Applying corrosion inhibitor within tubulars
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United States of America Patent
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Feb 27, 2024
Grant Date -
Aug 31, 2023
app pub date -
Feb 25, 2022
filing date -
Feb 25, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
A central tubular defines a central flow passage and spray nozzles along an outer circumference of the central tubular. A first brush pig supports a first end of the central tubular. A second brush pig supports a second end of the tubular. An inflatable balloon is at the second end of the tubular. The inflatable balloon is encircled by the second brush pig. The inflatable balloon is configured to cause a first pressure drop across the balloon when in an inflated state and cause a second pressure drop, less than the first pressure drop, across the balloon when in a deflated state. A flow control system is at the first end of the tubular and is configured to regulate fluid exchange with the tubular and fluid exchange with the inflatable balloon.
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