发明授权
- 专利标题: Methods for evaluating cuttings density while drilling
- 专利标题(中): 钻井时切屑密度的评估方法
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申请号: US13585562申请日: 2012-08-14
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公开(公告)号: US09228430B2公开(公告)日: 2016-01-05
- 发明人: John Rasmus , William Lesso , John James , Edward M. Tollefsen , Scott Paul , Amanda L. Weber , Marcus Turner
- 申请人: John Rasmus , William Lesso , John James , Edward M. Tollefsen , Scott Paul , Amanda L. Weber , Marcus Turner
- 申请人地址: US TX Sugar Land
- 专利权人: Schlumberger Technology Corporation
- 当前专利权人: Schlumberger Technology Corporation
- 当前专利权人地址: US TX Sugar Land
- 代理商 Chadwick A. Sullivan; Wesley Noah
- 主分类号: E21B47/10
- IPC分类号: E21B47/10 ; E21B47/06 ; E21B49/00
摘要:
A method evaluating a cuttings density while drilling a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval density may be measured while drilling and may be further processed to compute a cuttings density in the annulus. Moreover, changes in the computed interval density with time while drilling may be used as an indicator of a change in cuttings density.
公开/授权文献
- US20130054146A1 METHODS FOR EVALUATING CUTTINGS DENSITY WHILE DRILLING 公开/授权日:2013-02-28