دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

valence state +3 iron in solution. A very common catalyst in oil field emulsion and sludge formation. Precipitates at iron hydroxide when the pH exceeds 1.8 to 2.2 (depending on sour conditions).

a brown, gelatinous precipitate that comes out of a spent acid solution when the acid spends completely or when the Ferrous Iron (+2) in solution at pH > 1.8 oxidizes to Ferric iron (+3).

n: 1. a tarlike substance that is formed when oil oxidizes. 2. a highly viscous mixture of oil, water, sediment, and residue.

n: The silt and warp deposited in the tank bottom.




a very viscous, usually solids stabilized emulsion. Often triggered by ferric iron and an asphaltenic oil after an acid job.