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公开(公告)号：US3718585A
公开(公告)日：1973-02-27
申请号：US3718585D
申请日：1971-08-02
Applicant: AMOCO PROD CO
Inventor： LUMMUS J , ANDERSON D , EDWARDS C
CPC classification number: C09K8/22 , Y10S507/904
Abstract: THE ACTION OF AN AGENT FOR CASING SOLID PARTICLES OF ASPHALT TO ENTER INTO AND FORM A STABLE SUSPENSION IN WATER-BASE DRILLING FLUID IS IMPROVED BY PREHYDRATING THE AGENT AND DISSOLVING THE PREHYDRATED AGENT IN NORMAL PROPANOL AND WATER BEFORE USE. THE ASPHALT-STABILIZING AGENT MAY BE A LIMITD CLASS OF ETHOXYALTED ALKYL PHENOLS OR ETHOXYLATED POLYPROPYLENE GLYCOLS. THE MONOBUTYL ETHER OF ETHYLENE GLYCOL OR OF DIETHYLENE GLYCOL CAN BE SUED IN PLACE OF NORMAL PROPANOL.
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