Famous Patents
Pong, the Atari creation that launched the computer game craze, came with these instructions: "Avoid missing ball for high score."
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 |
| 7950450 | Apparatus and methods of cleaning and refinishing tubulars A method for cleaning and/or altering an inside surface and shape of a tubular is disclosed. The method includes placing a surface finishing tool in the tubular, energizing the surface finishing tool, and causing extendable assemblies therein to extend radially to c... | 05/31/2011 |
| 7341980 | Viscoelastic surfactant rheology modification A method for shortening the shear recovery time of zwitterionic viscoelastic surfactant fluids by adding a rheology enhancer having the structure: R-(EO)x(PO)y—R′—OH in which R is an alkyl group that is straight chaine... | 03/11/2008 |
| 7328749 | Method and apparatus for accumulating liquid and initiating upward movement when pumping a well with a sealed fluid displacement device Liquid is accumulated above fluid displacement device which is moveable and sealed within a production chamber defined by a production tubing, and upward movement of the fluid displacement device is initiated to pump liquid and gas from a well, by different magnitud... | 02/12/2008 |
| 7314083 | Slow rotation fluid jetting tool for cleaning a well bore A rotary jetting tool for connection to a hollow, fluid conducting workover string has a main tool body with a hollow central passageway and a rotatable jet carrier mounted on a depending central shaft. A rotor, with fluid conducting passageways is mounted on the ce... | 01/01/2008 |
| 7311141 | Casing scraper A casing scraper comprises a plurality of blade modules mounted on a mandrel. The blade modules are identical to each other and have castellated ends which are engaged with the couplers to prevent relative rotation between the modules. By manipulation of a thread pr... | 12/25/2007 |
| 7291651 | Carbon dioxide foamed fluids An aqueous viscoelastic surfactant (VES) fluid foamed or energized with carbon dioxide, in which the VES is more compatible with the carbon dioxide, is made by the addition of one or more than one synergistic co-surfactant. The synergist co-surfactant includes quate... | 11/06/2007 |
| 7275592 | Oil well pump apparatus An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working fluid is provided that can be pumped into the production tubing. A prime ... | 10/02/2007 |
| 7210529 | Casing brush tool A casing brush tool for cleaning interior walls of a well bore casing. The brush tool has a free rotating sleeve mounted on a mandrel with bearings mounted between the sleeve and the mandrel to facilitate rotation. The sleeve carries a plurality of non-axial rows of... | 05/01/2007 |
| 7191838 | Method and apparatus for pumping wells with a sealing fluid displacement device Liquid is lifted from a well by a fluid displacement device which moves within a production tubing and maintains a seal against the production tubing during movement. The fluid displacement device is moved up and down within the production tubing between the well bo... | 03/20/2007 |
| 7174958 | Drill string member A drill-string member includes at least one grooved portion on an outer surface thereof. A pair of axially spaced-apart grooved portions are typically provided, with two such pairs axially spaced along the longitudinal length of the member. A plurality of grooves ar... | 02/13/2007 |
| 7159668 | Centralizer A centralizer 10 for mounting on a tubular member such as a section of casing, together with one or more stops 42, 48 for retaining the centralizer thereon. The stops 42, 48 are provided with profiles for engaging the centralizer to restrict rot... | 01/09/2007 |
| 7159653 | Spacer sub The present invention involves a method and apparatus for communicating from within a wellbore to the surface of the wellbore, as well as communicating from the surface of the wellbore to downhole within the wellbore. More specifically, the present invention involve... | 01/09/2007 |
| 7121336 | Well scrubber A cylindrical brush for scrubbing the inside surface of a pipe is made of bristles attached to a springy helix. The diameter of the brush is greater than the inside diameter of the pipe. When the brush is pushed through the pipe the helix collapses and compacts the ... | 10/17/2006 |
| 7096950 | Combined milling and scraping tool A downhole tool (1) for providing the dual role of cleaning and milling within a wellbore casing or liner is described. In an embodiment scraper blades (6) are mounted on a body (2) together with a milling sleeve (4). Additionally, a cent... | 08/29/2006 |
| 7049436 | Carbon dioxide compatible non-aqueous crosslinked fracturing fluids and methods for their use Alcohol based hydraulic fracturing fluids useful for treating oil and gas wells are disclosed. The fluids are compatible with carbon dioxide, and comprise an alcohol, a polymer, a crosslinking agent, and a breaker. Hydroxypropyl guar with a molar substitution of abo... | 05/23/2006 |
| 6971856 | Plunger for well casings and other tubulars A plunger for well casings and tubulars comprising: an upper valve rod segment slideably positioned within the plunger body; a valve rod tube slideably positioned in the lower end of the plunger body; a lower valve rod segment slideably positioned in the valve rod t... | 12/06/2005 |
| 6923255 | Activating ball assembly for use with a by-pass tool in a drill string A by-pass tool to be incorporated in a drill string, in combination with an activating ball assembly operative to adjust the tool between an activated mode and a de-activated mode. The tool has a valve seat engageable by the activating ball assembly to move its slee... | 08/02/2005 |
| 6775872 | Surface-traversing vehicle A vehicle for traversing a surface such as for carrying out an inspection, survey or maintenance operation upon that surface comprises two bodies interconnected by means to move the bodies towards and away from each other, each of those bodies being supported upon a... | 08/17/2004 |
| 6575239 | Well cleaning tool A well cleaning tool adapted for connection to a drill string for removing debris and residues from the inner wall of a well casing, comprises an elongate generally cylindrical member (1) having a plurality of scratching elements (2) in the outer surface ... | 06/10/2003 |
| 6546581 | Casing scraper A casing scraper for cleaning the internal wall of a tube 26 such as a well casing has at least three, rigidly connected, axially and angularly spaced scraper bodies 12, 14, 16 each with a scraping surface 13, 15, 17. The radial dimension of the scraper a... | 04/15/2003 |
| 6530429 | Downhole cleaning tool with shear clutch A cleaning tool (1) for cleaning casing within a wellbore is comprised of an upper (3) and lower (4) sleeve which are mounted via ball bearings (5) on a work string (2). The ball bearings enable the upper (3) and lower (4) sleeves to have no or negligible... | 03/11/2003 |
| 6523615 | Electropolishing method for oil field tubular goods and drill pipe A method of producing fluids from a well bore by polishing the inside diameter surface of a down-hole tubular. The method includes the steps of providing a down-hole tubular having an inside diameter and being made of a carbon steel alloy or a high chromi... | 02/25/2003 |
| 6523612 | Method and apparatus for cleaning wellbore casing One or more brush bodies fabricated from an incompressible material, for example, from high density polyurethane, high density polyethylene, high density polypropylene, nylon, ORLON--synthetic forming polymers and copolymers of acrylic acid or its derivat... | 02/25/2003 |
| 6455483 | Well stimulation and formation purging composition A well stimulation and purging composition which is typically used in well cleanup, well stimulation and formation purging applications for enhancing oil and gas production. The composition is a cationic surfactant characterized by a homogenous aqueous so... | 09/24/2002 |
| 6343648 | Down-hole tool with detachable cleaning pads A down-hole tool for use in an oil or gas well is provided with detachable components that are held to a body or tool housing by longitudinal mechanical fasteners disposed in a generally radial orientation. The mechanical fasteners allow for the component... | 02/05/2002 |
| 6302201 | Method and apparatus for washing subsea drilling rig equipment and retrieving wear bushings A downhole tool for cleaning internal surfaces of subsea drilling rig equipment, including drilling risers, blowout preventor assemblies and wellhead assemblies, as well as for retrieving wear bushings, comprising an elongated support body, at least a pai... | 10/16/2001 |
| 6227291 | Compact well clean up tool with multifunction cleaning apparatus A well cleaning tool for cleaning the inside walls of a well casing has at least two types of cleaning members; for example it may have a row of scraper blades and a row of brushes. The tool may also include one or more rotatable stabilizers that serve to... | 05/08/2001 |
| 6190090 | Apparatus for use in a pipeline An apparatus for use in a pipeline is disclosed. The apparatus has a housing through which pipeline fluids may enter from the rear of the housing, pass through the housing and subsequently exit from the housing. A first bonnet, having several openings, is... | 02/20/2001 |
| 6148921 | Oil extracting installation incorporating manifold support mounting plates, and plate The invention features an offshore oil installation (1) comprising two mounting plates (6, 8) resting on the ocean bed, each mounting plate (6, 8) supporting a manifold (10; 10') connected at two ends with two respective terminal joining pieces of flexibl... | 11/21/2000 |
| 6079498 | Method and equipment for the flow of offshore oil production This invention relates to a method and equipment to assist the flow of offshore oil production. At least three production flow lines are used, which are interconnected close to offshore well-heads or manifolds forming two U-shaped lengths of pipe acting a... | 06/27/2000 |
| 6076603 | Method for removal and treatment of paraffin A method of removing paraffin from a wellbore at a well site having production tanks includes the following steps of heating a scraper to at least about the melting temperature of paraffin; lowering the scraper into a wellbore and below a paraffin accumul... | 06/20/2000 |
| 6032929 | Arrangement in connection with a yoke in a hoisting system for a derrick A hydraulically-operated hoist is disclosed. The hoist includes a plurality of hydraulic piston/cylinder arrangements, each having an upper end. Two guide rails are disposed in parallel with the hydraulic piston/cylinder arrangements. A self-aligning yoke... | 03/07/2000 |
| 5884700 | Interior coating of gas well tubing A method and apparatus for treating the production tubing string of a flowing gas well is disclosed. The method includes introducing treatment fluid into the wellhead end of the production tubing string, allowing an applicator fall through the production ... | 03/23/1999 |
| 5732774 | Drill wiper assembly An improved pipe wiping device is set forth which incorporates from an upper end fishing neck, a threaded connection for a central mandrel and multiple pipe wiping elements which are formed of flat resilient sheet material cut in circular fashion and havi... | 03/31/1998 |
| 5372191 | Device for removing paraffin and other deposits from the internal surface of pipes A device comprises cleaning heads 4,5 mounted on a shaft for free rotation. On sinking and elevating the device on a tractive member, in a liquid up-current, the heads start rotating in different sides. Cutting elements--knives--having an involute profile... | 12/13/1994 |
| 5267616 | Process for running scrapers, particularly for subsea petroleum well lines A process for running scrapers for subsea petroleum well lines has, according to a first embodiment, launching of a scraper through the line to be disobstructed, towards the wellhead on a step-by-step basis. The operation proceeds by sending the scraper a... | 12/07/1993 |
| 5168929 | Method and apparatus for removal of oil well paraffin An oil well tool and method for its use for removing accumulated deposits along an oil well tubing in a downhole pump operated oil well is disclosed. The tool when in use is untethered and adapted to be lowered through an oil well tubing under its own wei... | 12/08/1992 |
| 5127125 | Pipeline scraper A pipeline scraper comprising an elongated scraper body of preferably elastomeric solid material, having at least one annular sealing surface on both sides of a section having a smaller diameter, the distance between the sealing surfaces being equal to or... | 07/07/1992 |
| 5113544 | Pipeline pig A pig which may be propelled by fluid flow through a pipeline includes a cupped or hollow spherical head having an inside and an outside. The head has an opening for facing upstream and receiving fluid flow in the pipeline and has an outside for facing do... | 05/19/1992 |
| 5058668 | Rod guide bearing assembly for oil well pumping apparatus In well pumping apparatus in which a polished rod is arranged for extension through a stuffing box at the upper end of a wellhead, the stuffing box assembly having a pair of axially spaced bearing assemblies and packing coils positioned between rod guide ... | 10/22/1991 |
