公开(公告)号：WO2009082550A2

公开(公告)日：2009-07-02

申请号：PCT/US2008/082491

申请日：2008-11-05

Applicant: BAKER HUGHES INCORPORATED ,  DIFOGGIO, Rocco

Inventor： DIFOGGIO, Rocco

IPC: G01V7/00 ,  G01V7/04 ,  E21B49/00 ,  E21B47/00

CPC classification number: G01V7/04 ,  E21B47/00 ,  G01D5/30

Abstract: An instrument for measuring gravitational acceleration from within a borehole, the instrument including: a light source having a semiconductor that comprises a bandgap greater than about two electron volts (eV); and a gravimeter for receiving light from the light source and providing output light with a characteristic related to the gravitational acceleration, the gravimeter implemented at least one of a nano electro- mechanical system (NEMS) and a micro electro-mechanical system (MEMS); wherein the light source and the gravimeter are disposed in a housing adapted for insertion into the borehole.

Abstract translation: 一种用于从钻孔内测量重力加速度的仪器，所述仪器包括：具有包括大于约两电子伏（eV）的带隙的半导体的光源; 以及用于接收来自光源的光并且提供具有与重力加速度相关的特性的输出光的重力计，重力计实现了纳米机电系统（NEMS）和微机电系统（MEMS）中的至少一个。 其中所述光源和所述重力计设置在适于插入所述钻孔中的壳体中。

公开(公告)号：WO2008021643A3

公开(公告)日：2008-10-09

申请号：PCT/US2007073367

申请日：2007-07-12

Applicant: COLORADO SCHOOL OF MINES ,  PEETERS MAXIMILIAAN ,  SNIEDER ROELOF K

Inventor： PEETERS MAXIMILIAAN ,  SNIEDER ROELOF K

IPC: G01B9/02 ,  G01V7/04

CPC classification number: G01V7/14

Abstract: A borehole tool including an interferometer, a light source, a chamber containing a sliding weight having a first optical prism, a second optical prism located within the chamber, a tilt measuring device, and a timing device operatively associated with the interferometer. The light source, the interferometer, and the first and second optical prisms are configured to cause light emitted by the light source to form a first beam and a second beam that interfere with each other. The interferometer measures distances traveled by the sliding weight in the upward and downward direction by counting the fringes caused by the interference between the first beam and the second beam. The tilt measuring device measures the angle of the chamber relative to vertical. The influence of friction on the sliding weight's motion is eliminated by comparing the distances traveled by it in its upward and downward path over an equal time interval.

Abstract translation: 一种钻孔工具，包括干涉仪，光源，包含具有第一光学棱镜的滑动重物的腔室，位于腔室内的第二光学棱镜，倾斜测量装置和与干涉仪可操作地相关联的定时装置。 光源，干涉仪以及第一和第二光学棱镜被配置成使由光源发射的光形成彼此干涉的第一光束和第二光束。 干涉仪通过计数由第一光束和第二光束之间的干涉引起的条纹来测量滑动重量在向上和向下方向上行进的距离。 倾斜测量装置测量腔室相对于垂直方向的角度。 通过比较在相同的时间间隔内它在其向上和向下路径中行进的距离来消除摩擦对滑动重量运动的影响。

公开(公告)号：WO2009026004A1

公开(公告)日：2009-02-26

申请号：PCT/US2008/072486

申请日：2008-08-07

Applicant: BAKER HUGHES INCORPORATED ,  DIFOGGIO, Rocco ,  GEORGI, Daniel, T. ,  ESTES, Robert, Alan

Inventor： DIFOGGIO, Rocco ,  GEORGI, Daniel, T. ,  ESTES, Robert, Alan

IPC: G01V7/04

CPC classification number: G01V7/00 ,  E21B47/04

Abstract: A method for measuring true vertical depth in a borehole, the method including: measuring gravitational acceleration in the borehole; and determining the true vertical depth from the measurement.

Abstract translation: 一种用于测量钻孔中真实垂直深度的方法，所述方法包括：测量井眼中的重力加速度; 并从测量中确定真实的垂直深度。

公开(公告)号：WO2004086091A3

公开(公告)日：2005-08-11

申请号：PCT/US2004008621

申请日：2004-03-22

Applicant: ANDER MARK E

Inventor： ANDER MARK E

IPC: G01V7/00 ,  G01V7/04

CPC classification number: G01V7/00

Abstract: Techniques for using gravity in applications such as drilling and logging. Techniques are present for (1) gravity well logging using gravity sensors arrays; (2) creating density pseudosections using gravity measurements; (3) performing Gravity Measurement While Drilling (GMWD) using single or multiple gravity sensors; and (4) geosteering using GMWD.

Abstract translation: 在钻井和测井等应用中使用重力的技术。 存在以下技术（1）使用重力传感器阵列进行重力测井; （2）使用重力测量创建密度假断面; （3）使用单重或多重重力传感器进行钻孔重力测量（GMWD）; 和（4）使用GMWD的地理导向。

公开(公告)号：WO2022169009A1

公开(公告)日：2022-08-11

申请号：PCT/KR2021/001623

申请日：2021-02-08

Applicant: 심용수

Inventor： 심상우 ,  심지원

IPC: G01R31/08 ,  G01R19/145 ,  G01R29/08 ,  G01R33/02 ,  G01V3/40 ,  G01V7/04 ,  G08B5/36 ,  G08B3/10 ,  G01S19/14

Abstract: 본 발명의 일 실시예에 따르는, 스마트워치에 의해 수행되는, 스마트 워치를 통한 활선 감지방법은, (a) 스마트 워치의 지자계 센서를 통하여 상기 지자계 센서 측정 값을 수집하고, 수집된 상기 지자계 센서 측정 값을 자력측정 값으로 변환하는 단계; (b) 상기 스마트 워치는 기 설정된 알고리즘에 따라, 변환된 자력측정 값이 기준 값 이상인 경우, 경보 알람을 상기 스마트 워치와 무선 연결된 상기 스마트 워치로 제공하는 단계; 를 포함하고, 상기 지자계 센서는 3차원 공간에 대한 전자기력 또는 자력을 측정할 수 있고, 상기 스마트 워치에 내장 된 지자계 센서를 통하여 측정된 상기 지자계 센서 측정 값은 X축 지자계 값, Y축 지자계 값, Z축 지자계 값을 포함하는 3축 지자계 값일 수 있다.

公开(公告)号：WO2022159616A1

公开(公告)日：2022-07-28

申请号：PCT/US2022/013179

申请日：2022-01-20

Applicant: TERAHERTZ VENTURES LLC

Inventor： HARNEY, Michael John ,  NINIC, Mario ,  MANSFIELD, Kim ,  OWENS, Brian D.

IPC: G01V7/04 ,  G01V7/06 ,  G01V3/08 ,  G01V8/00

Abstract: A system, method, and platform for detecting natural resources. Gravitational waves are measured utilizing one or more sensor systems associated with an exploration area. The one or more sensor systems include at least an accelerometer capturing measurements in a range of 1 microhertz to 100 microhertz that are stored in a memory associated with the accelerometer. A fast fourier transform is performed for the measurements to generate processed signals. Natural resources are determined proximate the one or more sensor systems from the processed signals.

公开(公告)号：WO2018071993A1

公开(公告)日：2018-04-26

申请号：PCT/AU2017/051159

申请日：2017-10-23

Applicant: THE UNIVERSITY OF WESTERN AUSTRALIA ,  VERYASKIN, Alexey Vladimirovich

Inventor： VERYASKIN, Alexey Vladimirovich ,  BOURHILL, Jeremy Francis ,  IVANOV, Eugene Nikolay ,  TOBAR, Michael Edmund

IPC: G01V7/04

Abstract: A sensing element (10) for an intrinsic gravity gradiometer (IGG) for use in sensing variation in a gravity field at a location. The sensing element (10) is flexible, elongate and has unfixed opposed ends (12, 14) when part of the gravity gradiometer. The sensing element can be a metallic ribbon, and can be mounted by a number e.g. 3 or 5, pivot points or axes 30-40 at each of the opposed sides along the sensing element, with the opposed ends of the sensing element free to move. The pivot points or axes can include pins, preferably cylindrical pins (48) or the sensing element may be etched within the side wall and remain joined to the remainder of the side wall by connections. The sensing element (10) can form part of one or more resonant cavities or wave guide (44, 52-66), such as a side or dividing wall (46) or part thereof. A dual phase bridge (61,612) arrangement can be provided. Electrical current (I) can be injected into the sensing element. Feed forward motion compensation (MC or FFMC) can be applied as part of the determination of the current. Applying electrical current into the opposed longitudinal sides (20, 22), such as right and left sides, of the sensing element, such as a ribbon, can be used for several types of compensation. Displacement of the sensing element can be detected by a resonant cavity, electromagnetic sensor or optical sensor.

Abstract translation: 用于固体重力梯度仪（IGG）的感测元件（10）用于感测位置处重力场的变化。 感测元件（10）是柔性的，细长的并且当重力梯度仪的一部分时具有未固定的相对端（12,14）。 传感元件可以是金属带，并且可以通过多种方式安装。 如图3或5所示，在沿感测元件的相对侧的每一侧处的枢轴点或轴线30-40，感测元件的相对端自由移动。 枢轴点或轴线可以包括销，优选为圆柱形销（48），或者感测元件可以在侧壁内被蚀刻并且通过连接保持连接到侧壁的其余部分。 感测元件（10）可以形成一个或多个谐振腔或波导（44,52-66）的一部分，例如侧壁或分隔壁（46）或其一部分。 可以提供双相桥（61,612）装置。 电流（I）可以注入传感元件。 前馈运动补偿（MC或FFMC）可作为确定电流的一部分。 将电流施加到感测元件（诸如带状物）的诸如右侧和左侧的相对的纵向侧（20,22）中可以用于多种类型的补偿。 传感元件的位移可以通过谐振腔，电磁传感器或光学传感器来检测。

公开(公告)号：WO2013096391A3

公开(公告)日：2015-07-09

申请号：PCT/US2012070514

申请日：2012-12-19

Applicant: SCHLUMBERGER SERVICES PETROL ,  SCHLUMBERGER TECHNOLOGY BV ,  SCHLUMBERGER HOLDINGS ,  SCHLUMBERGER CA LTD ,  PRAD RES & DEV LTD ,  SCHLUMBERGER TECHNOLOGY CORP

Inventor： LULING MARTIN G

IPC: G01V7/04

CPC classification number: G01V5/12

Abstract: Systems and methods are provided for determining a property, e.g., density, of a geological formation based on Einstein's theory of gravitation. A tandem-structured gravimeter uses two gamma radiations emitted to two directions to determine a gravitational potential difference between two positions of the geological formation. The gravimeter can be a part of a downhole tool. The gravitational potential difference determined can be used to determine the property of the geological formation.

Abstract translation: 提供了基于爱因斯坦引力理论确定地质构造的性质，例如密度的系统和方法。 串联结构的重力仪使用向两个方向发射的两个伽马辐射来确定地质构造的两个位置之间的重力电位差。 重力仪可以是井下工具的一部分。 确定的重力电位差可用于确定地质构造的性质。

公开(公告)号：WO2022029404A1

公开(公告)日：2022-02-10

申请号：PCT/GB2021/051841

申请日：2021-07-19

Applicant: THE UNIVERSITY OF BIRMINGHAM

Inventor： BONGS, Kai ,  HOLYNSKI, Michael ,  NOURSHARGH, Rustin

IPC: G01P15/08 ,  G01P15/093 ,  G01B9/02 ,  G01B2290/55 ,  G01V7/04

Abstract: The application discloses an atom interferometer comprising an optical cavity and method of operation thereof. The atom interferometer includes a vacuum chamber, an optical cavity, a source for providing a cloud of atoms in the optical cavity in use, and one or more light sources. The one or more light sources are for generating, in the cavity, in use a first light beam having a first polarisation and at a first frequency for a two-photon interaction in the atoms; and a counterpropagating second light beam having a second polarisation orthogonal to the first polarisation and at a second frequency for the two-photon interaction in the atoms. The atom interferometer also includes an electro-optic element arranged in the cavity to be operable to simultaneously change: the resonant frequency of the cavity for light in the first polarisation to track changes in the frequency of the first light beam to compensate for the doppler shift of the falling atoms in use; and the resonant frequency of the cavity for light in the second polarisation to track changes in frequency of the counterpropagating second light beam to compensate for the doppler shift of the falling atoms in use.

公开(公告)号：WO2019116047A1

公开(公告)日：2019-06-20

申请号：PCT/GB2018/053630

申请日：2018-12-14

Applicant: THE UNIVERSITY OF BIRMINGHAM

Inventor： LAMB, Andrew ,  DE VILLIERS, Geoff ,  HOLYNSKI, Michael ,  BONGS, Kai

IPC: G01V7/04 ,  G01V7/14

CPC classification number: G01V7/04 ,  G01V7/14

Abstract: The disclosure relates to a gravity gradiometer comprising a pair of magneto-optical traps for measuring a gravity gradient. Example embodiments include a cold atom gravity gradiometer system (100) comprising: first and second magneto-optical traps (101, 102), each having a plurality of mirrored surfaces (103, 104) arranged to reflect an incident laser beam (105, 106) to trap respective first and second cold atom clouds (107, 108) separated from each other by a separation distance; an optical subsystem arranged to transmit a first laser beam (105) in a first direction along a first longitudinal axis towards the first magneto-optical trap (101) and a second laser beam (106) in an opposite second direction along a second longitudinal axis towards the second magneto-optical trap (102), the second longitudinal axis being parallel to the first longitudinal axis.