Name
Title | ||
|---|---|---|
A Hybrid Loop-Tree FEBI Method for Low-Frequency Well Logging of 3-D Structures in Layered Media |
Abstract | ||
|---|---|---|
Electromagnetic simulation plays an essential role in formation conductivity determination by electromagnetic well-logging tools, especially when the nonvertical borehole and invasion zones are present in a layered earth. A hybrid finite-element boundary integral (FEBI) method is suitable for such well-logging simulations. The usage of layered medium Green’s functions allows the simulation background to be a planar stratified medium to characterize the earth formation. However, conventional FEBI using the Rao–Wilton–Glisson (RWG) basis function produces inaccurate results due to the low-frequency breakdown of the boundary integral equation solution. The new contribution of this work is to apply the loop-tree (LT) basis functions in the FEBI method to reduce the numerical error at low frequencies. Such an LT-FEBI method can handle all specific requirements of well-logging simulations at low frequencies. A direct solver is applied to make it more efficient to obtain logging curves with multiple source locations. The LT-FEBI simulation results are validated in several numerical examples, including a challenging well-logging model with a deviated borehole and invasion zones in the Oklahoma formation having 28 layers. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/TGRS.2021.3075075 | IEEE Transactions on Geoscience and Remote Sensing |
Keywords | DocType | Volume |
Finite-element boundary integral (FEBI),layered media,loop/tree basis functions,Oklahoma formation | Journal | 60 |
ISSN | Citations | PageRank |
0196-2892 | 0 | 0.34 |
References | Authors | |
0 | 7 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yang Zhong | 1 | 0 | 0.34 |
| Hanming Wang | 2 | 0 | 1.01 |
| Wei-Feng Huang | 3 | 4 | 2.64 |
| Wenhao Xu | 4 | 1 | 2.06 |
| Jiaqi Xu | 5 | 106 | 9.50 |
| Junwen Dai | 6 | 0 | 0.34 |
| Qing-Huo Liu | 7 | 288 | 53.70 |