QUATERNARY NITROGEN CONTAINING AMPHOTERIC WATER SOLUBLE POLYMERS AND THEIR USE IN DRILLING FLUIDS
摘要
The present invention generally relates to water based drilling fluid compositions which contain at least one viscosity builder and at least one rheological control agent wherein said rheological control agent is an amphoteric polymer, the cationic groups of said amphoteric polymer being quaternary ammonium groups.
申请公布号
WO0060023(A2)
申请公布日期
2000.10.12
申请号
WO2000EP02884
申请日期
2000.03.31
申请人
AKZO NOBEL N.V.;WARREN, BRENT;VAN DER HORST, PETER, M.;VAN 'T ZELFDE, THEODORUS, A.
发明人
WARREN, BRENT;VAN DER HORST, PETER, M.;VAN 'T ZELFDE, THEODORUS, A.
