C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/26
C09K 8/20 (2006.01)
Patent
CA 1261132
DRILLING FLUID ADDITIVE CONTAINING HIGH PYRUVATE XANTHAN Abstract A drilling fluid additive comprises high pyruvate xanthan and locust bean gum in a weight ratio of about 40:60 to 80:20. The additive increases the viscosity of the drilling fluid at low shear, has improved thermal stability, and increases the capacity of the fluid to suspend high density weighting materials.
510432
Miller James W.
O'neill John J.
Pfizer Inc.
Smart & Biggar
LandOfFree
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