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1. 发明授权

US07401665B2 Apparatus and method for drilling a branch borehole from an oil well 失效
标题翻译：从油井钻分支井的装置和方法
公开(公告)号：US07401665B2
公开(公告)日：2008-07-22
申请号：US10931332
申请日：2004-09-01
申请人： Julio C. Guerrero , Demos Pafitis , Alex Arzoumanidis
发明人： Julio C. Guerrero , Demos Pafitis , Alex Arzoumanidis
IPC分类号： E21B23/00
CPC分类号： E21B21/00 , E21B7/06 , E21B29/06 , E21B2023/008
摘要： A wireline drill train is used to drill an elongated, small diameter, lateral branch borehole from near the base of a main well. The drill train, includes a drill module, a first self-propelled thrust module coupled to the drill module, and a second self-propelled thrust module pivotally coupled to the first self-propelled thrust module. Each thrust module includes at least two extendible thrusters. Each extendible thruster includes a six-bar mechanism and a traction tread. The drill train further includes a first articulated linkage linking the first self-propelled thrust module to the drill module, and a second articulated linkage linking the second thrust module to the first thrust module. The second articulated linkage includes a thrust-transmission bar and three retractable stiffener bars. The method for drilling the curved transition region of the lateral branch borehole includes executing a series of alternating pivotal drilling steps and forward drilling steps to create a step-cut region of branch borehole having very small radius of curvature.
摘要翻译：使用有线钻杆从主井底部钻出细长的，小直径的侧向分支钻孔。所述钻机组包括钻模组件，联接到所述钻模组件的第一自推进推力模块和枢转地联接到所述第一自推进推力模块的第二自推进推力模块。每个推力模块包括至少两个可延伸的推进器。每个可延伸推进器包括六杆机构和牵引踏板。钻机还包括将第一自推进推力模块连接到钻头模块的第一铰接连杆和将第二推力模块连接到第一推力模块的第二铰接连杆。第二铰接连杆机构包括推力传动杆和三个伸缩加强筋。用于钻出横向分支钻孔的弯曲过渡区域的方法包括执行一系列交替的枢转钻孔步骤和向前钻孔步骤以创建具有非常小的曲率半径的分支钻孔的阶梯切割区域。

2. 发明申请

US20060042835A1 Apparatus and method for drilling a branch borehole from an oil well 失效
标题翻译：从油井钻分支井的装置和方法
公开(公告)号：US20060042835A1
公开(公告)日：2006-03-02
申请号：US10931332
申请日：2004-09-01
申请人： Julio Guerrero , Demos Pafitis , Alex Arzoumanidis
发明人： Julio Guerrero , Demos Pafitis , Alex Arzoumanidis
IPC分类号： E21B7/04
CPC分类号： E21B21/00 , E21B7/06 , E21B29/06 , E21B2023/008
摘要： A wireline drill train is used to drill an elongated, small diameter, lateral branch borehole from near the base of a main well. The drill train, includes a drill module, a first self-propelled thrust module coupled to the drill module, and a second self-propelled thrust module pivotally coupled to the first self-propelled thrust module. Each thrust module includes at least two extendible thrusters. Each extendible thruster includes a six-bar mechanism and a traction tread. The drill train further includes a first articulated linkage linking the first self-propelled thrust module to the drill module, and a second articulated linkage linking the second thrust module to the first thrust module. The second articulated linkage includes a thrust-transmission bar and three retractable stiffener bars. The method for drilling the curved transition region of the lateral branch borehole includes executing a series of alternating pivotal drilling steps and forward drilling steps to create a step-cut region of branch borehole having very small radius of curvature.
摘要翻译：使用有线钻杆从主井底部钻出细长的小直径的侧向分支钻孔。所述钻机组包括钻模组件，联接到所述钻模组件的第一自推进推力模块和枢转地联接到所述第一自推进推力模块的第二自推进推力模块。每个推力模块包括至少两个可延伸的推进器。每个可延伸推进器包括六杆机构和牵引踏板。钻机还包括将第一自推进推力模块连接到钻头模块的第一铰接连杆和将第二推力模块连接到第一推力模块的第二铰接连杆。第二铰接连杆机构包括推力传动杆和三个伸缩加强筋。用于钻出横向分支钻孔的弯曲过渡区域的方法包括执行一系列交替的枢转钻孔步骤和向前钻孔步骤以创建具有非常小的曲率半径的分支钻孔的阶梯切割区域。

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