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    Compensated Caliper Using Combined Acoustic and Density Measurements
    3.
    发明申请
    Compensated Caliper Using Combined Acoustic and Density Measurements 有权
    补偿卡尺使用组合声学和密度测量

    公开(公告)号：US20090043509A1

    公开(公告)日：2009-02-12

    申请号：US11770209

    申请日：2007-08-10

    申请人： William Madigan ,  Eric B. Molz ,  Gamal A. Hassan ,  Philip L. Kurkoski

    发明人： William Madigan ,  Eric B. Molz ,  Gamal A. Hassan ,  Philip L. Kurkoski

    IPC分类号： G01V5/12

    CPC分类号： G01V5/125 ,  E21B47/082

    摘要： A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An analytic function based on a heuristic model is used to predict the measured response as a function of offset, mud density and formation density. The model may be used to provide a caliper measurement where acoustic caliper data are unreliable. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understand that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

    摘要翻译： 钻井测井密度传感器包括伽马射线源和与源间隔开的至少两个NaI检测器，用于确定指示地层密度的测量值。 基于启发式模型的分析函数用于将测量响应预测为偏移，泥浆密度和地层密度的函数。 该模型可用于提供测厚仪数据不可靠的卡尺测量。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交的理由是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

    METHOD AND APPARATUS FOR HIGH RESOLUTION SOUND SPEED MEASUREMENTS
    4.
    发明申请
    METHOD AND APPARATUS FOR HIGH RESOLUTION SOUND SPEED MEASUREMENTS 审中-公开
    用于高分辨率声速测量的方法和装置

    公开(公告)号：US20100315900A1

    公开(公告)日：2010-12-16

    申请号：US12796817

    申请日：2010-06-09

    申请人： Rocco DiFoggio ,  Eric B. Molz ,  Anjani R. Achanta

    发明人： Rocco DiFoggio ,  Eric B. Molz ,  Anjani R. Achanta

    IPC分类号： G01V1/00

    CPC分类号： G01V1/40

    摘要： An apparatus for estimating an influx of a formation fluid into a borehole fluid, the apparatus having: a carrier; an acoustic transducer disposed at the carrier; a first reflector disposed a first distance from the acoustic transducer and defining a first round trip distance; a second reflector disposed a second distance from the acoustic transducer and defining a second round trip distance; and a processor in communication with the acoustic transducer and configured to measure a difference between a first travel time for the acoustic signal traveling the first round trip distance and a second travel time for the acoustic signal traveling the second round trip distance to estimate the influx of the formation fluid; wherein the acoustic transducer, the first reflector, and the second reflector are disposed in the borehole fluid that is in the borehole.

    摘要翻译： 一种用于估计地层流体进入井眼流体的装置，该装置具有：载体; 设置在载体处的声换能器; 第一反射器，布置在离声换能器第一距离处，并且限定第一往返距离; 第二反射器，布置在离声换能器第二距离处，并限定第二往返距离; 以及处理器，其与所述声换能器通信并且被配置为测量行进所述第一往返行程距离的声信号的第一行进时间与行驶所述第二往返距离的所述声信号的第二行进时间之间的差，以估计 地层流体; 其中所述声换能器，所述第一反射器和所述第二反射器设置在所述钻孔中的钻孔流体中。

    Downhole navigation and detection system
    6.
    发明授权
    Downhole navigation and detection system 有权
    井下导航和检测系统

    公开(公告)号：US07763845B2

    公开(公告)日：2010-07-27

    申请号：US11503688

    申请日：2006-08-14

    申请人： Robert A. Estes ,  Rocco DiFoggio ,  Eric B. Molz ,  Constantyn Chalitsios ,  Philip L. Kurkoski

    发明人： Robert A. Estes ,  Rocco DiFoggio ,  Eric B. Molz ,  Constantyn Chalitsios ,  Philip L. Kurkoski

    IPC分类号： G01V5/08

    CPC分类号： E21B47/024 ,  G01V5/101 ,  G01V5/107

    摘要： A photodiode whose long-wavelength cutoff is in the short-wavelength range (preferably, between ultraviolet and yellowish-green) having reduced temperature sensitivity is used in downhole applications. It may be matched with scintillation devices having an output matched to the response curve of the photodiode for use with nuclear logging devices. The photodiode may also be used in gyroscopes in which light from an LED matched to the photodiode is reflected from a spinning mass.

    摘要翻译： 在井下应用中使用长波长截止在温度敏感度降低的短波长范围（优选在紫外线和黄绿色之间）的光电二极管。 它可以与具有与用于核测井装置的光电二极管的响应曲线匹配的输出的闪烁装置匹配。 光电二极管也可用在陀螺仪中，其中来自与光电二极管匹配的LED的光从旋转质量体反射。

    Compensated caliper using combined acoustic and density measurements
    7.
    发明授权
    Compensated caliper using combined acoustic and density measurements 有权
    补偿卡尺使用组合的声学和密度测量

    公开(公告)号：US07596452B2

    公开(公告)日：2009-09-29

    申请号：US11770209

    申请日：2007-08-10

    申请人： William Madigan ,  Eric B. Molz ,  Gamal A. Hassan ,  Philip L. Kurkoski

    发明人： William Madigan ,  Eric B. Molz ,  Gamal A. Hassan ,  Philip L. Kurkoski

    IPC分类号： G01V1/40

    CPC分类号： G01V5/125 ,  E21B47/082

    摘要： A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An analytic function based on a heuristic model is used to predict the measured response as a function of offset, mud density and formation density. The model may be used to provide a caliper measurement where acoustic caliper data are unreliable.

    摘要翻译： 钻井测井密度传感器包括伽马射线源和与源间隔开的至少两个NaI检测器，用于确定指示地层密度的测量值。 基于启发式模型的分析函数用于将测量响应预测为偏移，泥浆密度和地层密度的函数。 该模型可用于提供测厚仪数据不可靠的卡尺测量。