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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:

Class Number Class Name Patents
166/121 Pressure transmitted by cup type packer or plug seal 11
166/122 Pressure transmitted by packer or plug expanded by confined fluid from central chamber, pump, or plunger 62


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
4745971 Multiple string well packer May. 24, 1988
4730835 Anti-extrusion seal element Mar. 15, 1988
4726419 Single zone gravel packing system Feb. 23, 1988
4718495 Surface packer and method for using the same Jan. 12, 1988
4709758 High temperature packer for well conduits Dec. 1, 1987
4699216 Blowout preventer for a side entry sub Oct. 13, 1987
4697640 Apparatus for setting a high temperature packer Oct. 6, 1987
4688641 Well packer with releasable head and method of releasing Aug. 25, 1987
4688634 Running and setting tool for well packers Aug. 25, 1987
4679624 Hydraulic setting tool Jul. 14, 1987
4669539 Lock for downhole apparatus Jun. 2, 1987
4669538 Double-grip thermal expansion screen hanger and running tool 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
4441559 Retrievable well packer Apr. 10, 1984
4441552 Hydraulic setting tool with flapper valve Apr. 10, 1984
4438933 Hydraulic set high temperature isolation packer Mar. 27, 1984
4437516 Combination release mechanism for downhole well apparatus Mar. 20, 1984
4437517 Slip mechanism for subterreanean wells 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

1 2 3 4 5










 
 
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