发明授权
- 专利标题: Blended drilling fluid thinner
- 专利标题(中): 混合钻井液更薄
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申请号: US976818申请日: 1992-11-16
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公开(公告)号: US5399548A公开(公告)日: 1995-03-21
- 发明人: Bharat B. Patel
- 申请人: Bharat B. Patel
- 申请人地址: OK Bartlesville
- 专利权人: Phillips Petroleum Company
- 当前专利权人: Phillips Petroleum Company
- 当前专利权人地址: OK Bartlesville
- 主分类号: C09K8/03
- IPC分类号: C09K8/03 ; C09K8/12 ; C09K8/24 ; E21B21/00 ; C09K7/02 ; E21B43/16
摘要:
A blended additive composition, which is useful for thinning aqueous drilling fluids, is disclosed. The composition includes a first component selected from the group including: a modified tannin, a modified lignite and sodium lignosulfonate; a second component being a polymer prepared from acrylic acid; and a third component being a metal compound selected from the group of metals including iron, tin, chromium, manganese, titanium, aluminum and zinc.
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