The invention relates to the field of drilling wells into a subterranean formation for the purpose of extracting or producing minerals contained by said formation. The invention specifically relates to drilling fluids used in such methods to form filter cakes for providing a sealing layer on the walls of boreholes formed by the drilling. A new bridging agent for use in such drilling fluids has been found, which has the great advantage that a good sealing filter cake is produced, which filter cake can be removed under very mild conditions.
申请公布号
WO03035793(A1)
申请公布日期
2003.05.01
申请号
WO2002NL00665
申请日期
2002.10.21
申请人
COOEPERATIEVE VERKOOP- EN PRODUCTIEVERENIGING VAN AARDAPPELMEEL EN DERIVATEN AVEBE B.A.;SIMONIDES, HYLKE, HOTZE;STAAL, MARTINUS;HOPMAN, JOHANNES, CORNELIS, PETRUS
发明人
SIMONIDES, HYLKE, HOTZE;STAAL, MARTINUS;HOPMAN, JOHANNES, CORNELIS, PETRUS