Abstract:
Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, stimulation fluids, and well clean-up fluids.
Abstract:
A low dielectric constant material has a first backbone with an aromatic moiety and a first reactive group, and a second backbone with an aromatic moiety and a second reactive group, wherein the first and second backbones are crosslinked via the first and second reactive groups in a crosslinking reaction without an additional crosslinker, and wherein a cage structure having at least 10 atoms is covalently bound to at least one of the first and second backbone.
Abstract:
Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, stimulation fluids, and well clean-up fluids.
Abstract:
This invention provides novel nanofibers and nanofiber structures which posses adherent properties, as well as the use of such nanofibers and nanofiber comprising structures in the coupling and/or joining together of articles or materials.
Abstract:
A novel metal oxide nanotube made only of a metal oxide is produced by the use of a helical fiber (Japanese Patent Application No. 2001-239014). The metal oxide nanotube has a pore diameter distribution having two peak pore diameters in the ranges of 1-2 nm and 3-7 nm respectively, constitutes a double helix, takes the form of a hollow cylinder, and is made only of a metal oxide which may contain hydroxyl groups. The nanotube can be produced by a process comprising the step of dissolving a compound (1) represented by the general formula (1) and a compound (2) represented by the general formula (2): (1) (2) [wherein A and B may be the same or different from each other and are each a sugar residue; R is alkyl; and R is hydrogen or alkyl] in water or a mixture of water and alcohol and allowing the resulting solution to stand; the step of adding a precursor of a metal oxide to the solution; the step of adding a catalyst for converting the precursor into a metal oxide; and the step of firing the gel formed in the preceding step. The nanotube exhibits an extremely high hydrogen occlusion capacity.
Abstract:
Filter arrangements include a barrier media in the form of fluted media treated with a deposit of fine fibers. The media is particularly advantageous in high temperature (greater than 140 to 240 DEG F) systems. Such systems may include engine systems, gas turbine systems, and fuel cell systems. Filter arrangements may take the form of media packs having a circular cross-section or a racetrack shaped cross-section, or media packs formed in a panel configuration.
Abstract:
The invention relates to a process for the production of paper or board comprising: adding a retention system to a stream of stock entering a paper machine head box, directing the stream of stock to a wire, de watering the stream of stock on the wire to form a paper web, and drying the paper web, wherein the retention system comprises a water-soluble cationic polymer, and nanocellulose acting like a micro particle, wherein the nanocellulose is added in an amount of less than 1% as active substance based on dry solids weight of the stock.
Abstract:
A neutron generator includes an ion source disposed in a pressurized environment containing an ionizable gas. The ion source includes a substrate with a bundle of carbon nanotubes extending therefrom. The ends of the nanotubes are spaced from a grid. Ion source voltage supply circuitry supplies a positive voltage potential between the substrate and the grid of the ion source to cause ionization of the ionizable gas and emission of ions through the grid. An ion accelerator section is disposed between the ion source and a target. The ion accelerator section accelerates ions that pass through the grid towards the target such that collisions of the ions with the target cause the target to generate and emit neutrons therefrom. The ion source, accelerator section and target are housed in a sealed tube and preferably the carbon nanotubes of the bundle are highly ordered with at least 106 carbon nanotubes per cm2 that extend in a direction substantially parallel to the central axis of the tube. The neutron generator provides gas ionization at much higher atomic to molecular ratio that the prior art, which allows for small compact size designs suitable for logging tools that are used in space-constrained downhole environments.
Abstract:
Filter arrangements include a barrier media in the form of fluted media treated with a deposit of fine fibers. The media is particularly advantageous in high temperature (greater than 140 to 240 DEG F) systems. Such systems may include engine systems, gas turbine systems, and fuel cell systems. Filter arrangements may take the form of media packs having a circular cross-section or a racetrack shaped cross-section, or media packs formed in a panel configuration.
Abstract:
A concentrate package-mix composition comprising a water-soluble pesticide or plant growth regulator, for example a salt of the herbicide glyphosate, and a solid water-insoluble pesticide or plant growth regulator, for example the herbicide flumioxazin, is provided. The water-soluble pesticide or plant growth regulator is dissolved in a continuous aqueous phase of the composition and solid particles of the water-insoluble pesticide or plant growth regulator are suspended in the aqueous phase. These solid particles, individually or plurally, are intimately surrounded by a barrier layer, which comprises either one or both of a water-immiscible organic solvent or an emulsifying agent that has a hydrophile-lipophile balance (HLB) not greater than about 15. Optionally the composition further comprises a viscosity modifying agent, such as colloidal hydrophilic silica, dispersed in the aqueous phase. Compositions of the invention exhibit enhanced resistance to settling of the solid particles and/or enhanced resistance to chemical degradation of the water-insoluble pesticide or plant growth regulator by comparison with otherwise similar compositions lacking the barrier layer or the organic solvent.