发明申请
US20050037927A1 Drilling Fluids, Drilling Fluids Additives and Methods Useful for Limiting Tar Sands Accretion on Metal Surfaces
审中-公开
钻井液，钻井液添加剂和有助于限制金属表面上的焦油沙量的方法
- 专利标题： Drilling Fluids, Drilling Fluids Additives and Methods Useful for Limiting Tar Sands Accretion on Metal Surfaces
- 专利标题（中）： 钻井液，钻井液添加剂和有助于限制金属表面上的焦油沙量的方法
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申请号： US10604754申请日： 2003-08-14
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公开(公告)号： US20050037927A1公开(公告)日： 2005-02-17
- 发明人: David Horton
- 申请人： David Horton
- 主分类号： C09K8/12
- IPC分类号： C09K8/12 ; C09K8/22 ; E21B21/00 ; C09K7/02
摘要：
Fluids useful in oil well drilling operations are described. The fluids comprise standard viscosifying and fluid loss control additives along with phosphonates or phosphate esters of organic ligands. The addition of the phosphonates or phosphate esters at effective concentrations prevents the adherence of heavy oil and heavy oil laden drill cuttings to drill pipe strings and well bore casings.
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