Analysis of Fractured Reservoir Structure by Interpretation of FMI and VSP Logs
Afshin Davarpanah*, Masoud Kakoli and Hossein Ahmadi
Department of Petroleum, Science and Research Branch, Islamic Azad University, Tehran, Iran
- *Corresponding Author:
- Afshin Davarpanah
Department of Petroleum
Science and Research Branch
Islamic Azad University, Tehran, Iran
E-mail: [email protected]
Received date: October 31, 2016; Accepted date: December 04, 2016; Published date: December 08, 2016
Citation: Davarpanah A, Kakoli M, Ahmadi H (2016) Analysis of Fractured Reservoir Structure by Interpretation of FMI and VSP Logs. J Marine Sci Res Dev 6:216. doi: 10.4172/2155-9910.1000216
Copyright: © 2016 Davarpanah A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Imaging technology into the well is the tools for logging system, interpretation of data obtained from the well and to create the image with high resolution from the wells. This technology creates an accurate image (screenshot tools and the vertical seismic) on structural characteristics, layering, fractures, faults, texture and secondary porosity play an important desirable role in describing the reservoir. In the carbonate reservoirsthat most of Iran reservoirs are included in this type fractures are the most important factor in the production of these reservoirs. In the fractured carbonated reservoirs faults and folds makes unwanted changes in the structure of these reservoir. Structural complexities occur at different scales. For example, major faults and the original boundaries between formations are visible on the surface seismic data. But small-scale changes and faults in seismic data cannot be determined and it is essential to use small-scale of data and information sources. For achieving to these purposes it can be combined the result of small-scale data such as internal wellbore seismic VSP (vertical seismic profile) that having separating power in meter limit and FMI (formation micro imager) imaging logs that having separating limit in centimeter limit that could be able to modeling structural complexities and distribution of fractures around well. It should be noted that identifying occurrences around the wellbore is very important in drilling, completion procedures and development programs. FMI (formation micro imager) logs can be directly determined the inverted changes of wellbore layers and formation structures and also was an important factor for stratifying layers and determining the lithology of oil and gas explorations that can be determined the wellbore fractures, inclination and direction by using its interpretation. Moreover VSP (vertical seismic profile) logs is the way that generated signals at the surface are received by the geophone at different depth levels in the wells, which by its interpretation; changes in wellbore direction, velocity profiles, faults with higher accuracy around the wells and fractures around the well can be determined.