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Class Information
Number: 166/120
Name: Wells > Packers or plugs > With expanding anchor > Anchor actuated by fluid pressure
Description: Devices in which the anchoring means is movable to set or inset position, all or part of the movement being due to fluid pressure.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4697640 |
Apparatus for setting a high temperature packer |
Oct. 6, 1987 |
| 4688634 |
Running and setting tool for well packers |
Aug. 25, 1987 |
| 4688641 |
Well packer with releasable head and method of releasing |
Aug. 25, 1987 |
| 4679624 |
Hydraulic setting tool |
Jul. 14, 1987 |
| 4669538 |
Double-grip thermal expansion screen hanger and running tool |
Jun. 2, 1987 |
| 4669539 |
Lock for downhole apparatus |
Jun. 2, 1987 |
| 4660637 |
Packer and service tool assembly |
Apr. 28, 1987 |
| 4657084 |
Twin seal well packer |
Apr. 14, 1987 |
| 4611658 |
High pressure retrievable gravel packing apparatus |
Sep. 16, 1986 |
| 4588029 |
Expandable metal seal for a well tool |
May. 13, 1986 |
| 4588030 |
Well tool having a metal seal and bi-directional lock |
May. 13, 1986 |
| 4582134 |
Well packer |
Apr. 15, 1986 |
| 4567944 |
Retrievable straddle packer |
Feb. 4, 1986 |
| 4531581 |
Piston actuated high temperature well packer |
Jul. 30, 1985 |
| 4526229 |
Hydraulic packer assembly |
Jul. 2, 1985 |
| RE31933 |
High temperature well packer |
Jul. 2, 1985 |
| 4516634 |
Hydraulic running and setting tool for well packer |
May. 14, 1985 |
| 4512399 |
Well packer |
Apr. 23, 1985 |
| 4508167 |
Selective casing bore receptacle |
Apr. 2, 1985 |
| 4505332 |
Well packers |
Mar. 19, 1985 |
| 4500095 |
Inflatable oil well hole plug with reinforcing wires |
Feb. 19, 1985 |
| 4493374 |
Hydraulic setting tool |
Jan. 15, 1985 |
| 4492383 |
Inflatable well bore packer with pressure equalized rib cavity |
Jan. 8, 1985 |
| 4487258 |
Hydraulically set well packer |
Dec. 11, 1984 |
| 4452304 |
Remotely operated packer and anchor apparatus for changing a geothermal wellhead valve |
Jun. 5, 1984 |
| 4441552 |
Hydraulic setting tool with flapper valve |
Apr. 10, 1984 |
| 4441559 |
Retrievable well packer |
Apr. 10, 1984 |
| 4438933 |
Hydraulic set high temperature isolation packer |
Mar. 27, 1984 |
| 4437517 |
Slip mechanism for subterreanean wells |
Mar. 20, 1984 |
| 4437516 |
Combination release mechanism for downhole well apparatus |
Mar. 20, 1984 |
| 4436149 |
Hydraulic setting tool |
Mar. 13, 1984 |
| 4432417 |
Control pressure actuated downhole hanger apparatus |
Feb. 21, 1984 |
| 4424861 |
Inflatable anchor element and packer employing same |
Jan. 10, 1984 |
| 4423777 |
Fluid pressure actuated well tool |
Jan. 3, 1984 |
| 4423783 |
Method for plugging a well and bridge plug |
Jan. 3, 1984 |
| 4413677 |
Dual string well packer |
Nov. 8, 1983 |
| 4411435 |
Seal assembly with energizing mechanism |
Oct. 25, 1983 |
| 4393929 |
Well packers and slip assemblies for use therewith |
Jul. 19, 1983 |
| 4387767 |
Subsurface safety valve system with hydraulic packer |
Jun. 14, 1983 |
| 4385664 |
Frangible cup thermal packer assembly for cased wells |
May. 31, 1983 |
| 4375240 |
Well packer |
Mar. 1, 1983 |
| 4372562 |
Inflatable packer with liquid resin anchored reinforcing sheath |
Feb. 8, 1983 |
| 4352394 |
Cable-suspended well pumping systems |
Oct. 5, 1982 |
| 4350371 |
Subsea pipe connector |
Sep. 21, 1982 |
| 4349204 |
Non-extruding inflatable packer assembly |
Sep. 14, 1982 |
| 4345649 |
Well packer |
Aug. 24, 1982 |
| 4339000 |
Method and apparatus for a bridge plug anchor assembly for a subsurface well |
Jul. 13, 1982 |
| 4311195 |
Hydraulically set well packer |
Jan. 19, 1982 |
| 4311194 |
Liner hanger and running and setting tool |
Jan. 19, 1982 |
| 4305465 |
Subsurface tubing hanger and stinger assembly |
Dec. 15, 1981 |
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