Vertical Seismic Profiling via Coiled Tubing-Conveyed Distributed Acoustic Sensing
- Andreas Ellmauthaler (Halliburton) | William Palacios (Halliburton) | Michel LeBlanc (Halliburton) | Mark Willis (Halliburton) | George Knapo (Halliburton)
- Document ID
- Society of Petroleum Engineers
- SPE/ICoTA Well Intervention Conference and Exhibition, 26-27 March, The Woodlands, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- 3 Production and Well Operations, 2.2.2 Perforating, 2 Well completion, 5 Reservoir Desciption & Dynamics, 2.2 Installation and Completion Operations, 2.1.3 Completion Equipment, 5.1.8 Seismic Modelling, 2.4 Hydraulic Fracturing, 5.1 Reservoir Characterisation, 5.1.6 Near-well and vertical seismic profiles
- Distributed Acoustic Sensing, Case Study, Vertical Seismic Profiling, Coiled Tubing, Field Trial
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Distributed acoustic sensing (DAS) is a rapidly evolving fiber optic technology for monitoring cement curing, perforation performance, stimulation efficiency, and production flow and, more recently, for performing vertical seismic profiling (VSP). VSP data can be acquired and processed to determine velocity models that are used in surface seismic imaging for reservoir characterization, or for microseismic monitoring of hydraulic fracturing operations. The limitation of conventional VSP data acquisition has been well accessibility, with wireline-conveyed tools deployed during openhole or casedhole logging campaigns before well completion or during workovers. Fiber optic cable conveyance by coiled tubing (CT) expands the opportunity for VSP data acquisition during planned CT interventions. This paper presents an example of a CT DAS VSP acquisition. The processing steps are shown to overcome some of the noise challenges inherent in CT DAS data, such as persistently strong borehole tube waves induced from the surface operations activities. A case study is shown for the depth tie between surface seismic data and the CT DAS VSP derived corridor stack image, demonstrating the viability of CT deployed fiber to acquire DAS VSP data.
|File Size||1 MB||Number of Pages||8|
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