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Cnpc Usa Corp patents


Recent patent applications related to Cnpc Usa Corp. Cnpc Usa Corp is listed as an Agent/Assignee. Note: Cnpc Usa Corp may have other listings under different names/spellings. We're not affiliated with Cnpc Usa Corp, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "C" | Cnpc Usa Corp-related inventors


Millable bridge plug system

A millable bridge plug system includes a mandrel having an upper portion and a lower portion with an interlock, a shearing member attached at the upper portion, a sealing member, ring members, cone assemblies, slip devices, and an interlocking drill member at a lower portion of the mandrel. The interlock of the mandrel and the interlocking drill member are modular so that one bridge plug interchangeably connects to another bridge plug. ... Cnpc Usa Corp

Millable bridge plug system

A millable bridge plug system includes a mandrel, an upper cap end, a sealing member, ring members, cone assemblies, slip devices and a lower cap end. The sealing member, ring members, cone assemblies and slip devices are positioned on and around the mandrel. ... Cnpc Usa Corp

High density and high temperature emulsifier for use in an oil based drilling fluid system

An emulsifying composition for an oil based drilling fluid includes oleyl alcohol and a mixture of polymeric amides. The polymeric amides can be 1,3-dihydroxypropan-2-yl (e)-12-hydroxyoctadec-9-enoate, (9e,9′ e)-n,n′-(azanediylbis(ethane-2,1-diyl))bis(12-hydroxyoctadec-9-enamide, (e)-12-hydroxy-n,n-bis(2-((e)-12-hydroxyoctadec-9-enamido(ethyl)octadec-9-enamide, (z)-4-(bis(2-((e)-12-hydroxyoctadec-9-enamido)ethy)amino)-4-oxobut-2-enoic acid, 1,3-dihydroxypropan-2-yl(z)-4-(bis(2-((e)-12-hydroxyoctadec-9-enamido)ethy)amino)-4-oxobut-2-enoate, and n1,n1,n4,n4-tetrakis(2-((e)-12-hydroxyoctadec-9-enamido)ethyl)maleamide. ... Cnpc Usa Corp

Surface fluorinated elastomers for oilfield tools

Surface fluorination treatment of elastomers provides an oil-resistant, mechanically robust, and cost-effective elastomer for use as seals, o-rings, and plugs for oilfield tools. The fluorination treatment of the elastomers provides resistance to oil swelling.. ... Cnpc Usa Corp

Dissolvable composite slips and methods of manufacturing same

A dissolvable composite slip can include at least in part a dissolvable material. A dissolvable composite slip can include at least in part a non-dissolvable metallic material. ... Cnpc Usa Corp

Multi-sectional swellable packer

A multi-sectional swellable packer for a wellbore has a mandrel and multiple packer elements mounted on the mandrel. The packer elements are formed of swellable materials that swell when contacted with a swelling fluid. ... Cnpc Usa Corp

Short millable plug for hydraulic fracturing operations

A short millable plug includes a mandrel, an upper backup ring and a lower backup ring, a cone, a slip that can be expand and engage a casing, a plurality of sealing elements that creates a seal between the mandrel and the casing, a centralizer that can radially expand to force against the casing wall, a mill-out anti-rotation feature at the middle of the mandrel which is exposed once the plug is set. The centralizer can keep the plug in the center of the casing and each individual slip segments of the slip has the same distance to the casing wall during setting and operation. ... Cnpc Usa Corp

Polymer system for fluid loss control

A combination of three polymers including a crosslinked acrylamide-tbas copolymers in inverse emulsion form, n-vinyl pyrrolidone-acrylamide-tbas terpolymer, and crosslinked n-vinyl pyrrolidone-acrylamide-tbas acts as high temperature, high pressure fluid loss control additives for water-based drilling fluids systems. The combination is particularly useful for high salt, high density drilling fluids, and high temperature applications.. ... Cnpc Usa Corp

Method for a fracturing fluid system at high temperatures

The method for well-stimulation through a wellbore in a rock formation is hydraulic fracturing under high temperature conditions. The method includes injecting a fracturing fluid system to the rock formation; fracturing the rock formation at a temperature between 150-260 degrees celsius; and recovering fluid components of the fracturing fluid system from the wellbore and setting the proppant in the fractures. ... Cnpc Usa Corp

High density and high temperature emulsifier for use in an oil based drilling fluid system

An emulsifying composition for an oil based drilling fluid includes oleyl alcohol and a mixture of polymeric amides. The polymeric amides can be 1,3-dihydroxypropan-2-yl (e)-12-hydroxyoctadec-9-enoate, (9e,9′e)-n,n′-(azanediylbis(ethane-2,1-diyl))bis(12-hydroxyoctadec-9-enamide, (e)-12-hydroxy-n,n-bis(2-((e)-12-hydroxyoctadec-9-enamido(ethyl)octadec-9-enamide, (z)-4-(bis(2-((e)-12-hydroxyoctadec-9-enamido)ethy)amino)-4-oxobut-2-enoic acid, 1,3-dihydroxypropan-2-yl(z)-4-(bis(2-((e)-12-hydroxyoctadec-9-enamido)ethy)amino)-4-oxobut-2-enoate, and n1,n1,n4,n4-tetrakis(2-((e)-12-hydroxyoctadec-9-enamido)ethyl)maleamide. ... Cnpc Usa Corp

Convex ridge type non-planar cutting tooth and diamond drill bit

The present invention provides a convex ridge type non-planar cutting tooth and a diamond drill bit, the convex ridge type non-planar cutting tooth comprises a cylindrical body, the surface of the end portion of the cylindrical body is provided with a main cutting convex ridge and two non-cutting convex ridges, the inner end of the main cutting convex ridge and the inner ends of the two non-cutting convex ridges converge at the surface of the end portion of the cylindrical body, the outer end of the main cutting convex ridge and the outer ends of the two non-cutting convex ridges extend to the outer edge of the surface of the end portion of the cylindrical body, the surfaces of the end portion of the cylindrical body on both sides of the main cutting convex ridge are cutting bevels. The convex ridge type non-planar cutting tooth and the diamond drill bit have great ability of impact resistance and balling resistance. ... Cnpc Usa Corp








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