公开(公告)号：US11970937B2

公开(公告)日：2024-04-30

申请号：US18099764

申请日：2023-01-20

Applicant: MWDPlanet and Lumen Corporation

Inventor： Borys Kucherenko ,  Mariya Kucherenko ,  Derek Belle

IPC: H04L27/18 ,  E21B21/08 ,  E21B47/13 ,  E21B47/18 ,  H04L25/02 ,  H04L27/02 ,  H04L27/10 ,  H04L27/34 ,  E21B47/0228 ,  E21B47/06 ,  E21B47/07 ,  E21B49/00

CPC classification number: E21B47/13 ,  E21B21/08 ,  E21B47/18 ,  H04L25/028 ,  H04L27/02 ,  H04L27/10 ,  H04L27/18 ,  H04L27/34 ,  E21B47/0228 ,  E21B47/06 ,  E21B47/07 ,  E21B49/00

Abstract: A unified mud-pulse (MP)-electromagnetic (EM) telemetry assembly and a downhole telemetry tool are provided including a downhole EM telemetry transmitter apparatus. The EM telemetry transmitter apparatus comprises a modulator configured to transmit at least one EM signal through transmission medium. The modulator comprises a first reactive circuit and a second reactive circuit, and a plurality of switches controlled by a controller to alternatingly switch the modulator between a first configuration and a second configuration. The EM signals are transmitted by passing one of the reactive circuits and bypassing the other reactive circuit.

公开(公告)号：US20240102374A1

公开(公告)日：2024-03-28

申请号：US17952844

申请日：2022-09-26

Applicant: Halliburton Energy Services, Inc.

Inventor： Xiang WU ,  Yi Jing Fan ,  Jing Jin

IPC: E21B44/00 ,  E21B47/0228 ,  E21B47/085 ,  E21B49/00

CPC classification number: E21B44/00 ,  E21B47/0228 ,  E21B47/085 ,  E21B49/005 ,  E21B2200/20

Abstract: Aspects of the subject technology relate to systems, methods, and computer-readable media for identifying a borehole correction factor for determining a true resistivity by selecting a model to apply in identifying the borehole correction factor and applying the model to an apparent resistivity to identify the borehole correction factor. To perform borehole correction, a multiplicative coefficient is needed to apply to the apparent resistivity. A database of this multiplicative coefficient, called the borehole correction factor, is generated based on the borehole correction model. The technology described herein allows operators to avoid time-consuming variable borehole diameter sweeps and complex borehole diameter inversion current used in resistivity logging software.

公开(公告)号：US11933158B2

公开(公告)日：2024-03-19

申请号：US17374632

申请日：2021-07-13

Applicant: MOTIVE DRILLING TECHNOLOGIES, INC.

Inventor： Todd W. Benson ,  Teddy C. Chen

IPC: E21B44/00 ,  E21B7/04 ,  E21B7/06 ,  E21B43/30 ,  E21B44/02 ,  E21B45/00 ,  E21B47/0228 ,  G05B19/048

CPC classification number: E21B44/00 ,  E21B7/04 ,  E21B7/06 ,  E21B43/30 ,  E21B44/02 ,  E21B45/00 ,  E21B47/0228 ,  G05B19/048 ,  G05B2219/45129

Abstract: System and method for controlling the drilling of a second wellbore in close proximity to a first well bore. A computer system obtains information regarding a previously drilled wellbore, as well as information regarding a second wellbore being drilled. Using information obtained from one or more magnetic sensors, the computer system determines an optimal target path for continued drilling of the second wellbore and may issue one or more control signals to one or more control systems coupled to a drilling rig to automatically drill in accordance with the selected path. The computer system can generate a plurality of potential paths using one or more cost curves and/or value curves to determine the optimal path for the second wellbore.

公开(公告)号：US20240003243A1

公开(公告)日：2024-01-04

申请号：US18457139

申请日：2023-08-28

Applicant: Gunnar LLLP

Inventor： Clinton Moss

IPC: E21B47/0228 ,  E21B47/00 ,  E21B44/00 ,  G01D5/14 ,  E21B17/00 ,  E21B7/04

CPC classification number: E21B47/0228 ,  E21B47/00 ,  E21B44/00 ,  G01D5/14 ,  E21B17/00 ,  E21B7/04

Abstract: Methods, devices and systems are disclosed for magnetically ranging while drilling with a coiled tubing unit or drill pipe by way of a an electrically conducive but environmentally electrically insulated wire installed through a coiled tubing spool or drill pipe complete with electrically insulative subs in the coiled tubing bottom hole assembly or drill pipe. The method and systems allow for the injection of excitation current into the formation by way of selectively electrifying various drill stem components, thereby facilitating current collection on a target tubular which radially emanates a magnetic field about the target well tubular(s). The method and devices allow for the construction of complex downhole current injection configurations which allow for modification of the bottom hole assembly to maximize target well signal generation in the presence of adverse environmental conditions.

公开(公告)号：US11852012B2

公开(公告)日：2023-12-26

申请号：US18126001

申请日：2023-03-24

Applicant: Merlin Technology, Inc.

Inventor： Rudolf Zeller ,  Gary Garrabrant ,  Timothy Bayliss ,  Scott Phillips

IPC: E21B47/13 ,  E21B47/024 ,  E21B47/0228 ,  E21B7/04 ,  E21B47/107

CPC classification number: E21B47/13 ,  E21B7/046 ,  E21B47/024 ,  E21B47/0228 ,  E21B47/107

Abstract: A transmitter for inground use controls a depth signal transmit power in relation to a data signal transmit power such that one reception range of the depth signal at least approximately matches another, different reception range of the data signal. A portable device can form a system with the transmitter in which the portable device scans a plurality of frequencies within at least one low frequency depth signal range to measure the electromagnetic noise at each one of the plurality of frequencies and identify at least one of the frequencies as a potential depth frequency for the transmitter. The portable device can include a dual mode filter having a rebar mode and a normal mode filter. The depth signal frequency is dynamically positionable in relation to low frequency noise.

公开(公告)号：US20230393296A1

公开(公告)日：2023-12-07

申请号：US18033960

申请日：2021-11-22

Applicant: CHINA OILFIELD SERVICES LIMITED

Inventor： Xi LUO ,  Guoyu LI ,  Bo DANG ,  Caihui QIN ,  Jinhai ZHAI ,  Aiyong LI ,  Xizhou YUE ,  Mingxue MA ,  Xinbiao JI ,  Yiyi WANG

IPC: G01V3/10 ,  E21B47/0228

CPC classification number: G01V3/10 ,  E21B47/0228

Abstract: An adjacent well detection apparatus, method and system. The adjacent well detection apparatus is arranged on a drill collar of a first well. The adjacent well detection apparatus includes a transmitting probe and receiving probes. The apparatus includes: the transmitting probe, configured to generate a primary magnetic field according to a bipolar transient pulse signal applied to the transmitting probe, wherein a change in the primary magnetic field can generate a second magnetic field on a sleeve of an adjacent second well; and the receiving probes, configured to generate an induced electromotive force according to the second magnetic field, wherein the induced electromotive force is used for acquiring relative distance information and orientation information of the adjacent well.

公开(公告)号：US11781421B2

公开(公告)日：2023-10-10

申请号：US17482045

申请日：2021-09-22

Applicant: Gunnar LLLP

Inventor： Clinton Moss

IPC: E21B17/00 ,  E21B44/00 ,  E21B47/00 ,  E21B7/04 ,  G01D5/14 ,  E21B47/0228

CPC classification number: E21B47/0228 ,  E21B7/04 ,  E21B17/00 ,  E21B44/00 ,  E21B47/00 ,  G01D5/14

Abstract: Methods, devices and systems are disclosed for magnetically ranging while drilling with a coiled tubing unit or drill pipe by way of a an electrically conducive but environmentally electrically insulated wire installed through a coiled tubing spool or drill pipe complete with electrically insulative subs in the coiled tubing bottom hole assembly or drill pipe. The method and systems allow for the injection of excitation current into the formation by way of selectively electrifying various drill stem components, thereby facilitating current collection on a target tubular which radially emanates a magnetic field about the target well tubular(s). The method and devices allow for the construction of complex downhole current injection configurations which allow for modification of the bottom hole assembly to maximize target well signal generation in the presence of adverse environmental conditions.

公开(公告)号：US11719048B2

公开(公告)日：2023-08-08

申请号：US17060498

申请日：2020-10-01

Applicant: Schlumberger Technology Corporation

Inventor： Luis Eduardo DePavia ,  Jiuping Chen ,  Liang Sun ,  Richard Hunter

IPC: E21B7/04 ,  E21B7/06 ,  E21B47/0228 ,  E21B49/08 ,  E21B7/10 ,  E21B47/13

CPC classification number: E21B7/04 ,  E21B7/068 ,  E21B7/10 ,  E21B47/0228 ,  E21B47/13 ,  E21B49/087

Abstract: A method for steering a downhole tool includes receiving an electromagnetic (EM) signal from the downhole tool. The downhole tool is in a wellbore in a formation. The EM signal comprises a gap voltage and a gap current that are measured across a gap sub in the downhole tool. The method also includes determining a gap impedance based at least partially upon the gap voltage and the gap current. The method also includes determining a first formation resistivity at a first location in the wellbore based at least partially upon the gap impedance. The method also includes steering the downhole tool based at least partially upon the first formation resistivity.

公开(公告)号：US11668188B2

公开(公告)日：2023-06-06

申请号：US17318840

申请日：2021-05-12

Applicant: Hunting Titan, Inc.

Inventor： Gene McBride

IPC: E21B47/092 ,  E21B43/119 ,  E21B47/0228 ,  E21B47/024 ,  E21B43/114 ,  E21B43/117 ,  G01V3/28

CPC classification number: E21B47/092 ,  E21B43/114 ,  E21B43/117 ,  E21B43/119 ,  E21B47/024 ,  E21B47/0228 ,  G01V3/28

Abstract: A method, system, and apparatus for determining the location of a tool traveling down a wellbore by measuring a first borehole magnetic anomaly with respect to time at two known locations on a tool, comparing the time difference between the two measurements, then calculating the velocity of the tool based on the comparison and then further calculating the distance traveled by the tool in the wellbore based on the velocity calculation.

公开(公告)号：US11668185B2

公开(公告)日：2023-06-06

申请号：US17180083

申请日：2021-02-19

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Guodong Zhan ,  Timothy Eric Moellendick ,  Chinthaka P. Gooneratne ,  Jianhui Xu ,  Arturo Magana Mora

IPC: E21B47/017 ,  E21B47/13 ,  E21B10/573 ,  E21B12/02 ,  E21B47/0228 ,  E21B47/06

CPC classification number: E21B47/017 ,  E21B10/5735 ,  E21B12/02 ,  E21B47/0228 ,  E21B47/06 ,  E21B47/13

Abstract: An instrumented cutter including a polycrystalline diamond table bonded to a substrate with a sensor, for monitoring the condition of the polycrystalline compact diamond table, embedded in the substrate. Further the instrumented cutter includes a wireless transmitter equipped with a power supply to power to the wireless transmitter.