Complementing Production Logging with Spectral Noise Analysis to Improve Reservoir Characterisation and Surveillance
- Nelson Suarez (Dubai Petroleum Establishment) | Ademola Otubaga (Dubai Petroleum Establishment) | Nagendra Mehrotra (Dubai Petroleum Establishment) | Arthur Aslanyan (TGT Oil and Gas Services) | Irina Aslanyan (TGT Oil and Gas Services) | Murat Khabibullin (TGT Oil and Gas Services) | Michael Wilson (TGT Oil and Gas Services) | Jamal Barghouti (TGT Oil and Gas Services) | Yulia Maslennikova (TGT Oil and Gas Services)
- Document ID
- Society of Petrophysicists and Well-Log Analysts
- SPWLA 54th Annual Logging Symposium, 22-26 June, New Orleans, Louisiana
- Publication Date
- Document Type
- Conference Paper
- 2013. held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting authors
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Spectral Noise Logging (SNL) can provide information on reservoir flow units behind one or multiple barriers, which is beyond the spinner capability. The SNL tool is designed to record a high-resolution noise pattern in a wide frequency range, normally generated by fluid or gas flowing through porous media and the wellbore. Noise pattern recognition is critical to differentiate between formation flow and wellbore flow.
SNL complements conventional production logging techniques by providing significant information that enhances reservoir flow characterisation. The tool design, data acquisition and advanced processing allow the location of active flow units and differentiation between flows through the reservoir matrix, fractures, high-permeability features, behind-casing channels and wellbore completion components.
Thorough analysis of active flow streaks helps to monitor sweep efficiency and identify bypassed oil regions.
Reservoir matrix flow noise remarkably correlates with porosity distribution. Therefore, it is an effective way to verify porosity and permeability models. This paper presents five field cases of SNL surveys performed during 2009–2011 in wells operated by Dubai Petroleum Establishment. These cases illustrate the allocation of injection by zone with rates below the spinner threshold, evaluation of the reliability of plugged perforations, and description of the behindpipe flow geometry. The paper also contains an introduction to SNL tool operation and noise data processing principles.
|File Size||705 KB||Number of Pages||9|