Derivative ratio test of fluid sampling cleanup

    公开(公告)号:US11193826B2

    公开(公告)日:2021-12-07

    申请号:US16293184

    申请日:2019-03-05

    IPC分类号: G01J3/433 E21B49/10 E21B49/08

    摘要: A method for performing a formation fluid test in a borehole penetrating a subsurface formation includes disposing a fluid tester in the borehole, extracting a sample of fluid from the subsurface formation using the fluid tester, and analyzing the sample using the fluid tester to provide test data for a process used to analyze the sample. The method also includes fitting an equation to the test data and calculating a ratio of a first derivative of the equation to a second derivative of the equation. The method further includes continuing to extract the sample from the subsurface formation in response to the ratio indicating a clean sample will be forthcoming and terminating the extracting of the sample from the subsurface formation in response to the ratio indicating a clean sample will not be forthcoming.

    Directional drilling control system and methods

    公开(公告)号:US10822878B2

    公开(公告)日:2020-11-03

    申请号:US15136362

    申请日:2016-04-22

    IPC分类号: E21B44/02 E21B7/04 E21B7/06

    摘要: A method for forming a wellbore in an earth formation includes positioning a drill string in a wellbore; the drill string including a bottom hole assembly (BHA) that includes a steering unit, one or more sensors responsive to one or more formation properties, and one or more sensors responsive to the current orientation of the BHA in a wellbore. The method also includes receiving information from the BHA related to the formation properties and information related to a current orientation of the BHA in the wellbore and processing the information using computing device that is either a programmable optical computing device or a quantum computing device. The computing device calculates the position of formation features with respect to current wellbore position in real time and compare the current position to a prescribed path.

    Wavelength-selective, high temperature, near infrared photodetectors for downhole applications
    6.
    发明授权
    Wavelength-selective, high temperature, near infrared photodetectors for downhole applications 有权
    用于井下应用的波长选择性,高温近红外光电探测器

    公开(公告)号:US09441480B2

    公开(公告)日:2016-09-13

    申请号:US14045423

    申请日:2013-10-03

    摘要: An apparatus for estimating a property of a downhole fluid includes a carrier configured to be conveyed through a borehole penetrating the earth, a fluid extraction device disposed at the carrier and configured to extract a sample of the downhole fluid, and a probe cell having a window to receive the sample. The apparatus further includes a light source to illuminate the sample through the window with light photons, and a photodetector to receive light photons through the window that have interacted with the downhole fluid and generate a signal indicative of an amount of the received light photons. The generated signal is indicative of the property. The photodetector has an optical cavity having a semiconductor that has a difference between a valence energy band and a conduction energy band for electrons that is greater than the energy of each of the received light photons.

    摘要翻译: 一种用于估计井下流体的性质的装置包括构造成通过穿透地球的钻孔输送的载体,设置在载体处并构造成提取井下流体的样品的流体提取装置,以及具有窗口的探针单元 接收样品。 该装置还包括用光子照射通过窗口的样品的光源,以及光电检测器,用于接收与井下流体相互作用的通过窗口的光子,并产生指示所接收的光子的量的信号。 产生的信号表示该属性。 光电探测器具有一个具有半导体的光学腔,该半导体具有比每个接收的光子的能量大的电子的价态能带和导电能带之间的差异。

    Method for physical modeling of reservoirs
    8.
    发明授权
    Method for physical modeling of reservoirs 有权
    储层物理建模方法

    公开(公告)号:US09207355B2

    公开(公告)日:2015-12-08

    申请号:US13434171

    申请日:2012-03-29

    申请人: Rocco DiFoggio

    发明人: Rocco DiFoggio

    摘要: Disclosed is method for simulating materials subsurface to the earth. The method includes: receiving dimensions of each subsurface material to be simulated; receiving a value of a property for each of subsurface materials to be simulated; and constructing a three-dimensional physical model of the subsurface materials using a three-dimensional printer, the three-dimensional printer being configured to print one or more layers of a print material for each of the subsurface materials being represented in the model wherein dimensions and a property value of the print material for each subsurface material being represented corresponds to the dimensions and the property value for that subsurface material.

    摘要翻译: 公开了一种模拟地下地下材料的方法。 该方法包括:接收待模拟的每个地下材料的尺寸; 接收要模拟的每个地下材料的属性值; 以及使用三维打印机构建所述地下材料的三维物理模型,所述三维打印机被配置为为模型中表示的每个所述地下材料印刷一层或多层印刷材料,其中尺寸和 表示的每个地下材料的印刷材料的属性值对应于该地下材料的尺寸和属性值。

    DOWNHOLE USES OF NANOSPRING FILLED ELASTOMERS
    9.
    发明申请
    DOWNHOLE USES OF NANOSPRING FILLED ELASTOMERS 有权
    纳米弹性填充弹性体的使用

    公开(公告)号:US20150267496A1

    公开(公告)日:2015-09-24

    申请号:US14218008

    申请日:2014-03-18

    申请人: Rocco DiFoggio

    发明人: Rocco DiFoggio

    IPC分类号: E21B33/10 E21B49/08 E21B49/10

    摘要: A seal includes an elastomeric material and a plurality of nanosprings filling the elastomeric material to form a filled elastomeric composite that provides the seal. A spring constant of the nanosprings is within a selected range of an effective spring constant of the elastomeric material such that a durometer of the filled elastomeric composite at an elevated temperature is greater than the durometer of the elastomeric material alone at the elevated temperature. The seal may be used to seal a first component to a second component where both components are configured to perform a task below the surface of the earth.

    摘要翻译: 密封件包括弹性体材料和填充弹性体材料的多个纳米螺旋,以形成提供密封件的填充弹性体复合材料。 纳米螺旋的弹簧常数在弹性体材料的有效弹簧常数的选定范围内,使得在升高的温度下填充的弹性体复合材料的硬度大于在高温下单独的弹性体材料的硬度。 密封件可用于将第一部件密封到第二部件,其中两个部件被构造成执行地球表面下方的任务。

    Gaseous gravimeter
    10.
    发明授权
    Gaseous gravimeter 有权
    气体重力仪

    公开(公告)号:US09110182B2

    公开(公告)日:2015-08-18

    申请号:US13455251

    申请日:2012-04-25

    申请人: Rocco DiFoggio

    发明人: Rocco DiFoggio

    CPC分类号: G01V7/04 G01N9/36 G01V7/16

    摘要: An apparatus for estimating gravitational acceleration includes: a chamber having a longitudinal axis and configured to contain a first gas; a first cavity ring-down spectrometer configured to measure a density of the first gas at a first location along the longitudinal axis using a first optical cavity having a first optical axis and configured to resonate light rays that are absorbed by the first gas in the first optical cavity, wherein the first optical axis has at least a vector component perpendicular to the longitudinal axis; and a processor configured to receive a first density measurement from the first cavity ring-down spectrometer and to estimate the gravitational acceleration using the first density measurement.

    摘要翻译: 用于估计重力加速度的装置包括:具有纵向轴线并被构造成容纳第一气体的腔室; 第一空腔下降光谱仪,被配置为使用具有第一光轴的第一光学腔来测量沿着纵向轴线的第一位置处的第一气体的密度,并且被配置为共振第一气体在第一气体中被吸收的光线 光学腔,其中所述第一光轴具有至少垂直于所述纵向轴线的矢量分量; 以及处理器,其被配置为从所述第一腔体衰减光谱仪接收第一密度测量值,并且使用所述第一密度测量来估计所述重力加速度。