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- W2518320101 abstract "Abstract The increasing demand for annular isolation in openhole applications drives the need for tools to operate in non-controlled bores where large washouts can limit the reliability of sealing in fracturing, off-bottom cementing and other operations performed in openhole. The service industry has been developing technology to meet these challenges for years but these efforts have often resulted in costly solutions and less than desirable pressure ratings or production rates. A milestone was recently achieved in openhole packer development due to collective advancement in design process, state-of-the-art polymeric material development and design validation utilizing fiber-optic sensors. In-house testing indicates superior results: HP/HT capacities with the enhanced capability of operating in ~288% larger radial gaps, 50% lower setting pressures and 67% lower swab-off pressure. An important discovery from the use of fiber-optics was confirmation of the self-energizing nature of the packer along with data directly relating setting pressure to casing stress and thus the near wellbore. This technology and methodology will fundamentally change packer design and could be the greatest breakthrough in this area over the last 50 years. This paper elaborates on how the design process is integrated with concept evaluation, material selection and qualification, design optimization using structural analysis techniques, rapid design experimentation and design validation utilizing fiber-optic sensors to achieve 13,000 psi [89,632 kPas] and 5,000 psi [34,474 kPas] ratings at 350 °F [450 K] for gauge and large washout geometries, respectively. This technology is currently being evaluated in field trials in the Middle East." @default.
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- W2518320101 date "2016-09-26" @default.
- W2518320101 modified "2023-09-23" @default.
- W2518320101 title "Extreme Expansion Openhole Packer with HP/HT Capabilities" @default.
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- W2518320101 doi "https://doi.org/10.2118/181505-ms" @default.
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