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    • 2. 发明授权
    • Annulus pressure setpoint correction using real time pressure while drilling measurements
    • 环钻压力设定值校正,使用实时压力进行钻孔测量
    • US08240398B2
    • 2012-08-14
    • US13116082
    • 2011-05-26
    • James R. LovornSaad SaeedNancy Davis
    • James R. LovornSaad SaeedNancy Davis
    • E21B21/08
    • E21B21/08E21B21/106E21B2021/006
    • A method of controlling pressure in a wellbore can include determining a real time wellbore pressure PwbRT1 at a pressure sensor in the wellbore, calculating hydrostatic pressure Ph1 at the pressure sensor, determining a real time annulus pressure PaRT, calculating friction pressure Pf due at least to circulation of the fluid through the wellbore and depth in the wellbore, calculating a friction pressure correction factor CFPf1 equal to (PwbRT1−Ph1−PaRT)/Pf, and controlling operation of a pressure control device, based on the friction pressure correction factor CFPf1. The method can further include determining a desired wellbore pressure PwbD1 at the pressure sensor, calculating an annulus pressure setpoint PaSP1 equal to PwbD1−Ph1−(Pf*CFPf1), and adjusting the pressure control device as needed to maintain PaRT equal to PaSP1.
    • 控制井眼中的压力的​​方法可以包括确定在井眼中的压力传感器处的实时井眼压力PwbRT1,计算压力传感器处的静压力Ph1,确定实时环空压力PaRT,计算摩擦压力Pf至少为 流体通过井筒的循环和井眼中的深度,计算等于(PwbRT1-Ph1-PaRT)/ Pf的摩擦压力校正因子CFPf1,并且基于摩擦压力校正因子CFPf1来控制压力控制装置的操作。 该方法还可以包括确定压力传感器处的期望的井眼压力PwbD1,计算等于PwbD1-Ph1-(Pf * CFPf1)的环形压力设定点PaSP1,以及根据需要调节压力控制装置以将PaRT保持等于PaSP1。
    • 3. 发明授权
    • Pressure and flow control in drilling operations
    • 钻井作业中的压力和流量控制
    • US08397836B2
    • 2013-03-19
    • US13492688
    • 2012-06-08
    • Charles M. PoolNancy DavisFrank UriasNeal G. Skinner
    • Charles M. PoolNancy DavisFrank UriasNeal G. Skinner
    • E21B10/22
    • E21B21/08E21B21/10
    • A method of maintaining a desired downhole pressure during a drilling operation can include measuring a parameter with a sensor, communicating actual parameter values from the sensor to a predictive device, training the predictive device to output predicted parameter values in response to input of the actual parameter values, and outputting the predicted parameter values from the predictive device when the predictive device ceases receiving the actual parameter values. A well drilling system can include a predictive device which outputs predicted parameter values in response to input of actual parameter values to the predictive device. The predictive device continues to output the predicted parameter values, even when the predictive device fails to receive valid actual parameter values. Another well drilling system includes a data validator which communicates valid actual parameter values to the predictive device, but does not communicate invalid actual parameter values to the predictive device.
    • 在钻井操作期间维持期望的井下压力的方法可以包括使用传感器测量参数,将来自传感器的实际参数值传达到预测装置,训练预测装置以响应于实际参数的输入来输出预测参数值 值,并且当预测装置停止接收实际参数值时,从预测装置输出预测参数值。 钻井系统可以包括预测装置,其响应于对预测装置的实际参数值的输入而输出预测参数值。 即使预测装置未能接收到有效的实际参数值,预测装置继续输出预测的参数值。 另一个钻井系统包括数据验证器,其将有效的实际参数值传达给预测装置,但不向预测装置传送无效的实际参数值。
    • 4. 发明授权
    • Pressure and flow control in drilling operations
    • 钻井作业中的压力和流量控制
    • US08286730B2
    • 2012-10-16
    • US13022964
    • 2011-02-08
    • Charles M. PoolNancy DavisFrank UriasNeal G. Skinner
    • Charles M. PoolNancy DavisFrank UriasNeal G. Skinner
    • E21B10/22
    • E21B21/08E21B21/10
    • A method of maintaining a desired downhole pressure during a drilling operation can include measuring a parameter with a sensor, communicating actual parameter values from the sensor to a predictive device, training the predictive device to output predicted parameter values in response to input of the actual parameter values, and outputting the predicted parameter values from the predictive device when the predictive device ceases receiving the actual parameter values. A well drilling system can include a predictive device which outputs predicted parameter values in response to input of actual parameter values to the predictive device. The predictive device continues to output the predicted parameter values, even when the predictive device fails to receive valid actual parameter values. Another well drilling system includes a data validator which communicates valid actual parameter values to the predictive device, but does not communicate invalid actual parameter values to the predictive device.
    • 在钻井操作期间维持期望的井下压力的方法可以包括使用传感器测量参数,将来自传感器的实际参数值传达到预测装置,训练预测装置以响应于实际参数的输入来输出预测参数值 值,并且当预测装置停止接收实际参数值时,从预测装置输出预测参数值。 钻井系统可以包括预测装置,其响应于对预测装置的实际参数值的输入而输出预测参数值。 即使预测装置未能接收到有效的实际参数值,预测装置继续输出预测的参数值。 另一个钻井系统包括数据验证器,其将有效的实际参数值传达给预测装置,但不向预测装置传送无效的实际参数值。
    • 8. 发明申请
    • Gas Supply System
    • 供气系统
    • US20090277454A1
    • 2009-11-12
    • US12115842
    • 2008-05-06
    • Tom DavisNancy Davis
    • Tom DavisNancy Davis
    • A61M16/00
    • B65H75/48A61M16/0672A61M16/0875A61M2202/0208A61M2209/082B65H75/38B65H75/4463B65H75/4471B65H2701/33Y10T137/6851Y10T137/6936Y10T137/6943Y10T137/6954
    • A gas supply system is disclosed. The gas supply system includes a housing, a spool, a gas tube, at least one opening, a retract mechanism and a holding member. The spool is configured within the housing. The gas tube is retractably wound on the spool and includes a first end portion and a second end portion capable of being connected to a gas supply and a nasal cannula respectively. The at least one opening is configured on the housing for enabling at least one of the first end portion and the second end portion of the gas tube to extend out of the housing. The retract mechanism is configured in the housing and is capable of retracting a portion of the gas tube extended out of the housing. The holding member extends from the housing and enables the gas supply system to be removably mounted on a supporting member.
    • 公开了一种供气系统。 气体供给系统包括壳体,阀芯,气体管,至少一个开口,缩回机构和保持构件。 阀芯配置在外壳内。 气体管可收缩地卷绕在线轴上,并且包括能够分别连接到气体供应器和鼻插管的第一端部部分和第二端部部分。 所述至少一个开口构造在所述壳体上,以使得所述气体管的所述第一端部部分和所述第二端部中的至少一个能够延伸出所述壳体。 缩回机构构造在壳体中并且能够缩回从壳体延伸出的气体管的一部分。 保持构件从壳体延伸并且使气体供应系统可拆卸地安装在支撑构件上。