Baker Hughes introduced its StageWatch fracture-analysis service to collect the sound reservoir data needed to guide future drilling, perforating, fracturing, and completion programs. The data enable proper planning for future wells, effective refracturing strategies, and data-driven completion designs that increase production and ultimate recovery. To obtain these data, pressure and temperature gauges are inserted into purpose-built sleeves, which are deployed as part of the casing string. The StageWatch system was designed to allow flexibility of sleeve placement so that data could be captured from multiple zones in the wellbore without modifying the existing casing program. To retrieve the gauges after the job is completed, a bottomhole assembly (BHA) comprising a circulation sub, a recovery basket, and a shifting tool is run downhole on coiled tubing. The dogs on the shifting tool engage the sleeve and shift it open, releasing the gauges into the annulus. The gauges are caught in the basket, and the BHA is pulled out of the hole to the next sleeve. The BHA collects all of the memory gauges in a single trip, providing an efficient retrieval process. These data are then interpreted by an engineer to provide data administration and fracture, production, and reservoir characterization, enabling more-effective future fracturing programs.
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