Methods and compositions for thermal insulation

Details Methods and compositions for thermal insulation Methods and compositions for thermal insulation

2011-04-12

2011-04-12

Gulakowski, Randy (Department: 1766)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S236000, C507S239000, C166S302000

Reexamination Certificate

active

07923419

ABSTRACT:
Unwanted heat loss from production tubing or uncontrolled heat transfer to outer annuli is inhibited by introduction into the annuli a thermal insulating packer fluid or a riser fluid containing a zwitterionic surfactant, an alcohol and a brine. The viscosity of the composition is sufficient to reduce the convection flow velocity within the annulus. The invention has particular applicability with high density brines.

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Schlumberger glossary pictorial of a mechanical packer.
Javora, P.H., et al., “Water-Based Insulating Fluids for Deep-Water Riser Applications,” Oct. 2004, SPE 88547, Society of Petroleum Engineers, Inc., USA.
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