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    DOWNHOLE ELECTROMAGNETIC AND MUD PULSE TELEMETRY APPARATUS
    41.
    发明申请
    DOWNHOLE ELECTROMAGNETIC AND MUD PULSE TELEMETRY APPARATUS 有权

    公开(公告)号：US20170362934A1

    公开(公告)日：2017-12-21

    申请号：US15674088

    申请日：2017-08-10

    Applicant: EVOLUTION ENGINEERING INC.

    Inventor： David A. SWITZER ,  Jili LIU ,  Aaron W. LOGAN ,  Mingdong XU

    IPC: E21B47/18 ,  E21B47/12

    CPC classification number: E21B47/18 ,  E21B47/12 ,  E21B47/122

    Abstract: A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.

    METHODS AND APPARATUS FOR GENERATING ELECTROMAGNETIC TELEMETRY SIGNALS
    43.
    发明申请
    METHODS AND APPARATUS FOR GENERATING ELECTROMAGNETIC TELEMETRY SIGNALS 有权
    用于生成电磁电报信号的方法和装置

    公开(公告)号：US20160146000A1

    公开(公告)日：2016-05-26

    申请号：US14900063

    申请日：2014-06-20

    Applicant: EVOLUTION ENGINEERING INC.

    Inventor： Aaron W. LOGAN ,  Daniel W. AHMOYE ,  David A. SWITZER ,  Justin C. LOGAN ,  Patrick R. DERKACZ ,  Mojtaba KAZEMI MIRAKI

    IPC: E21B47/12 ,  E21B17/02

    CPC classification number: E21B17/006 ,  E21B17/003 ,  E21B17/028 ,  E21B47/122

    Abstract: An electromagnetic telemetry signal generating assembly comprises a first section of drill string, a second section of drill string, a gap sub configured to insulate the first section from the second section, and a power source configured to provide a first voltage to a control circuit. The control circuit is configured to drive a second voltage between the sections of drill string. The gap sub provides a gap of at least 12 inches (30 cm). The second voltage may be different than the first voltage.

    Abstract translation: 电磁遥测信号发生组件包括钻柱的第一部分，钻柱的第二部分，被配置为将第一部分与第二部分绝缘的间隙子和被配置为向控制电路提供第一电压的电源。 控制电路构造成在钻柱的各段之间驱动第二电压。 间隙sub提供至少12英寸（30厘米）的间隙。 第二电压可以不同于第一电压。

    TELEMETRY SYSTEMS WITH COMPENSATION FOR SIGNAL DEGRADATION AND RELATED METHODS
    44.
    发明申请
    TELEMETRY SYSTEMS WITH COMPENSATION FOR SIGNAL DEGRADATION AND RELATED METHODS 有权
    具有信号降解补偿的电报系统及相关方法

    公开(公告)号：US20160130937A1

    公开(公告)日：2016-05-12

    申请号：US14894366

    申请日：2014-05-30

    Applicant: EVOLUTION ENGINEERING INC.

    Inventor： Aaron W. LOGAN ,  Jili LIU ,  David A. SWITZER

    IPC: E21B47/18

    CPC classification number: E21B47/18

    Abstract: This invention comprises systems, methods and apparatus for mud pulse telemetry involving sending benchmark pulses with known characteristics (such as amplitude or duration) from the surface to the BHA, measuring those characteristics at the BHA, using those measurements to predict the likely attenuation of downhole-to-surface mud pulse transmissions, and adjusting those transmissions to compensate for high attenuation or to obtain energy savings (or transmission rate increases) during low-attenuation conditions. Further refinements on these systems and methods, particularly concerning the use of signal-to-noise ratio measurements at the surface to more efficiently predict attenuation, are also disclosed.

    Abstract translation: 本发明包括用于泥浆脉冲遥测的系统，方法和装置，其包括从表面到BHA发送具有已知特征（例如振幅或持续时间）的基准脉冲，测量BHA处的这些特征，使用这些测量来预测井下可能的衰减 并且在低衰减条件下调整这些传输以补偿高衰减或获得节能（或传输速率增加）。 还公开了对这些系统和方法的进一步改进，特别是关于在表面使用信噪比测量来更有效地预测衰减。

    DOWNHOLE POCKET ELECTRONICS
    45.
    发明申请
    DOWNHOLE POCKET ELECTRONICS 有权
    卧室电子邮件

    公开(公告)号：US20160130932A1

    公开(公告)日：2016-05-12

    申请号：US14894327

    申请日：2014-05-30

    Applicant: EVOLUTION ENGINEERING INC.

    Inventor： Aaron W. LOGAN ,  David A. SWITZER

    IPC: E21B47/01 ,  E21B17/00

    CPC classification number: E21B47/011 ,  E21B17/003

    Abstract: An assembly for use in subsurface drilling includes a drill collar section having a bore extending longitudinally through an inner surface of the drill collar section. A pocket is formed in a section of the inner surface of the drill collar section. A holster is located in the pocket and a sleeve is snuggly fitted inside the bore in order to secure the holster inside the pocket. The sleeve may be sealed to the drill collar section for example by seals such as O-rings such that the holster is sealed from the bore. O-rings may be located on one or both of the inside of the inner surface of the collar or on the outside of the sleeve.

    Abstract translation: 用于地下钻孔的组件包括钻铤部分，其具有纵向穿过钻铤部分的内表面延伸的孔。 在钻铤部分的内表面的一部分中形成袋。 一个皮套位于口袋里，一个套筒紧紧地装在孔内，以便将皮套固定在口袋内。 套筒可以例如通过诸如O形环的密封件密封到钻铤部分，使得机套与孔密封。 O形环可以位于套环的内表面的内部的一个或两个或套筒的外侧上。

    ELECTROMAGNETIC TELEMETRY GAP SUB ASSEMBLY WITH INSULATING COLLAR
    47.
    发明申请
    ELECTROMAGNETIC TELEMETRY GAP SUB ASSEMBLY WITH INSULATING COLLAR 有权
    电磁电缆缝组件与绝缘套管

    公开(公告)号：US20150330155A1

    公开(公告)日：2015-11-19

    申请号：US14443173

    申请日：2013-11-15

    Applicant: EVOLUTION ENGINEERING INC.

    Inventor： Aaron W. LOGAN ,  Daniel W. AHMOYE ,  David A. SWITZER ,  Justin C. LOGAN ,  Patrick R. DERKACZ ,  Mojtaba KAZEMI

    IPC: E21B17/02 ,  F16L25/02 ,  F16L15/08 ,  E21B17/042 ,  E21B17/046

    CPC classification number: E21B17/028 ,  E21B17/003 ,  E21B17/042 ,  E21B17/046 ,  F16L15/08 ,  F16L25/02 ,  F16L25/021 ,  F16L2201/40

    Abstract: An insulating collar for a gap sub assembly for electromagnetic (EM) telemetry used in downhole drilling is disclosed. The gap sub assembly comprises a female member comprising a female mating section and a male member comprising a male mating section and a gap section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. The insulating collar is positioned on the gap section. The collar is made up of a framework with a plurality of discrete bodies spaced about the framework and a portion of each of the discrete bodies protrudes above the framework. Either the framework or the discrete bodies are made of an electrical insulator material to electrically isolate one end of the collar from the other end of the collar. The collar therefore electrically isolates the male member from the female member and the male member, female member and insulating collar function as the “gap sub” for EM telemetry.

    Abstract translation: 公开了一种用于在井下钻井中使用的用于电磁（EM）遥测的间隙子组件的绝缘套环。 间隙子组件包括阴构件，其包括阴配合部分和包括阳配合部分和间隙部分的阳构件。 阳配合部分配合地接纳在阴配合部分内并且与其电绝缘。 绝缘套环位于间隙部分上。 轴环由具有围绕框架间隔开的多个离散体的框架构成，并且每个离散体的一部分在框架上方突出。 框架或离散体由电绝缘材料制成，以将套环的一端与套环的另一端电隔离。 因此，套环将阳构件与阴构件电绝缘，阳构件，阴构件和绝缘环用作EM遥测的“间隙”。

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