EA201892717A1 - Скважина с акустическим или электромагнитным передатчиком, активируемым давлением - Google Patents

Скважина с акустическим или электромагнитным передатчиком, активируемым давлением

Info

Publication number
EA201892717A1
EA201892717A1 EA201892717A EA201892717A EA201892717A1 EA 201892717 A1 EA201892717 A1 EA 201892717A1 EA 201892717 A EA201892717 A EA 201892717A EA 201892717 A EA201892717 A EA 201892717A EA 201892717 A1 EA201892717 A1 EA 201892717A1
Authority
EA
Eurasian Patent Office
Prior art keywords
barrier
pressure
valve
transmitter
acoustic
Prior art date
Application number
EA201892717A
Other languages
English (en)
Inventor
Шон Комптон Росс
Лесли Дейвид Джарвис
Original Assignee
Метроль Текнолоджи Лимитед
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Метроль Текнолоджи Лимитед filed Critical Метроль Текнолоджи Лимитед
Publication of EA201892717A1 publication Critical patent/EA201892717A1/ru

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure
    • E21B47/07—Temperature
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/10—Locating fluid leaks, intrusions or movements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Measuring Fluid Pressure (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Pipeline Systems (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Earth Drilling (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

Скважина, содержащая устройство, активируемое давлением, подвергаемое давлению в кольцевом пространстве над барьером между верхним трубчатым элементом и стволом скважины. Акустический или электромагнитный (ЭМ) передатчик соединен с устройством, активируемым давлением, и выполнен с возможностью передачи сигнала управления на соответствующий приемник под барьером для управления клапаном. В экстренной ситуации в определенных вариантах осуществления обеспечено быстрое падение давления в кольцевом пространстве путем активации передатчика для закрытия клапана под барьером, тем самым изолируя скважину под барьером. В передатчик могут быть запрограммированы различные стандартные состояния, такие как передача сигнала "сохранения открытого состояния" на приемник, управляющий клапаном, который выполнен с возможностью закрытия, если данный сигнал не принят. Дополнительный ЭМ или акустический передатчик может быть соединен с клапаном для отправки информации из области под барьером в область над барьером, такой как данные о давлении или состояние клапана.
EA201892717A 2016-05-26 2017-05-26 Скважина с акустическим или электромагнитным передатчиком, активируемым давлением EA201892717A1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1609288.4A GB2550864B (en) 2016-05-26 2016-05-26 Well
PCT/GB2017/051520 WO2017203290A1 (en) 2016-05-26 2017-05-26 Well with pressure activated acoustic or electromagnetic transmitter

Publications (1)

Publication Number Publication Date
EA201892717A1 true EA201892717A1 (ru) 2019-05-31

Family

ID=56410584

Family Applications (1)

Application Number Title Priority Date Filing Date
EA201892717A EA201892717A1 (ru) 2016-05-26 2017-05-26 Скважина с акустическим или электромагнитным передатчиком, активируемым давлением

Country Status (8)

Country Link
US (1) US12060766B2 (ru)
EP (1) EP3464801B1 (ru)
AU (1) AU2017271008B2 (ru)
BR (1) BR112018074170B1 (ru)
EA (1) EA201892717A1 (ru)
GB (1) GB2550864B (ru)
MY (1) MY195807A (ru)
WO (1) WO2017203290A1 (ru)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2550865B (en) 2016-05-26 2019-03-06 Metrol Tech Ltd Method of monitoring a reservoir
GB201609285D0 (en) 2016-05-26 2016-07-13 Metrol Tech Ltd Method to manipulate a well
GB2550867B (en) 2016-05-26 2019-04-03 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using temperature sensor modules connected by a matrix
GB2550863A (en) 2016-05-26 2017-12-06 Metrol Tech Ltd Apparatus and method to expel fluid
GB2550862B (en) 2016-05-26 2020-02-05 Metrol Tech Ltd Method to manipulate a well
GB2550868B (en) 2016-05-26 2019-02-06 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using temperature sensor modules comprising a crystal oscillator
GB2550866B (en) 2016-05-26 2019-04-17 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using semiconductor elements
GB2550869B (en) 2016-05-26 2019-08-14 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using resistive elements
GB201609289D0 (en) 2016-05-26 2016-07-13 Metrol Tech Ltd Method of pressure testing
GB2550864B (en) 2016-05-26 2020-02-19 Metrol Tech Ltd Well
NO344774B1 (en) * 2017-10-10 2020-04-27 Petroleum Technology Co As Downhole device with signal transmitter
US10662762B2 (en) * 2017-11-02 2020-05-26 Saudi Arabian Oil Company Casing system having sensors
CN110005371B (zh) 2019-05-20 2020-04-17 中国石油大学(华东) 一种全电驱动的井下安全阀
CN110424925A (zh) * 2019-08-03 2019-11-08 中国石油大学(华东) 一种电控磁耦合井下安全阀
US11118443B2 (en) 2019-08-26 2021-09-14 Saudi Arabian Oil Company Well completion system for dual wellbore producer and observation well
CN110644971B (zh) * 2019-10-21 2024-09-13 长沙矿山研究院有限责任公司 在上向深孔内注浆埋设监测传感器的装置及方法
CN111042765B (zh) * 2020-01-16 2021-11-16 中国海洋石油集团有限公司 一种井下流量控制阀
CN111322033A (zh) * 2020-04-08 2020-06-23 黄淮学院 一种基于声音识别的井下阀门控制系统和方法
US11286747B2 (en) 2020-08-06 2022-03-29 Saudi Arabian Oil Company Sensored electronic valve for drilling and workover applications
EP4006299A1 (en) 2020-11-30 2022-06-01 Services Pétroliers Schlumberger Method and system for automated multi-zone downhole closed loop reservoir testing
US20230167722A1 (en) * 2021-11-29 2023-06-01 Saudi Arabian Oil Company Downhole perforating tool systems and methods
CN114439468A (zh) * 2022-01-17 2022-05-06 中国海洋石油集团有限公司 一种水下井口的套管环空压力实时监测系统
EP4390056A1 (en) * 2022-12-20 2024-06-26 Services Pétroliers Schlumberger Closed-chamber well testing
US12129748B1 (en) 2023-04-05 2024-10-29 Saudi Arabian Oil Company Electrical submersible pump Y-tool with permanent coiled tubing plug and millable ball valve

Family Cites Families (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619180A (en) 1948-05-15 1952-11-25 Roy A Smith Apparatus for pressurizing liquid and cleaning well holes therewith
US3020961A (en) 1957-12-16 1962-02-13 Jersey Prod Res Co Liquid chemical injector for use in wells
FR2681461B1 (fr) 1991-09-12 1993-11-19 Geoservices Procede et agencement pour la transmission d'informations, de parametres et de donnees a un organe electro-magnetique de reception ou de commande associe a une canalisation souterraine de grande longueur.
US5273112A (en) 1992-12-18 1993-12-28 Halliburton Company Surface control of well annulus pressure
WO1994029749A1 (en) 1993-06-04 1994-12-22 Gas Research Institute, Inc. Method and apparatus for communicating signals from encased borehole
US5704426A (en) * 1996-03-20 1998-01-06 Schlumberger Technology Corporation Zonal isolation method and apparatus
US6041864A (en) * 1997-12-12 2000-03-28 Schlumberger Technology Corporation Well isolation system
BR9915387A (pt) 1998-11-18 2001-11-13 Schlumberger Technology Corp Aparelho de múltiplas válvulas, coluna decompletação, equipamento, processo e sistemapara uso em um poço com uma pluralidade de zonas
US6131462A (en) 1998-12-18 2000-10-17 Delaware Capital Formation, Inc. Pressure/temperature transducer with improved thermal coupling and enhanced transient response
US6173772B1 (en) * 1999-04-22 2001-01-16 Schlumberger Technology Corporation Controlling multiple downhole tools
US6357525B1 (en) 1999-04-22 2002-03-19 Schlumberger Technology Corporation Method and apparatus for testing a well
US6347666B1 (en) * 1999-04-22 2002-02-19 Schlumberger Technology Corporation Method and apparatus for continuously testing a well
US6840316B2 (en) 2000-01-24 2005-01-11 Shell Oil Company Tracker injection in a production well
US6598682B2 (en) * 2000-03-02 2003-07-29 Schlumberger Technology Corp. Reservoir communication with a wellbore
US6494616B1 (en) 2000-08-04 2002-12-17 Regents Of The University Of Minnesota Multiplexed sensor array
US6592254B2 (en) 2001-06-26 2003-07-15 Mamac Systems, Inc. Multiple point averaging duct temperature sensor
US6807324B2 (en) 2002-05-21 2004-10-19 Weatherford/Lamb, Inc. Method and apparatus for calibrating a distributed temperature sensing system
US6837310B2 (en) 2002-12-03 2005-01-04 Schlumberger Technology Corporation Intelligent perforating well system and method
GB2398805B (en) * 2003-02-27 2006-08-02 Sensor Highway Ltd Use of sensors with well test equipment
US7004252B2 (en) 2003-10-14 2006-02-28 Schlumberger Technology Corporation Multiple zone testing system
US8517113B2 (en) 2004-12-21 2013-08-27 Schlumberger Technology Corporation Remotely actuating a valve
US20080156482A1 (en) 2005-05-12 2008-07-03 Alekseyevich Vladimir Gubar Method for the Treatment of the Obstructed Zones of the Parent Rock of Hydrocarbon-Producing Strata Adjacent to a Gas and Oil Well Drilling Zone in Order to Increase Productivity
US8620636B2 (en) 2005-08-25 2013-12-31 Schlumberger Technology Corporation Interpreting well test measurements
US20070236215A1 (en) 2006-02-01 2007-10-11 Schlumberger Technology Corporation System and Method for Obtaining Well Fluid Samples
US7523785B2 (en) 2006-03-09 2009-04-28 Maersk Olie Og Gas A/S System for injecting a substance into an annular space
US7735555B2 (en) 2006-03-30 2010-06-15 Schlumberger Technology Corporation Completion system having a sand control assembly, an inductive coupler, and a sensor proximate to the sand control assembly
WO2007122758A1 (ja) 2006-04-19 2007-11-01 Sharp Kabushiki Kaisha バックライト装置、及びこれを用いた表示装置
US7703317B2 (en) 2006-09-18 2010-04-27 Schlumberger Technology Corporation Method and apparatus for sampling formation fluids
GB2454895B (en) * 2007-11-22 2012-01-11 Schlumberger Holdings Flow diverter for drilling
WO2009089416A2 (en) 2008-01-11 2009-07-16 Services Petroliers Schlumberger Zonal testing with the use of coiled tubing
DK178742B1 (da) 2008-03-06 2016-12-19 Maersk Olie & Gas Fremgangsmåde og apparat til injicering af et eller flere behandlingsfluider nede i et borehul
EP2192262B1 (en) 2008-11-28 2012-11-14 Services Pétroliers Schlumberger Dump Bailer
DE102010014415B4 (de) 2009-04-08 2014-02-13 Geo-En Energy Technologies Gmbh Vorrichtung und Meßverfahren zur Messung einer unterirdischen Temperatur und Verwendung von Halbleitersensoren
US9062535B2 (en) * 2009-12-28 2015-06-23 Schlumberger Technology Corporation Wireless network discovery algorithm and system
WO2011090698A1 (en) 2009-12-28 2011-07-28 Services Petroliers Schlumberger Downhole communication system
US8302688B2 (en) 2010-01-20 2012-11-06 Halliburton Energy Services, Inc. Method of optimizing wellbore perforations using underbalance pulsations
WO2011119668A1 (en) * 2010-03-23 2011-09-29 Halliburton Energy Services Inc. Apparatus and method for well operations
US8561698B2 (en) 2010-06-14 2013-10-22 Schlumberger Technology Corporation Downhole fluid injection
US9051811B2 (en) 2010-12-16 2015-06-09 Baker Hughes Incorporated Barrier valve system and method of controlling same with tubing pressure
NO334525B1 (no) 2011-02-28 2014-03-31 Archer Norge As Framgangsmåte og apparat for lokal tilførsel av behandlingsfluid til et brønnparti
GB201108098D0 (en) * 2011-05-16 2011-06-29 Intelligent Well Controls Ltd Determining whether a wellbore cementation operation has been performed correctly
US8215164B1 (en) 2012-01-02 2012-07-10 HydroConfidence Inc. Systems and methods for monitoring groundwater, rock, and casing for production flow and leakage of hydrocarbon fluids
US20130299165A1 (en) 2012-05-10 2013-11-14 Bp Corporation North America Inc. Methods and systems for long-term monitoring of a well system during abandonment
WO2014022384A1 (en) 2012-07-31 2014-02-06 Schlumberger Canada Limited Dual barrier open water well completion systems
US20130133883A1 (en) 2012-08-16 2013-05-30 Tejas Research And Engineering, Llc Dual downhole pressure barrier with communication to verify
WO2014084807A1 (en) 2012-11-27 2014-06-05 Halliburton Energy Services, Inc. Wellbore bailer
EP2763335A1 (en) 2013-01-31 2014-08-06 Service Pétroliers Schlumberger Transmitter and receiver band pass selection for wireless telemetry systems
CN203531888U (zh) 2013-10-29 2014-04-09 沈阳工业大学通益科技有限公司 一种采油井多点温度及压力监测系统
US10100631B2 (en) 2013-12-10 2018-10-16 Schlumberger Technology Corporation Method of testing a barrier in a wellbore
US9759055B2 (en) * 2013-12-18 2017-09-12 Schlumberger Technology Corporation Formation fracturing and sampling methods
EP2886790A1 (en) 2013-12-18 2015-06-24 Welltec A/S Downhole deployment system for ejecting a tracer and/or taking a fluid sample
GB2522272A (en) 2014-01-21 2015-07-22 Tendeka As Downhole flow control device and method
US10094719B2 (en) 2014-02-18 2018-10-09 GSI Environmental, Inc. Devices and methods for measuring thermal flux and estimating rate of change of reactive material within a subsurface formation
MY181836A (en) * 2014-09-23 2021-01-08 Halliburton Energy Services Inc Well construction real-time telemetry system
US10132156B2 (en) 2014-11-03 2018-11-20 Quartzdyne, Inc. Downhole distributed pressure sensor arrays, downhole pressure sensors, downhole distributed pressure sensor arrays including quartz resonator sensors, and related methods
US10184334B2 (en) * 2014-12-11 2019-01-22 Schlumberger Technology Corporation Analyzing reservoir using fluid analysis
GB201505716D0 (en) * 2015-04-02 2015-05-20 Wardley Michael And Simpson Neil A Specification for downhole tool
GB201609286D0 (en) 2016-05-26 2016-07-13 Metrol Tech Ltd An apparatus and method for pumping fluid in a borehole
GB2550864B (en) 2016-05-26 2020-02-19 Metrol Tech Ltd Well
GB2550869B (en) 2016-05-26 2019-08-14 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using resistive elements
GB2550863A (en) 2016-05-26 2017-12-06 Metrol Tech Ltd Apparatus and method to expel fluid
GB201609289D0 (en) 2016-05-26 2016-07-13 Metrol Tech Ltd Method of pressure testing
GB2550862B (en) 2016-05-26 2020-02-05 Metrol Tech Ltd Method to manipulate a well
GB2550868B (en) 2016-05-26 2019-02-06 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using temperature sensor modules comprising a crystal oscillator
GB2550867B (en) 2016-05-26 2019-04-03 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using temperature sensor modules connected by a matrix
GB2550866B (en) 2016-05-26 2019-04-17 Metrol Tech Ltd Apparatuses and methods for sensing temperature along a wellbore using semiconductor elements
GB201609285D0 (en) 2016-05-26 2016-07-13 Metrol Tech Ltd Method to manipulate a well
GB2550865B (en) 2016-05-26 2019-03-06 Metrol Tech Ltd Method of monitoring a reservoir

Also Published As

Publication number Publication date
US20190128098A1 (en) 2019-05-02
EP3464801B1 (en) 2020-03-18
US12060766B2 (en) 2024-08-13
EP3464801A1 (en) 2019-04-10
GB2550864A (en) 2017-12-06
MY195807A (en) 2023-02-22
BR112018074170A2 (pt) 2019-03-06
AU2017271008A1 (en) 2019-01-03
WO2017203290A1 (en) 2017-11-30
AU2017271008B2 (en) 2022-03-03
BR112018074170B1 (pt) 2023-03-14
GB2550864B (en) 2020-02-19
GB201609288D0 (en) 2016-07-13

Similar Documents

Publication Publication Date Title
EA201892717A1 (ru) Скважина с акустическим или электромагнитным передатчиком, активируемым давлением
WO2014113280A3 (en) Bidirectional downhole isolation valve
EA201892747A1 (ru) Способ отслеживания коллектора
EA201370022A1 (ru) Предохранительный механизм для скважины,скважина, содержащая предохранительный механизм, и соответствующие способы
GB2495897A (en) Safety valve control system and method of use
MX2020012192A (es) Sistema de alarma de seguridad que comprende una etiqueta rfid.
MY174796A (en) Wireless activatable valve assembly
GB2521781A (en) Semi-autonomous insert valve for well system
WO2013003151A3 (en) Control of downhole safety devices
MY165078A (en) Autonomous downhole conveyance system
WO2014060722A3 (en) Flow control assembly
NZ733173A (en) Systems and methods for operating electrically-actuated coiled tubing tools and sensors
ATE545050T1 (de) Steuerung von unterirdischen sicherheitsventilen
MX359021B (es) Metodo y aparato para enviar un mensaje de indicacion.
MX2020003122A (es) Un pozo en una estructura geologica.
AU2017442107A8 (en) Electronic initiator sleeves and methods of use
GB201312529D0 (en) Gate Valve Assembly
GB2550789A (en) Reducing noise in a distributed acoustic sensing system downhole
SA520420741B1 (ar) التحكم في التدفق الداخلي للماء في حفرة بئر
WO2015035430A3 (en) Rock wall closure detection device
DE602005020053D1 (de) Selbstgesteuerte magnetventileinrichtung
WO2019132977A8 (en) Electromagnetic telemetry using active electrodes
GB2561762A (en) Remote actuation of downhole sensors
WO2011119448A3 (en) Remotely operated isolation valve
MY191336A (en) Communication system for an offshore drilling system