Full text loading...
-
Advanced Depth Imaging Technologies: A Case Study in the Carpathians Foothills
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 83rd EAGE Annual Conference & Exhibition, Jun 2022, Volume 2022, p.1 - 5
Abstract
In this paper, we present a depth imaging case study from the foothills of the Southern Carpathians in Romania. The input data consist of a merge of 12 land surveys, mostly acquired with dynamite source. The varied rough terrain and the presence of a complex thrust body represent the main imaging challenges. At first, we will show how the combination of Multi-Wave Inversion (MWI), joint first break (FB) and slope tomography, and Optimal Transport Full-Waveform Inversion (OT-FWI) enabled us to construct a high-resolution near-surface velocity model that solved some important imaging distortions. Next, we will detail an advanced Multi-Layer Tomography workflow complemented by Time-lag FWI (TLFWI), that enabled us to capture the strong lateral and vertical velocity contrasts of a large thrust and, consequently, restore the focusing and the faulted structure of the Jurassic reservoir units underneath.