DOWNHOLE CLOSED-LOOP GEOSTEERING METHODOLOGY
    1.
    发明申请
    DOWNHOLE CLOSED-LOOP GEOSTEERING METHODOLOGY 有权
    井下闭环地球化学方法

    公开(公告)号:US20120046868A1

    公开(公告)日:2012-02-23

    申请号:US12859416

    申请日:2010-08-19

    IPC分类号: G01V1/40

    摘要: A closed-loop method for geosteering includes acquiring logging while drilling data and processing the logging while drilling data downhole while drilling to obtain a geosteering correction (a correction to the drilling direction based upon the LWD measurements). The geosteering correction is further processed downhole to obtain new steering tool settings which are then applied to the steering tool to change the direction of drilling. These steps are typically repeated numerous times without the need for uphole processing or surface intervention.

    摘要翻译: 用于地理导向的闭环方法包括在钻井时采集钻井数据和处理钻井记录,同时钻孔时钻井数据,以获得地质导向校正(基于LWD测量值对钻削方向的校正)。 地质导向校正在井下进一步处理,以获得新的转向工具设置,然后将其应用于转向工具以改变钻孔方向。 这些步骤通常重复多次,而不需要井下处理或表面干预。

    Downhole closed-loop geosteering methodology
    2.
    发明授权
    Downhole closed-loop geosteering methodology 有权
    井下闭环地质导向方法

    公开(公告)号:US09273517B2

    公开(公告)日:2016-03-01

    申请号:US12859416

    申请日:2010-08-19

    摘要: A closed-loop method for geosteering includes acquiring logging while drilling data and processing the logging while drilling data downhole while drilling to obtain a geosteering correction (a correction to the drilling direction based upon the LWD measurements). The geosteering correction is further processed downhole to obtain new steering tool settings which are then applied to the steering tool to change the direction of drilling. These steps are typically repeated numerous times without the need for uphole processing or surface intervention.

    摘要翻译: 用于地理导向的闭环方法包括在钻井时采集钻井数据和处理钻井记录,同时钻孔时钻井数据,以获得地质导向校正(基于LWD测量值对钻井方向的校正)。 地质导向校正在井下进一步处理,以获得新的转向工具设置,然后将其应用于转向工具以改变钻孔方向。 这些步骤通常重复多次,而不需要井下处理或表面干预。

    Telemetry Coding and Surface Detection for a Mud Pulser
    3.
    发明申请
    Telemetry Coding and Surface Detection for a Mud Pulser 有权
    泥浆机的遥测编码和表面检测

    公开(公告)号:US20110026362A1

    公开(公告)日:2011-02-03

    申请号:US12512222

    申请日:2009-07-30

    IPC分类号: G01V1/40 H03M7/00

    摘要: A method for encoding a non-negative integer, for example, representative of MWD/LWD data, includes encoding at least a portion of the integer using at least a first order Fibonacci derived sequence. The remainder of the integer may be encoded using conventional Fibonacci encoding. The invention tends to improve coding efficiency, downhole and surface synchronization, and surface detection.

    摘要翻译: 编码例如代表MWD / LWD数据的非负整数的方法包括使用至少一阶斐波纳契衍生序列对整数的至少一部分进行编码。 整数的剩余部分可以使用常规斐波纳契编码进行编码。 本发明倾向于提高编码效率,井下和表面同步以及表面检测。

    Data compression transforms for use in downhole applications
    4.
    发明申请
    Data compression transforms for use in downhole applications 有权
    数据压缩转换用于井下应用

    公开(公告)号:US20090190850A1

    公开(公告)日:2009-07-30

    申请号:US12148890

    申请日:2008-04-23

    申请人: Caimu Tang

    发明人: Caimu Tang

    IPC分类号: G06K9/38

    CPC分类号: G01V11/00

    摘要: Borehole image data is compressed and transmitted to the surface one or more pixilated traces at a time. The compression methodology typically includes transform, quantization, and entropy encoding steps. The invention advantageously provides an efficient fixed point Karhünen-Loève like transform for compressing sensor data. A significant reduction in latency is achieved as compared to the prior art.

    摘要翻译: 钻孔图像数据被压缩并一次传输到表面一个或多个像素化迹线。 压缩方法通常包括变换,量化和熵编码步骤。 本发明有利地提供了用于压缩传感器数据的有效固定点Karhünen-Loève类似的变换。 与现有技术相比,实现了潜在的显着降低。

    Data compression method for use in downhole applications
    5.
    发明授权
    Data compression method for use in downhole applications 有权
    用于井下应用的数据压缩方法

    公开(公告)号:US08024121B2

    公开(公告)日:2011-09-20

    申请号:US12011422

    申请日:2008-01-25

    申请人: Caimu Tang

    发明人: Caimu Tang

    IPC分类号: G01V1/30

    CPC分类号: G01V3/38 E21B47/12 G01V1/22

    摘要: Borehole image data is compressed and transmitted to the surface one pixilated trace at a time. The compression methodology typically includes transform, quantization, and entropy encoding steps. The invention advantageously provides for sufficient data compression to enable conventional telemetry techniques (e.g., mud pulse telemetry) to be utilized for transmitting borehole images to the surface. By compressing and transmitting sensor data trace by trace the invention also tends to significantly reduce latency.

    摘要翻译: 钻孔图像数据被压缩并一次传输到表面一个像素化轨迹。 压缩方法通常包括变换,量化和熵编码步骤。 本发明有利地提供足够的数据压缩,以使得能够利用传统的遥测技术(例如泥浆脉冲遥测)来将井眼图像传送到地面。 通过跟踪本发明的压缩和传输传感器数据跟踪也倾向于显着减少延迟。

    Data compression method for use in downhole applications
    6.
    发明申请
    Data compression method for use in downhole applications 有权
    用于井下应用的数据压缩方法

    公开(公告)号:US20090192711A1

    公开(公告)日:2009-07-30

    申请号:US12011422

    申请日:2008-01-25

    申请人: Caimu Tang

    发明人: Caimu Tang

    IPC分类号: G01V3/38

    CPC分类号: G01V3/38 E21B47/12 G01V1/22

    摘要: Borehole image data is compressed and transmitted to the surface one pixilated trace at a time. The compression methodology typically includes transform, quantization, and entropy encoding steps. The invention advantageously provides for sufficient data compression to enable conventional telemetry techniques (e.g., mud pulse telemetry) to be utilized for transmitting borehole images to the surface. By compressing and transmitting sensor data trace by trace the invention also tends to significantly reduce latency.

    摘要翻译: 钻孔图像数据被压缩并一次传输到表面一个像素化轨迹。 压缩方法通常包括变换,量化和熵编码步骤。 本发明有利地提供足够的数据压缩,以使得能够利用传统的遥测技术(例如泥浆脉冲遥测)来将井眼图像传送到地面。 通过跟踪本发明的压缩和传输传感器数据跟踪也倾向于显着减少延迟。

    Data compression transforms for use in downhole applications
    7.
    发明授权
    Data compression transforms for use in downhole applications 有权
    数据压缩转换用于井下应用

    公开(公告)号:US08788206B2

    公开(公告)日:2014-07-22

    申请号:US12148890

    申请日:2008-04-23

    申请人: Caimu Tang

    发明人: Caimu Tang

    IPC分类号: G01V1/22

    CPC分类号: G01V11/00

    摘要: Borehole image data is compressed and transmitted to the surface one or more pixilated traces at a time. The compression methodology typically includes transform, quantization, and entropy encoding steps. The invention advantageously provides an efficient fixed point Karhünen-Loève like transform for compressing sensor data. A significant reduction in latency is achieved as compared to the prior art.

    摘要翻译: 钻孔图像数据被压缩并一次传输到表面一个或多个像素化迹线。 压缩方法通常包括变换,量化和熵编码步骤。 本发明有利地提供了用于压缩传感器数据的有效固定点Karhünen-Loève类似的变换。 与现有技术相比,实现了潜在的显着降低。

    Telemetry coding and surface detection for a mud pulser
    8.
    发明授权
    Telemetry coding and surface detection for a mud pulser 有权
    泥浆脉冲发生器的遥测编码和表面检测

    公开(公告)号:US08730764B2

    公开(公告)日:2014-05-20

    申请号:US12512222

    申请日:2009-07-30

    IPC分类号: G01V1/40 H03M7/00

    摘要: A method for encoding a non-negative integer, for example, representative of MWD/LWD data, includes encoding at least a portion of the integer using at least a first order Fibonacci derived sequence. The remainder of the integer may be encoded using conventional Fibonacci encoding. The invention tends to improve coding efficiency, downhole and surface synchronization, and surface detection.

    摘要翻译: 编码例如代表MWD / LWD数据的非负整数的方法包括使用至少一阶斐波纳契衍生序列对整数的至少一部分进行编码。 整数的剩余部分可以使用常规斐波纳契编码进行编码。 本发明倾向于提高编码效率,井下和表面同步以及表面检测。

    SYNCHRONIZATION METHODS FOR DOWNHOLE COMMUNICATION
    9.
    发明申请
    SYNCHRONIZATION METHODS FOR DOWNHOLE COMMUNICATION 审中-公开
    井下通信同步方法

    公开(公告)号:US20120163523A1

    公开(公告)日:2012-06-28

    申请号:US12975553

    申请日:2010-12-22

    申请人: Caimu Tang

    发明人: Caimu Tang

    IPC分类号: H04L7/04

    摘要: A method for synchronizing a waveform received in a subterranean borehole with a transmitted waveform includes at least one of a phase synchronization, a symbol synchronization, or a frame synchronization method. The phase and symbol synchronization methods make use of distinct loop filters which process corresponding feedback signals so as to output phase clock and symbol clock adjustments. Frame synchronization methods accumulate a preamble correlation on a symbol stream having at least one repeating preamble.

    摘要翻译: 将在地下钻孔中接收的波形与发送的波形同步的方法包括相位同步,符号同步或帧同步方法中的至少一个。 相位和符号同步方法利用不同的环路滤波器来处理相应的反馈信号,从而输出相位时钟和符号时钟调整。 帧同步方法在具有至少一个重复前导码的符号流上累积前同步码相关。