Application of Pseudo-acoustic Inversion Technique in Identifying Sandstone And Mudstone of Coal Seam Roof And Floor
- DOI
- 10.2991/iceeg-16.2016.57How to use a DOI?
- Keywords
- coal seam roof and floor, sandstone and mudstone, pseudo-acoustic curve, logging constrained inversion
- Abstract
The coal bed methane (CBM) content is often relatively high where the immediate roof and floor of the coal seam are mudstone. In order to predict the CBM rich region, position of coal seam roof and floor and distribution of sandstone and mudstone are based on acoustic wave impedance inversion and pseudo-acoustic inversion technique through seismic data and well logging data analysis. This method provides a basis for the exploration and development of the CBM. First of all, the position of coal seam roof and floor can be acquired accurately in the acoustic wave impedance inversion profile due to low acoustic impedance values of coal. Pseudo-acoustic curve is constructed by natural gamma curve. In the pseudo-acoustic inversion profile which has high lateral continuity, the mudstone shows high values, the sandstone shows low values, so it is possible to characterize the sandstone and the mudstone when the range is acquired though data analysis. The application in practice shows that, the inversion method is better than conventional one in resolution and achieved good results in practice.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Wenxi Wei AU - Suzhen Shi AU - Chao Sun AU - Shijie Li PY - 2016/06 DA - 2016/06 TI - Application of Pseudo-acoustic Inversion Technique in Identifying Sandstone And Mudstone of Coal Seam Roof And Floor BT - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology PB - Atlantis Press SP - 207 EP - 210 SN - 2352-5401 UR - https://doi.org/10.2991/iceeg-16.2016.57 DO - 10.2991/iceeg-16.2016.57 ID - Wei2016/06 ER -