公开(公告)号：US3872018A

公开(公告)日：1975-03-18

申请号：US30685672

申请日：1972-11-15

Applicant: OIL BASE

Inventor： ALEXANDER ALBERT H D

IPC: C09K8/12 ,  C10M3/16

CPC classification number: C09K8/12

Abstract: Fluid loss control at temperatures over 300* F in clay-free sea water muds of the type containing alkaline earth oxides, hydroxides and salts in a brine solution and using starch as a fluid loss control agent is improved by addition of polyvinyl alcohol with the starch. Urea with the polyvinyl alcohol further increases temperature stability of the systems.

Abstract translation: 在盐水溶液中含有碱土金属氧化物，氢氧化物和盐类的无粘土海水泥浆中，在超过300°F的温度下进行流体损失控制，并使用淀粉作为流体损失控制剂，通过加入聚乙烯醇与淀粉 。 具有聚乙烯醇的尿素进一步提高了系统的温度稳定性。