EP2607617A1 - Agencement de perforation - Google Patents

Agencement de perforation Download PDF

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Publication number
EP2607617A1
EP2607617A1 EP11194935.0A EP11194935A EP2607617A1 EP 2607617 A1 EP2607617 A1 EP 2607617A1 EP 11194935 A EP11194935 A EP 11194935A EP 2607617 A1 EP2607617 A1 EP 2607617A1
Authority
EP
European Patent Office
Prior art keywords
component
sacrificial anode
lining
hole arrangement
sensor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP11194935.0A
Other languages
German (de)
English (en)
Inventor
Tom Blades
Rudolf Sollacher
Bernd Wacker
Andreas Ziroff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP11194935.0A priority Critical patent/EP2607617A1/fr
Publication of EP2607617A1 publication Critical patent/EP2607617A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells

Definitions

  • the invention relates to a conveying hole arrangement for drilling or operating a production hole or a borehole with the aim of conveying in particular crude oil and / or natural gas.
  • the invention relates in particular to the supply of electronic components within the production or borehole.
  • a drilling turbine attached to a drill string drives a drill bit or bit that is driven further and further into the ground.
  • the resulting loose rocks are transported via the borehole to the surface.
  • the drill pipe is usually metallic.
  • a liquid can be passed through the wellbore through an inner tube to the drill and also be transported upwards within the well in an annulus between the wellbore and inner tube together with the crushed rock.
  • the borehole can already be lined in various stages during the development phase by means of a casing or a housing.
  • Metallic tubes are used, which are preferably additionally cemented from the outside.
  • sensors may be installed in the vicinity of the drill head, the current values such. B. supply pressure.
  • valves are used, which may also have sensors to detect the opening state of the respective valve.
  • sensors are needed to measure changes in pressure, temperature, or electrical conductivity to optimize production, for example.
  • sensors are installed in the conveyor hole.
  • the production well corresponds to the wellbore where the drill string is removed and in which, in particular, a production tubing may be inserted within the casing.
  • pumps with associated pump rods or a gas-lift system may additionally be introduced.
  • the condition of moving parts is subject to wear, so it may be important to determine if the behavior of a pump or drive motor is changing, for example due to bearing wear. This can be evaluated in such a way that measures can be taken early on for a planned exchange. This is made possible again by sensors in the delivery hole or on the pump.
  • the energy for one of the telemetry stations is taken from the environment of the respective telemetry station.
  • the energy source is the potential energy of the fluid being pumped, kinetic energy of an injected fluid or drill string, eddy currents in conjunction with a piezoelectric material, the voltage of a sacrificial anode protecting the drill string from conductive drilling fluid, temperature differences between the inside and outside of the drill string, or induction by a conductive drilling fluid using permanent magnets in question.
  • replaceable or rechargeable batteries are mentioned as an energy supplier.
  • US 2005/0024231 A1 further discloses various variants of communication, such as acoustic transmission, radio frequency transmission, electromagnetic or optical transmission.
  • adjacent telemetry stations are in communication with each other, wherein preferably also stations can be skipped, so that the longest possible transmission links can be achieved with a small number of involved telemetry stations.
  • US 2005/0024231 A1 furthermore pressure, temperature and vibration sensors, as well as sensors for monitoring the current and voltage values of the telemetry stations.
  • the invention relates to a conveying hole arrangement for drilling or operating a production hole, which is used to convey a fluid, in particular crude oil and / or natural gas and / or a multiphase mixture, e.g. comprising oil and gas from an underground reservoir - also called a reservoir.
  • a fluid in particular crude oil and / or natural gas and / or a multiphase mixture, e.g. comprising oil and gas from an underground reservoir - also called a reservoir.
  • the inventive concept can also be used in the operation of injection tubes, for injecting a fluid in which a fluid is transported in a reverse flow direction in a substrate.
  • the wording "production hole" may be misleading and it may alternatively be spoken of feed hole or a similar term. For simplicity, this document always speaks of production hole.
  • the delivery hole arrangement comprises at least one underground electronic component - preferably a sensor and / or a communication device - and at least one sacrificial anode, which is electrically connected to a surrounding soil of the production hole, wherein a first of the at least one sacrificial anodes with a first of the components with each other is electrically - in particular galvanically connected - that a resulting voltage potential across the first sacrificial anode and the first component is used as the supply voltage for the first component.
  • a galvanic connection of the metal tube with the sacrificial anode creates a primary element. Due to the more negative electrochemical potential of the sacrificial anode compared to the metal tube, the former emits electrons to the oxygen of the electrolytic environment. As a result, ions are released from the sacrificial anode and pass into the environment - so that the sacrificial anode is decomposed very slowly due to oxidation or corrosion - while the metal tube only absorbs electrons and thus remains protected.
  • This electrical potential difference between sacrificial anode and metal tube is used in the present invention as operating or supply voltage of the first component. Thereby, the circuit of the primary element of sacrificial anode and metal tube is closed not only by the electrolytic environment, but also in parallel by the component.
  • a sacrificial anode is connected in pairs with each component. If the component is formed as a pair of interconnected sensor and communication device, then the sacrificial anode may also be connected to the sensor and the communication device so that both can be powered by the sacrificial anode.
  • the delivery hole arrangement is particularly advantageous in that it can be dispensed with external energy sources.
  • the components can be operated autonomously with regard to their energy supply. This is possible if very little power-consuming components are operated.
  • the sacrificial anode preferably penetrates directly into the soil or is at least directly in contact with the soil. It is in particular a piece of base metal.
  • the term "sacrificial anode” is usually used as long as it is conductively connected to a metallic material to be protected. This can also be done according to Invention, for example, when the sacrificial anode is conductively connected to the conveyor tube.
  • the term "sacrificial anode” is interpreted somewhat further than any entity that is slowly decomposed by ion loss. A protected body to which a sacrificial anode would traditionally be attached does not necessarily have to be present.
  • the sacrificial anode is merely a corrosive or oxidizing body.
  • the sacrificial anode can be part of a cathode protection system. It may be electrically connected to the production tubing, a riser, a tubing, a transport tube or a drill pipe or to a conveyor or pump rod.
  • a vibration generator or a device in the form of a turbine could additionally be provided which draws energy from the movement of the conveyed fluid.
  • an electrically conductive lining e.g. a casing, a casing, a so-called “Casing” - be provided to stabilize the production hole relative to the surrounding soil and the at least one sacrificial anode to be electrically connected to the liner.
  • the electrically conductive liner may include an insulating sheath and / or a cement sheath between the liner and the surrounding soil, with at least one portion providing electrical connection between the liner and the soil.
  • the electrical connection can be provided by the sacrificial anode itself.
  • the sacrificial anode penetrates into the ground.
  • one Cement casing preferably penetrates the sacrificial anode or other connector to make the cement, sacrificial anode, and lining connection.
  • the first component may be integrated in the electrically conductive lining.
  • the first component may be attached to the electrically conductive liner or disposed in a tubular interior of the liner.
  • the electrically conductive lining may be formed as a cylindrical tube. The first component can be arranged within the cylindrical tube, for example on an inner circumferential surface of the tube.
  • the first component can be arranged in a holder which has a substantially cylindrical lateral surface adapted to a cylindrical tube of the lining.
  • the holder is thus preferably a cylinder which largely consists of electrically insulating insulating material.
  • This cylinder should ideally be accurately inserted into the cylindrical tube, so that the two bodies touch.
  • a first sliding contact can be provided on the lateral surface in order to electrically connect the first sacrificial anode-which is preferably directly in physical communication with the ground-to the first component.
  • the first sacrificial anode may be formed as a sliding contact on the lateral surface in such a way to make electrical contact with the ground and the first component.
  • the sacrificial anode is directly in contact with the soil, but it is sufficient an indirect electrical connection to the ground. This may in particular be the case if the sacrificial anode has direct physical contact with the lining.
  • a transport tube for guiding the coaxial with the electrically conductive lining subsidized fluid - preferably petroleum and / or natural gas and / or any other gaseous, liquid or multiphase flow substances - be provided, wherein the holder is mechanically connected to the transport tube via an electrically insulating connection element.
  • the first component can have a transmitting and / or receiving device for transmitting data or can be embodied as such a transmitting and / or receiving device, the data being transmitted by means of acoustic waves or optical waves or radio frequency waves or electromagnetic waves.
  • the transmission can take place in a metal tube - in particular the lining.
  • a fiber optic cable or an electric cable or air or the lining or the transported fluid itself provided itself.
  • the transmission can then on a pulse width or pulse modulation or "Frequency Shift Keying" based.
  • CSMA-CA Carrier Sense Multiple Access with Collision Avoidance
  • Low Power Listening can be used.
  • the first component may preferably comprise a sensor and / or a communication device.
  • the sensor may be, for example, a sensor for detecting a temperature, a liquid velocity or flow rate, a liquid composition, a pressure or other parameters in the production well.
  • the information detected by the sensor can be transmitted via the communication device to the surface or to a next communication device in the production well. In the latter case, the information can be forwarded stepwise over short distances from communication device to communication device until the data finally reach a receiver on the surface in order to allow an evaluation there.
  • An implementation with multiple communication devices has the advantage that only short distances must be bridged, so that the power consumption of the communication device is low.
  • sensors and associated communication devices may be provided anyway at certain intervals, so that it is advantageous not to design these communication devices as mere transmitters, but also as a receiver and forwarding station.
  • a transmission chain can be formed, via which all data of all sensors can be transmitted from the underground to the surface.
  • a second electronic component and a third electronic component with their respective transmitting and / or receiving devices together with the transmitting and / or receiving device of the first component form a transmission chain, so that data from the transmitting device of the first component to the receiving device be transmitted to the second component and after receipt at the second component, the data is transmitted by the transmitting device of the second component to the receiving device of the third component.
  • This formation can take the form of a so-called "daisy chain". This has the advantage that each individual transmitting device only has to bridge a small distance for the message transmission and thus requires less energy.
  • the lining can be completely metallic or can have portions which are electrically non-conductive in sections, so that in the latter case the current flow resulting from the sacrificial anodes can be directed in a targeted manner to the component.
  • FIG. 1 a conveyor hole arrangement 1 for operating a production hole is shown.
  • the production hole penetrates into the surrounding soil 2.
  • a lining 3 - as sheathing, or Casing Casing - provided to stabilize the borehole against the soil 2.
  • FIG. 1 the lining is shown in two stages. In a near-surface portion, a first liner (labeled with reference numeral 3) having a first cylinder radius is shown; in a surface distant portion, a second liner 3 'is further shown, with a second cylinder radius which is less than the first cylinder radius.
  • the lining 3, 3 ' is surrounded by a cement sheath 4, which, in addition to the stabilization, also acts in an electrically insulating manner against the earth 2.
  • the lining 3, 3 ' is preferably a metallic tube and is designed to be electrically conductive.
  • the lining 3, 3 'is in this case preferably continuously conductive, possibly by a conductive connecting piece between the sections designated 3 and 3'.
  • a - preferably substantially cylindrical - transport tube 5 within the production hole and coaxial with the liner 3 preferably comprises a plurality of hollow tube pieces which are connected together to form a fluid conduit.
  • the transport tube 5 is provided so that via the tubular cavity of the fluid to be delivered - a liquid, a gas or a multi-phase liquid-gas-solid mixture - can be transported up to the surface of the production hole.
  • the holder 40 is preferably substantially non-metallic. Furthermore, it is advantageously cylindrical in shape, with a cylindrical recess for passing through the transport tube 5 provided in the interior, so that the holder 40 in is substantially tubular, with a short tube length and a possibly wide tube wall.
  • the holder 40 has a lateral surface 42.
  • a sensor 10 as a first component and / or a communication device 11 - also as a first component according to the invention - provided.
  • the sensor 10 arranged in the holder 40 is intended to receive and detect certain state data. Physical or chemical properties of the multiphase mixture or the environment of the sensor can be recorded - temperature, pressure, speed - and / or the material nature of the multiphase mixture.
  • state data determined continuously or at certain intervals can be transmitted from the sensor 10 to the named communication device 11, so that the communication device 11 - which comprises at least one transmitting device - transmits the state data by means of communication data of a communication protocol in the direction of the surface.
  • the transmission can take place directly up to a receiving unit arranged on the surface, which, however, has an effect in an increased energy requirement of the communication device 11.
  • the communication devices 11 preferably also include receiving devices so that the communication data are transmitted as messages only between adjacent communication devices 11, wherein a communication device 11 forwards a message received by its receiving device from a downhole communication device 11 to the next higher communication device 11 by the message is transferred to the transmitting device of the communication device 11 and is subsequently forwarded by this.
  • a message with sensor data on be transmitted in a simple manner and with low energy consumption to the surface, since only the distance between two communication devices 11 must be bridged.
  • the message or message is forwarded by the respective communication device 11.
  • the message can also be recoded and in particular be combined with other sensor data and included in a new message.
  • the delivery hole arrangement 1 is preferably designed such that a first electronic component with a first sensor 10 and a first communication device 11, a second electronic component with a second sensor 10 and a second communication device 11 and a third electronic component with a third sensor 10 and a third communication device 11 with its associated respective communication devices 11 form a transmission chain, so that any data - but in particular measurement data from the underground, but also pure protocol-compliant communication data - are transmitted from the transmitting device of the first component to the receiving device of the second component and after receipt at the second component, the data is transmitted by the transmitting device of the second component to the receiving device of the third component.
  • the sensors 10 and the communication devices 11 require only little energy and thus the energy supply can be reduced.
  • the energy supply takes place according to the invention with a sacrificial anode 20, preferably and as in Fig. 1 shown penetrates into the surrounding soil 2.
  • the sacrificial anode 20 is in this way in electrical communication with the soil 2, whereby ions from the sacrificial anode 20 can be triggered and results in a current flow. Furthermore, there is a potential difference at the sacrificial anode 20. Due to these processes, a voltage potential results at the sensor 10 and / or at the communication device 11.
  • the sacrificial anode 20 is also electrically connected via further conductive connectors to the nearest sensor 10 and / or the communication device 11.
  • the electrical connection is made via a conductive contact element 21 which is physically connected to the sacrificial anode 20 so that the lining 3 penetrates and is connected to a conductive sliding contact 41 arranged on a lateral surface of the mounting 40.
  • the sliding contact 41 further has, integrated in the holder 40, a conductive connection to the first component - ie the sensor 10 and / or the communication device 11 (see. Fig. 2 ). Due to this conductive connection, a voltage potential 30 (see Fig. 2 ) from the sacrificial anode 20 to the first component used as the supply voltage for the first component.
  • the sensor 10 and / or the communication device 11 can consequently be supplied with energy by conductive connection to the sacrificial anode 20.
  • a current storage element such as a capacitor or an accumulator may additionally be provided to store energy generated by the sacrificial anode 20, so that sufficient energy can be temporarily stored even at low decaying voltage or at low voltage supply by using the energy store, at least in time Intervals - preferably at the same time intervals - the sensor 10 and / or the communication device 11 to provide energy only for a period of time.
  • the senor 10 and / or the respective communication device 11 may be integrated in the connecting piece 40.
  • the respective sensor 10 and / or the respective communication device 11 may also be arranged in or on the lining 3 (shown in FIG Fig. 4 ).
  • Fig. 1 is indicated that the sacrificial anode 20 and the contact element 21 penetrate the lining 3. Alternatively, they may also be attached to the liner 3 from outside, such that an electrically conductive connection is made from the sacrificial anode 20, via the contact element 21, the lining 3, the sliding contact 41 and conductive connecting pieces within the holder 40 to the sensor 10 and / or until the communication device 11 is established.
  • the aspect with the sacrificial anode 20 attached from outside to the lining 3 and / or with the contact element 21 attached from the outside to the lining 3 is shown in FIG Fig. 4 indicated.
  • the contact element 21 is merely optional.
  • the sacrificial anode 20 may also be in direct contact with the liner 3 or the sliding contact 41.
  • the sacrificial anode 20 can as in Fig. 1 as a separate component to be attached directly or indirectly to the liner 3.
  • Coating the lining 3 conceivable (not shown), which acts as a sacrificial anode 20.
  • the cement sheath 4 would have to be interrupted at intervals to allow contact with the surrounding earth 2 coating in this area.
  • the second contact element 21 and the operon anode 20 allow an electrically conductive connection from an outer surface of the liner 3 or from an outer surface of the sliding contact 41 into the ground 2, wherein the second contact element 21 and the sacrificial anode 20 are dimensioned such that the surrounding the liner 3 Cement layer 4 is bridged and a secure contact with the soil 2 is produced.
  • the contact element 21 is together with the sacrificial anode 20 in FIG.1 shown in the sectional drawing wedge-shaped and may be a conical body. Any other shapes are conceivable. So is in Fig. 4 a sacrificial anode 20 without contact element 21 shown that is also conical. Furthermore, in Fig. 4 in the sectional drawing, a rectangular Operanode 20 shown, ie the sacrificial anode 20 is largely cuboid. Any other shapes are conceivable, provided that a reliable contact with the soil 2 can be made and installed as easily as possible.
  • a voltage from the sensor 10 and / or from the communication device 11, via the sliding contact 41, optionally the lining 3, optionally the contact element 21 and the sacrificial anode 20 and the soil 2 is applied, a voltage which is sufficient for the supply of the sensor 10 and / or the communication device 11 can be picked up at the sensor 10 and / or at the communication device 11.
  • the voltage applied to the sensor 10 is a first supply voltage 30 (in FIG. 1 schematically indicated as arrow) for the sensor 10
  • the voltage applied to the communication device 11 is a second supply voltage (which in Fig. 1 is not specified or implied).
  • Other components can also have a resistive effect. Resistively acting components can be used, for example, in sections of the lining 3 or in the connecting lines within the holder 40, so that all the sensors 10 and / or communication devices 11 installed in the conveyor hole arrangement 1 are supplied with precisely the respectively required operating voltage.
  • the sacrificial anode 20 may be formed as a sacrificial anode of a present for the corrosion protection of the liner 3 cathode protection system.
  • cathode protection system - also called cathodic corrosion protection system - is a conductive system to understand in which only the sacrificial anode is attacked and decomposed to protect against corrosion, so that only from the sacrificial anode ions are dissolved out. Only as a side aspect of this results in a charge transport in the electrically conductive interconnected components, and this can be used according to the invention for the power supply of sensors 10 and / or communication devices 11.
  • a sacrificial anode 20 is preferably provided to a pair of sensor 10 and communication device 11 or just one of the two. Such an arrangement as described above can then be constructed repeatedly at intervals, so that sensor data can be read out from different depths.
  • a holder 40 is shown enlarged.
  • the sensor 10 and the communication device 11 are schematically indicated as a cuboid in the interior of the holder 40.
  • the holder 40 is formed as a tube with a lateral surface 42.
  • in the lateral surface 42 inserted or superficially applied to the lateral surface is a sliding contact 41.
  • a conductive connection to the sensor 10 and to the communication device 11 is indicated by dashed lines.
  • the surrounding lining 3 is indicated by dashed lines, and the subsequent contact element 21 and the sacrificial anode 20, wherein these are again shown wedge-shaped.
  • a portion of the transport pipe 5 is shown.
  • the sacrificial anode 20, the contact element 21, which penetrates the lining 3, the sliding contact 41, connections from the sliding contact 41 to the sensor 10 and to the communication device 11 are designed to be electrically conductive.
  • a voltage applied during operation on the sensor 10 is schematically indicated by an arrow as the supply voltage 30.
  • the holder 40 preferably has not only conductive portions but also a non-conductive body for receiving the sensor 10 and / or the communication device 10 in order to avoid unwanted short circuits on the sensor 10 and / or on the communication device 10.
  • FIG. 1 and FIG. 2 were explained on the basis of a production hole for a production operation, however, an analogous embodiment is also conceivable for a drilling operation, wherein only the drill pipe within the production hole - ie the borehole - is provided.
  • Fig. 3 is the in Fig. 2 explained component arranged in a conveying hole arrangement 1, which manages without a lining 3.
  • the metal ring previously known as sliding contact 21, which surrounds the holder 40, itself formed as a sacrificial anode 20 and is itself directly connected to the surrounding soil 2 in physical communication.
  • the resulting cavities which result during drilling for the desired diameter of the holder 40, can additionally be filled with cement 4.
  • FIG. 4 relates to the production or conveying operation in an alternative embodiment without holder 40.
  • the concepts of the previous embodiments are also on FIG. 4 apply, provided that no contradiction arises. Therefore, in the following also on already in the context of FIG. 1 and 2 introduced components.
  • a lining 3 as a casing - a so-called casing and / or a conveying pipe and / or riser - with respect to the soil 2 is provided.
  • the delivery pipe or the riser pipe is intended to convey a conveyed oil and / or gas and / or multiphase mixture and / or water from a reservoir from the subsurface to the surface.
  • the lining 3 is again preferably cylindrical in shape as a tube and stabilized from the radial outside by a cement sheath 4.
  • Coaxial inside could also be a pump linkage, however this is not further in FIG. 4 shown.
  • the lining is constructed as electrically conductive tubes.
  • a first lining - labeled with reference numeral 3 - is shown with a first cylinder radius.
  • a second lining 3 ' is furthermore shown, which has a second cylinder radius, which is smaller than the first cylinder radius.
  • the lining 3, 3 ' is surrounded by a cement sheath 4.
  • the liner 3, 3 ' is preferably continuous throughout its length.
  • the first liner 3 and the second liner 3 ' are electrically connected via an electrically conductive contact 23.
  • cement stabilization 24 is provided in this area.
  • a sensor 10 and / or a communication device 11 as a first underground electrical component according to the invention.
  • the sensor 10 is again intended to record and record state data, such as temperature, pressure, speed - and / or the material nature of the pumped fluid.
  • state data determined continuously or at certain intervals can be transmitted from the sensor 10 to the named communication device 11, so that the communication device 11 - which comprises at least one transmitting device - transmits the state data by means of communication data of a communication protocol in the direction of the surface.
  • the communication from the sensor 10 to the surface takes place again from the communication device 11 to the communication device 11 in a chain. This makes it possible to use sensors 10 and communication devices 11 with low energy consumption.
  • An energy supply of a respective sensor 10 and / or a respective communication device 11 is in each case via a sacrificial anode 20, which is conductively connected to the sensor 10 and / or the communication device 11. It may thus result in a current flow via a conductive connection from the sacrificial anode 20 via the sensor 10 and / or the communication device 11. As a result of the current flow or the resulting voltage potential, a supply voltage is applied to the sensor 10 and / or to the communication device 11.
  • a variant is indicated that the sensor 10 and the communication device 11 directly into the lining 3 is integrated.
  • a variant is shown that the sensor 10 and the communication device 11 on the surface - preferably on the radially inner surface with respect to an axis of symmetry - attached to the liner 3 '.
  • sacrificial anode 20 are schematically indicated, wherein in the Fig. 4 always the cement sheath is bridged and by the operon anode 20, a conductive connection from the soil 2 to an outer surface of the lining 3, 3 'is produced.

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  • 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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
EP11194935.0A 2011-12-21 2011-12-21 Agencement de perforation Withdrawn EP2607617A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11194935.0A EP2607617A1 (fr) 2011-12-21 2011-12-21 Agencement de perforation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11194935.0A EP2607617A1 (fr) 2011-12-21 2011-12-21 Agencement de perforation

Publications (1)

Publication Number Publication Date
EP2607617A1 true EP2607617A1 (fr) 2013-06-26

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EP11194935.0A Withdrawn EP2607617A1 (fr) 2011-12-21 2011-12-21 Agencement de perforation

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2828479A4 (fr) * 2012-03-23 2016-04-20 Baker Hughes Inc Émetteur alimenté par l'environnement pour identification de position de puits de forage
US11072999B2 (en) 2016-12-30 2021-07-27 Metrol Technology Ltd. Downhole energy harvesting
US11199075B2 (en) 2016-12-30 2021-12-14 Metrol Technology Ltd. Downhole energy harvesting
US11236586B2 (en) 2016-12-30 2022-02-01 Metrol Technology Ltd. Downhole energy harvesting
US11454093B2 (en) 2016-12-30 2022-09-27 Metrol Technology Ltd. Downhole energy harvesting

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710644A (en) * 1985-10-30 1987-12-01 Corrpro Companies, Inc. Replaceable deep anode system
US4919201A (en) * 1989-03-14 1990-04-24 Uentech Corporation Corrosion inhibition apparatus for downhole electrical heating
GB2237646A (en) * 1989-10-30 1991-05-08 Pirelli Brasil Pressure transducer for submerged items of petroleum exploration and exploitation equipment
US20050024231A1 (en) 2003-06-13 2005-02-03 Baker Hughes Incorporated Apparatus and methods for self-powered communication and sensor network
US20100127566A1 (en) * 2007-04-13 2010-05-27 Cameron International Corporation Power Supply System

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710644A (en) * 1985-10-30 1987-12-01 Corrpro Companies, Inc. Replaceable deep anode system
US4919201A (en) * 1989-03-14 1990-04-24 Uentech Corporation Corrosion inhibition apparatus for downhole electrical heating
GB2237646A (en) * 1989-10-30 1991-05-08 Pirelli Brasil Pressure transducer for submerged items of petroleum exploration and exploitation equipment
US20050024231A1 (en) 2003-06-13 2005-02-03 Baker Hughes Incorporated Apparatus and methods for self-powered communication and sensor network
US20100127566A1 (en) * 2007-04-13 2010-05-27 Cameron International Corporation Power Supply System

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2828479A4 (fr) * 2012-03-23 2016-04-20 Baker Hughes Inc Émetteur alimenté par l'environnement pour identification de position de puits de forage
US11072999B2 (en) 2016-12-30 2021-07-27 Metrol Technology Ltd. Downhole energy harvesting
US11199075B2 (en) 2016-12-30 2021-12-14 Metrol Technology Ltd. Downhole energy harvesting
US11236586B2 (en) 2016-12-30 2022-02-01 Metrol Technology Ltd. Downhole energy harvesting
US11454093B2 (en) 2016-12-30 2022-09-27 Metrol Technology Ltd. Downhole energy harvesting
US11795786B2 (en) 2016-12-30 2023-10-24 Metrol Technology Ltd. Downhole energy harvesting

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