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pro vyhledávání: '"Stuart Holt"'
Publikováno v:
All Days.
Viscoelastic surfactants (VES) have been widely used in acidizing and acid fracturing. They are used as diversion agents during matrix acid treatments and leakoff control agents during acid fracturing. At high temperatures, viscoelastic surfactants h
Publikováno v:
All Days.
The main objective of well stimulation has been to create wormholes or fractures in order to bypass the damaged zone and enhance the permeability in the near-wellbore area. Regular HCl was the main stimulation fluid. However, at high temperatures, bo
Publikováno v:
All Days.
Diverting agents have been widely used during matrix acidizing treatments to accomplish the uniform distribution of acid solutions across the target zones. One of the most popular formulas is based on viscoelastic surfactants (VES) which showed good
Publikováno v:
All Days.
Acid treatments in high temperature deep wells drilled in carbonate reservoirs represent a challenge to the oil industry. The high temperature of deep wells requires a special formulation of emulsified acid that can be stable and effective at such hi
Publikováno v:
All Days.
A good surfactant-based acid should have the following properties: thermal stability, compatibility with cations, low viscosity in live acids but high viscosity in spent acids, ease to be removed by internal or external breakers, and no harm to the e
Publikováno v:
All Days.
Environmental legislation has significantly reduced the variety of scale inhibitor chemistries that can be used to prevent inorganic scale formation during the production and separation of crude oil from produced water. Poor ecotoxicity has severely
Publikováno v:
Quantum-Atom Optics Downunder.
Dynamical tunneling is analogous to the more familiar tunneling of regular single particles between two wells, but takes place between two period-one islands in a semi-chaotic classical phase space. We study the dynamical tunneling of a BEC in a modu
Autor:
Stuart Holt, Matthew J. Davis, Tom Campey, Adrian Ratnapala, Norman R. Heckenberg, Benjamin Upcroft, Chris J. Vale, Halina Rubinsztein-Dunlop
Publikováno v:
SPIE Proceedings.
We describe the production of BECs on a new type of atom chip based on silver foil. Our atom chip is fabricated with thick wires capable of carrying currents of several amperes without overheating. The silver surface is highly reflective to light res