Arrangement and method for deploying downhole tools to locate casing collar using xy magnetometers

    公开(公告)号:US10472952B2

    公开(公告)日:2019-11-12

    申请号:US15438964

    申请日:2017-02-22

    IPC分类号: E21B47/09 G01B7/00

    摘要: A method and apparatus for locating a collar of a casing of a wellbore is disclosed. A sensor for measuring a magnetic field is conveyed through the casing on a tool string. A physical model is formed of a process of obtaining a magnetic measurement of the casing with the sensor. A simulation of the physical model is run through a processor to select a design parameter of the tool that allows for using the sensor at a determined value of an operational parameter for obtaining the measurement at a selected signal-to-noise ratio. The tool is conveyed into the wellbore and the sensor set to the determined value of the operational parameter. The magnetic measurement of the casing is obtained using the sensor, and the collar is located using the obtained magnetic measurement.

    METHOD FOR ORIENTING WHIPSTOCK FOR CASING EXIT IN VERTICAL AND NEAR VERTICAL WELLS USING XY MAGNETOMETERS

    公开(公告)号:US20190024467A1

    公开(公告)日:2019-01-24

    申请号:US15656256

    申请日:2017-07-21

    申请人: Lei Yang Lei Fang

    发明人: Lei Yang Lei Fang

    摘要: A system and method for orienting a tool in a near vertical wellbore. The system includes a tool string having a whipstock at an end thereof, at least two magnetometers oriented transverse to a longitudinal axis of the tool string, and a processor. A first set of magnetic measurements of the earths' magnetic field is obtained during rotation of the tool using a first of the at least two magnetometers and a second set of magnetic measurements of the earth's magnetic field is obtained during rotation using a second of the at least two magnetometers. The processor fits a curve to the first and second sets of magnetic measurements to determine a peak value, determines magnetic north from the determined peak value, determines a toolface orientation of the drill string with respect to the determined magnetic north, and anchors the whipstock at the selected depth and toolface orientation.

    Furniture post
    94.
    外观设计

    公开(公告)号:USD838130S1

    公开(公告)日:2019-01-15

    申请号:US29595596

    申请日:2017-02-28

    申请人: Lei Yang

    设计人: Lei Yang

    Furniture stand
    96.
    外观设计

    公开(公告)号:USD821130S1

    公开(公告)日:2018-06-26

    申请号:US29603149

    申请日:2017-05-07

    申请人: Lei Yang

    设计人: Lei Yang

    Bed Set with Footboard Bench
    97.
    发明申请
    Bed Set with Footboard Bench 审中-公开
    床垫与脚踏板

    公开(公告)号:US20170042337A1

    公开(公告)日:2017-02-16

    申请号:US14824059

    申请日:2015-08-11

    申请人: Lei Yang

    发明人: Lei Yang

    IPC分类号: A47C19/22 A47C19/02 A47C19/00

    摘要: A bed set includes a bed frame which includes a headboard, and a footboard bench, wherein the footboard bench includes a base frame and a back frame upwardly extended from the base frame. The back frame of the footboard bench serves as a footboard of the bed frame to match with the headboard of the bed frame. In particular, an ornamental design of the back frame of the footboard bench matches with an ornamental design of the headboard of the bed frame, so as to enhance an aesthetic appearance of the bed set.

    摘要翻译: 床组包括包括床头板和脚踏板的床架,其中脚踏板台包括基架和从框架向上延伸的后框架。 脚踏板的后框架用作床架的脚踏板以与床架的床头板匹配。 特别地,踏板台的后框架的装饰设计与床架的床头板的装饰设计相匹配,以增强床组的美学外观。

    Simultaneous localization and mapping using spatial and temporal coherence for indoor location
    99.
    发明授权
    Simultaneous localization and mapping using spatial and temporal coherence for indoor location 有权
    使用室内位置的时空相干同步定位和绘图

    公开(公告)号:US09288632B2

    公开(公告)日:2016-03-15

    申请号:US13995563

    申请日:2012-05-01

    IPC分类号: H04W4/04 G01S5/02

    摘要: This document discloses one or more systems, apparatuses, methods, etc. for detecting precise indoor location of a portable wireless device based on a WiFi simultaneous localization and mapping (SLAM) algorithm that implements spatial and temporal coherence. In an implementation, a SLAM algorithm includes WiFi similarities and inertial navigational system (INS) measurements data as location estimates (i.e., references) for the spatial and temporal coherences implementations to constitute the WiFi SLAM algorithm.

    摘要翻译: 本文件公开了一种用于基于实现空间和时间一致性的WiFi同步定位和映射(SLAM)算法来检测便携式无线设备的精确室内位置的一个或多个系统,装置,方法等。 在实现中,SLAM算法包括WiFi相似性和惯性导航系统(INS)测量数据,作为构成WiFi SLAM算法的空间和时间相干性实现的位置估计(即,参考)。

    Supported bimetallic nanocomposite catalyst and the preparation method thereof
    100.
    发明授权
    Supported bimetallic nanocomposite catalyst and the preparation method thereof 有权
    负载型双金属纳米复合催化剂及其制备方法

    公开(公告)号:US09259724B2

    公开(公告)日:2016-02-16

    申请号:US13818699

    申请日:2011-11-07

    摘要: A highly active supported bimetallic nanocatalyst and its preparation method is disclosed. During the preparation, using an ion exchange or adsorption resin bearing basic functional groups as the support of the said catalyst, successively introducing the first metal precursor FeCl4− and the second metal precursor (PdCl42−, NiCl42− or CuCl42−) onto the resin through ion exchange process; then under the protection of nitrogen gas, simultaneously reducing the two metals with either NaBH4 or KBH4; washing the resulting material with deoxygenated water and drying it, and the said catalyst is therefore obtained. The supported bimetallic material is characteristic of independent distribution of the two metals within the support. The independently distributed structure of the two metals enhances the catalytic efficiency of the second metal and the catalytic stability.

    摘要翻译: 公开了一种高活性的双金属纳米催化剂及其制备方法。 在制备过程中,使用具有碱性官能团的离子交换树脂或吸附树脂作为所述催化剂的载体,依次将第一金属前体FeCl4-和第二金属前体(PdCl42-,NiCl42-或CuCl42-)引入到树脂上 离子交换过程; 然后在氮气保护下,同时用NaBH4或KBH4还原两种金属; 用脱氧水洗涤所得物质并干燥,得到所述催化剂。 支撑的双金属材料是支撑体内两种金属独立分配的特征。 两种金属的独立分布结构提高了第二金属的催化效率和催化稳定性。