Full-waveform inversion (FWI) is a technique having the potential for building high-resolution elastic velocity models. We proposed to apply this technique to wireline monopole acoustic logging data to obtain the near wellbore formation velocity structures, which can be used in wellbore damage or fluid intrusion evaluation. A 2D FWI using monopole acoustic logging data is presented. The FWI is established in cylindrical coordinates instead of Cartesian coordinates in order to adapt to the borehole geometry. A preconditioner is designed for suppressing the influence of the strong borehole guided waves in the inversion. Synthetic tests demonstrate that high-resoultion elastic velocity profile around borehole can be inverted from monopole acoustic logging data by using the proposed method.

Tuesday, October 13, 2020

Session Start Time: 1:50 PM

Presentation Time: 3:55 PM

Location: 351D

Presentation Type: Oral

Keywords:
log analysis, fwi method, acoustic logging data, exploration geophysicist 10, well logging, variation, national university, seg international exposition, upstream oil & gas, borehole
Subjects:
Reservoir Characterization, Formation Evaluation & Management, Seismic processing and interpretation, Open hole/cased hole log analysis
This content is only available via PDF.
2020. Society of Exploration Geophysicists
You can access this article if you purchase or spend a download.