Low-viscosity drag reducer

Details Low-viscosity drag reducer Low-viscosity drag reducer

2005-09-30

2009-10-06

Choi, Ling-Siu (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S124300, C526S125100, C526S142000, C508S591000, C523S175000

Reexamination Certificate

active

07598333

ABSTRACT:
Low-viscosity drag reducers, systems for delivering low-viscosity drag reducers, and methods of making low-viscosity drag reducers are disclosed. The low-viscosity drag reducers have a viscosity less than 350 cP at a shear rate of 250 sec−1and a temperature of 60° F. This low-viscosity allows the drag reducers to be delivered through a long and relatively small diameter conduit of a subsea umbilical line without an unacceptable level of pressure drop or plugging of the conduit. The low-viscosity drag reducers can be delivered to a subsea flowline carrying fluids produced from a subterranean formation to thereby provide significant drag reduction in the flowline.

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