发明授权
- 专利标题: Low-toxicity invert emulsion fluids for well drilling
- 专利标题(中): 低毒反相乳液用于钻井
-
申请号: US245329申请日: 1994-05-18
-
公开(公告)号: US5470822A公开(公告)日: 1995-11-28
- 发明人: Usama E. Younes
- 申请人: Usama E. Younes
- 申请人地址: DE Greenville
- 专利权人: Arco Chemical Technology, L.P.
- 当前专利权人: Arco Chemical Technology, L.P.
- 当前专利权人地址: DE Greenville
- 主分类号: C09K8/36
- IPC分类号: C09K8/36 ; C09K7/06
摘要:
Low-toxicity invert emulsion fluids for well drilling are disclosed. The fluids comprise a non-hydrocarbon, non-mineral oil continuous phase and a dispersed aqueous phase. The continuous phase materials of the invention pass the 48 hour, LC50 Mysidopsis bahia bioassay test protocol.
公开/授权文献
- US4912298A Method for producing a marking on a spectacle lens 公开/授权日:1990-03-27
信息查询