依法登记的发明
- 专利标题: Drilling fluid
- 专利标题(中): 钻井液
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申请号: US499156申请日: 1995-07-07
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公开(公告)号: USH1685H公开(公告)日: 1997-10-07
- 发明人: Hon Chung Lau , Arthur Herman Hale , Louis Anthony Bernardi, Jr.
- 申请人: Hon Chung Lau , Arthur Herman Hale , Louis Anthony Bernardi, Jr.
- 申请人地址: TX Houston
- 专利权人: Shell Oil Company
- 当前专利权人: Shell Oil Company
- 当前专利权人地址: TX Houston
- 主分类号: C09K8/16
- IPC分类号: C09K8/16 ; C09K8/32 ; C09K7/04
摘要:
Zinc oxide and zirconium oxide are used as weighting materials for water and oil based drilling fluids for horizontal wells.
公开/授权文献
- US4557359A Transmission systems for vehicles 公开/授权日:1985-12-10
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