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1.发明公开Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk 审中-公开方法和系统的设计和/或选择使用预测为Drehbohrmeisselabweichung钻探设备
公开(公告)号：EP2281996A2
公开(公告)日：2011-02-09
申请号：EP10187101.0
申请日：2006-08-07
发明人： Chen, Shilin
摘要： A method to design a rotary drill bit with a desired bit walk rate comprises the following steps:
(a) determining the drilling conditions and the formation characteristics to be drilled by the rotary drill bit;
(b) simulating drilling of at least one portion of a wellbore using the drilling conditions;
(c) calculating (886b) a bit walk rate by using walk force, bit tilt or tilt rate, and steer force, or by using walk moment, bit tilt or tilt rate, and steer moment;
(d) comparing (888b) the calculated bit walk rate to the desired bit walk rate;
(e) if the calculated bit walk rate does not approximately equal the desired bit walk rate, modifying at least one bit geometry of the rotary drill bit selected from the group consisting of bit profile, cutter location, cutter orientation, cutter density, gauge length, and gage diameter; and
(f) repeating steps (a) through (e) until the calculated bit walk rate approximately equals the desired bit walk rate.摘要翻译： 设计具有期望的比特率步行旋转钻头的方法，包括以下步骤：（a）确定的采矿钻探条件和形成特性由旋转钻头进行钻孔; （B）模拟使用钻探条件的井筒中的至少一个部分的钻孔; （C）计算（886b）通过使用步行力，钻头倾斜或倾斜速率，并且转向力的比特率的步行，或者通过使用行走的时刻，钻头倾斜或倾斜速率，和转向力矩; （D）进行比较（888B）所计算的比特率步行到所需的位速率的步行; （E）如果所计算的比特的步行率不期望的位步行率大致相等，修饰选自下组的位分布，刀的位置，切割器取向，切削件密度，标距长度的选择的旋转钻头的至少一个比特的几何形状 和仪器的直径; 和（f）的（a）至（e）直到所计算的比特率步行大约等于所要求的位速率步行重复步骤。
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公开(公告)号：EP1498573A3
公开(公告)日：2006-05-24
申请号：EP04025233.0
申请日：1999-08-31
发明人： Chen, Shilin
摘要： Disclosed herein is a method for designing a roller cone drill bit, comprising simulating the bit drilling through an earth formation wherein the simulating comprises determining an axial force on a cutting element, based on a means for determining an axial force, determining an axial force on the roller cones, based on the axial forces on the cutting elements, and angularly rotating the bit; adjusting at least one design parameter of the bit; repeating the simulating the bit drilling; and comparing a distribution of axial forces among the roller cones prior to the adjusting the at least one design parameter with a distribution of axial forces among the roller cones after adjusting the at least one design parameter.
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公开(公告)号：EP1500783A3
公开(公告)日：2006-04-12
申请号：EP04025562.2
申请日：1999-08-31
发明人： Chen, Shilin
摘要： Disclosed herein is a method of designing a roller cone bit, comprising the steps of:
Calculating the trajectory of at least one tooth on each cone through formation material at the cutting face; and
Jointing optimising both the orientations of said teeth and the width of uncut rings on said cutting face, in dependence on said trajectory.-
4.发明公开
公开(公告)号：EP1498575A2
公开(公告)日：2005-01-19
申请号：EP04025235.5
申请日：1999-08-31
发明人： Chen, Shilin
摘要： Disclosed herein is a method for designing a roller cone drill bit having a plurality of roller cones and initial design parameters, comprising: simulating drilling an earth formation with the bit and determining as a result of the simulating, a drilling parameter of the bit; adjusting at least one of the initial design parameters; repeating the simulating drilling; and repeating the adjusting, the simulating and the determining until the drilling parameter is optimised.
摘要翻译： 本文公开了一种用于设计具有多个滚子锥体和初始设计参数的滚子锥形钻头的方法，包括：模拟钻头与钻头的钻孔并确定钻头的钻孔参数的结果; 调整至少一个初始设计参数; 重复模拟钻井; 并重复调整，模拟和确定，直到钻孔参数被优化为止。
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5.发明公开Force-balanced roller-cone bits, systems, drilling methods, and design methods 审中-公开Kraftmässigausgeglichene Rollenmeissel，Systeme，Bohrverfahren und entsprechende Konstruktionsmethoden
公开(公告)号：EP1389666A2
公开(公告)日：2004-02-18
申请号：EP03021140.3
申请日：1999-08-31
发明人： Chen, Shilin
IPC分类号： E21B10/16
摘要： A method of designing a roller cone drill bit is disclosed. The method comprises:
(a) calculating the force balance conditions of a bit;
(b) defining design variables;
(c) determine lower and upper bounds for the design variables;
(d) defining objective functions;
(e) defining constraint functions;
(f) performing an optimisation means; and
(g) evaluating an optimised cutting structure by modelling.摘要翻译： 公开了一种设计辊锥钻头的方法。 该方法包括：（a）计算一个位的力平衡条件; （b）定义设计变量; （c）确定设计变量的下限和上限; （d）界定目标职能; （e）定义约束函数; （f）执行优化装置; 和（g）通过建模评估优化的切割结构。
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6.发明公开Multilevel force balanced downhole drilling tools and methods 审中-公开Mehrstufige kraftausgeglichene Bohrlochwerkzeuge和Verfahren
公开(公告)号：EP2706186A2
公开(公告)日：2014-03-12
申请号：EP13174280.1
申请日：2009-12-09
发明人： Chen, Shilin
CPC分类号： G06F17/5086 , E21B10/43 , E21B10/55 , G06F17/5009
摘要： In a downhole drilling tool (100) designed to form a wellbore (30), cutting elements (60) are disposed at respective locations on exterior portions of each of a plurality of blades (131) based at least in part on a level of force balancing resulting in a cutting face profile and force balancing each respective group of three neighbor cutting elements (60) on the cutting face profile to further minimize imbalance forces associated with each respective group of three neighbor elements acting on the downhole drilling tool.
A method of designing a downhole drilling tool is also disclosed.摘要翻译： 在设计成形成井筒（30）的井下钻井工具（100）中，切割元件（60）至少部分地基于力的水平设置在多个叶片（131）中的每一个的外部的相应位置 平衡导致切割面轮廓和力平衡切割面轮廓上的每个相应组的三个相邻切割元件（60），以进一步最小化与作用在井下钻孔工具上的每个相应组的每个相应组的相关联的不平衡力。 还公开了一种设计井下钻具的方法。
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7.发明授权
公开(公告)号：EP1371811B1
公开(公告)日：2011-03-30
申请号：EP03021139.5
申请日：1999-08-31
发明人： Chen, Shilin
IPC分类号： E21B10/16
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8.发明公开Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk 审中-公开的方法和系统用于设计和/或使用钻孔选择Drehbohrgangs的预报
公开(公告)号：EP2258918A2
公开(公告)日：2010-12-08
申请号：EP10163457.4
申请日：2010-05-20
发明人： Chen, Shilin
IPC分类号： E21B10/00
摘要： Methods and systems are disclosed which provide simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material. Values of steer force, bit walk rate and average walk rate from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.
摘要翻译： 方法和系统是游离缺失盘，其提供模拟形成各种各样的定向井孔包含具有可变倾斜速率和/或相对恒定的倾斜率井筒。 该方法和系统因此可以被用来模拟在具有软，中，硬地层材料，形成材料的多个层和设置在整个信息材料的一个或多个层相对硬的纵梁的组合地下地层形成井筒。 的转向力，比特率步行和寻求模拟平均步行率值可以被用于设计和/或在形成定向井眼选择钻井设备以供使用。
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公开(公告)号：EP1500781A3
公开(公告)日：2006-04-12
申请号：EP04025560.6
申请日：1999-08-31
发明人： Chen, Shilin
摘要： Disclosed herein is a method of designing a roller cone bit, comprising the steps of:
calculating the curved trajectory of a non-axisymmetric tooth through formation material at the cutting face, as the bit and cones rotate;
calculating a straight line approximation to said curved trajectory; and
orienting said tooth with respect to said approximation, and not with respect to said curved trajectory.-
10.发明公开Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation 审中-公开牙轮钻头，系统，钻探和施工方法，优化齿方向
公开(公告)号：EP1498572A3
公开(公告)日：2006-04-12
申请号：EP04025232.2
申请日：1999-08-31
发明人： Chen, Shilin
摘要： Disclosed herein is a method for optimising drilling performance of a roller cone drill bit, comprising simulating drilling with the bit in a selected earth formation to determine at least one drilling performance parameter, adjusting, an orientation of at least one non-axisymmetric cutting element on the bit, repeating the simulating the drilling and determining the at least one performance parameter, and repeating the adjusting and simulating the drilling until the at least one performance parameter is determined to be at an optimum value.
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