Circulating fluid

As of this writing, it has not been possible to use the seismic data which defines the volume of the reservoir to also determine the joint stmcture. Extended flow testing is the most direct measure of the efficiency and sustainabiUty of energy recovery from the reservoir. The use of chemical tracers in the circulating fluid can also provide valuable supporting data with regard to the multiplicity of flow paths and the transit time of fluid within the reservoir (37). 

The overall circulating pattern, including the circulation time and the deviation of the circulation times, can never be neglected. No matter what else a mixer does, it must be able to circulate fluid throughout an entire vessel appropriately. If it cannot, then that mixer is not suited for the task being considered. 

Squires, A. M. (1986). The Story of Fluid Catalytic Cracking The First Circulating Fluid Bed. Proceedings of the First International Conference on Circulating Fluid Beds, November 18-2U, 1985. New York Pergamon Press. 

In the completion and workover operations, there are long periods when fluid in the hole is not circulated. Fluid suspension and thermal stability should be determined in order to evaluate the necessary circulation frequency. 

Rubber Sleeve Core Barrels. Rubber sleeve core barrels are special application tools designed to recover undisturbed core in soft, unconsolidated formations. As the core is cut, it is encased in the rubber sleeve that contains and supports it. Using face discharge ports in the bit, the contamination of the core by circulating fluid is reduced. The rubber sleeve core barrel has proven to be a very effective tool, in spite of the fact that the rubber sleeve becomes weak with a tendency to split as the temperature increases about 175°F. 

A blowout, which is the continuous flow of oil or gas to the surface through the annulus, is the result of a lack of sufficient bottomhole pressure from the column of circulating fluid and proper well head equipment. 

The process is centred around two separate circulating fluid bed (CEB) reactors. They both operate at atmospheric pressure ... 

Regulation of water balance through the effects of blood on the exchange of water between the circulating fluid and the tissue fluid... 

There are a number of methods that have been proposed to help prevent the loss of circulation fluid [1214]. Some of these methods use fibrous, flaky, or granular material to plug the pores as the particulate material settles out of the slurry. Examples are oat hulls [855], rice products [294,295], waste olive pulp [519], nut cork [654,1532], pulp residue waste [750], petroleum coke [1840], and shredded cellophane [296]. 

Stopping intolerable loss of circulation fluid during drilling operations... 

For the local process especially the borehole resistance is important. The borehole resistance depends mainly on the loop type and material, loop dimensions, circulation fluid properties, temperature of the process, borehole engineering (Hellstrom, 1991). Furthermore the far field temperature in the ground and geothermal gradient needs to be measured. 

The whole of a multi-cellular organism is contained by outer cell layers, which are described in biology texts, and maintained by connective tissue. Connective tissue is a novel, external biopolymer structure of multi-cellular organisms found within their new extracellular, circulating fluid compartments (see Section 8.9). As mentioned there, the main connective tissues, covalently cross-linked structures, are (1) those of plants, celluloses (polysaccharides), often cross-linked by lignin (2) those of lower animals and insects, mixed cross-linked polysaccharides and... 

Multi-cell Eukaryotes Circulating fluids outside cells Sugars outside cells... 

Reh, L., Calcining Aluminum Trihydrate in a Circulating Fluid Bed, a New Technique of High Thermal Efficiency, Metallurges, Rev. Activ., 1972(15) 58-60 (1972)... 

Reh, L., The Circulating Fluid Bed Reactor—A Key to Efficient Gas-Solid Processing, Proc. First Intern. Conf. Circulating Fluidized Bed, p. 105-118, Halifax, Canada (1985)... 

Holtkamp, W. C. A., Kelly, F. T., and Shingles, T. 1977. Circulating fluid bed catalytic reactor for the Fischer-Tropsch synthesis at Sasol II. ChemSA, March, pp. 44—45. 

CFB (2) [Circulating fluid bed] A metallurgical roasting process, developed originally for the aluminum industry and now used for many other nonferrous ores. Offered by Lurgi. 

BECON Iowa Shelled corn State (Biomass Energy Conservation Facility) Circulating Fluid Bed LHV IGCC 5 14.7... 

The fuel cell coolant system uses a liquid fluorinated hydrocarbon and transfers the waste heat from the cell stack through the fuel cell heat exchanger of the fuel cell power plant to the Freon-21 coolant loop system in the midfuselage. Internal control of the circulating fluid keeps the cell stack at an operating temperature of approximately 200°F. 

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