WO2014068581A2 - Système à nano-robots et procédés de diagraphie des sondages et de mesures de puits de forage - Google Patents

Système à nano-robots et procédés de diagraphie des sondages et de mesures de puits de forage Download PDF

Info

Publication number
WO2014068581A2
WO2014068581A2 PCT/IN2007/000556 IN2007000556W WO2014068581A2 WO 2014068581 A2 WO2014068581 A2 WO 2014068581A2 IN 2007000556 W IN2007000556 W IN 2007000556W WO 2014068581 A2 WO2014068581 A2 WO 2014068581A2
Authority
WO
WIPO (PCT)
Prior art keywords
nano
robot
robots
formation
properties
Prior art date
Application number
PCT/IN2007/000556
Other languages
English (en)
Inventor
Pratyush Singh
Sumit Bhat
Original Assignee
Halliburton Offshore Services, Inc
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 Halliburton Offshore Services, Inc filed Critical Halliburton Offshore Services, Inc
Publication of WO2014068581A2 publication Critical patent/WO2014068581A2/fr

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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • 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
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • 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
    • E21B47/138—Devices entrained in the flow of well-bore fluid for transmitting data, control or actuation signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
    • G01V11/002—Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant

Definitions

  • This invention relates to nano-robots system and methods for well logging and borehole measurements which are useful in reducing associated operating costs.
  • LWD Logging While Drilling
  • MWD Measurement While Drilling
  • borehole direction parameters such as inclination and azimuth direction
  • Formation properties such as porosity, permeability, resistivity, hydrocarbon content, to name just a few, are measured to help determine whether the well might be productive.
  • Measuring properties of fractures, where the fractures are created to increase oil flow, is also of utility in determining productivity of a well.
  • Fig. 1 illustrates a nano-robot according to an embodiment of the present invention.
  • Fig. 2 illustrates a well site with a nano-robot injector according to an embodiment of the present invention.
  • Fig. 3 illustrates a nano-robot injector according to an embodiment of the present invention.
  • Fig. 4 illustrates a method according to an embodiment of the present invention.
  • This invention teaches the use of nano-robots in the areas of well logging and measurement, which may be of utility in reducing operating costs associated with well logging and measurement.
  • Fig. 1 illustrates a robotic-type device with applications in oil and gas well technology. Such an embodiment may be referred to as a nano-robot.
  • nano-robot is usually used to denote one billionth of some unit, the term nano-robot is not meant to imply that embodiments are limited to a size not greater than one billionth of some typical unit, such as a meter. Rather, the prefix nano in nano-robot is used merely to denote that some embodiments may be relatively small.
  • a nano-robot may be injected into drilling mud or completion fluid (or other viscous fluid) to provide data, such as well temperature, directional parameters of a drill, and other petrophysical parameters.
  • an embodiment nano- robot may be designed small enough to circulate through the drilling mud to collect such data, which may be stored or transmitted.
  • an embodiment nano-robot may be designed small enough so as to invade a formation or fracture to provide data of interest. Such possible applications are described in more detail later.
  • controller 104 within outer-shield 102 are functional units (components): controller 104; sensors 105 and 106; fins 108 and 110; motors 112, 114, 116, and 118; transceiver 120; antenna 122, electrodes 124 and 125; and power regulator circuit 126.
  • outer-shield 102 may be spherical in shape for some embodiments. As is well known, a sphere has the largest volume to surface area ratio. However, other embodiments may have an outer-shell having a geometric shape other than a sphere.
  • outer-shield 102 may comprise one or more alloys of carbon.
  • a passive diamond material may be of utility due to its high surface energy and strong hydrophobicity, as well as chemical inertness. A passive diamond has a cage-like structure created from bonding nano-carbon particles to give a much higher strength than diamond. Controller 104 provides control and communication to some or all of the various components in a nano-robot.
  • Controller 104 may also include memory to store or buffer data received or sent to some or all of the various components. Controller 104 may be programmable, running under software or firmware instructions. Electrodes 124 and 125 comprise planar metal strips or plates used to generate electrical power from ions in the surrounding mud or fluid. For some embodiments, electrodes 124 and 125 may be conformal with outer-shield 102. There may be a number of such electrodes placed about outer-shield 102, but for simplicity only electrodes 124 and 125 are illustrated in Fig. 1.
  • electrical power used to generate thrust may be provided by characteristics other than a potential difference due to the ions. For example, a temperature difference, or a pressure difference, between two plates may be utilized. In some embodiments, a single plate (which may have a nonconductive interior) having two sides (faces) may be used, so that the generated electrical power for the thrust may generated as a result of a potential difference, a temperature difference, or a pressure difference between the first side of the plate and the second side of the plate.
  • Power regulator circuit 126 provides voltage regulation, and includes components, such as for example capacitors, for storing charge. Such stored charge may be generated when electrodes 124 and 125 are subject to an ionic imbalance, such as when the nano-robot embodiment is in a salt dome. The stored charge may be depleted when the nano-robot embodiment is not in a zone that has an ionic imbalance, or when extra power is needed for quick steering or propulsion. In addition to power generated from electrodes 124 and 125, a battery, fuel cell, or other power generating device may be employed. Some embodiments may not employ electrodes.
  • Motors 112, 114, 116, and 118 provide thrust, either separately or in combination, to propel the nano-robot.
  • a motor may comprise a propeller.
  • a motor may pump out fluid to provide thrust, or a motor may comprise a flexible membrane to push against the mud.
  • Outer-shield 102 is dashed about these motors to indicate that there may be an opening at the motor positions, or that outer-shield 102 may be removable at these positions to allow propellers to extend from the motors.
  • the embodiment of Fig. 1 explicitly shows four motors, but a different number of motors may be employed in other embodiments. Some embodiments may utilize mud circulation to move.
  • Sequencing the thrusting action of motors 112, 114, 116, and 118 may provide some directional thrusts to steer the nano-robot. For example, synchronizing the thrusts of motors 116 and 118, but keeping motors 112 and 114 off, will help steer the nano-robot to the right (with respect to the illustration of Fig.l). Fins 108 and 110 may also aid in steering. Fins 108 and 110 may slide out of their respective holders, 128 and 130. For some embodiments, some or all of fins 108 and 110 may extend outside of outer-shield 102 up to a fraction, e.g., 25% for some embodiments, of their length when used for steering.
  • motors 114 and 116 may thrust synchronously with fins 108 and 110 extended to 25% of their length, but where motors 112 and 118 are off.
  • motors 112 and 118 are off.
  • only two fins are explicitly illustrated in Fig. 1, but in practice, more fins may be included in an embodiment.
  • the fins may also provide additional functions.
  • fins 108 and 110 may extend outside of outer-shield 102 to a fraction of their length, greater than for the case when used for steering, when the nano-robot is to invade a formation. Extending the fins when invading a formation may help prevent the nano-robot from re-entering the borehole.
  • the fins may extend up to 75% of their length when a nano-robot is to embed itself in a formation. Other embodiments may make use of a different fractional amount of fin extension. For such an application, the fins may help in embedding the nano- robot into small porous channels for the formation.
  • Sensors 105 and 106 are deployed to collect measurements, such as borehole temperature, directional parameters, borehole pressure, formation properties, thickness of hydrocarbon zone, and mud environment, to name a few examples.
  • measurements such as borehole temperature, directional parameters, borehole pressure, formation properties, thickness of hydrocarbon zone, and mud environment.
  • other types of petrophysical parameters may be measured, such as effective porosity and permeability, and oil-water contact, to name just a couple of examples.
  • the number of sensors may be other than two in number.
  • some or all of the sensors may be deployed on the outside of outer-shield 102, but for ease of illustration, sensors 105 and 106 are shown inside the nano-robot adjacent to outer-shield 102.
  • a nano-robot may be used to enter a fracture.
  • additional passageways in an oil reservoir are created to facilitate the flow of oil to a producing well.
  • reservoir having oil-containing rocks with restricted pore volume an connectivity that impede the flow of oil are sometime fractured by injecting a fluid containing sand or other proppant under pressure to create fractures in the rock through which the oil may more easily flow.
  • an embodiment may include injecting nano-robots with the proppants so that they may be pumped into the fracture.
  • the nano-robots may sense and transmit data associated with the fracture; such as for example fracture conductivity, how much residue is left in the fracture, permeability, and other petrophysical parameters.
  • the nano-robots may not be retrieved, but simply left in the fracture.
  • the number of nano-robots to be injected may be determined by an algorithm, which may depend upon the fracture length and height, and the proppant volume to be pumped.
  • Transceiver 120 comprises a transmitter and receiver coupled to antenna 122 so that the nano-robot may communicate with other nano-robots, as well as other communication devices, such as a transponder (transceiver) on a drill bit assembly.
  • Antenna 122 may be a patch antenna, and may be conformal with outer-shield 102. Other embodiments may employ different antenna designs other than a patch.
  • Fig. 2 illustrates, in simplified form, a system including nano-robots, nano-robots injector, well and accompanying infrastructure according to an embodiment.
  • a well is shown with surface casing 202 and intermediate casing 204, where the arrows indicate mud flow direction.
  • mud pump 206 mud flows through stand pipe 208, mud flow line 210, swivel 212, Kelly 214, and through drill pipe 216, out of bit 218 into the well, and then upward through annulus 220 to retrieval 222.
  • Retrieval 222 retrieves the nano-robots.
  • the nano-robots are expected to flow back to the surface by assistance of the drilling mud.
  • retrieval 222 may comprise a chamber placed before the shale shaker to assist in retrieving. Some embodiments may not employ retrieval 222, for example, if nano-robots were relatively inexpensive they may be considered waste product along with other debris.
  • the mud flow then continues to shaker and mud pit 224, whereupon it is provided to mud pump 206, and the mud flow process repeats.
  • injector 226 is located after mud pump 206 with respect to the mud flow. Its function is to inject nano-robots into the mud flow. For some embodiments, it is attached at a convenient position before the goose neck on the mud flow line. Injector 226 is coupled by way of a non-returning valve, which allows one way injection of nano-robots into the mud flow (or fracturing fluid flow if hydraulic fracturing is in progress), and mitigates the return of mud flow (or fracturing fluid flow) into injector 226.
  • transponder 228 on drill collar 230 is used to receive information from nano-robots, and to relay such information to receivers at the drilling site. Transponder 228 may also receive information from surface transmitters, and relay such information to the nano-robots. For some embodiments, transponder 228 may communicate to the surface wirelessly using a lower frequency, and a higher power, than that available to nano-robots. In this way, communication from devices on the surface to the nano-robots deep within a wellbore is facilitated. For some embodiments, communication between transponder 228 and the surface may be by way of an electrical cable, or fiber optic, to name a couple of examples. For the case of hydraulic fracturing, for some embodiments a transponder may be placed on the bottom of casing 202, in the vicinity of the formation, and may be cemented in place.
  • control information may be provided to the nano-robots, such as for example the type of measurements that should be made.
  • data provided by the nano-robots may be stored in surface computers in field service vehicle 232.
  • Fig. 2 illustrates an application of nano-robots to vertical well drilling.
  • nano-robots have application to other types of well drilling, such as for example non-vertical drilling involving coiled tubing.
  • Fig. 3 illustrates an injector according to an embodiment. Operation of injector 226 is controlled by microprocessor 302. To simplify the drawing, communication paths between microprocessor 302 and the various components in injector 226 are not explicitly indicated. Bus 304 provides communication to interface device 306 to allow communication with external devices. Interface device 306 may be a wireless device, or an interconnect, for example. Robot holding cartridge 308 holds nano-robots in suspension of a suitable fluid so that they may be ready for loading. Cartridge releasing and holding 309 is a device used to facilitate the release and reloading of robot holding cartridge 308 into injector 226, and is operated by microprocessor 302.
  • Gate controller 310 under control of microprocessor 302, operates gate 312 to allow nano-robots held in robot holding cartridge 308 to enter robot acceleration device 314.
  • Robot acceleration device accelerates nano-robots to a velocity equal to (or sufficiently close to) the velocity of the mud flow. This helps prevent abrupt acceleration of the nano-robots.
  • gate controller 316 causes gate 318 to open so that the nano-robots may exit robot acceleration device 314 and enter mud flowline connector 320.
  • Gate controller 322 causes gate 324 to open so that the nano-robots may eject injector 226.
  • Fig. 3 is merely one example of an embodiment injector.
  • acceleration of the nano-robots may not be performed, for example if the nano- robots are designed to withstand a sudden acceleration from rest to the velocity of the mud flow (or fracturing fluid flow).
  • Nano-robots are injected (block 402) into the mud flow, whereupon communication and control (block 404) is provided between nano-robots themselves, and between nano-robots and surface computers.
  • This communication may include providing commands to the nano-robots, whereby some or all of the nano-robots may be commanded to invade formations, fractures, or propel themselves to the surface for retrieval.
  • data sent by nano-robots to the surface may be stored on surface computers, as discussed previously.
  • Nano-robots are retrieved (block 406) from the mud flow, whereupon they are available for re-use.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Earth Drilling (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Manipulator (AREA)

Abstract

L'invention concerne un système à nano-robots et des procédés de diagraphie des sondages et de mesures de puits de forage. Selon un mode de réalisation, un nano-robot comprend un système de propulsion pour fournir une poussée dans une boue de forage, avec des ailettes extensibles pour aider l'orientation du nano-robot dans la boue de forage. Les ailettes sont également extensibles vers une position plus éloignée lorsqu'elles sont utilisées pour l'orientation, de telle sorte que le nano-robot peut s'intégrer lui-même dans une formation pour mesurer ses propriétés, telles que la porosité et la perméabilité. Selon un mode de réalisation, un nano-robot comprend des électrodes pour générer une tension à partir des ions dans la boue de forage, et un émetteur-récepteur et une antenne pour fournir une communication avec d'autres nano-robots, et comprend un transpondeur sur un câble de forage de telle sorte que des données mesurées peuvent être émises vers des récepteurs de surface pour stockage de données et analyse. D'autres modes de réalisation sont décrits et revendiqués.
PCT/IN2007/000556 2007-10-08 2007-11-26 Système à nano-robots et procédés de diagraphie des sondages et de mesures de puits de forage WO2014068581A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1999/MUM/2007 2007-10-08
IN1999MU2007 2007-10-08

Publications (1)

Publication Number Publication Date
WO2014068581A2 true WO2014068581A2 (fr) 2014-05-08

Family

ID=40549703

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/IN2007/000556 WO2014068581A2 (fr) 2007-10-08 2007-11-26 Système à nano-robots et procédés de diagraphie des sondages et de mesures de puits de forage
PCT/IN2008/000335 WO2009047781A2 (fr) 2007-10-08 2008-05-28 Système de nano-robots et procédés pour diagraphies de sondages et mesures de puits de forage

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/IN2008/000335 WO2009047781A2 (fr) 2007-10-08 2008-05-28 Système de nano-robots et procédés pour diagraphies de sondages et mesures de puits de forage

Country Status (3)

Country Link
US (1) US20100242585A1 (fr)
GB (1) GB2466410B (fr)
WO (2) WO2014068581A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106323836A (zh) * 2016-08-11 2017-01-11 中国石油天然气股份有限公司 一种井壁渗透率计算方法及装置

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8797037B2 (en) 2008-04-11 2014-08-05 Baker Hughes Incorporated Apparatus and methods for providing information about one or more subterranean feature
US8841914B2 (en) 2008-04-11 2014-09-23 Baker Hughes Incorporated Electrolocation apparatus and methods for providing information about one or more subterranean feature
US8253417B2 (en) 2008-04-11 2012-08-28 Baker Hughes Incorporated Electrolocation apparatus and methods for mapping from a subterranean well
US9063252B2 (en) * 2009-03-13 2015-06-23 Saudi Arabian Oil Company System, method, and nanorobot to explore subterranean geophysical formations
US20110191028A1 (en) * 2010-02-04 2011-08-04 Schlumberger Technology Corporation Measurement devices with memory tags and methods thereof
AU2011217960B2 (en) * 2010-02-20 2015-04-02 Baker Hughes Incorporated Apparatus and methods for providing information about one or more subterranean variables
US9187993B2 (en) 2011-04-26 2015-11-17 Saudi Arabian Oil Company Methods of employing and using a hybrid transponder system for long-range sensing and 3D localizaton
US9062539B2 (en) 2011-04-26 2015-06-23 Saudi Arabian Oil Company Hybrid transponder system for long-range sensing and 3D localization
FR2984527B1 (fr) * 2011-12-20 2014-09-05 Univ Montpellier Ii Procede et appareil de determination d'une trajectoire d'un ecoulement aqueux, et sonde autonome mise en œuvre dans ce procede.
US9359841B2 (en) * 2012-01-23 2016-06-07 Halliburton Energy Services, Inc. Downhole robots and methods of using same
US9097097B2 (en) 2013-03-20 2015-08-04 Baker Hughes Incorporated Method of determination of fracture extent
NL2012483B1 (en) * 2014-03-20 2016-01-18 Stichting Incas3 Method and system for mapping a three-dimensional structure using motes.
US20170350241A1 (en) * 2016-05-13 2017-12-07 Ningbo Wanyou Deepwater Energy Science & Technology Co.,Ltd. Data Logger and Charger Thereof
US20170328197A1 (en) * 2016-05-13 2017-11-16 Ningbo Wanyou Deepwater Energy Science & Technolog Co.,Ltd. Data Logger, Manufacturing Method Thereof and Real-time Measurement System Thereof
US10385657B2 (en) 2016-08-30 2019-08-20 General Electric Company Electromagnetic well bore robot conveyance system
CA2989023C (fr) * 2016-12-15 2022-05-24 Ingu Solutions Inc. Dispositif capteur, systemes et methodes de determination des parametres d'un fluide
CN109519163A (zh) * 2018-12-05 2019-03-26 西南石油大学 一种控制连续油管钻井钻进速度和钻压的系统及方法
US10999946B2 (en) * 2019-05-17 2021-05-04 Saudi Arabian Oil Company Microchips for downhole data collection
US11293276B2 (en) * 2019-07-19 2022-04-05 Exxonmobil Upstream Research Company Monitoring a fracture in a hydrocarbon well
CN111396031A (zh) * 2020-03-18 2020-07-10 青海省环境地质勘查局 一种钻探流体参数监测系统及方法
US11585210B2 (en) * 2020-09-23 2023-02-21 Saudi Arabian Oil Company Advanced materials gun and logging bots for deep saturation measurement
US11859492B2 (en) 2021-11-22 2024-01-02 Saudi Arabian Oil Company Method and system for connecting formation fractures using fracbots

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993974A (en) * 1974-06-03 1976-11-23 Senturion Sciences, Inc. Seismic method for determining the position of the bit on a drill stem in a deep borehole
US6148912A (en) * 1997-03-25 2000-11-21 Dresser Industries, Inc. Subsurface measurement apparatus, system, and process for improved well drilling control and production
DE69841500D1 (de) * 1997-05-02 2010-03-25 Baker Hughes Inc Methode und Vorrichtung zur Kontrolle einer Chemikalieneinspritzung eines Oberflächenbehandlungssystems
US7014624B2 (en) * 1999-03-03 2006-03-21 The Uab Research Foundation Direct central nervous system catheter and temperature control system
US7625951B2 (en) * 2000-07-13 2009-12-01 University Of Kentucky Research Foundation Stimuli-responsive hydrogel microdomes integrated with genetically engineered proteins for high-throughput screening of pharmaceuticals
US7082822B2 (en) * 2002-04-05 2006-08-01 Vetco Gray Inc. Internal riser inspection device and methods of using same
US7107863B2 (en) * 2002-04-05 2006-09-19 Vetco Gray Inc. Internal riser inspection system, apparatus and methods of using same
US20040238907A1 (en) * 2003-06-02 2004-12-02 Pinkerton Joseph F. Nanoelectromechanical transistors and switch systems
US7035083B2 (en) * 2004-03-19 2006-04-25 Taiwan Semiconductor Manufacturing Co Ltd Interdigitated capacitor and method for fabrication thereof
US7617891B2 (en) * 2005-10-11 2009-11-17 Schlumberger Technology Corporation Mechanical crawler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106323836A (zh) * 2016-08-11 2017-01-11 中国石油天然气股份有限公司 一种井壁渗透率计算方法及装置
CN106323836B (zh) * 2016-08-11 2019-01-18 中国石油天然气股份有限公司 一种井壁渗透率计算方法及装置

Also Published As

Publication number Publication date
US20100242585A1 (en) 2010-09-30
GB201006337D0 (en) 2010-06-02
GB2466410B (en) 2012-03-14
GB2466410A (en) 2010-06-23
WO2009047781A2 (fr) 2009-04-16
WO2009047781A3 (fr) 2009-11-26

Similar Documents

Publication Publication Date Title
US20100242585A1 (en) Nano-robots system and methods for well logging and borehole measurements
US9523789B2 (en) Systems, machines, methods, and associated data processing to explore and analyze subterranean geophysical formations
RU2374440C2 (ru) Система датчиков
CN101446197B (zh) 用于标记侧壁岩芯的侧壁取芯工具和方法
CN101929335B (zh) 地层流体的集中取样
US20040160858A1 (en) Method and apparatus for determining downhole pressures during a drilling operation
US8453731B2 (en) Apparatus and method for estimating formation properties using nanoexplosive elements
EP3011126B1 (fr) Batterie hybride pour application haute température
CN111771041B (zh) 从图像日志计算裂缝密度的方法
CN105683493A (zh) 用于确定井筒中的套管柱的取向的刮塞
US10774617B2 (en) Downhole drilling system
WO2011022352A2 (fr) Correction de blocage de perméabilité relative par électro-osmose
CN103221636B (zh) 使用直流电磁场的储层导航

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07875290

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 07875290

Country of ref document: EP

Kind code of ref document: A2