Technology Applications Case Studies Publications News Careers About Us Publications SPE-204184 Evaluating Infill Well Performance and Frac Hit Interference Using Intervention Based Distributed Fiber Optics SPE-204188 Comparing and Combining Camera, Tracer and Distributed Temperature and Acoustic Sensing (DAS+DTS) for a Holistic Understanding of Stimulation and Production Performance. URTeC-2020-3274-MS Intervention Based Distributed Fiber Optics Allows for a Systematic Evaluation of Diverters, Limited Entry, and HVFR Fluids in the Northwest Stack Play. SPE-106507-MS Semi-stiff Carbon-Fiber Rod Pushed into Live Wells for Reservoir Performance Monitoring and Leakage Detection. SPE-170663-MS Data Acquisition and Processing of Carbon Rod Conveyed DTS and DAS in Very Long Horizontal Wells: First Trial in North Sea Danish Sector. SPE-194338 Validating Refrac Effectiveness with Carbon Rod Conveyed Distributed Fiber Optics in the Barnett Shale for Devon Energy SPE-189880-MS Mining the Bakken II – Pushing the Envelope with Extreme Limited Entry Perforating URTeC-2668789 An Integrated Study of Geophysical, Petrophysical, and Geochemical Data to Define Optimal Reservoir Development of the Avalon Shale in the Salado Draw Field, Delaware Basin, Lea County, New Mexico URTeC-2796 Using Multidisciplinary Data Gathering to Evaluate eXtreme Limited Entry Completion Design and Improve Perforation Cluster Efficiency EAGE 1st Fiber Optic Workshop Amsterdam: Abstract 26, DAS Energy Calibration Applied to Multi-Rate Injection Profiling in a Horizontal Water Injector © Copyright 2018 Ziebel Design by Studio98

Technology Applications Case Studies Publications News Careers About Us Flow Allocation With the ability to see all the well, all the time Ziebel’s Z-system is ideally suited to flow allocation in horizontal or complex production logging scenarios. With its 0.6” OD the Z-system can be run through tubing with the well flowing with no impact on the flow characteristics. Non-uniform dynamic flow such as slugging or fall back can be easily identified. In horizontal unconventional wells Z-system uses an integrated DAS and DTS approach to quantify flow rates at levels down to a few barrels per day. DAS provides a visual, qualitative identification of cluster flow and is used to constrain the DTS temperature model which in turn quantifies the flow from each zone. For conventional wells the same principles apply with Z-system ideally suited to complex wells or wells with restrictions which prevent wireline production logging. The Z-system bottom hole assembly can be as small as 1” OD and contains point pressure and temperature sensors plus an accelerometer and CCL for depth control. Fiber-optic telemetry transmits these sensors to surface in real time. © Copyright 2018 Ziebel Design by Studio98