| Autor: |
M. Borghi, M. Mele, Z. Marić-Đureković, F. Chinellato, D. Parlov, P. Balossino |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Proceedings. |
| ISSN: |
2214-4609 |
| DOI: |
10.3997/2214-4609.201702390 |
| Popis: |
Fractures characterization is an evolving topic in the Logging While Drilling (LWD) world, especially in horizontal wellbores. The various types of wellbore images available today are able to describe fractures down to a resolution of 0.2 x 0.125 in. The presence of void spaces, including fractures are often detected by ultrasonic and density calipers, along with acoustic measurements. The integration of these data with borehole images information can help discriminating among open and closed fractures. The depth of investigation is still a limiting factor but using deep azimuthal electro-magnetic measurements while geosteering a well in Croatia opened for new interpretation possibilities. The real-time data showed initially what appeared to be a complex fractures network. The ability of resolving multiple boundaries made possible the visualization of the conductive features of limited thickness crossing the wellbore. This experience highlighted that the latest generation of deep azimuthal electro-magnetic technology integrated with near-wellbore measurements is able to detect conductive features corresponding to fractures extending several meters far from the wellbore providing new interpretation perspectives. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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