... 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...

... in the field (greater than 50°C), complete miscibility with water, and effective dissolution of gas hydrate plugs in a reasonable amount of time (less than two hours). A list of alternative chemical treatments that are either aqueous-based, solvent- based or a mixture of both was identified to achieve certain...

... Hammerschmidt , E.G. 1939 . Gas Hydrate Formation in Natural Gas Pipelines . Oil Gas J. 37 ( 50 ): 66 . hydrate plug flowrate liquid accumulation flow metering operation onshore arrival free water flowrate production monitoring pipeline pressure drop injection...

... 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...

... 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...

... for hydrate remediation and the engineering study that was conducted to assess the risks. hydrate plug upstream oil & gas pressure increase offshore technology conference deepwater hydrate plug remediation gas lift remediation displacement plet displacement flowline fundamental physics...

... 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...

... Abstract The paper describes the actions taken to re-entry a well located in ultra-deep waters (1541 m water depth) whose sub sea Christmas-tree was blocked by a solid hydrate plug and therefore could not be liberated by means of its standard releasing tools. A heat-releasing treating fluid...

... 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...

... and how 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...

... 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...

... petri net hydrate plug deposition probability production process Abstract While designing Deep Offshore fields developments, several decisions have to be made : defining the system architecture, selecting technologies, defining operating and maintenance policies, etc. The objective...

... flow rate otc 17229 representation upstream oil & gas free convection annular space ethanol injection rate coiled tubing technology conference assumption completion fluid heat transfer injection hydrate plug drillstem/well testing drill string hydrate formation thermal...

... 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...

... 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...

.... The abstract must contain conspicuous acknowledgment of where and by whom the paper was presented. 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...

... hydrate plug requirement injection pressure drop ormen lange holdup pipeline production pipeline template hydrate remediation flow assurance upstream oil & gas liquid holdup hydrate meg multiphase production pipeline ice formation plug depressurization meg injection...

... 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...

... electrical heating upstream oil & gas wax inhibition paraffin remediation heating deh system oilfield chemistry scale inhibition pipeline voltage asphaltene inhibition scale remediation production chemistry veslefrikk flow assurance shutdown hydrate plug remediation...

..., pressures, and other related hydrate blockage informa- tion, the motion of hydrate plugs that might be freed during pressure reduction on one side of the blockage system was calculated. (For a discussion of calculating simulated motion of freed hydrate blockages with OLGA , see Xiao, Shoup, Hatton...