SOLID REAGENT FOR PREVENTING ASPHALTENE-TAR-PARAFFIN DEPOSITS DURING PRODUCTION AND TRANSPORTATION OF CRUDE OIL Russian patent published in 2004 - IPC

Abstract RU 2237799 C2

FIELD: oil and gas production.

SUBSTANCE: solid reagent contains, wt %: industrial-grade lignosulfonates (liquid or powdered) 3.0-15.0, carboxymethylcellulose 12.5-50.0, industrial detergent 30.0-50.0, urea 2.0-15.0, and water - the balance. Reagent is characterized by increased activation rate with different types of oil both at normal and elevated temperatures while simultaneously being capable of providing smooth withdrawal, durable stability, workability, and environmental safety of reagent.

EFFECT: improved performance characteristics.

2 cl, 5 tbl

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RU 2 237 799 C2

Authors

Runets S.A.

Belousova N.V.

Fofanov B.V.

Derbeneva S.V.

Dates

2004-10-10—Published

2002-07-29—Filed