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- W1972024239 abstract "Abstract Asphaltene deposition can greatly impair production rates, and even with sound prevention and remediation measures, can still lead to a reduction in production rates or even well failure. An intervention to repair a subsea failure is often times more expensive than the original completion cost, and can greatly affect the overall project economics. The prevention of asphaltene with chemicals will work to a certain extent, but only from the chemical injection point upward. Remediation efforts such as the bullheading of chemicals will help to restore production to previous levels, but can cause complications in wells with sand control equipment. Anadarko recently experienced a subsea completion failure due to excessive asphaltene deposition. Xylene was used to remediate the asphaltene, but the buildup continued below the injection point. Ultimately, a gravel pack failure occurred after a bullhead remediation effort. During the intervention, it was determined that the blockage in the wellbore region below the chemical injection point was the cause of the well failure. A new methodology and hardware were incorporated into the sidetrack, which should eliminate bullhead treatments while still preventing asphaltene deposition from the bottom perforation to surface. Preventing a sidetrack or intervention is a huge monetary savings. This paper will demonstrate the theory, hardware and application of new completion tools and methods which can prevent costly interventions or sidetracks. This system can also assist with scale, organic deposits, hydrate accumulations, corrosion, or liquid loading at or below the point of entry of hydrocarbons, which previously was not possible on subsea completions." @default.
- W1972024239 created "2016-06-24" @default.
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- W1972024239 date "2008-09-21" @default.
- W1972024239 modified "2023-09-26" @default.
- W1972024239 title "Successful Adaptation of a New Generation Wireline Installation Capillary System for Downhole Chemical Injection on Subsea Ticonderoga Field" @default.
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- W1972024239 doi "https://doi.org/10.2118/115338-ms" @default.
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