Cement spacer system for wellbores, methods of making, and methods of use |
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| 申请号 | US14643117 | 申请日 | 2015-03-10 | 公开(公告)号 | US09951261B2 | 公开(公告)日 | 2018-04-24 |
| 申请人 | Scott Gregory Nelson; | 发明人 | Scott Gregory Nelson; | ||||
| 摘要 | A cement spacer fluid for use in a wellbore includes an aqueous cement spacer carrier fluid and a preformed synthetic polymer swellable in the aqueous cement spacer carrier fluid in an amount effective to displace a drilling fluid during a cementing operation. Preferably, the polymer is particulate, and forms a hydrated pack of particles. A method of cementing a wellbore comprising a drilling fluid includes injecting the cement spacer fluid into the wellbore to displace the drilling fluid; injecting a cement slurry into the wellbore subsequent to injecting the cement spacer fluid; and hardening the cement in the slurry to cement the wellbore. | ||||||
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| 说明书全文 | |||||||
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