Abstract:
A method of producing fluids from a subterranean formation (10) through a single well (1) in a network of separate well-bores, comprising the steps of forming a well (1) having a horizontal section (3) located within the formation (10), completing and equipping such well (1) to produce fluids from the formation (10), producing fluids from the formation through such well (1); forming at least one additional well (2) having a horizontal section (4) located within the formation (10) such that such well (3) is in fluid communication with the first well (1), without intersecting with the horizontal section (3) of the first well (1), and using such additional well (2) as a conduit within the formation to allow and cause fluids contained in the formation which drain or flow into the horizontal section (4) of such additional well-bore, to flow to and be produced through the first well-bore (1).
Abstract:
In a process for the separation of unsaturated hydrocarbons from mixtures containing them, the feed is led through a microporous hollow fibre membrane, while an aqueous solution of a complexing agent flows at the other side of the membrane. The unsaturated hydrocarbon forms a reversible water-soluble complex. After separation of the complex, the latter is led along a second membrane under conditions which lead to the dissociation of the complex.
Abstract:
A catalyst system suitable for the isomerization of a xylene and conversion of ethylbenzene in a feed containing xylene and ethylbenzene comprising a first catalyst having activity for the conversion of ethylbenzene, a second catalyst having hydrogenation activity and a third catalyst having activity for the isomerization of a xylene where the second catalyst is located in the system between the first and third catalysts relative to a flow of feed material through the catalyst system.
Abstract:
An extruded polyester fiber comprising aromatic ester units of a t least terephthalate and 2,6-naphthalate where the 2,6-naphthalate units comprise about 10 mole percent to about 90 mole percent of the total aromatic ester units in the polyester.
Abstract:
The liquid product of an alkylation process is at least partially vaporised, at least a part of the vapour phase is condensed and optionally, the liquid condensate is flashed. The liquid phase resulting from one or both condensations is recycled to the reactor.
Abstract:
A ruthenium-based metathesis catalyst system which contains a ruthenium compound (A), a phosphorus compound (B), and a compound (C) containing a carbon-to-carbon triple bond. The mole ratio of compounds A:B:C is typically in the range of about 1.0:0.01-100:0.01-100. The ruthenium compound (A) is a Ru(II), Ru(III), or Ru(IV) compound containing an anionic ligand (X) and optionally an arene ligand and optionally a phosphorus compound ligand. The phosphorus compound (B) is optional if the ruthenium compound (A) contains a phosphorus-containing ligand.
Abstract:
Oxygen-scavenging compositions comprising an oxidizable metal component, an electrolyte component and a solid, non-electrolytic, acidifying component and, optionally, a water-absorbant binder and/or a polymeric resin exhibit good oxygen-scavenging performance with improved oxidation efficiency relative to compositions containing oxidizable metal component and either an electrolyte or acidifying component but not both. The compositions can be used as an oxygen absorbent in packets or in combination with thermoplastic resins melt-fabricated into a wide variety of oxygen-scavenging packaging articles.
Abstract:
An integrated process of vent gas treatment for abatement of carbon monoxide and volatile organic compound emissions from a chemical process plant is provided, and includes provisions for catalytic oxidation of organic pollutants with dioxygen in a vent gas stream over a solid oxidation catalyst (44), means for supplying an amount of combustible fluid (31) into the vent gas stream upstream of the oxidation to facilitate catalytic oxidation of the organic pollutants; and means for controlling the amount of combustible fluid being supplied by the supplying means, the controlling means being arranged to provide sufficient reactants for the catalytic oxidation to maintain suitable reaction temperatures in accordance with the present invention.
Abstract:
A large-area semiconductor laser diode in an extended laser cavity is locked by a passive optical coupling to a passive resonator for frequency and amplitude stable buildup of an intracavity field in the passive resonator. The large-area laser diode may be a broad-area diode, a phased array, or a tapered amplifier. The extended laser cavity may be a linear cavity, or a ring cavity in either a double-pass or a single-pass configuration. Spatial beam cleanup and passive locking are simultaneously achieved. The concentrated power in the passive resonator is useful for accomplishing second harmonic generation, frequency summing and the like at high levels of efficiency and at low noise levels resulting from the frequency and amplitude stability within the passive resonator.