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1. 发明授权

US5775803A Automatic cementing system with improved density control 失效
标题翻译：自动固井系统具有改进的密度控制
公开(公告)号：US5775803A
公开(公告)日：1998-07-07
申请号：US791936
申请日：1997-01-31
申请人： Clifford Stanley Montgomery , Michael P. Dearing, Sr. , Bruce A. Vicknair , Randall R. Price , Robert A. Baten , Greg L. Cedillo , John Howard Craig
发明人： Clifford Stanley Montgomery , Michael P. Dearing, Sr. , Bruce A. Vicknair , Randall R. Price , Robert A. Baten , Greg L. Cedillo , John Howard Craig
IPC分类号： B01F15/04
CPC分类号： B01F3/1271 , B01F13/103 , B01F15/00136 , B01F15/00155 , B01F15/00233 , B01F15/0234 , B01F15/042 , B01F15/0429 , B01F3/1221 , B01F5/106 , B28C7/024 , B28C7/0418 , B28C7/044 , B28C7/0454 , G05D21/02 , B01F2215/0047
摘要： An automatic cementing system and method are disclosed for precisely controlling the density of a slurry during a continuously mixed cement application. The system includes an input water line and a dry cement hopper for supplying water and cement, respectively, to a mixing chamber. The mixing chamber includes two chambers, Chamber A and Chamber B, for thoroughly mixing the water and cement together to form a cement slurry. Chamber B includes a level sensor for measuring the change in slurry level. The input line includes a pump for supplying the water to the mixing chamber, and a flow meter for measuring the rate at which the water is supplied. Similarly, the hopper includes a slide-gate valve for regulating the rate at which the dry cement is supplied to the mixing chamber. A discharge line with a discharge pump and a discharge flow meter receives and discharges cement slurry. A recirculation line is included for density control during initialization. A system controller receives operational parameters from the operator, including desired slurry density, mix water density, and dry cement density. As the slurry discharge rate increases to the desired value, the mix water flow rate increases to maintain the calculated volume percentage of mix water in the discharge slurry constant. The tub level drops, causing the slide-gate valve to open and add cement, raising the tub level to the setpoint level and maintaining an accurate discharge slurry density.
摘要翻译：公开了一种用于在连续混合的水泥应用中精确控制浆料的密度的自动固井系统和方法。该系统包括输入水线和用于将水和水泥分别供应到混合室的干燥水泥料斗。混合室包括两个室，室A和室B，用于将水和水泥充分混合在一起以形成水泥浆。室B包括用于测量浆料水平变化的液位传感器。输入线包括用于将水供应到混合室的泵和用于测量供应水的速率的流量计。类似地，料斗包括用于调节干混泥浆供应到混合室的速率的滑动闸阀。具有排放泵和排放流量计的排放管接收和排出水泥浆。在初始化期间，包括再循环管线用于密度控制。系统控制器从操作者接收操作参数，包括所需浆料密度，混合水密度和干燥水泥密度。当浆料排出速率增加到期望值时，混合水流量增加以保持排出浆料中混合水的计算体积百分比恒定。浴缸水平下降，导致滑闸阀打开并添加水泥，将浴缸水平提高到设定值，并保持准确的排出浆料密度。

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