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Paper Information

Title: 

ASPHALTENE PRECIPITATION DUE TO PRESSURE DEPLETION IN UNDERSEA PIPELINES

Type: PAPER
Author(s): DASHTI HOSSEIN,JAHANGIRI MAZIAR,KHALILI VAVSARI HAMID,HOSSEINI SEYED ABDOLSALAM
 
 
 
Name of Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Type of Seminar:  CONFERENCE
Sponsor:  PORTS AND MARITIME ORGANIZATION
Date:  2012Volume 10
 
 
Abstract: 

INTRODUCTION: CRUDE OIL IS A COMPLEX MIXTURE. IT CONSISTS OF FOUR MAIN HYDROCARBON GROUPS: SATURATED HYDROCARBONS, AROMATICS, RESINS AND ASPHALTENES. ASPHALTENES ARE DEFINED AS THE CRUDE OIL FRACTION THAT PRECIPITATES UPON THE ADDITION OF AN N-ALKANE (USUALLY N-PENTANE OR N-HEPTANE) BUT REMAINS SOLUBLE IN TOLUENE. ASPHALTENE PRECIPITATION AND DEPOSITION IS ONE OF THE MOST IMPORTANT PROBLEMS IN DIFFERENT STAGES OF PETROLEUM PRODUCTION. IT CAUSES THE PLUGGING OF WELLBORE, PIPELINES AND PRODUCTION EQUIPMENTS. TO MAINTAIN THE PRODUCTION OF WELL AND AVOID PRESSURE REDUCTION DUE TO ASPHALTENE DEPOSITION, SO MANY MECHANICAL AND CHEMICAL METHODS HAVE BEEN APPLIED. THESE METHODS ARE EXPENSIVE AND NEED SUFFICIENT TIME; THEREFORE IT IS BETTER TO FIND A CONDITION TO REDUCE POSSIBILITY OF ASPHALTENE PRECIPITATION.

 
Keyword(s): ASPHALTENE PRECIPITATION, RESERVOIRS, PIPELINES, SOLID MODEL, PRESSURE EFFECTS, TEMPERATURE EFFECTS
 
 
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