公开(公告)号：US20180266237A1

公开(公告)日：2018-09-20

申请号：US15983128

申请日：2018-05-18

申请人： Schlumberger Technology Corporation

发明人： Andrew G. Brooks ,  Junichi Sugiura

IPC分类号： E21B47/022

CPC分类号： E21B47/022

摘要： A method for making dynamic gravity toolface measurements while rotating a downhole measurement tool in a borehole is disclosed. The method includes processing magnetic field measurements and accelerometer measurements to compute a toolface offset and further processing the toolface offset in combination with a magnetic toolface to obtain the dynamic gravity toolface. Methods for correcting dynamic and static navigational sensor measurements to remove sensor biases, for example, are also disclosed.

公开(公告)号：US20180230794A1

公开(公告)日：2018-08-16

申请号：US15534378

申请日：2016-09-26

申请人： Burkay Donderici ,  Baris Guner

发明人： Burkay Donderici ,  Baris Guner

IPC分类号： E21B47/022 ,  E21B47/09 ,  G01V3/26

CPC分类号： E21B47/02216 ,  E21B47/09 ,  E21B47/122 ,  G01V1/00 ,  G01V3/20 ,  G01V3/26

摘要： The structural integrity and reliability of a downhole tool or mandrel may be improved by implementation of a design and configuration that does not require several separate components to be coupled together. An insulating sleeve is wrapped around the outside of a mandrel. Electrodes, both transmit and return, are wrapped around the insulating sleeve. The outside diameter of the mandrel is increased but the structural integrity and reliability of the mandrel is maintained as no gap sub is used to electrically isolate the electrodes from the mandrel. The insulating sleeve may be tapered at the edges to prevent excessive wear on the sleeve. The insulating sleeve may also extend the full distance between the electrodes to provide even more insulation.

公开(公告)号：US20180223646A1

公开(公告)日：2018-08-09

申请号：US15553558

申请日：2016-11-12

申请人： Institute of Geology and Geophysics, Chinese Academy of Sciences

发明人： Wenxiu ZHANG ,  Wenxuan CHEN ,  Qingyun DI ,  Jianguang LIU ,  Yuntao SUN ,  Yongyou YANG ,  Jian ZHENG

IPC分类号： E21B47/022 ,  E21B47/06 ,  G01P15/18 ,  G01C21/16 ,  G01P1/00

CPC分类号： E21B47/02216 ,  E21B47/022 ,  E21B47/024 ,  E21B47/065 ,  G01C21/16 ,  G01P1/006 ,  G01P15/18

摘要： An apparatus for measuring gravity acceleration of a drilling tool comprises sensors and a measurement circuit. The sensor comprises a three-axis gravity accelerometer, a reference measurement sensor and a temperature sensor. The three-axis gravity accelerometer measures acceleration component signals in three mutually orthogonal directions, and the reference measurement sensor generates a signal that varies with rotation and is not affected by vibration or shock to serve as a reference signal. The temperature sensor measures the temperature in the apparatus to compensate the temperature effect of the gravity accelerometers. The measurement circuit acquires output signals of the sensors and performs cross-correlation processing on the accelerometer components using the reference signal to extract gravity acceleration signals so as to eliminate centrifugal acceleration, vibration, shock and other interferences generated by rotation. The non-interference gravity acceleration signals is used for calculating an inclination angle and a toolface angle of a drilling tool in the rotating state.

公开(公告)号：US20180216453A1

公开(公告)日：2018-08-02

申请号：US15871383

申请日：2018-01-15

申请人： FLUIDION SAS

发明人： Dan E. Angelescu

IPC分类号： E21B47/022 ,  E21B47/10 ,  E21B49/08 ,  F16K99/00 ,  G01N1/12 ,  G01N1/16 ,  G01N1/20 ,  G01N1/40 ,  G01N11/02 ,  G01V1/04 ,  G01V1/38 ,  G01V1/42 ,  G01V15/00

CPC分类号： E21B47/02208 ,  B01L2200/027 ,  B01L2400/0683 ,  E21B34/063 ,  E21B41/00 ,  E21B47/1015 ,  E21B49/081 ,  F16K99/003 ,  F16K99/0059 ,  G01N1/12 ,  G01N1/16 ,  G01N1/2042 ,  G01N1/40 ,  G01N11/02 ,  G01N2001/1031 ,  G01N2001/1056 ,  G01V1/04 ,  G01V1/3852 ,  G01V1/42 ,  G01V15/00

摘要： An electrically passive device and method for in-situ acoustic emission, and/or releasing, sampling and/or measuring of a fluid or various material(s) is provided. The device may provide a robust timing mechanism to release, sample and/or perform measurements on a predefined schedule, and, in various embodiments, emits an acoustic signal sequence(s) that may be used for triangulation of the device position within, for example, a hydrocarbon reservoir or a living body.

公开(公告)号：US20180216452A1

公开(公告)日：2018-08-02

申请号：US15748530

申请日：2015-09-10

申请人： Halliburton Energy Services, Inc.

发明人： Carl J. Cramm ,  Andrew John Cuthbert ,  Joseph Eli Hess

IPC分类号： E21B47/022 ,  E21B47/10 ,  G01V1/30 ,  G01V1/28 ,  G01V1/42

CPC分类号： E21B47/02208 ,  E21B44/00 ,  E21B47/101 ,  G01V1/284 ,  G01V1/305 ,  G01V1/42 ,  G01V1/52 ,  G01V2200/16 ,  G01V2210/1234 ,  G01V2210/1299 ,  G01V2210/1429 ,  G01V2210/6222 ,  G01V2210/646

摘要： In one or more embodiments, a system comprises a first (target) wellbore disposed in a formation, the first wellbore having a pressure imbalance therein causing an influx of formation fluids, a second (relief) wellbore disposed in the formation, a drill string disposed in the second wellbore, the drill string comprising a drill bit and a logging tool, and a wellbore ranging module comprising a processor and memory, the wellbore ranging module coupled to the drill string. The logging tool is configured to detect acoustic energy originating from the influx in the first wellbore and generate one or more signals associated with the detected acoustic energy. The wellbore ranging module is configured to receive, from the logging tool, the one or more signals associated with the detected acoustic energy and determine, using the received signals, a direction from the drill bit to the influx of the first wellbore.

公开(公告)号：US20180156028A1

公开(公告)日：2018-06-07

申请号：US15872487

申请日：2018-01-16

申请人： Halliburton Energy Services, Inc.

发明人： Hsu-Hsiang Wu ,  Yijing Fan ,  Akram Ahmadi Kalateh Ahmad

IPC分类号： E21B47/022 ,  E21B33/13 ,  G01V3/34 ,  G01V3/30

CPC分类号： E21B47/02216 ,  E21B33/13 ,  G01V3/30 ,  G01V3/34

摘要： A method includes cementing a target well with a target well cement comprising resistive cement having resistivity that is greater than a resistivity of a subsurface formation through which the target well passes. The method includes injecting an injected signal into a conductive casing material at least partially surrounded by the target well cement. The method also includes receiving a resulting signal that results from the injecting at a signal receiver disposed within at least one of the target well and a drilling well separated from the target well.

公开(公告)号：US20180142547A1

公开(公告)日：2018-05-24

申请号：US15573773

申请日：2016-05-14

申请人： Scientific Drilling International, Inc.

发明人： Clinton MOSS ,  Douglas RIDGWAY ,  Troy MARTIN

IPC分类号： E21B47/022 ,  E21B47/024 ,  E21B47/026

CPC分类号： E21B47/02216 ,  E21B17/028 ,  E21B47/02224 ,  E21B47/024 ,  E21B47/026

摘要： A system may include a surface coil positioned at a known surface position, the surface coil including at least one loop of a conductor. The system may also include a coil controller coupled to the surface coil and adapted to inject a current into the surface coil such that the surface coil generates an electromagnetic field. In addition, the system may include a sensor package positioned within a wellbore adapted to detect the electromagnetic field and determine the position of the wellbore relative to the surface coil.

公开(公告)号：US20180058849A1

公开(公告)日：2018-03-01

申请号：US15692703

申请日：2017-08-31

申请人： Institute of Geology and Geophysics, Chinese Academy of Sciences

发明人： Yuntao SUN ,  Wenxuan CHEN ,  Wenxiu ZHANG ,  Yongyou YANG ,  Jian ZHENG

IPC分类号： G01B21/22 ,  E21B47/022

CPC分类号： G01B21/22 ,  E21B7/04 ,  E21B47/022 ,  G01P15/18

摘要： A near-bit dynamic well deviation angle measurement apparatus includes a circuit board and 2n+1 accelerometers. One accelerometer is installed in an axial direction of a drilling tool and forms n sets of three-axis orthogonal installation together with other 2n accelerometers. The accelerometer installed in the axial direction measures Az′, and the remaining accelerometers respectively measure n X-axis radial components and n Y-axis radial components corresponding to the n X-axis radial components. A filter and a data processing unit are integrated on the circuit board. The circuit board acquires signals in which the components are eliminated by the accelerators in real time, and further high-frequency vibration and impact interference in the signals are filtered out by using the filter to obtain non-interference gravitational acceleration components Ax, Ay and Az, and further a well deviation angle is calculated.

公开(公告)号：US09863242B2

公开(公告)日：2018-01-09

申请号：US14761168

申请日：2014-01-14

申请人： ENI S.p.A.

发明人： Paolo Ferrara ,  Axel Turolla ,  Massimo Zampato

IPC分类号： G01V1/48 ,  E21B49/00 ,  E21B47/06 ,  E21B10/00 ,  E21B10/42 ,  H04R17/00 ,  E21B47/022

CPC分类号： E21B49/006 ,  E21B10/00 ,  E21B10/42 ,  E21B47/02208 ,  E21B47/06 ,  G01V1/48 ,  H04R17/00

摘要： A method for revealing anomalous discontinuity interfaces in pore pressures in non-drilled geological formations and an implementing system. The method includes generating, by an electroacoustic transducer, first pressure sound waves and receiving a reflected signal of such first pressure sound waves generated by at least one discontinuity interface due to passage from first to second different geological formations situated successively along an emission direction of the electroacoustic transducer; calculating speed of the first pressure sound waves generated and distance between the electroacoustic transducer and the at least one discontinuity interface; generating, by the electroacoustic transducer, second pressure sound waves and revealing the electrical impedance induced at terminals of the electroacoustic transducer; estimating, based on the electrical impedance revealed, plural parameters characteristic of the first and second geological formation; estimating pressure of the second geological formation based on the sound speed and distance calculated and the plural characteristic parameters estimated.

公开(公告)号：US20180003031A1

公开(公告)日：2018-01-04

申请号：US15536101

申请日：2016-02-02

申请人： HALLIBURTON ENERGY SERVICES, INC.

发明人： Robello Samuel

IPC分类号： E21B47/022 ,  G01V11/00 ,  G01B21/20 ,  E21B7/04 ,  E21B47/18

CPC分类号： E21B47/022 ,  E21B7/04 ,  E21B47/0006 ,  E21B47/18 ,  G01B21/20 ,  G01V11/002

摘要： A disclosed borehole curvature logging system includes: a drill string having a bottomhole assembly (BHA) with sensors providing actual deformation and bending moment measurements as a function of BHA position at spaced-apart intervals on the BHA; a processing system that retrieves said actual measurements and responsively generates a log of borehole curvature; and a user interface that displays the borehole curvature log. The processing system implements a method that generates the log by: providing an estimated borehole trajectory; deriving predicted deformation and bending moment measurements based on the estimated borehole trajectory; determining an error between the predicted measurements and the actual measurements; updating the estimated borehole trajectory to reduce the error; repeating said deriving, determining, and updating to refine the estimated borehole trajectory; and converting the estimated borehole trajectory into a borehole curvature log.