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    • 2. 发明授权
    • Cement slurry monitoring
    • 水泥浆监测
    • US08636063B2
    • 2014-01-28
    • US13028542
    • 2011-02-16
    • Kris RaviEtienne SamsonJohn L. MaidaWilliam John Hunter
    • Kris RaviEtienne SamsonJohn L. MaidaWilliam John Hunter
    • E21B33/13
    • E21B47/0005E21B33/14E21B47/123
    • Various disclosed cement slurry monitoring methods include monitoring one or more parameter of the cement slurry at various positions along the borehole during the curing process and responsively identifying a span over which the slurry extends and whether there are any gaps or voids in that span. At least some system embodiments include a distributed sensing arrangement to provide parameter measurements as a function of position and time during the curing process. A computer analyzes the measurements to determine the span of the cement slurry and whether any gaps exist. Contemplated measurement parameters include temperature, pressure, strain, acoustic spectrum, acoustic coupling, and chemical concentration. Individually or in combination, these measurements can reveal in real time the state of the cement slurry and can enable remedial actions to be taken during or after the curing process if needed to address deficiencies in the annular seal being provided by the cement.
    • 各种公开的水泥泥浆监测方法包括在固化过程期间监测沿着钻孔的各个位置处的水泥浆的一个或多个参数,以及响应地确定浆料延伸的跨度以及在该跨度中是否存在间隙或空隙。 至少一些系统实施例包括分布式感测装置,以在固化过程中提供作为位置和时间的函数的参数测量。 计算机分析测量结果以确定水泥浆的跨度以及是否存在任何间隙。 考虑的测量参数包括温度,压力,应变,声谱,声耦合和化学浓度。 单独或组合地,这些测量可以实时地显示水泥浆的状态,并且如果需要解决由水泥提供的环形密封件的缺陷,可以在固化过程中或之后采取补救措施。