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Keywords: jacobian matrix
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Journal Articles
Journal: SPE Journal
SPE J. (2022)
Paper Number: SPE-210084-PA
Published: 21 September 2022
... at the horizontal east/west tangent sections. Copyright © 2022 Society of Petroleum Engineers measurement while drilling drilling measurement information jacobian matrix covariance matrix matrix msa correction upstream oil & gas drilling data acquisition vector accuracy drillstring design...
Includes: Supplementary Content
Journal Articles
Journal: SPE Journal
SPE J. 20 (06): 1350–1365.
Paper Number: SPE-170092-PA
Published: 18 December 2015
... switch between a bisection and a Newton's step depending on the condition number of the Jacobian matrix. The bisection algorithm solves for temperature solely on the basis of the enthalpy constraint when narrow-boiling behavior is detected by a large condition number of the Jacobian matrix. The modified...
Journal Articles
Journal: SPE Journal
SPE J. 19 (04): 726–736.
Paper Number: SPE-163608-PA
Published: 30 January 2014
... of robustness observed in practice, and present remedies. More precisely, we will propose a preconditioning strategy (based on a suitable combination of left and right preconditioning of the Jacobian matrix) that aims at a compromise between the solvability of the pressure subproblem by AMG and the needs...
Journal Articles
Journal: SPE Journal
SPE J. 15 (02): 526–544.
Paper Number: SPE-119147-PA
Published: 29 December 2009
... effort, the timestep is adapted heuristically and the previous effort is wasted. Upstream Oil & Gas step length algorithm reservoir simulation Jacobian matrix solution path Artificial Intelligence Fluid Dynamics iteration saturation computational effort june 2010 flow in porous media...
Journal Articles
Journal: SPE Journal
SPE J. 15 (02): 426–435.
Paper Number: SPE-119057-PA
Published: 03 December 2009
... the Jacobian matrix ( J = ∂ R / ∂ x ) and δ represents the solution update (i.e., x n + 1 , k   = x n + 1 + δ , where superscript k designates iteration level). The idea when applying POD is to project the system into a low-dimensional space...
Journal Articles
Journal: SPE Journal
SPE J. 3 (04): 316–323.
Paper Number: SPE-52051-PA
Published: 01 December 1998
... and convergence behavior of the implicit techniques are discussed. approximation iteration step Linearization Technique Modeling & Simulation type primary constraint equation material balance error reservoir simulation impem technique Jacobian matrix saturation balance error equation implicit...

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