Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 8127851 | Mill and method for drilling composite bridge plugs A system used to remove multiple isolation plugs from a wellbore. The system is efficient in fluidizing and circulating proppant located below an upper plug resting on top of proppant settled above a lower plug. The system uses a central port of the mill that is in ... | 03/06/2012 |
| 8122962 | Apparatus and method for deliquifying a well The invention is directed to an apparatus, system and method for deliquifying a well. A body having gas supply passages is lowered into a well bore on the end of a string of supply tubing. A string of return tubing is lowered through the supply tubing and is inserte... | 02/28/2012 |
| 8113285 | Agitated wellbore cleaning tool and method A wellbore cleaning assembly is run into a wellbore to be cleaned on a work string. The cleaning assembly comprises a number of cleaning elements for cleaning a wall of the wellbore; and an oscillator coupled to the at least one cleaning element by a force transmiss... | 02/14/2012 |
| 8091644 | Microemulsion or in-situ microemulsion for releasing stuck pipe Nanoemulsion, macroemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor I, II or III phase behavior) or single phase microemulsions (Winsor IV) improve the removal of filter cakes formed during hydrocarbon reservoir wellbore drill... | 01/10/2012 |
| 8082996 | Equipment for excavation of deep boreholes in geological formation and the manner of energy and material transport in the boreholes Utilization of geothermal energy in depths above 5 km could contribute considerably to resolving the global problems related to a lack of energy and to glasshouse gases from fossil fuels. The invention describes innovative equipment which makes deep holes in geologi... | 12/27/2011 |
| 8002037 | Downhole cleaning tool and method of use A downhole cleaning tool comprising: a substantially cylindrical body; at least one cleaning member extending from the cylindrical body and being movable between a retracted position and an active position in which the cleaning member is positioned to clean an inter... | 08/23/2011 |
| 7950462 | Scale inhibitors compatible with sandstone acidizing Methods are given for making scale inhibitors, that were previously incompatible with fluids containing fluoride ion, compatible with fluids containing fluoride ion. Examples of such scale inhibitors include phosphonates and phosphino-polycarboxylates. The method is... | 05/31/2011 |
| 7913763 | Washing a cylindrical cavity A tool (2) for washing a wellbore or hollow tubular has a longitudinal axis and comprises one or more elongate nozzles (7) for ejecting fluid generally radially from the tool. The or each nozzle extends circumferentially around the tool so as to provid... | 03/29/2011 |
| 7905291 | Borehole cleaning using downhole pumps An apparatus for borehole cleaning comprises a tubular conveyance extending from the surface into a borehole to a region to be cleaned, a motor mounted at the end of the tubular conveyance that in use is introduced into the borehole, a pump connected to the motor an... | 03/15/2011 |
| 7874366 | Providing a cleaning tool having a coiled tubing and an electrical pump assembly for cleaning a well To perform a cleanout operation in a wellbore, a cleaning tool having a coiled tubing and an electrical pump assembly is run into the wellbore. The electrical pump assembly that is located in the wellbore is activated. In response to fluid flow generated by the elec... | 01/25/2011 |
| 7857058 | Downhole swivel joint assembly and method of using said swivel joint assembly A downhole swivel joint assembly comprising an upper component and a lower component. The components may assume either of two stable positions relative to each other, namely an unactivated configuration in which the components are rotationally fast with each other b... | 12/28/2010 |
| 7854263 | Surfactant package for well treatment and method for using same A surfactant blend for servicing wells includes a first non-ionic surfactant having a hydrophilic-lipophilic balance of between about 10 and about 15; a second non-ionic surfactant having a hydrophilic-lipophilic balance of between about 2 and about 6; and an anioni... | 12/21/2010 |
| 7836955 | Wireline bailing system for removing large volumes of liquid from a borehole An electrical wireline conveyed baling system for removing large volumes of liquids from a well borehole with a single trip of a bailer tool string. The system also utilizes one or more blow out preventers thereby allowing wireline bailing operations to be carried o... | 11/23/2010 |
| 7770648 | Completion method for well cleanup and zone isolation A completion method isolates a lower zone while circulation at high rates takes place above to clean debris out of the wellbore. Pressure fluctuation sensitive equipment in a lower completion is isolated with a tubing valve during circulation. This further prevents ... | 08/10/2010 |
| 7753124 | Autonomous magnetic sleeve for a riser An autonomous magnetic sleeve for a riser is provided. The sleeve is constructed and arranged to be independently lowered and seated above a subsea tree section. The autonomous magnetic sleeve includes a cylindrical structure having an inner diameter larger than a d... | 07/13/2010 |
| 7740073 | Wellhead seal unit A wellhead seal unit for sealing a subsea oil and/or gas well at the wellhead. The unit comprises a sleeve, sealingly engaged to the workstring and to which, blow out preventer rams can engage. The unit allows the workstring to be rotated and reciprocated within the... | 06/22/2010 |
| 7690431 | Methods for controlling migration of particulates in a subterranean formation Methods comprising: providing a subterranean formation penetrated by a well bore wherein the well bore comprises perforated casing that comprises a plurality of perforations, providing an acidic treatment fluid comprising an aqueous base fluid and an acid compositio... | 04/06/2010 |
| 7673688 | Casing wiping dart with filtering layer A dart may include a foam body, a filtering material at least partially covering the foam body, and a mandrel. The foam body may surround the mandrel. ... | 03/09/2010 |
| 7624806 | Pipe cleaning tool and method A method of cleaning a pipe provides a tool within the pipe. The tool has a body of smaller diameter than the pipe such that the body and pipe define an annulus and a fluid guiding member located at the annulus and movable relative to the pipe. The fluid guiding mem... | 12/01/2009 |
| 7559374 | Dual function cleaning tool A cleaning tool and method of cleaning a liner top in a well bore. The tool includes cleaning elements, typically scrapers, which are arranged eccentrically to an axial bore through the tool. The elements are biased outwardly to contact an inner surface of a polishe... | 07/14/2009 |
| 7546878 | Chemical deployment canisters for downhole use An apparatus for deployment of a reagent downhole includes a housing configured to move in a borehole; a chamber for storing the reagent, wherein the chamber is disposed in the housing and has one or more outlets for dispensing the reagent; a piston configured to mo... | 06/16/2009 |
| 7533726 | Method of increasing gas well production A method of increasing the production of a formation gas from a well bore penetrating a gas producing formation wherein the formation gas has a water content that results in the formation of condensate water from the formation gas as the formation gas passes up the ... | 05/19/2009 |
| 7527103 | Procedures and compositions for reservoir protection A flow conduit having at least one orifice is placed in the vicinity of a flow source, which in one non-limiting embodiment may be a hydrocarbon reservoir. The flow pathway between the orifice and the source is temporarily blocked with a degradable barrier. Once the... | 05/05/2009 |
| 7409995 | Apparatus and method for washing tubular conduits during trip out of a conduit string from within a subterranean well An apparatus for washing undesirable matter off of the exterior of tubular conduits forming a conduit string during trip out of the conduit string within a subterranean well. The tubular conduits may be drill or workover pipe, or the like. A cylindrical housing has ... | 08/12/2008 |
| 7395865 | Gas lift plunger arrangement A plunger in a plunger lift system in an oil and gas well includes shaped grooves spaced along the plunger body, angled fins or below the grooves, an elongated interior cavity open at the bottom, and passages connecting the interior cavity to the grooves. The shape,... | 07/08/2008 |
| 7380597 | Deployment of underground sensors A method of installing a sensor located in a chamber on the out-side of a casing, comprising the steps of positioning the casing in a well, cementing the casing in position, positioning a drilling tool inside the casing level with the chamber, drilling through the c... | 06/03/2008 |
| 7377283 | Coiled tubing wellbore cleanout A method and apparatus for substantially cleaning fill from a borehole is described variously including running a coiled tubing assembly into the wellbore, creating a fluid vortex by circulating cleaning fluid through the coiled tubing, and pulling the coiled tubing... | 05/27/2008 |
| 7371289 | Cleaning and doping of tubulars Apparatus for cleaning and doping a pin 2 of a tubular 3 during the making or breaking of a string on a well platform. The apparatus comprises a housing 4 having first and second conosed ends 6,7 and arranged in used to be secured at its ... | 05/13/2008 |
| 7353873 | Magnetic assemblies for deposit prevention and methods of use An apparatus and method for controlling and/or minimizing the formation or accumulation of unwanted deposits on the inside of fluid flow paths by employing at various locations along the path an assembly of permanent magnets oriented such that the fluid flow is pref... | 04/08/2008 |
| 7350572 | Methods for controlling fluid loss A method of treatment of subterranean formations in which leakoff through natural fractures is controlled through the use of fibers. The method involves pumping a mixture of a formation treatment fluid and a fiber into the formation for matrix stimulation, fracture ... | 04/01/2008 |
| 7350590 | Instrumentation for a downhole deployment valve The present generally relates to apparatus and methods for instrumentation associated with a downhole deployment valve or a separate instrumentation sub. In one aspect, a DDV in a casing string is closed in order to isolate an upper section of a wellbore from a lowe... | 04/01/2008 |
| 7350597 | Drilling system and method A drilling system for drilling a bore hole into an earth formation, the bore hole having an inside wall. A drill string reaches into the bore hole from a surface, leaving a drilling fluid return passage between the drill string and the bore hole inside wall. A botto... | 04/01/2008 |
| 7347259 | Downhole oilfield erosion protection by using diamond A device for use with components for a downhole tool—such as a throat, a nozzle, or a diffuser—used for cleaning a wellbore, are disclosed which decreases the erosion of the components. The device may be comprised of a hardened material, such as stack of pure di... | 03/25/2008 |
| 7347274 | Annular barrier tool The present invention provides for an annular barrier tool to block or restrict the flow of well fluids in the annular region of a well. ... | 03/25/2008 |
| 7347261 | Magnetic locator systems and methods of use at a well site Magnetic locator systems and methods of using same at a wellhead are described. The magnetic locator systems include a magnetic field generator on an oilfield tool component, such as a deployment bar, adapted to be moved through an oilfield pressure control componen... | 03/25/2008 |
| 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 |
| 7337845 | Well maintenance equipment and procedure The present invention relates to a method of removing deposits from various types of wells (17) including environmental recovery, water supply, horizontal, barrier, injection, recharge, and/or disposal wells (17). The method includes equipping a well (... | 03/04/2008 |
| 7331388 | Horizontal single trip system with rotating jetting tool A method for completing a well in a single trip is described, which includes inserting a completion tool assembly into the wellbore. The completion tool assembly includes a gravel packing assembly having a central channel substantially therethrough and a service too... | 02/19/2008 |
| 7322418 | Continuous circulation drilling method A method for drilling wells in which the tubular can be added or removed from the drill string whilst mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet and outlet for ... | 01/29/2008 |
| 7322419 | Circulating sub and method A control sub for use with a hydraulically operated downhole tool. In an embodiment, the sub comprises an outer sleeve connected to a work string and an inner sleeve slidably engaged to the outer sleeve by matching hex profiles, connected to the downhole tool. Radia... | 01/29/2008 |