By Wilson C. Chin PhD
Computational Rheology for Pipeline and Annular Flow develops and applies smooth analytical and computational finite distinction equipment for fixing movement difficulties in drilling and creation. It additionally offers invaluable insights into movement coverage research in subsea pipeline layout. utilizing modeling thoughts that simulate the movement of non-Newtonian fluids, e.g., energy legislation, Bingham plastic, and Herschel-Bulkley flows, this ebook offers confirmed annular circulation methodologies for cuttings delivery and fixed pipe research in keeping with targeted experimental information bought from hugely deviated and horizontal wells. those tools are utilized for hugely eccentric borehole geometries to the layout of pipeline bundles in subsea purposes, the place such annular configurations come up in pace and thermal modeling applications.
Also lined commonly are the layout and modeling of pipelines having non-circular cross-sections, the place deviations from excellent round geometries come up from plugging as a result of wax deposition and the presence of hydrates and asphaltenes. As on the subject of annular flows, the hot algorithms observe to fluids with common rheological description; for instance, the tools express very accurately how stream expense and strain gradient range nonlinearly in useful challenge situations.
- Provides beneficial insights into circulation insurance analysis.
- Contains new algorithms on annular flows and fluids with common rheological descriptions offer strategies to useful difficulties.
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Additional resources for Computational Rheology for Pipeline and Annular Flow: Non-Newtonian Flow Modeling for Drilling and Production, and Flow Assurance Methods in Subsea Pipeline Design
For small n, the second derivative terms on the right side may be unimportant since such flows contain flat velocity profiles. Crochet, Davies and Walters (1984), which deals exclusively with nonNewtonian flows, presents discussions on different limit processes. For the above limits, the principal effects of nonlinearity can be modeled using the simpler and stabler Poisson model that results, one not unlike the classical equation for Newtonian flow. Of course, the apparent viscosity that acts in concert with the driving pressure gradient is still variable, nonlinear, and dependent on geometry and rate.
Low bottom speeds in eccentric holes regardless of rheology or flow rate) 32 Computational Rheology suggests that any errors incurred by using Equation 2-31 may be insignificant. This simplification is akin to the “local linearization” used in nonlinear aerodynamics; in any case, the exact geometry of the annulus is always kept. As noted earlier, borehole temperature may be important in drilling and production, but is probably not; thus, most studies neglect heat generation by internal friction.
Journal, Vol. 12, No. 2, March 1966, pp. 357-363. , Boundary Layer Theory, McGraw-Hill, New York, 1968. , Non-Newtonian Flow and Heat Transfer, John Wiley & Sons, New York, 1967. , Momentum, Energy, and Mass Transfer in Continua, Robert E. Krieger Publishing Company, New York, 1981. , Handbook of Fluid Mechanics, McGraw-Hill, New York, 1961. , Numerical Grid Generation, Elsevier Science Publishing, New York, 1985. , “Flow of a Power Law Fluid in an Eccentric Annulus,” SPE Drilling Engineering, September 1989, pp.