Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| RE40308 | Multi-purpose injection and production well system A method and apparatus for simultaneously producing fluid from one or more zones of an oil or gas well, while injecting fluid into one or more other zones of the well, and for converting a depleted production zone into an injection zone, by remotely shifting sleeves... | 05/13/2008 |
| 7228897 | Cement through side pocket mandrel Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimul... | 06/12/2007 |
| 7069992 | Mono-trip cement thru completion In systems and methods for production of hydrocarbons fluids from a formation surrounding a wellbore, a production assembly is cemented into place, and excess cement is then cleaned from the production tubing and liner. Thereafter, hydrocarbon fluids are produced an... | 07/04/2006 |
| 6973971 | Down hole well cleaning apparatus An apparatus and a method for cleaning the open perforations in a well and for bailing a well. The apparatus has a tubular conduit with at least one seal attached to it that forms a seal between the well casing and the exterior of the conduit. The seal is held in pl... | 12/13/2005 |
| 6966366 | Plunger enhanced chamber lift for well installations The present invention is addressed to a method of retro-fitting a well installation to reconfigure it to provide plunger enhanced chamber lift. The method comprises the steps of providing a reel-carried supply of coil tubing, a primary seating nipple assembly, a pri... | 11/22/2005 |
| 6481503 | Multi-purpose injection and production well system A method and apparatus for simultaneously producing fluid from one or more zones of an oil or gas well, while injecting fluid into one or more other zones of the well, and for converting a depleted production zone into an injection zone, by remotely shift... | 11/19/2002 |
| 6182765 | System and method for deploying a plurality of tools into a subterranean well A system for, and method of deploying a selected one of a plurality of tools into a subterranean well and a well employing the system or the method. In one embodiment, the system includes: (1) a tool selector capable of receiving each of the plurality of ... | 02/06/2001 |
| 5088559 | Method and apparatus for running wireline and reeled tubing into a wellbore and stuffing box used in connection therewith A method and apparatus for running wireline and reeled tubing into a wellbore in which an adapter tube extends through the reeled tubing injector to enable the wireline rig to be mounted on the reeled tubing rig. A stuffing box is also provided which can ... | 02/18/1992 |
| 4926936 | Multiple purpose liner hanger construction A mechanical or hydraulic actuated liner hanger for supporting on an operating string to be lowered to position a liner on a tubular member in a well bore includes an integral tubular body having upper and lower annular rings thereon. A surface is provide... | 05/22/1990 |
| 4664196 | Downhole tool with compressible liquid spring chamber A downhole tool such as a tester valve originally constructed to operate with a compressible gas spring may be modified to operate with a compressible liquid spring. The volume of a spring chamber is increased. A differential area of a power piston is dec... | 05/12/1987 |
| 4480697 | Method and apparatus for converting an oil well to a well with effluent raising by gas-lift The present invention relates to a method of and apparatus for converting an oil well with natural effluent rise to one with gas-lift of the effluent column, wherein the oil well has a nipple in the production tube provided with a stop-groove and smooth b... | 11/06/1984 |
| 4467865 | Well packer provided with dual methods of use A low-cost, easily operable oil well packer is disclosed comprising two, spaced, circular restrainers attached to a producing casing section and connected by a hollow, flexible, cylindrical member surrounding the production casing section. The restraining... | 08/28/1984 |
| 4421175 | Method of drilling and casing a well A well drilling rig having a rotary table for driving a drill string rotatively and having jacking mechanism for lowering casing into the well after drilling, with the jacking mechanism including fluid pressure actuated piston and cylinder means which may... | 12/20/1983 |
