WO2005066452A1 - Systeme de generateur a turbine et procede correspondant - Google Patents

Systeme de generateur a turbine et procede correspondant Download PDF

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Publication number
WO2005066452A1
WO2005066452A1 PCT/US2004/043782 US2004043782W WO2005066452A1 WO 2005066452 A1 WO2005066452 A1 WO 2005066452A1 US 2004043782 W US2004043782 W US 2004043782W WO 2005066452 A1 WO2005066452 A1 WO 2005066452A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine
fluid
downhole
generator
causing
Prior art date
Application number
PCT/US2004/043782
Other languages
English (en)
Inventor
William C. Maurer
William J. Mcdonald
Original Assignee
Noble Drilling 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 Noble Drilling Services, Inc. filed Critical Noble Drilling Services, Inc.
Priority to CA2552227A priority Critical patent/CA2552227C/fr
Publication of WO2005066452A1 publication Critical patent/WO2005066452A1/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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0085—Adaptations of electric power generating means for use in boreholes

Definitions

  • This invention relates generally to the field of power generation and, more particularly, to a downhole turbine generator system and method.
  • Downhole wellbore drilling tools include instrumentation, such as "measurement while drilling” (M D) instruments, which use flow of drilling mud to operate an electrical generator and/or hydraulic pump.
  • M D measurement while drilling
  • the electrical generator and/or hydraulic pump provides power to operate various devices within such instruments, for example, to power electronic circuitry and/or to operate various steering devices that are hydraulically actuated. It is known in the art to use a turbine to convert drilling mud flow into rotational energy to drive the electrical generator and/or hydraulic pump.
  • a turbine includes a plurality of circumferentially spaced apart “blades” having physical characteristics selected to provide a particular rotational speed and torque (the product of which is the power) output to drive a electrical generator and/or hydraulic pump for a selected flow rate of drilling mud therethrough.
  • turbine blades deliver maximum power output when operated at about half of their "runaway" speed (rotational speed of the turbine with substantially zero load) .
  • a graph of the power output with respect to turbine rotation rate of a typical fluid driven turbine has a characteristic trajectory. The trajectory begins at zero power output at zero speed, rises to a power peak at a determinable rotation speed, and again returns to zero power output at the runaway speed.
  • turbine-driven power generating systems used in downhole equipment must use a wide variety of blade characteristics (e.g., blade angle, blade flow area, blade pitch and curvature, etc.) to allow use of the turbine generator system in a number of different expected drilling mud flow rates.
  • blade characteristics in the turbine must be selected to match the expected mud flow rates.
  • drillers change the mud flow rate by more than about 25%, it is usually necessary to change the turbine blade configuration to match, otherwise the turbine may not deliver adequate power to the electrical and/or hydraulic generator.
  • Changing the blade configuration can include, for example, adding additional "stages" (combination of turbine and stator sections) or changing the physical characteristics of the turbine in one or more such sections.
  • a wellbore power generation method includes causing a fluid to flow through a downhole turbine, and causing the turbine to rotate a generator. At least one of a turbine configuration and a flow rate of the fluid is selected to cause the downhole turbine to operate near its runaway speed, such that changes in load applied to the generator do not substantially affect a rotation rate of the downhole turbine .
  • Embodiments of the invention may provide a number of technical advantages. In one embodiment, operating a downhole turbine at or near its runaway speed causes an electric generator for a downhole drilling tool to be very stable and operate at relatively constant speed, which makes the electric generator easier to use.
  • FIGURE 1 is a cross-sectional elevation view illustrating a turbine generator used in drilling a wellbore in accordance with one embodiment of the present invention
  • FIGURE 2 is a graph illustrating the operating range of prior art turbines
  • FIGURE 3 is a graph illustrating an operating range of a turbine in accordance with one embodiment of the present invention.
  • the drilling tool may be a measurement while drilling (“MWD”) tool, logging while drilling
  • MWD measurement while drilling
  • Turbine generator 100 may be used to provide electrical and/or hydraulic power to any suitable system, equipment, instrument, or device, such as simple electronic sensors, data acquisition and control (“DAC”) systems, downhole hydraulic power generation systems, systems that switch hydraulic valves downhole, resistivity and nuclear magnetic residence (“NMR”) logging tools, Electromagnetic (“EM”) -type LWD tools, or other suitable MWD tools.
  • DAC data acquisition and control
  • NMR nuclear magnetic residence
  • EM Electromagnetic
  • turbine generator 100 could be used to "trickle charge” batteries used for powering monitoring stations on pipelines or for powering cathodic protection devices in extremely harsh environments.
  • the present invention contemplates turbine generator 100 delivering any suitable amount of power to any suitable system, equipment, instrument, or device.
  • turbine generator 100 includes a turbine 111 comprised of a turbine shaft 104 and a rotor blade assembly 106, and a stator blade assembly 105 that are each disposed within a housing 103.
  • turbine generator 100 includes a turbine 111 comprised of a turbine shaft 104 and a rotor blade assembly 106, and a stator blade assembly 105 that are each disposed within a housing 103.
  • Each of these components may have any suitable size and shape and may be formed from any suitable material known in the art for use in wellbore turbine power generation systems.
  • Both stator blade assembly 105 and rotor blade assembly 106 may have any suitable blade design known in the art .
  • Turbine 111 is driven by a fluid 110 flowing through housing 103. Fluid 110 is circulated through housing 103 by a pump 108, which may be any suitable device operable to circulate fluid through housing 103.
  • Fluid 110 may be any suitable fluid depending on the application.
  • fluid 110 is a suitable drilling fluid, such as drilling mud.
  • fluid 110 may be a production fluid or other suitable fluid.
  • turbine blades operate most efficiently and deliver maximum power output when operated at approximately half of their runaway speed for any selected flow rate. Consequently, turbine generating systems known in the art typically have turbine blade characteristics selected to provide peak power output at the expected flow rate of drilling mud through the turbine. At the peak power output value (about half runaway speed) , however, small changes in power output of the turbine correspond to relatively large changes in the rotation speed of the turbine.
  • FIGURE 2 shows a graph 200 of power output with respect to rotation speed of typical turbine power generation systems.
  • an operating range 202 (the shaded area under the curve) illustrates the operating range of prior art downhole turbines.
  • operating range 202 is at or very near 50% of the runaway speed for the downhole turbine.
  • turbine 111 is caused to operate at or near its runaway speed by adjusting the flow of fluid 110 through housing 103.
  • FIGURE 3 shows a graph 300 of power versus speed of turbine 111 according to one embodiment of the invention.
  • Operating the turbine at or near its runaway speed can be attained by selecting a turbine blade configuration for which the peak power output (at one half runaway speed) is much greater than the maximum expected load on the turbine .
  • an operating range 302 shows that turbine 111 is operated at a minimum of about 75% of its runaway speed.
  • downhole turbine 111 operates at a minimum of about 85% of its runaway speed. In a more particular embodiment of the invention, turbine 111 operates substantially at its runaway speed. Operating , turbine 111 at or near its runaway speed prevents changes in power output from significantly varying the speed of turbine 111, which makes turbine 111 less vulnerable to short-duration "spike" loads that may occur during a drilling operation, such as activating solenoid valves or pulsing the, stepper motor in a mud pulse LWD system. In addition, in some embodiments, turbine 111 may deliver much more power than is needed by the downhole equipment so turbine 111 may always deliver adequate power regardless of the flow rate of fluid 110 or the power requirement of the equipment .
  • a wellbore drilling method may include drilling wellbore 102 with a drilling tool having turbine 111 that is driven by drilling fluid 110 flowing at a first flow rate. Turbine 111 is caused to operate at its runaway speed during the drilling process.
  • the flow rate of fluid 110 may be changed to a second flow rate without removing the drilling tool from wellbore 102.
  • the second flow rate is different from the first flow rate by at least twenty-five percent.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Control Of Water Turbines (AREA)

Abstract

Dans un mode de réalisation, un procédé de génération de puissance dans un puits de forage consiste à amener un fluide à s'écouler à travers une turbine de fond de puits (111), et à faire tourner un générateur (100) par la turbine. On sélectionne une configuration de la turbine et/ou un débit du fluide de façon à faire fonctionner la turbine de fond de puits à une vitesse proche de sa vitesse sous une charge sensiblement nulle, de sorte que des variations de la charge appliquée au générateur (100) n'affectent pas sensiblement une vitesse de rotation de la turbine de fond de puits (111).
PCT/US2004/043782 2003-12-29 2004-12-28 Systeme de generateur a turbine et procede correspondant WO2005066452A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2552227A CA2552227C (fr) 2003-12-29 2004-12-28 Systeme de generateur a turbine et procede correspondant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53293103P 2003-12-29 2003-12-29
US60/532,931 2003-12-29

Publications (1)

Publication Number Publication Date
WO2005066452A1 true WO2005066452A1 (fr) 2005-07-21

Family

ID=34748834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/043782 WO2005066452A1 (fr) 2003-12-29 2004-12-28 Systeme de generateur a turbine et procede correspondant

Country Status (3)

Country Link
US (1) US20050139393A1 (fr)
CA (1) CA2552227C (fr)
WO (1) WO2005066452A1 (fr)

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US8033328B2 (en) * 2004-11-05 2011-10-11 Schlumberger Technology Corporation Downhole electric power generator
US7571780B2 (en) 2006-03-24 2009-08-11 Hall David R Jack element for a drill bit
US8408336B2 (en) 2005-11-21 2013-04-02 Schlumberger Technology Corporation Flow guide actuation
US8522897B2 (en) 2005-11-21 2013-09-03 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US8297375B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Downhole turbine
US9187959B2 (en) 2006-03-02 2015-11-17 Baker Hughes Incorporated Automated steerable hole enlargement drilling device and methods
US8875810B2 (en) * 2006-03-02 2014-11-04 Baker Hughes Incorporated Hole enlargement drilling device and methods for using same
US20080053663A1 (en) * 2006-08-24 2008-03-06 Western Well Tool, Inc. Downhole tool with turbine-powered motor
EP2293253A1 (fr) * 2009-08-14 2011-03-09 Services Pétroliers Schlumberger Procédé d'affichage d'opération de forage de puits
NO333244B1 (no) * 2009-12-11 2013-04-15 Tool Tech As Roterende trykkreduksjonsturbin med tannhjul for bronnstrom med hydraulisk kraftoverforing for drift av stromgenerator
US8581427B2 (en) 2011-06-14 2013-11-12 Baker Hughes Incorporated Retractable power turbine and method thereof
US20130062881A1 (en) * 2011-09-14 2013-03-14 Chevron U.S.A. Inc. System, apparatus and method for generating power in a fluid conduit
US9759014B2 (en) 2013-05-13 2017-09-12 Baker Hughes Incorporated Earth-boring tools including movable formation-engaging structures and related methods
US9399892B2 (en) 2013-05-13 2016-07-26 Baker Hughes Incorporated Earth-boring tools including movable cutting elements and related methods
WO2016108822A1 (fr) 2014-12-29 2016-07-07 Halliburton Energy Services, Inc. Commande de face de coupe avec modulation de largeur d'impulsions
US10472934B2 (en) 2015-05-21 2019-11-12 Novatek Ip, Llc Downhole transducer assembly
US10113399B2 (en) 2015-05-21 2018-10-30 Novatek Ip, Llc Downhole turbine assembly
DE202015105448U1 (de) * 2015-10-14 2017-01-17 Bruker Biospin Gmbh Turbinenkappe, zugehöriger NMR-MAS-Rotor und zugehöriger NMR-MAS-Stator, insbesondere mit einem 0,7 mm Rotor-Röhrchen
US10907412B2 (en) 2016-03-31 2021-02-02 Schlumberger Technology Corporation Equipment string communication and steering
US10927647B2 (en) 2016-11-15 2021-02-23 Schlumberger Technology Corporation Systems and methods for directing fluid flow
US10439474B2 (en) * 2016-11-16 2019-10-08 Schlumberger Technology Corporation Turbines and methods of generating electricity
US10273801B2 (en) 2017-05-23 2019-04-30 General Electric Company Methods and systems for downhole sensing and communications in gas lift wells
BR112021026295A8 (pt) 2019-06-25 2023-02-28 Schlumberger Technology Bv Geração de energia para completações sem fio de múltiplos estágios
US12037876B2 (en) * 2022-10-05 2024-07-16 Halliburton Energy Services, Inc. Downhole power management system with rechargeable batteries and generators

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Also Published As

Publication number Publication date
US20050139393A1 (en) 2005-06-30
CA2552227C (fr) 2014-05-06
CA2552227A1 (fr) 2005-07-21

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