Interpretation of seismic data using the open source environment (OpendTect) | |
| Author | Avirut Puttiwongrak |
| Call Number | AIT Thesis no.GE-08-20 |
| Subject(s) | Open source software Seismic reflection method--Data processing |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geosystem Exploration and Petroleum Geoengineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-08-20 |
| Abstract | The seismic interpretation is one of three major sequences of the seismic exploration, including seismic data acquisition, seismic data processing and seismic interpretation. Interpretation work very expensive and it is such specialized that only a small number of subsurface experts could handle. As the results of seismic interpretations are needed for different steps of oil and gas exploration, the number of users of seismic interpretation results is increased with the increasing exploration activity. In addition, the number of small companies involved with exploration site in Southeast Asia is also increasing visibly. In such a context, an open source platform for seismic interpretation that can be accessible to a wider circle of users for both academic education and industrial applications is of great interest to the concerned academician and practical engineers. This study has a primary objective to study install and implement the open source platform, OpendTect, as donated to the Asian Institute of Technology, AIT, by dGB Earth Science. In addition, to more application of this modern software, a 2D seismic dataset, modified by Department of Mineral Resources of Thailand (DMR), was interpreted using this software. Provincial Electricity Authority of Thailand (PEA) has requested DMR this survey as they want to lay a subsea cable from Leam Ngob district to Koh Chang district. The interpretation was carried out with both open source system and license system. The data enhancement with the fault enhancing filter and the interpretation using horizon tracking were performed in the open source system, while the dip steering median filter and sequence stratigraphic interpretation system (SSIS) was performed in the license system. The fault enhancing filter increased the horizon visibility and the dip steering median filter could remove well the noise. For the interpretation using horizon tracking the layers were divided in different horizons and the interpretation using SSIS divided the layers by colors. Both the interpretation using horizon tracking and SSIS were completed with the annotations and texts. As the main output of this study, one can conclude OpendTect can be successfully used for the seismic interpretation. |
| Year | 2009 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-08-20 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Pham Huy Giao; |
| Examination Committee(s) | Park, Kyung-Ho;Noppadol Pinpipat;Preecha Laochu; |
| Scholarship Donor(s) | Royal Thai Government; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2009 |