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Keywords: hydrate plug
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35321-MS
... operation wellhead valve hydrate remediation skid hydrate plug blockage hydrate blockage operation communication west-african deep-water production well jumper Introduction Natural gas hydrates are crystalline solids composed of water and gas under specific temperature and pressure...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32470-MS
... Abstract The objective of the R&D project and subsequent field testing was to develop, test and commercialize a new technology with an emphasis on scanning speed for use in subsea flowlines to detect hydrate plugs through thick subsea coatings without the need for 360-degree access...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31998-MS
... effective chemical able to clear gas hydrate plugs in many cases. The low flashpoint of methanol makes it unsafe to be pumped or stored in large volumes in hot regions such as in the Middle East. The main objective of the current work is to develop a safer chemical treatment with a higher flashpoint...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30779-MS
... for engineering simulation but for operator training and real-time surveillance as well. hydrate plug flowrate liquid accumulation flow metering operation onshore arrival free water flowrate production monitoring pipeline pressure drop injection flow assurance upstream oil & gas flow rate...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27787-MS
... layer will not adhere to the wall in a tropical flowline, therefore, a hydrate plug could not form. If this concept is applied to operations of an existing asset, hydrate inhibitor usage can be significantly reduced whilst improving operation efficiency and flexibility. For a new facility design hydrate...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27001-MS
... coiled tubing hydrate inhibition pipeline remediate remediation of hydrates hydrate remediation wax remediation asphaltene inhibition pipeline blockage hydrate plug injection offshore technology conference inhibitor depressurization deposition active heating Marcelo , A. L...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25878-MS
... to deep-water export pipelines and flowlines is a relatively rare, low- occurrence/high-consequence event, recently compiled information shows that flowline problems involv- ing paraffin or hydrate plugs are more frequent than previously believed. In addition, removing these plugs is complex and difficult...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19634-MS
... and hydrates prevention strategies for dry gas deepwater pipelines. gas export pipeline operation hydrate formation offshore technology conference pipeline otc 19634 hydrate blockage incident coiled tubing upstream oil & gas flow assurance gep hydrate plug dewpoint dry gas pipeline...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18773-MS
... this simple and efficient device can also be used to dissociate a hydrate plug and eliminate the need for an additional remediation system. A series of reduced scale tests have been performed at the French Petroleum Institute (IFP) in a 2" insulated pressure cell where several hydrate plugs were dissociated...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2006
Paper Number: OTC-17814-MS
... Abstract Hydrate plugs were formed above the mud line in two dry tree oil wells in the Gulf of Mexico. The plugs were formed when trying to open the downhole safety valve with crude to return the wells to production after they were shut-in due to hurricane evacuation. Several attempts to melt...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17237-MS
... at the lower cost, especially by mitigating in an economic way various risks such as equipment failures or Flow Assurance issues (hydrate plugging, wax deposition, etc.). One of the main problems is the great complexity of the production process. Indeed, risks strongly interact with each other : as an example...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17229-MS
... expected. This paper describes the formation and dissociation of a hydrate plug formed during a deepwater wildcat testing operation in the EspÍrito Santo Basin, offshore Brazil. Hydrate formation occurred despite continuous alcohol injection. The plug was formed in the annulus between the coiled tubing (CT...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17572-MS
... Abstract A subsea bare flowline was plugged with hydrates and waxes causing loss of production. The hydrate plug was successfully dissociated by using the two-sided depressurization method. The wax plug in the subsea flowline was then successfully removed by using a low-cost sustained...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17345-MS
... is harder to identify. This area will become more important as we develop fields with problematic fluids that need reliable delivery of chemicals. To what subsea component are we referring? We are referring to umbilical tubes. Umbilical tubes have accounted for several hydrate plugs in subsea systems...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16555-MS
... has been selected for the field. The completion of subsea wells will be timed to maintain plateau production as the field depletes. hydrate plug requirement injection pressure drop ormen lange holdup pipeline production pipeline template hydrate remediation flow assurance upstream...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16691-MS
... Abstract Hydrate blockage detection, remediation and removal are successfully applied in a hydrate plug incident in the GOM. A hydrate plug occurred in mid-October 2002 in the Williams Field Services (WFS) owned and operated, 36-mile long, 10- inch gas export pipeline from ChevronTexaco's...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15257-MS
... Abstract In this work, we concentrated on hydrate dissociation by the method of depressurization (two-sided and one-sided). Experiments focused on formation of hydrate plugs and subsequently their dissociation by both the methods to develop a database. The experiments lead to broadening our...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15189-MS
... scale inhibition pipeline voltage asphaltene inhibition scale remediation production chemistry veslefrikk flow assurance shutdown hydrate plug remediation of hydrates platform protection system flowline operational experience hydrate inhibition wax remediation hydrate remediation...

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