A two-dimensional self-adaptive hp finite element method for the characterization of waveguide discontinuities. Part I: Energy-norm based automatic hp-adaptivity

2007 ◽  
Vol 196 (49-52) ◽  
pp. 4823-4852 ◽  
Author(s):  
Luis E. García-Castillo ◽  
David Pardo ◽  
Ignacio Gómez-Revuelto ◽  
Leszek F. Demkowicz
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Energy Norm ◽  
Two Dimensional ◽  
Waveguide Discontinuities ◽  
Element Method ◽  
Self Adaptive ◽  
Hp Finite Element

A study of azimuthal electromagnetic wave LWD based on self-adaptive hp finite element method

2018 ◽  
Vol 32 (34n36) ◽  
pp. 1840073
Author(s):  
Hui Li ◽  
Yi-Bo Jiang ◽  
Jian-Wen Cai
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Wave ◽  
Real Time ◽  
Simulation Results ◽  
Peak Value ◽  
Element Method ◽  
Self Adaptive ◽  
Hp Finite Element

Azimuthal electromagnetic wave logging-while-drilling (LWD) technology can detect weak electromagnetic wave signal and realize real-time resistivity imaging. It has great values to reduce drilling cost and increase drilling rate. In this paper, self-adaptive hp finite element method (FEM) has been used to study the azimuthal resistivity LWD responses in different conditions. Numerical simulation results show that amplitude attenuation and phase shift of directional electromagnetic wave signals are closely related to induced magnetic field and azimuthal angle. The peak value and polarity of geological guidance signals can be used to distinguish reservoir interface and achieve real-time geosteering drilling. Numerical simulation results also show the accuracy of the self-adaptive hp FEM and provide physical interpretation of peak value and polarity of the geological guidance signals.

A parallel direct solver for the self-adaptive hp Finite Element Method

2010 ◽  
Vol 70 (3) ◽  
pp. 270-281 ◽  
Author(s):  
Maciej Paszyński ◽  
David Pardo ◽  
Carlos Torres-Verdín ◽  
Leszek Demkowicz ◽  
Victor Calo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
The Self ◽  
Direct Solver ◽  
Element Method ◽  
Self Adaptive ◽  
Hp Finite Element
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