SPE Event Archive

Event 

November meeting
Title:
November meeting
When:
26.11.2013
Where:
Technical University of Denmark - Kongens Lyngby

Description

We look forward to seeing You at the next SPE meeting at DTU. Three presentations will be given from Ph.D. students representing different directions of the petroleum-related research at DTU.

  • Max La Cour Christensen, Algebraic Multilevel solvers for Reservoir Simulation.

The presentation will focus on novel algebraic multilevel solvers applied to reservoir simulation. The purpose of the work is to enable fast time-to-solution and large-scale simulation on modern massively parallel computers. These developments are fundamental to improve engineering analysis in next-generation reservoir simulation tools. The objective is to design a scalable parallel solver with mesh-independent convergence for unstructured grids. The numerical challenges in reservoir simulation include highly discontinuous coefficients, strong anisotropies, high nonlinearity, bad cell aspect ratios and mixed near-hyperbolic/elliptic characteristics. In a first step, we have implemented a novel multilevel solver, which is based on information given by a Mixed Finite Element discretization. This approach provides a flexible framework for higher-order discretizations. Furthermore, as a comparison, we have implemented a solver based on the Auxiliary Space Algebraic Multigrid method. Numerical tests demonstrate mesh-independent convergence for both solvers, meaning time-to-solution will scale linearly with problem size. We will discuss prospects of further developing the algorithms for parallel execution on modern hardware.

  • Michael Frost, Measurement and Modeling of phase equilibrium of oil systems with polar chemicals.

As the exploitable oil resources decrease, more advanced recovery methods are employed in the oil industry. This has led to an increase in used chemicals, in order to ensure a constant and safe production. These chemicals have many applications, and are part of different families like alcohols, glycols, alkanolamines etc.Due to rising demands from environmental agencies and a wish for a more refined product, it is becoming increasingly important for downstream processing to know/predict the solubility of oil and gas with different complex chemicals. The objective of this work is to further develop the CPA equation of state for use in calculation of solubility between oil and polar chemicals.

  • Morten Kanne Sørensen, Correcting sonic logs for invasion.

Sonic logs measure the travel time of elastic waves in a region close to the borehole. In this region the original fluid have typically been replaced by mud-filtrate causing the measured travel times to differ from those of the undisturbed formation. In order to get the travel times in the undisturbed formation, the measured log needs to be corrected. The fluid contribution to the travel times can be routinely quantified when the fluids are allowed to move freely in the entire porosity. Data measured in our laboratory shows, however, that pore-filling clays may conspire to complicate matters. The question addressed is just how difficult clays are and what can be done about it.

The after-dinner speech will be delivered by Professor Erling H. Stenby, Chairman of Center for Energy Resources Engineering (CERE) & Head of Department DTU Chemistry, on CERE and its example as a succes story of university – industry collaboration.

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Venue

Venue:
Technical University of Denmark   -   Website
Street:
b. 101 Entrance A, Auditorium 1, Anker Engelunds V
ZIP:
2800
City:
Kongens Lyngby

Description

Additional information