Technology Applications Case Studies Publications News Careers About Us ILLUMINATE YOUR WELL Intervention Based Fiber Optics Enabling Well Optimization Z-system 23,000 ft, 0.6” OD semi-stiff carbon composite rod that can be deployed in vertical and horizontal wells and contains 6 fiber optic lines plus point sensors at the end of the rod. Distributed Fiber Optics Image all the well, all the time with fiber optic distributed temperature and distributed acoustic measurements. Rapid, user friendly Ziebel answer products enable quick decision making. Applications Flow Allocation Quantify flow rates from down to a few barrels per day up to millions of SCF gas in horizontal and vertical wells. Detect gas and liquid entry from closely spaced clusters and image the dynamic behaviour of the well. Read More Well Integrity Image the whole of the well simultaneously with DAS and DTS to identify leaks and fluid movement behind multiple barriers. Monitor fluid movement into overburden zones. Read More OUR BLOG Recent News Interested in FDIs? Ziebel recently partnered with WellSense to deploy innovative technology to give you real-time answe... Read More Two Locations, Two Great Sunsets !! We are dedicated to consistently providing high quality, cost effective data to help evaluate comple... Read More SPE PB YP September General Meeting It's not too late to register for today's YP September General Meeting on "Illuminating Wells with I... Read More © Copyright 2018 Ziebel Design by Studio98

Technology Applications Case Studies Publications News Careers About Us Refrac Case Study Figure 1: Reservoir section showing overall performance for run 1, 2 and 3. In this case study, the effect of refraking a gas well is studied by comparing DAS and DTS data acquired using Z-System® within three different runs. Run 1 was performed before the refrac, run 2 was performed immediately after the refrac and run 3 was performed 90 days after the refrac. Surface production rates after each run 1, 2 and 3 were approximately 1x MSCF, 7x MSCF and 3.33x MSCF respectively. Figure 1 shows acoustical representation of the overall performance. Further details can be found in SPE Paper 194338 The dots in Figure 2 indicate all the stages that were stimulated. From the chart, we can observe and accurately calculate using the Nowak method what each of the clusters took regarding stimulation. In this case we are able to see that new clusters out performed old clusters when refraking. Figure 2: Thermal modeling using PLATO Figure 3 - Qualitative modeling of well using acoustic data To further confirm what was observed in the thermal modeling, a qualitative model using acoustic data was overlaid with high correlation present. The match further indicated that the new clusters contributed a larger proportion of the new production and outputted a higher intensity in sound ranking them as stronger producing zones then the older fractured zones. © Copyright 2018 Ziebel Design by Studio98