Method of inhibiting asphalt precipitation in an oil production

Details Method of inhibiting asphalt precipitation in an oil production Method of inhibiting asphalt precipitation in an oil production

1990-09-05

1992-08-18

Suchfield, George A.

Wells

Processes

Separating material entering well

166279, 166310, 166371, E21B 3706, E21B 4340

Patent

active

051390884

ABSTRACT:
Asphalt precipitation in the flow path of an oil production well is inhibited by splitting the produced crude oil in a separator train into a light fraction containing gaseous and oil components having a relatively low aromaticity and molar weight and a heavy fraction having a relatively high aromaticity and molar weight and subsequently reinjecting at least part of the heavy fraction to a location in the flow path of the well where asphalt precipitation is expected to occur.

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"High-Pour-Point and Asphaltic Drude Oils and Condensates," Robert N. Tuttle, Journal of Petroleum Technology, pp. 1192-1196, Jun. 1983.
SPE 18892, "Asphaltene Deposition: A Comprehensive Description of Problem Manifestations and Modeling Approaches," K. J. Leontaritis, Production Operations Symposium, Mar. 12-14, 1989, Oklahoma City.

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