公开(公告)号：US20090251331A1

公开(公告)日：2009-10-08

申请号：US12416218

申请日：2009-04-01

申请人： Ingolf Wassermann ,  John D. Macpherson

发明人： Ingolf Wassermann ,  John D. Macpherson

IPC分类号： G01V3/00

CPC分类号： G01V11/002 ,  E21B47/10 ,  E21B47/18

摘要： A system for optimizing a mud-pulse telemetry system, the system including: a plurality of sensors distributed along a drill string adapted for being disposed in a borehole, each sensor configured to perform a measurement of a characteristic of at least one of mud in a column within the borehole and a mud-pulse telemetry signal propagating in the mud; and a processing unit for receiving the measurements, the processing unit comprising an algorithm to compile a data set from the measurements and to determine a parameter of the mud-pulse telemetry system using the data set to optimize the mud-pulse telemetry system. A method and a computer program product are also provided.

摘要翻译： 一种用于优化泥浆脉冲遥测系统的系统，所述系统包括：沿着适于被布置在钻孔中的钻柱分布的多个传感器，每个传感器被配置为执行至少一个泥浆的特性的测量 钻井内的柱和在泥浆中传播的泥浆脉冲遥测信号; 以及用于接收测量的处理单元，所述处理单元包括从所述测量中编译数据集的算法，并且使用所述数据集来确定泥浆脉冲遥测系统的参数以优化所述泥浆脉冲遥测系统。 还提供了一种方法和计算机程序产品。

公开(公告)号：US20090200079A1

公开(公告)日：2009-08-13

申请号：US12028913

申请日：2008-02-11

申请人： Ralf Zaeper ,  John D. Macpherson

发明人： Ralf Zaeper ,  John D. Macpherson

IPC分类号： E21B21/08

CPC分类号： E21B47/08 ,  E21B21/08

摘要： Disclosed herein is a method of detecting a downhole washout. The method includes, positioning a plurality of sensors along a downhole drillstring, communicatively coupling the plurality of sensors to a processor, and analyzing data sensed by the plurality of sensors with the processor for relationships indicative of a washout.

摘要翻译： 本文公开了一种检测井下冲洗的方法。 该方法包括：沿着井下钻柱定位多个传感器，将多个传感器通信地耦合到处理器，并且利用处理器分析由多个传感器感测的数据，以指示冲洗的关系。

公开(公告)号：US07172037B2

公开(公告)日：2007-02-06

申请号：US10814918

申请日：2004-03-31

申请人： Dmitriy Dashevskiy ,  John D. Macpherson ,  Vladimir Dubinsky ,  Pat McGinley

发明人： Dmitriy Dashevskiy ,  John D. Macpherson ,  Vladimir Dubinsky ,  Pat McGinley

IPC分类号： E21B25/16 ,  E21B19/08

CPC分类号： E21B44/00 ,  E21B2041/0028

摘要： A drilling control system provides, in one aspect, advisory actions for optimal drilling. Such a system or model utilizes downhole dynamics data and surface drilling parameters, to produce drilling models used to provide to a human operator with recommended drilling parameters for optimized performance. In another aspect, the output of the drilling control system is directly linked with rig instrumentation systems so as to provide a closed-loop automated drilling control system that optimizes drilling while taking into account the downhole dynamic behavior and surface parameters. The drilling models can be either static or dynamic. In one embodiment, the simulation of the drilling process uses neural networks to estimate some nonlinear function using the examples of input-output relations produced by the drilling process.

摘要翻译： 钻井控制系统在一个方面提供了用于最佳钻井的咨询动作。 这种系统或模型利用井下动力学数据和表面钻井参数，以产生用于向人类操作者提供用于优化性能的推荐钻孔参数的钻孔模型。 在另一方面，钻井控制系统的输出与钻机仪表系统直接相连，以便提供一种闭环自动钻井控制系统，其优化钻井同时考虑到井下动态特性和表面参数。 钻孔模型可以是静态的或动态的。 在一个实施例中，钻井过程的模拟使用神经网络来估计一些非线性函数，使用钻井过程产生的输入 - 输出关系的例子。

公开(公告)号：US5321981A

公开(公告)日：1994-06-21

申请号：US12274

申请日：1993-02-01

申请人： John D. Macpherson

发明人： John D. Macpherson

IPC分类号： E21B47/00

CPC分类号： E21B47/0006

摘要： Torsional oscillations of the drillstring will lead to frequency modulation (FM) of the signal from a vibratory source (e.g., the bit). This results, in the frequency domain, in sidebands being present around a detected excitation frequency. In accordance with the present invention, it has been discovered that these sidebands may be used in advantageous methods for optimizing drillstring and drilling performance. In a first embodiment of this invention, these sidebands are used to discriminate between downhole and surface vibrational sources. Once the location of the drillstring vibration is determined, appropriate action may be taken to optimize drilling and drillstring performance. In a second embodiment of this invention, the sidebands are used to determine the rotary speed of BHA (bottom hole assembly) components. Using the method of this second embodiment, minimum and maximum rotary speeds of a given BHA component is determined as a function of the excitation frequency, the frequency of torsional oscillation and the modulation index. Once the minimum and maximum rotary speeds of the BHA components are determined, adjustments can be made to alter the rotary speeds and thereby enhance or optimize drilling and drillstring performance. This method is particularly well suited for use in those applications where torsional oscillations are not recognizable in the time domain, but are better recognized in the frequency domain.

摘要翻译： 钻柱的扭转振荡将导致来自振动源（例如，位）的信号的频率调制（FM）。 这导致在频域中，边带围绕检测到的激励频率存在。 根据本发明，已经发现，这些边带可以用于优化钻柱和钻井性能的有利方法。 在本发明的第一实施例中，这些边带用于区分井下和表面振动源。 一旦确定了钻柱振动的位置，可以采取适当的动作来优化钻井和钻柱性能。 在本发明的第二实施例中，边带用于确定BHA（底部孔组件）部件的转速。 使用该第二实施例的方法，确定给定BHA分量的最小和最大转速作为激励频率，扭转振荡频率和调制指数的函数。 一旦确定了BHA部件的最小和最大转速，就可进行调整以改变转速，从而提高或优化钻井和钻柱性能。 该方法特别适用于在时域中不能识别扭转振荡但在频域中更好地识别扭转振荡的应用。