anchored against rotation in one conduit section for relatively rotating another section |
44 |
| 166/54.5 |
Means for cutting cable or rope below ground |
25 |
| 166/54.6 |
Cutting means actuated by contacting element suspended in well by cable or rope |
11 |
| 166/51 |
Means for forming filter beds (e.g., gravel placing) |
342 |
| 166/117.5 |
Means for guiding insertable element laterally of well axis (e.g., whipstock) |
270 |
| 166/117.6 |
Secured in operative position by movable means engaging well conduit (e.g., anchor) |
288 |
| 166/55 |
Means for perforating, weakening, bending or separating pipe at an unprepared point |
325 |
| 166/55.6 |
Cutter rotates circumferentially of pipe |
39 |
| 166/55.7 |
Internal |
119 |
| 166/55.8 |
Tool moved radially by fluid pressure |
68 |
| 166/55.2 |
Perforating or splitting cutter |
93 |
| 166/55.3 |
Wedge or cam actuated |
38 |
| 166/55.1 |
With disparate below ground feature |
301 |
| 166/243 |
Miscellaneous (e.g., anchor pipes) |
83 |
| 166/101 |
Packer or plug and pump or plunger means exerting outward pressure |
15 |
| 166/179 |
Packers or plugs |
74 |
| 166/180 |
Adjustable over pipe or set over prepositioned pipe |
18 |
| 166/196 |
Central support has shoulders expanding sealing portion, or telescopes |
102 |
| 166/188 |
Controllable passage through packer |
88 |
| 166/202 |
Cup type |
81 |
| 166/195 |
Deformable portion engages conduit restriction |
42 |
| 166/187 |
Expanded by confined fluid from central chamber, pump or plunger |
369 |
| 166/192 |
Flow stopping type; e.g., plug |
128 |
| 166/193 |
Free falling type (e.g., dropped ball) |
33 |
| 166/194 |
With sleeve valve |
33 |
| 166/189 |
For non-concentric members |
24 |
| 166/203 |
Non-deformable type |
10 |
| 166/141 |
Sealing portion closes port between central pipe and outside space when unexpanded |
10 |
| 166/191 |
Spaced sealing portions |
193 |
| 166/185 |
With central conduit and fluid port to space outside |
45 |
| 166/186 |
Port between sealing portions and bypass around |
41 |
| 166/183 |
With controllable bypass outside central conduit |
28 |
| 166/142 |
With controllable passage between central chamber and space below packer |
43 |
| 166/145 |
Bypass closing and passage opening to upward flow constrained to occur simultaneously |
8 |
| 166/143 |
Central conduit detachable |
11 |
| 166/144 |
Bottom supported casing or screen section |
5 |
| 166/146 |
Passage connects with space below packers and continuously open passageway connects with space between packers |
4 |
| 166/147 |
Passage connects with space between packer or plug seals |
35 |
| 166/152 |
Passage controllable by movement of central chamber |
24 |
| 166/148 |
Upwardly biased check valve and means for opening or bypassing it |
12 |
| 166/149 |
With passageway between central chamber and space above packer |
4 |
| 166/150 |
Passageway controllable by movement of central chamber |
12 |
| 166/151 |
Passageway valve directly responsive to fluid pressure |
25 |
| 166/184 |
With controllable passage between central conduit and space above packer or plug |
43 |
| 166/181 |
With detachable setting means |
74 |
| 166/182 |
Packer or plug locked expanded |
93 |
| 166/118 |
With expanding anchor |
81 |
| 166/120 |
Anchor actuated by fluid pressure |
217 |
| 166/121 |
Pressure transmitted by cup type packer or plug seal |
5 |
| 166/122 |
Pressure transmitted by packer or plug expanded by confined fluid from central chamber, pump, or plunger |
51 |
| 166/135 |
Flow stopping type, e.g., plug |
80 |
| 166/132 |
Portion extends beyond end of surrounding conduit |
0 |
| 166/119 |
Relatively movable packers or plugs |
18 |
| 166/136 |
Spring set anchor |
24 |
| 166/137 |
Spring moves anchor slip relative to wedge or cam |
18 |
| 166/134 |
Support and holddown expanding anchors |
185 |
| 166/138 |
Wedge or cam and friction drag |
64 |
| 166/140 |
Anchor above packer or plug seal |
29 |
| 166/139 |
Threaded element rotated |
24 |
| 166/129 |
With controllable bypass outside central conduit |
47 |
| 166/130 |
Packer expanded by upper valve |
2 |
| 166/126 |
With controllable passage between central chamber and space below packer |
32 |
| 166/128 |
Passage controllable by movement of central chamber |
28 |
| 166/127 |
Spaced packer or plug seals |
30 |
| 166/131 |
With controllable passage between central conduit and space above packer or plug |
35 |
| 166/133 |
With controllable passage through packer |
76 |
| 166/123 |
With detachable setting means |
156 |
| 166/125 |
Radially movable latch |
83 |
| 166/124 |
Screw threaded |
42 |
| 166/153 |
Pistons, fluid driven into well (e.g., cementing plugs) |
121 |
| 166/154 |
Surrounding conduit valve or closure opened by piston |
51 |
| 166/155 |
With downflow past piston |
62 |
| 166/156 |
With stop |
77 |
| 166/52 |
Plural wells |
117 |
| | Processes (166/244.1) | |
| 166/244.1 |
Processes |
64 |
| 166/378 |
Assembling well part |
116 |
| 166/379 |
Above ground parts |
232 |
| 166/380 |
Conduit |
547 |
| 166/285 |
Cementing, plugging or consolidating |
404 |
| 166/290 |
By tubing which is subsequently lifted |
55 |
| 166/289 |
Discharging cement from casing at different levels |
53 |
| 166/288 |
Including heating |
120 |
| 166/287 |
Removable molding or forming means |
26 |
| 166/286 |
Tamping, vibrating, exploding or using receptacle |
56 |
| 166/292 |
Using specific materials |
497 |
| 166/293 |
Cement or consolidating material contains inorganic water settable and organic ingredients |
560 |
| 166/294 |
Cement or consolidating material is organic or has organic ingredient |
467 |
| 166/295 |
Organic material is resin or resinous |
818 |
| 166/291 |
With piston separator |
216 |
| 166/300 |
Chemical inter-reaction of two or more introduced materials (e.g., selective plugging or surfactant) |
827 |
| 166/311 |
Cleaning or unloading well |
282 |
| 166/312 |
Liquid introduced from well top |
495 |
| 166/263 |
Cyclic injection then production of a single well |
121 |
| 166/376 |
Destroying or dissolving well part |
132 |
| 166/377 |
Disassembling well part |
164 |
| 166/304 |
Dissolving or preventing formation of solid oil deposit |
196 |
| 166/268 |
Distinct, separate injection and producing wells |
238 |
| 166/269 |
Fluid injected from longitudinally spaced locations in injection well |
82 |
| 166/271 |
Including fracturing or attacking formation |
211 |
| 166/275 |
Injected fluid comprises water and material other than inorganic gas |
476 |
| 166/270.1 |
Injecting a composition including a surfactant or cosurfactant |
417 |
| 166/270.2 |
Nonaqueous type |
28 |
| 166/270 |
Injecting a composition to adjust the permeability (e.g., selective plugging) |
248 |
| 166/272.1 |
Involving the step of heating |
210 |
| 166/272.7 |
Horizontal well |
73 |
| 166/272.2 |
In association with fracturing or crevice forming processes |
39 |
| 166/272.6 |
Liquid material injected |
61 |
| 166/272.3 |
Steam as drive fluid |
317 |
| 166/272.4 |
In combination with alkyls or carbon chains |
34 |
| 166/272.5 |
With override zone, diverting, or path blocking operation |
27 |
| 166/400 |
Sequentially injected separate fluids (e.g., slugs) |
154 |
| 166/401 |
Injecting a gas or gas mixture |
141 |
| 166/402 |
Co2 or carbonated gas |
150 |
| 166/403 |
In combination with additional organic material (e.g., alkyls, carbon chains) |
43 |
| 166/248 |
Electric current or electrical wave energy through earth for treating |
224 |
| 166/310 |
Entraining or incorporating treating material in flowing earth fluid |
229 |
| 166/284 |
Fluid flow causes pellet to block opening in wall of conduit |
49 |
| 166/301 |
Freeing stuck object, grappling or fishing in well |
199 |
| 166/278 |
Graveling or filter forming |
538 |
| 166/302 |
Heating, cooling or insulating |
499 |
| 166/303 |
Placing preheated fluid into formation |
343 |
| 166/256 |
In situ combustion |
116 |
| 166/259 |
Including fracturing or attacking formation |
213 |
| 166/260 |
Injecting specific fuel or catalyst for burning into formation |
58 |
| 166/261 |
Injecting specific material other than oxygen into formation |
254 |
| 166/257 |
Injecting while producing by in situ combustion from same well |
51 |
| 166/258 |
Plural distinct superimposed formations |
23 |
| 166/262 |
Solid fuel or particles in well |
14 |
| 166/279 |
Material placed in pores of formation to treat resident fluid flowing into well |
197 |
| 166/247 |
Nuclear energy or radioactivity for treating |
20 |
| 166/373 |
Operating valve, closure, or changeable restrictor in a well |
366 |
| 166/374 |
Operated by fluid pressure controlled above ground |
188 |
| 166/375 |
By auxilliary fluid control line |
127 |
| 166/313 |
Parallel string or multiple completion well |
390 |
| 166/297 |
Perforating, weakening, bending or separating pipe at an unprepared point |
547 |
| 166/298 |
Perforating, weakening or separating by mechanical means or abrasive fluid |
237 |
| 166/305.1 |
Placing fluid into the formation |
604 |
| 166/307 |
Attacking formation |
432 |
| 166/306 |
Fluid enters and leaves well at spaced zones |
102 |
| 166/308.1 |
Fracturing (epo) |
479 |
| 166/308.2 |
Using a chemical (epo) |
205 |
| 166/308.6 |
Foam (epo) |
70 |
| 166/308.5 |
Including cross-linking agent (epo) |
191 |
| 166/308.4 |
Oil based composition (epo) |
54 |
| 166/308.3 |
Water based composition with inorganic material (epo) |
81 |
| 166/381 |
Placing or shifting well part |
299 |
| 166/383 |
By fluid driven piston |
152 |
| 166/385 |
Flexible cable or wire |
247 |
| 166/386 |
Fluid flow control member (e.g., plug or valve) |
544 |
| 166/382 |
Providing support for well part (e.g., hanger or anchor) |
585 |
| 166/384 |
With bending of tubing |
299 |
| 166/387 |
With sealing feature (e.g., packer) |
699 |
| 166/296 |
Preventing flow into strainer while lowering by blocking openings |
47 |
| 166/309 |
Producing foam or gas in well by foaming or gas producing material |
228 |
| 166/369 |
Producing the well |
380 |
| 166/372 |
By fluid lift |
315 |
| 166/371 |
Including non-expulsive material placed in well |
139 |
| 166/370 |
Including varying downhole pressure |
216 |
| 166/276 |
Providing porous mass of adhered filter material in well |
157 |
| 166/277 |
Repairing object in well |
173 |
| 166/264 |
Sampling well fluid |
321 |
| 166/281 |
Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking formation |
280 |
| 166/265 |
Separating material entering well |
221 |
| 166/266 |
Injection and producing wells |
231 |
| 166/267 |
Separating outside of well |
517 |
| 166/282 |
Specific low fluid loss feature for fluid attacking formation |
75 |
| 166/283 |
Specific low fluid loss feature for fracturing fluid or cement causes fracture |
128 |
| 166/245 |
Specific pattern of plural wells |
328 |
| 166/280.1 |
Specific propping feature (epo) |
194 |
| 166/280.2 |
Composition of proppant (epo) |
181 |
| 166/246 |
Using microorganisms |
180 |
| 166/249 |
Vibrating the earth or material in or being placed in the earth pores |
140 |
| 166/299 |
With explosion or breaking container to implode |
173 |
| 166/250.01 |
With indicating, testing, measuring or locating |
502 |
| 166/250.15 |
Automatic control for production |
195 |
| 166/250.07 |
Bottom hole pressure |
119 |
| 166/250.03 |
Determining fluid interface or fluid level |
62 |
| 166/254.1 |
Determining position of earth zone or marker |
48 |
| 166/254.2 |
Well logging |
156 |
| 166/255.1 |
Determining position of object in well |
105 |
| 166/255.2 |
Tool orienting |
78 |
| 166/255.3 |
Using whipstock |
16 |
| 166/250.13 |
Determining stuck point |
10 |
| 166/250.1 |
Fracturing characteristic |
136 |
| 166/250.11 |
Holder for coupon or sensor |
57 |
| 166/250.09 |
Impression means |
25 |
| 166/251.1 |
Including in situ combustion |
53 |
| 166/252.1 |
Including production of earth fluid by driving fluid |
78 |
| 166/252.6 |
And tracing material |
25 |
| 166/252.4 |
Flood front |
13 |
| 166/252.5 |
Permeability or viscosity |
24 |
| 166/252.2 |
Residual oil or oil saturation |
27 |
| 166/252.3 |
Salinity or acidity |
23 |
| 166/250.17 |
Including testing or treating tool having at least one actuatable packer |
118 |
| 166/253.1 |
Indicating the location, presence, or absence of cement |
36 |
| 166/250.08 |
Leak testing or locating |
60 |
| 166/250.14 |
Of cementing or plugging technique |
62 |
| 166/250.02 |
Permeability determining |
58 |
| 166/250.04 |
Plug indicating or releasing |
11 |
| 166/250.16 |
Prospecting |
39 |
| 166/250.05 |
Scale or corrosion determination |
17 |
| 166/250.06 |
Steam quality |
7 |
| 166/250.12 |
Tracer |
47 |
| 166/117 |
Receptacle or part thereof left in well |
28 |
| 166/162 |
Receptacles |
63 |
| 166/167 |
Bottom receiving and side discharge valves |
20 |
| 166/169 |
Lateral ports used in well |
87 |
| 166/168 |
Readily releasable bottom valve |
15 |
| 166/166 |
Valve control means contacting well conduit wall |
7 |
| 166/164 |
With destroyable closure and valve |
16 |
| 166/163 |
With separate air chamber having openable passage |
18 |
| 166/165 |
With valved or closed top |
22 |
| 166/56 |
Screen and outside cleaning pipe |
5 |
| 166/205 |
Screen with valve, closure, changeable restrictor or portion removable in well |
79 |
| 166/157 |
Screen with washing point or shoe |
16 |
| 166/158 |
Detachable wash pipe |
7 |
| 166/227 |
Screens |
161 |
| 166/236 |
Concentric pipes |
114 |
| 166/229 |
Inserted screen plug |
14 |
| 166/228 |
Porous material |
76 |
| 166/231 |
Spiral |
44 |
| 166/233 |
With perforated pipe |
83 |
| 166/232 |
With spacing lug for adjacent turns |
10 |
| 166/235 |
Stacked annular sections |
32 |
| 166/234 |
Strip or rod |
22 |
| 166/230 |
Woven mesh |
46 |
| 166/177.1 |
Sonic device |
45 |
| 166/177.2 |
With specific downhole feature |
52 |
| 166/335 |
Submerged well |
54 |
| 166/338 |
Connection or disconnection of submerged members remotely controlled |
110 |
| 166/349 |
Connection of guide means |
58 |
| 166/348 |
Connection of pipe hanging |
166 |
| 166/344 |
Connection to provide fluid flow path |
166 |
| 166/347 |
Connection of lateral flow line |
77 |
| 166/345 |
Connection of riser-and-tubing assembly to other structure |
138 |
| 166/346 |
Yieldable tubing |
28 |
| 166/340 |
Disconnection |
78 |
| 166/341 |
With orienting or aligning of member for connection |
186 |
| 166/343 |
Including means to pull member into position |
77 |
| 166/342 |
Including removable, member mounted guide |
45 |
| 166/339 |
With provision for removal or repositioning of member without removal of other well structure |
117 |
| 166/364 |
Including disaster feature |
65 |
| 166/351 |
Means removably connected to permanent well structure |
61 |
| 166/358 |
Drilling means |
86 |
| 166/356 |
Means to provide protective environment for operative access below surface of water |
81 |
| 166/361 |
Pipe cutting means |
37 |
| 166/359 |
Removable riser |
150 |
| 166/357 |
Separator |
87 |
| 166/352 |
Surface vessel |
79 |
| 166/354 |
Having means to hold vessel at given location (e.g., anchor, etc.) |
30 |
| 166/353 |
Having means to move vessel to precise location |
15 |
| 166/355 |
With means to compensate for vessel movement |
179 |
| 166/360 |
Well component assembly means |
74 |
| 166/366 |
Multiple wells |
131 |
| 166/367 |
Riser |
290 |
| 166/350 |
Submerged, buoyant wellhead or riser |
186 |
| 166/336 |
Testing |
78 |
| 166/337 |
For leak |
40 |
| 166/368 |
Wellhead |
314 |
| 166/365 |
With provision for disassembly |
67 |
| 166/363 |
With safety or emergency shutoff |
97 |
| 166/316 |
Valves, closures or changeable restrictors |
70 |
| 166/317 |
Destructible element |
246 |
| 166/319 |
Fluid operated |
304 |
| 166/321 |
Fluid pressure biased to open position position |
364 |
| 166/323 |
Locked open or closed |
162 |
| 166/322 |
Retrievable |
114 |
| 166/324 |
With fluid pressure equalizing means |
181 |
| 166/329 |
Loose ball closure with limited reverse flow |
13 |
| 166/325 |
One way, e.g., check valve type |
180 |
| 166/326 |
Flexible valve element |
28 |
| 166/327 |
Shoes with check valve |
50 |
| 166/328 |
Loose ball closure |
33 |
| 166/320 |
Variably opened |
112 |
| 166/332.1 |
Longitudinally movable operator |
117 |
| 166/333.1 |
Contact with bore bottom |
11 |
| 166/332.8 |
Flapper type |
125 |
| 166/332.6 |
Having a dump or discharge type means |
7 |
| 166/332.7 |
Having equalizing valve |
36 |
| 166/332.2 |
Having rotational movement |
30 |
| 166/332.3 |
Ball valve type |
39 |
| 166/332.4 |
Operated by means inserted from the surface |
108 |
| 166/332.5 |
Valving means inserted or retrieved to operate |
41 |
| 166/334.1 |
Vertical movement of conduit |
58 |
| 166/334.2 |
And rotational movement; e.g., ball valve-type |
21 |
| 166/334.3 |
Drain-type |
5 |
| 166/334.4 |
Fluid flow through lateral port to exterior |
115 |
| 166/318 |
Operated by dropped element |
146 |
| 166/330 |
Rotated operator |
55 |
| 166/331 |
Lug in branched slot, e.g., "j" slot |
51 |
| 166/177.6 |
Vibrator |
58 |
| 166/901 |
Wells in frozen terrain |
36 |
| 166/50 |
Wells with lateral conduits |
679 |
| 166/222 |
Whirling or lateral discharge or projectable nozzles |
105 |
| 166/223 |
Rotary or projectable |
58 |
| 166/177.3 |
Wiper |
41 |
| 166/67 |
With below and above ground modification |
51 |
| 166/72 |
Above ground actuating means for below ground device |
186 |
| 166/73 |
Tubing or casing actuated |
37 |
| 166/68 |
Eduction pump or plunger in well |
277 |
| 166/68.5 |
With above ground (1) motor carried by casing or casing support or (2) well fluid pump |
144 |
| 166/70 |
Head for tool, piston or cleaner (e.g., cement head) |
108 |
| 166/71 |
With above ground casing sinking means |
6 |
| 166/74 |
With below ground screen |
19 |
| 166/69 |
With receptacle for insertion into well |
23 |
| 166/105 |
With eduction pump or plunger |
344 |
| 166/105.5 |
Having liquid-gas separator |
168 |
| 166/105.6 |
Gas fed to entrainment type pump |
19 |
| 166/105.1 |
Having sediment trap or deflector |
47 |
| 166/105.2 |
Carried by reciprocating plunger or plunger rod |
21 |
| 166/105.4 |
In pump discharge flow path |
17 |
| 166/105.3 |
Sediment trap formed in pumping chamber |
19 |
| 166/107 |
Receptacles |
41 |
| 166/111 |
Bail engaging piston rod |
1 |
| 166/110 |
Lateral port always below piston and used in well |
12 |
| 166/108 |
Piston actuates foot valve |
16 |
| 166/109 |
Telescoping |
12 |
| 166/112 |
With leak means |
12 |
| 166/106 |
With packer or plug |
207 |
| 166/65.1 |
With electrical means |
536 |
| 166/66.4 |
Electrical motor (e.g., solenoid actuator) |
175 |
| 166/66 |
Indicating |
436 |
| 166/66.5 |
Magnetic |
172 |
| 166/66.6 |
Valve |
94 |
| 166/66.7 |
Longitudinally movable operator |
91 |
| 166/63 |
With explosive or gas generating means in well |
188 |
| 166/57 |
With heating, refrigerating or heat insulating means |
236 |
| 166/59 |
Burner in well |
95 |
| 166/60 |
Electrical heater in well |
215 |
| 166/58 |
Fuel supply or hot billet in well |
13 |
| 166/61 |
Heater surrounding production tube |
32 |
| 166/62 |
With eduction pump or plunger in well |
38 |
| 166/178 |
With jar means for releasing stuck part |
148 |
| 166/99 |
With junk retrieving means |
76 |
| 166/54.1 |
With means for separately pumping from plural sources in well |
22 |
| 166/104 |
With motor for rotary or oscillating motion |
38 |
| 166/64 |
With time or distance measuring, temperature responsive or counting means |
188 |
