Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8053396 | Surfactant mixtures for tertiary oil recovery Use of a mixture comprising a surfactant and a cosurfactant in the form of an aqueous solution for flooding underground deposits of hydrocarbons for mobilizing and recovering the hydrocarbons from the underground deposits, the cosurfactant being a substance or a gro... | 11/08/2011 |
| 7700525 | Orthoester-based surfactants and associated methods Provided are treatment fluids that comprise a base fluid and an orthoester-based surfactant. In some instances, the treatment fluid may have a pH of about 8.5 or greater. Also provided are emulsified treatment fluids that comprise an oleaginous phase, an aqueous pha... | 04/20/2010 |
| 7435706 | Thinners for invert emulsions A method of reducing the viscosity of oil-based drilling fluids and well service fluids at low temperatures and a thinner compound for use in such drilling fluids and well service fluids is disclosed. The method comprises adding to said drilling fluids or well servi... | 10/14/2008 |
| 7381689 | Methods for inhibiting hydrate blockage in oil and gas pipelines using amide compounds A method and an amide composition used therein for inhibiting, retarding, mitigating, reducing, controlling and/or delaying formation of hydrocarbon hydrates or agglomerates of hydrates. The method may be applied to prevent or reduce or mitigate plugging of conduits... | 06/03/2008 |
| 7354886 | Pumpable multiple phase compositions for controlled release applications downhole Pumpable multiple phase vesicle compositions carry agents and components downhole or through a conduit, and controllably releasing them at a different place and time by breaking the compositions. In one non-limiting embodiment the pumpable multiple phase vesicles ha... | 04/08/2008 |
| 7345010 | Compositions for drilling fluids useful to provide flat temperature rheology to such fluids over a wide temperature range and drilling fluids containing such compositions The invention is of oil-based drilling fluids including invert emulsion fluids that are able to maintain a relatively consistent rheological profile over a wide temperature range. The invention also includes new additives that enable the preparation of drilling flui... | 03/18/2008 |
| 7268100 | Shale inhibition additive for oil/gas down hole fluids and methods for making and using same An under-balanced drilling fluid additive is disclosed which reduces reactive shale and/or clay swelling during under-balanced drilling operations, where the additive includes an effective amount of a choline salt. A method for under-balanced drilling is also disclo... | 09/11/2007 |
| 7250390 | High performance water based drilling fluids and method of use A water-base fluid for use in drilling wells and other drilling operation includes a shale clay which swells in the presence of water. The fluid preferably includes: an aqueous based continuous phase, and a shale hydration inhibition agent having the formula: | 07/31/2007 |
| 7238646 | Invertible well bore servicing fluid A method for using an invert emulsion fluid in a well bore, comprising placing an invert emulsion fluid in a well bore, wherein the invert emulsion fluid comprises an oleaginous fluid, a non-oleaginous fluid and an emulsifier comprising one or more amines generally ... | 07/03/2007 |
| 7205263 | Recyclable foamed fracturing fluids and methods of using the same Fracturing fluids and methods of fracturing a subterranean formation using such fluids are provided. A fracturing fluid having a first pH is foamed by introducing a gas to the fluid. The fracturing fluid comprises a surfactant that facilitates formation of the foam ... | 04/17/2007 |
| 7183240 | Additives for inhibiting the formation of gas hydrates The present invention relates to an additive, and its use for inhibiting nucleation, growth and agglomeration of gas hydrates by adding an effective amount of an inhibitor to a multiphasic mixture which tends to hydrate formation and consists of water, gas and optio... | 02/27/2007 |
| 7151076 | Low residue well treatment fluids and methods of use A low residue well treatment fluid comprises: an aqueous solvent; a gelling agent comprising one or more modified polysaccharides, the modified polysaccharides having hydrophilic groups; and a crosslinking composition. The fluid may optionally further comprise a gel... | 12/19/2006 |
| 7140433 | Diamine terminated primary amine-aldehyde sulfur converting compositions and methods for making and using same A new class of sulfur scavenging or converting compositions is disclosed comprising diamine terminated, amine-aldehyde adducts, where the adducts are substantially bimolecular amine-aldehyde adducts and the composition is substantially free of trimer and/or triazine... | 11/28/2006 |
| 7125826 | Methods of using invertible oil external-water internal fluids in subterranean applications Methods of using invertible oil external-water internal emulsions in drilling, hydraulic fracturing, gravel packing and completion and then inverting the emulsion to a water external-oil internal emulsion are provided. The methods basically comprise the steps of con... | 10/24/2006 |
| 7084092 | Shale hydration inhibition agent and method of use A water-base fluid for use in drilling, cementing, workover, fracturing and abandonment of subterranean wells through a formation containing a shale which swells in the presence of water. In one illustrative embodiment, the drilling fluid includes, an aqueous based ... | 08/01/2006 |
| 7073588 | Esterquat acidic subterranean treatment fluids and methods of using esterquats acidic subterranean treatment fluids The present invention relates to acidic treatment fluids that comprise an acid fluid and an ester-containing quaternary ammonium compound (“esterquat”) and methods of their use. One embodiment of the present invention provides a method of inhibiting metal corros... | 07/11/2006 |
| 7067459 | Well stimulation compositions A well service fluid composition comprises a fracturing fluid and a gas hydrate inhibitor. Preferably, the gas hydrate inhibitor does not affect the function of the fracturing fluid and is present in an amount sufficient to control and/or minimize the formation of g... | 06/27/2006 |
| 7012043 | Drilling fluids Drilling fluid additives that act to control clay swelling in drilled formations without adversely effecting the properties of the drilling fluid. The drilling fluid additives preferably comprise a polyether amine, a polyether amine derivative, or mixtures thereof. ... | 03/14/2006 |
| 6989354 | Invertible well bore servicing fluid An invert emulsion fluid, method for making same, and method for using same as a servicing fluid in a well bore. The invert emulsion fluid contains an oleaginous fluid, a non-oleaginous fluid, and an emulsifier comprising one or more amines generally represented by ... | 01/24/2006 |
| 6972274 | Method of improving the permeability of an underground petroleum-containing formation The present invention generally relates to a method and a composition useful in restoring the permeability of a porous underground petroleum containing formation. Restoring permeability to the formation enhances the injectivity thereby accelerating petroleum recover... | 12/06/2005 |
| 6894007 | Additives for inhibiting gas hydrate formation The invention relates to the use of compounds of the formula (1) in which R1 is C1- to C24-alkyl, C2- to C24-alkenyl or a C6- to C18 | 05/17/2005 |
| 6867262 | Grafted polymers as gas hydrate inhibitors Graft polymers are used as gas hydrate inhibitors. ... | 03/15/2005 |
| 6831043 | High performance water based drilling mud and method of use A water-base fluid for use in drilling wells and other drilling operation includes a shale clay which swells in the presence of water. The fluid preferably includes: an aqueous based continuous phase, and a shale hydration inhibition agent having the formula: | 12/14/2004 |
| 6790811 | Oil based drilling fluid Invert emulsion compositions including an oleaginous, a non-oleaginous and an amine surfactant that are useful in the oil and gas well drilling art are disclosed. The amine surfactant is selected so that the invert emulsion can be converted form a water-in-oil type ... | 09/14/2004 |
| 6756345 | Well service composition and method A well service fluid composition comprises a fracturing fluid and a gas hydrate inhibitor. Preferably, the gas hydrate inhibitor does not affect the function of the fracturing fluid and is present in an amount sufficient to control and/or minimize the formation of g... | 06/29/2004 |
| 6609578 | Shale hydration inhibition agent and method of use A water-base fluid for use in drilling wells and other drilling operation includes a shale which swells in the presence of water. The fluid preferably includes: an aqueous based continuous phase, and a shale hydration inhibition agent having the formula: ... | 08/26/2003 |
| 6566309 | Additives for inhibiting gas hydrate formation The invention relates to the use of compounds of the formula (1) ##STR1## in which R1 is C1 -C30 -alkyl, C2 -C30 -alkenyl or a group of the formula --CH2 --CO--NR2 R3 or a ... | 05/20/2003 |
| 6564869 | Method and composition for cleaning and inhibiting solid, bitumin tar, and viscous fluid accretion in and on well equipment This disclosure relates to a method and composition for cleaning and inhibiting solid, bitumin tar, and viscous fluid deposition in well equipment used in conjunction with a water-based well fluid which includes mixing an effective amount of a miscible te... | 05/20/2003 |
| 6387137 | Hydrocarbon gels Liquid hydrocarbons are gelled by the introduction of a phosphate ester and a crosslinking agent. Gelling times and viscosities are improved through the use of an enhancer which is, preferably, an oxyalkylated amine or a blend of an oxyalkylated amine wit... | 05/14/2002 |
| 6342468 | Hydrocarbon gelling compositions useful in fracturing formations The invention relates to compositions and methods for gelling liquid hydrocarbons by the introduction of certain phosphate esters, a crosslinking agent, and an enhancer. The enhancer of the present invention is preferably an oxyalkylated amine or a blend ... | 01/29/2002 |
| 6331508 | Method for controlling gas hydrates in fluid mixtures A method for controlling the formation of gas hydrate crystals in a fluid mixture by admixing with said fluid mixture a polyoxyalkylenediamine in an amount effective to prevent and/or inhibit crystal growth.... | 12/18/2001 |
| 6297201 | Hydrocarbon gelling compositions useful in fracturing formation The invention relates to compositions and methods for gelling liquid hydrocarbons by the introduction of certain phosphate esters, a crosslinking agent, and an enhancer. The enhancer of the present invention is preferably an oxyalkylated amine or a blend ... | 10/02/2001 |
| 6227295 | High temperature hydraulic fracturing fluid A fluid that is useful in stimulation operations, and in particular, in hydraulic fracturing treatments, comprises a carrier fluid; a solvatable, crosslinkable polymer; a cross-linking agent that does not cause substantial cross-linking of the polymer at ... | 05/08/2001 |
| 6218342 | Oil-based drilling fluid Invert emulsion compositions including an oleaginous, a non-oleaginous and an amine surfactant that are useful in the oil and gas well drilling art are disclosed. The amine surfactant is selected so that the invert emulsion can be converted form a water-i... | 04/17/2001 |
| 6180699 | Blend for preventing or retarding the formation of gas hydrates A composition is provided herein for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit. The composition ... | 01/30/2001 |
| 6149693 | Hydrocarbon gels useful in formation fracturing Liquid hydrocarbons are gelled by the introduction of a phosphate ester and a crosslinking agent. Gelling times and viscosities are improved through the use of an enhancer which is, preferably, an oxyalkylated amine or a blend of an oxyalkylated amine wit... | 11/21/2000 |
| 5854180 | Environmentally improved acid corrosion inhibitor Corrosion is inhibited in hydrochloric acid solutions used to acidize wells, by adding to the solutions a corrosion inhibiting composition comprising cinnamaldehyde or a substituted cinnamaldehyde together with a reaction product of a C3-6 keto... | 12/29/1998 |
| 5773390 | Chemical additive for removing solids from a well drilling system A chemical additive for cleaning a well drilling system and equipment includes an alcohol, preferably a terpene, and either an ether amine or a base fluid or combination of the two. The additive can be mixed with an aqueous solution that may be a water, s... | 06/30/1998 |
| 5741758 | Method for controlling gas hydrates in fluid mixtures A method for controlling the formation of gas hydrate crystals in a fluid mixture by admixing with said fluid mixture a polyoxyalkylenediamine in an amount effective to prevent and/or inhibit crystal growth.... | 04/21/1998 |
| 5678631 | Process for removing solids from a well drilling system A process for cleaning a well system and equipment has been developed using a chemical additive that includes an alkene alcohol, preferably a terpene, and either an ether amine or base fluid or combination of the two. The additive can be used in an aqueou... | 10/21/1997 |
