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1.发明申请SYSTEM AND METHOD FOR DETERMING SOIL CHARACTERISTICS AND DRILLING INSTABILITY DURING HORIZONTAL DIRECTIONAL DRILLING 有权用于确定水平方向钻井过程中土壤特性和钻井不稳定性的系统和方法公开(公告)号：US20160108726A1
公开(公告)日：2016-04-21
申请号：US14921556
申请日：2015-10-23
Applicant: Raytheon Company
Inventor： Benjamin P. Dolgin , William G. Suliga , Thomas G Pepin , John T. Ishibashi , Michael A. Toreno , James A. Nalasco
CPC classification number: E21B49/003 , E21B7/046 , E21B7/06 , E21B7/062 , E21B44/00 , E21B47/024 , E21B47/09 , G01V11/002
Abstract: Disclosed is a system and method for horizontal directional drilling (HDD). The system and method utilize predictive algorithms to both characterize the soil within the borehole and to quantify instability within the drillstring. The soil characteristics are represented by a soil coefficient (α) which relates the curvature of the borehole with the length of thrust of the drill rig as well as by comparison of thrust while thrusting with torque while drilling. The value of (α) is obtained by comparison of the historical orientation of the drilling head over the length of the borehole and the borehole shape as determined by an arbitrary navigation sensor. Drillstring instability is determined as a function of historical thrust and torque efficiencies and windup over the length of the borehole.
Abstract translation: 公开了一种用于水平定向钻井（HDD）的系统和方法。 该系统和方法利用预测算法来表征井眼内的土壤并量化钻柱内的不稳定性。 土壤特征由土壤系数（α）表示，其将钻孔的曲率与钻机的推力长度相关联，以及通过在钻孔时用推力与推力进行比较。 （α）的值通过比较钻头长度与钻孔长度的历史取向和由任意导航传感器确定的钻孔形状来获得。 钻柱不稳定性被确定为历史推力和扭矩效率的函数，并且在钻孔的长度上卷起。
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2.发明授权System and method for determining soil characteristics and drilling instability during horizontal directional drilling 有权水平定向钻井过程中确定土壤特性和钻井不稳定性的系统和方法公开(公告)号：US09581018B2
公开(公告)日：2017-02-28
申请号：US14921556
申请日：2015-10-23
Applicant: Raytheon Company
Inventor： Benjamin P. Dolgin , William G. Suliga , Thomas G Pepin , John T. Ishibashi , Michael A. Toreno , James A. Nalasco
CPC classification number: E21B49/003 , E21B7/046 , E21B7/06 , E21B7/062 , E21B44/00 , E21B47/024 , E21B47/09 , G01V11/002
Abstract: Disclosed is a system and method for horizontal directional drilling (HDD). The system and method utilize predictive algorithms to both characterize the soil within the borehole and to quantify instability within the drillstring. The soil characteristics are represented by a soil coefficient (α) which relates the curvature of the borehole with the length of thrust of the drill rig as well as by comparison of thrust while thrusting with torque while drilling. The value of (α) is obtained by comparison of the historical orientation of the drilling head over the length of the borehole and the borehole shape as determined by an arbitrary navigation sensor. Drillstring instability is determined as a function of historical thrust and torque efficiencies and windup over the length of the borehole.
Abstract translation: 公开了一种用于水平定向钻井（HDD）的系统和方法。 该系统和方法利用预测算法来表征井眼内的土壤并量化钻柱内的不稳定性。 土壤特征由土壤系数（α）表示，其将钻孔的曲率与钻机的推力长度相关联，以及通过在钻孔时用推力与推力进行比较。 （α）的值通过比较钻头长度与钻孔长度的历史取向和由任意导航传感器确定的钻孔形状来获得。 钻柱不稳定性被确定为历史推力和扭矩效率的函数，并且在钻孔的长度上卷起。
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