Download Managed Pressure Drilling. Modeling, Strategy and Planning by Wilson C. Chin PhD PDF

By Wilson C. Chin PhD

  • ''The writer extends his prior paintings on modeling annular flows in controlled strain drilling (Borehole Flow Modeling in Horizontal, Deviated and Vertical Wells, 1992, and Computational Rheology for Pipeline and Annular Flows, 2001), keeping the curvilinear grid know-how hired within the past books as his mathematical beginning, yet summarizing significant methodological advancements in accuracy, pace, and engineering concentration. The textual content covers the mathematical concept, numerical implementation, resource code examples, and computational validations, usually with comparisons to laboratory and box information and results.''--Reference and study ebook information, August 2012, web page 263


Show description

Read Online or Download Managed Pressure Drilling. Modeling, Strategy and Planning PDF

Best mining books

Rock mechanics

This new version has been thoroughly revised to mirror the awesome concepts in mining engineering and the striking advancements within the technology of rock mechanics and the perform of rock angineering taht have taken position over the past 20 years. even supposing "Rock Mechanics for Underground Mining" addresses a number of the rock mechanics concerns that come up in underground mining engineering, it isn't a textual content completely for mining purposes.

New Frontiers in Mining Complex Patterns: First International Workshop, NFMCP 2012, Held in Conjunction with ECML/PKDD 2012, Bristol, UK, September 24, 2012, Rivesed Selected Papers

This booklet constitutes the completely refereed convention lawsuits of the 1st overseas Workshop on New Frontiers in Mining complicated styles, NFMCP 2012, held together with ECML/PKDD 2012, in Bristol, united kingdom, in September 2012. The 15 revised complete papers have been conscientiously reviewed and chosen from quite a few submissions.

Rapid Excavation and Tunneling Conference Proceedings 2011

Each years, specialists and practitioners from around the globe assemble on the prestigious fast Excavation and Tunneling convention (RETC) to benefit concerning the most modern advancements in tunneling know-how, and the signature initiatives that support society meet its transforming into infrastructure wishes. inside of this authoritative 1608-page e-book, you’ll locate the a hundred and fifteen influential papers that have been awarded supplying helpful insights from initiatives around the globe.

Extra resources for Managed Pressure Drilling. Modeling, Strategy and Planning

Sample text

Also, let ρ be the constant fluid density and p be the pressure; we denote by Szz, Syy, Sxx, Szy, Syz, Sxz, Szx, Syx, and Sxy the nine elements of the general extra stress tensor S. 19) Simple rheological models These equations apply to all Newtonian and non-Newtonian fluids. 20, N(Γ) is the “apparent viscosity” satisfying NðΓÞ . 28) Unlike the constant laminar viscosity μ in classical Newtonian flow, we will demonstrate that the apparent viscosity depends on the details of the particular problem being considered—for example, the rheological model used, the exact annular geometry occupied by the fluid, the applied pressure gradient, or the net volumetric flow rate.

If so, the locations of all fluid interfaces can be determined kinematically on a volume basis alone without rheological considerations. Then, at any given time tn, with the volumetric flow rate Q(tn) known, either of the simulators “Steady 2D” and “Transient 2D” or any of the many specialized flow solvers available in their respective utilities menus can be used to determine the pressure gradient within any fluid slug. Since the lengths of all slugs are also available kinematically, the available set of pressure gradients can be integrated spatially, starting with the pressure value known at the surface choke to provide the pressure distribution along the borehole at that instant in time.

25 Transient 2D “Start” menu. , number of time steps, total time) are self-explanatory. Our transient simulator integrates the governing partial differential equations in time by advancing the discretized form of the equations one time step Δt at a time. Since mesh sizes associated with our curvilinear coordinates are hardcoded, the only parameter available to the user for both accuracy and numerical stability control is Δt. The selected value is constant for the entire duration of the simulation, although in future updates to the algorithm dynamically changing step sizes based on local flow gradients will be used to optimize the integrations.

Download PDF sample

Rated 4.42 of 5 – based on 10 votes