| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507266000 | Organic component contains an alcohol group | 7 |
| 20090054274 | Formation of Heteroatom Containing Derivatives of Paraffins - A process by which alkyl halides may be reacted (coupled) with nucleophilic materials in the presence of a homogeneous catalyst system. The process comprises reacting (coupling) alkyl halides with a nucleophilic material in the presence of a homogeneous catalyst system to produce derivatives of alkyl halides, wherein the homogeneous catalyst system comprises at least one metal or metal compound which has the ability to form metal-halogen bonds. | 02-26-2009 |
| 20090131287 | Inhibiting hydration of shale using a polyol and potassium formate - A substantially nonaqueous composition comprising a polyol and potassium formate is made by removing water from a mixture while heating. The polyol beneficially contains 3-50 hydroxyl groups and may be polyglycerin. The water removed may originate from a solution of one or more of the ingredients, from a condensation reaction of hydroxyl groups, and/or from an esterification reaction of hydroxyl groups on the polyol(s) and the formate groups. The composition is effective for treating shale formations in well drilling to reduce hydration and sloughing of the shale. If, in the course of treating shale formations, the polyol/potassium formate composition mixes with connate or other water, the water may be removed on returning the composition to the surface, and recycled. | 05-21-2009 |
| 20090156436 | Spacer Fluid Additive - A spacer fluid comprises a fluid and a viscosity agent. The viscosity agent is a mixture of at least two polyvinylalcohol compositions. A first polyvinylalcohol composition comprises polyvinylalcohols having a first degree of hydrolysis and a second polyvinylalcohol composition comprises polyvinylalcohols having a second degree of hydrolysis. The first and second degrees of hydrolysis are substantially different such that the rheology of the spacer fluid is stable during temperatures changes. | 06-18-2009 |
| 20090221456 | Microemulsion cleaning composition - A cleaning composition including which comprises a surfactant and a propionate as co-surfactant and/or co-solvent. The composition can be used, for example, to clean drilling mud containing oils. | 09-03-2009 |
| 20100173806 | EXTRACTION OF HYDROCARBONS FROM HYDROCARBON-CONTAINING MATERIALS - A method of extracting hydrocarbon-containing organic matter from a hydrocarbon-containing material includes the steps of providing a first liquid comprising a turpentine liquid; contacting the hydrocarbon-containing material with the turpentine liquid to form an extraction mixture; extracting the hydrocarbon material into the turpentine liquid; and separating the extracted hydrocarbon material from a residual material not extracted. | 07-08-2010 |
| 20100197531 | Use of Oil-Soluble Surfactants as Breaker Enhancers for VES-Gelled Fluids - Fluids viscosified with viscoelastic surfactants (VESs) may have their viscosities reduced (gels broken) by the direct or indirect action of an internal breaker composition that contains at least one mineral oil, at least one polyalphaolefin oil, at least one saturated fatty acid and/or at least one unsaturated fatty acid. The internal breaker may initially be dispersed oil droplets in an internal, discontinuous phase of the fluid. In one non-limiting embodiment, the internal breaker, e.g. mineral oil, is added to the fluid after it has been substantially gelled. An oil-soluble surfactant is present to enhance or accelerate the reduction of viscosity of the gelled aqueous fluid. | 08-05-2010 |
| 20120283155 | Controlling Coal Fines in Coal Bed Operations - The migration of coal fines within a bed is reduced, inhibited or constrained by contacting the fines with nanoparticles, such as magnesium oxide crystals having an average particle size of about 30 nm. These nanoparticles may coat a proppant during the fracturing of a subterranean formation to produce methane from a coal bed therein. The nanoparticles may also treat a proppant pack in a fractured coal bed. The nanoparticles cause the coal fines to thus bind to or associate with the proppants. Thus, most of the coal fines entering fractures away from the near-wellbore region will be restrained or controlled near their origin or source and the production of methane at a desired level will be maintained much longer than a similar situation than where the nanoparticles are not used. | 11-08-2012 |
