EP0214554B1 - Vorrichtung, insbesondere für den Einsatz unter Tage zur Fernübertragung von Informationen aus einem Bohrloch - Google Patents

Vorrichtung, insbesondere für den Einsatz unter Tage zur Fernübertragung von Informationen aus einem Bohrloch Download PDF

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Publication number
EP0214554B1
EP0214554B1 EP86111862A EP86111862A EP0214554B1 EP 0214554 B1 EP0214554 B1 EP 0214554B1 EP 86111862 A EP86111862 A EP 86111862A EP 86111862 A EP86111862 A EP 86111862A EP 0214554 B1 EP0214554 B1 EP 0214554B1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
inner pipe
housing
drill string
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.)
Expired
Application number
EP86111862A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0214554A2 (de
EP0214554A3 (en
Inventor
Heinz Dipl.-Ing. Wallussek
Michael Dipl.-Ing. Ostkämper
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.)
Bergwerksverband GmbH
Schwing Hydraulik Elektronik GmbH and Co
Original Assignee
Bergwerksverband GmbH
Schwing Hydraulik Elektronik GmbH and Co
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 Bergwerksverband GmbH, Schwing Hydraulik Elektronik GmbH and Co filed Critical Bergwerksverband GmbH
Priority to AT86111862T priority Critical patent/ATE48179T1/de
Publication of EP0214554A2 publication Critical patent/EP0214554A2/de
Publication of EP0214554A3 publication Critical patent/EP0214554A3/de
Application granted granted Critical
Publication of EP0214554B1 publication Critical patent/EP0214554B1/de
Expired 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
    • 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

Definitions

  • the invention relates to a target boring bar according to the preamble of claim 1.
  • Such a target boring bar is known from EP-A 0 134 467. It consists of an inner tube rotatably arranged in a fixed outer tube.
  • a target boring bar is a drill pipe installed in the drill string train, which receives and transmits measured values that come from measuring devices and monitors in the target boring bar. The measured values give the course of the bore, d. H. Information about any deviations from a predefined direction of the borehole, while the guards provide measured values which enable the functional monitoring of the various devices of such a target boring bar and which are provided with a device for correcting the drilling.
  • Such a device usually consists of a plurality of control strips pivotally mounted on the outer tube, which are supported on the joints of the borehole and can be individually adjusted via hydraulically actuatable cylinders in order to correct the direction of the drill pipe.
  • the flushing flow pressure-modulated in this way can be measured at the borehole exit, as a result of which the pressure pulses can be received by a receiver and converted into electrical quantities for transmission.
  • the energy required to actuate the measuring instruments arranged on the target boring bar, the control strips etc. is either generated by a generator which is driven by the rotating inner bar or by an electric motor.
  • the flushing liquid serves as the transmission medium for the electrical measuring pulses, which is converted into a sequence of pressure pulses by the throttle valve.
  • this principle is only made possible by the miniaturization of the transducer, which can therefore be accommodated in the restricted spatial conditions, while at the same time ensuring the required form of the pressure pulses.
  • This miniaturization of the transducer is done by moving all parts and assemblies downstream of the throttle valve into the outer tube, while the arrangement and design of the throttle valve can generate pressure pulses that are accessible for precise evaluation.
  • the throttle valve is arranged transversely to the drill pipe direction in a corresponding recess in the inner tube.
  • valve body and the recess are exposed to the abrasive flushing flow medium.
  • the transverse arrangement of the valve body requires a very small size, so that the unprotected small valve body is quickly worn out and destroyed by the abrasive forces of the flushing flow.
  • solid particles settle in the recess in which the valve is guided, as deposits, which in a relatively short time result in the valve becoming stiff and ultimately becoming stuck.
  • the invention is therefore based on the object of executing a target boring bar of the type mentioned in such a way that destruction of the valve by abrasion is counteracted and the drive elements of the valve are removed from the abrasive forces of the flushing flow.
  • the invention solves this problem with the aid of the features of the characterizing part of claim 1.
  • the invention has the advantage that, in addition to the signals supplied by the inclinometers, a large number of further data of the target boring bar can also be transmitted to the outside.
  • the required measuring devices and monitors can be accommodated in the standing and therefore relatively less mechanically stressed outer tube and only the signals they deliver after conversion into hydraulic and mechanical pulses for the throttle valve can be transferred to the flushing flow.
  • the throttle valve according to the invention is arranged in the flushing flow channel so as to be displaceable in the axial direction, so that the flushing flow flows around it in a favorable manner in a ring. It therefore offers the abrasive forces in the flushing flow fewer opportunities for attack, which results in a longer service life.
  • the flushing medium has no possibility of coming into contact with the drive and movement units of the valve. This prevents the valve assembly from becoming stuck due to deposits. Only the valve itself and the webs are exposed to the flushing liquid flow, while all sensitive devices such as measuring instruments, transducers, throttle valve drives and the energy supply are either arranged in the outer tube, which is less stressed, or in rooms sealed against the flushing liquid.
  • the valve is designed on the inflow side as a streamlined cap which can be displaced in the axial direction on the hollow body and on the outflow side as a streamlined cap which can be displaced in the axial direction in the hollow body.
  • a hydraulic or pneumatic drive can be provided, in which the valve body can be actuated through bores in the inner tube and in webs of the hollow body via a pressure medium supply arranged in the outer tube, the valve having two hermetically sealed chambers, in each of which one of the holes opens. If the upstream chamber is supplied with hydraulic or pneumatic pressure medium, the cap pushes against the valve seat and reduces the flow cross-section or completely prevents the flow. The cap sits on the outer circumference of the hollow body.
  • the valve can be actuated by levers which engage the valve and are driven by drives arranged in the outer tube.
  • the levers can be designed as fork rockers that can be inserted through the webs and are mounted on the hollow body.
  • the fork rockers actuated by the drive in turn actuate a piston which is arranged in the hollow body and displaces the caps in or against the direction of flow.
  • a hydraulically or pneumatically operable ring piston is provided as the drive for the levers and is mounted in the outer tube.
  • the lever ends on the drive side are arranged on a rotary bearing, the fixed part of which is attached to the annular piston.
  • the lever ends on the drive side can also be actuated electromechanically or electromagnetically, however, the valve can also be driven directly electromagnetically or electromechanically.
  • a target boring bar is generally provided with the reference symbol 1 in a broken representation. It consists of an outer tube 2 which is fixed in the borehole and which is provided on its outside with control bars, not shown, which are pivotally mounted thereon, which are supported on the borehole wall and can be individually adjusted via hydraulically actuatable cylinders in order to correct the direction of the drill pipe.
  • An inner tube 3 is rotatably mounted in the outer tube 2. Connected in a rotationally fixed manner to the inner tube 3, a throttle valve, generally designated 4, is arranged concentrically therein.
  • the throttle valve 4 consists of an annular base body 5, in which a hollow body 6 is concentrically attached, which is connected to the base body 5 via webs 7 and 8.
  • the webs 7 and 8 are hollow on the inside and are aligned with openings 9 and 10 in the inner tube 3.
  • the openings 9 and 10 open into chambers 11 which are guided in a ring around the inner tube 3 in the outer tube 2.
  • the base body 5 is open on both sides, one side 12 being tapered.
  • the hollow body 6 is also open on both sides.
  • the hollow body 6 has a further cap 16, which, however, is guided as a piston in the cylinder formed by the end of the hollow body and is sealed against the hollow body 6 with ring seals 17 and 18.
  • the caps 13 and 16 are connected to a rod 19. Where the rod 19 passes the web area, the ends 20 and 21 on the driven side are engaged by levers designed as rocker arms 22 and 23 on the rod 19.
  • the fork rockers 22 and 23 are rotatably mounted on the base body 5.
  • the drive-side ends 24 and 25 of the fork rockers 22 and 23 are fastened to pins 26.
  • the pins 26 are arranged on a ring 27 which is guided around the inner tube 3 and rotatably mounted on rotary bearings 28 which are fastened to an annular piston 29.
  • the annular piston 29 can only be displaced in the axial direction.
  • the annular piston 29 is e.g. pressurized with pressure medium channels 30 and 31.
  • the ring piston and the pressure medium channels are sealed against the outer tube 2.
  • the fork rockers 22 and 23 move the rod 19 in the opposite direction.
  • the rod 19, on which the caps 13 and 16 are arranged thus displaces the caps 13 and 16 either in the direction of the tapered opening 12 of the base body 5, in the extreme case the cap 13 resting on the edge of the opening 12.
  • the opening 12 opens into the flushing liquid channel 35, which leads the flushing liquid from the hole mouth, not shown, to the drill bit, also not shown.
  • the rinsing liquid flows towards the cap 13, past it, the hollow body 6 and the cap 16, to the drill bit.
  • the actuation of the annular piston 29 leads to the displacement of the caps 13 and 16 and thus to changes in the cross section of the flushing liquid cross section.
  • pressure pulses are transmitted to the flushing liquid stream, which are collected and processed by suitable instruments at the mouth of the borehole.
  • the annular space 11 is accessible via the cover 36 for installing the fork rockers and for maintenance work.
  • FIGS. 2 and 3 A further embodiment of the device according to the invention is shown in FIGS. 2 and 3, the same parts as in FIG. 1 being provided with the same reference symbols.
  • the caps 13 and 16 are actuated hydraulically or pneumatically.
  • An annular piston is therefore no longer required, as is the fork rocker.
  • channels 40 and 41 and 42 and 43 are provided in the webs, which are aligned with channels 44 to 47 in the inner tube 3.
  • the channels 40 to 47 are acted upon by a pressure medium supply, not shown, in the outer tube 2.
  • the channels 40 to 43 open into two separate chambers 48 and 49 in the hollow body 6.
  • the pressure medium flows into the chambers 48 or 49 and thus presses either the cap 13 to the opening 12 or the cap 16 to the opposite th opening of the base body 5, resulting in the above-mentioned pressure pulse generation in the liquid flow.
  • the diameter ratios of d1, d2 and d3 result in the possibility of hydrostatic pressure compensation.
  • the flow resistance body (caps 13 and 16 and hollow body 6) is hydrostatically pressure-compensated and does not experience any axial displacement due to the external pressure forces.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Earth Drilling (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Measuring Fluid Pressure (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP86111862A 1985-08-31 1986-08-27 Vorrichtung, insbesondere für den Einsatz unter Tage zur Fernübertragung von Informationen aus einem Bohrloch Expired EP0214554B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111862T ATE48179T1 (de) 1985-08-31 1986-08-27 Vorrichtung, insbesondere fuer den einsatz unter tage zur fernuebertragung von informationen aus einem bohrloch.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3531226 1985-08-31
DE19853531226 DE3531226A1 (de) 1985-08-31 1985-08-31 Vorrichtung, insbesondere fuer den einsatz unter tage zur fernuebertragung von informationen aus einem bohrloch

Publications (3)

Publication Number Publication Date
EP0214554A2 EP0214554A2 (de) 1987-03-18
EP0214554A3 EP0214554A3 (en) 1987-07-29
EP0214554B1 true EP0214554B1 (de) 1989-11-23

Family

ID=6279890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111862A Expired EP0214554B1 (de) 1985-08-31 1986-08-27 Vorrichtung, insbesondere für den Einsatz unter Tage zur Fernübertragung von Informationen aus einem Bohrloch

Country Status (10)

Country Link
US (1) US4784229A (enrdf_load_stackoverflow)
EP (1) EP0214554B1 (enrdf_load_stackoverflow)
JP (1) JPS62117984A (enrdf_load_stackoverflow)
AT (1) ATE48179T1 (enrdf_load_stackoverflow)
AU (3) AU6212286A (enrdf_load_stackoverflow)
BR (1) BR8604152A (enrdf_load_stackoverflow)
CA (1) CA1261816A (enrdf_load_stackoverflow)
DE (2) DE3531226A1 (enrdf_load_stackoverflow)
SU (1) SU1642958A3 (enrdf_load_stackoverflow)
ZA (1) ZA866610B (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531226A1 (de) * 1985-08-31 1987-03-19 Schwing Hydraulik Elektronik Vorrichtung, insbesondere fuer den einsatz unter tage zur fernuebertragung von informationen aus einem bohrloch
US5957221A (en) 1996-02-28 1999-09-28 Baker Hughes Incorporated Downhole core sampling and testing apparatus
DE19607402C1 (de) * 1996-02-28 1997-07-10 Welldone Engineering Gmbh Vorrichtung zum Übertragen von Informationen innerhalb eines Bohrrohrstranges einer Bohrvorrichtung mittels Druckimpulsen in einer strömenden Flüssigkeit, insbesondere Bohrspülflüssigkeit
CN105573248B (zh) * 2016-01-13 2018-01-30 南京航空航天大学 基于多工位装配夹具补偿的柔性件装配尺寸偏差控制方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255353A (en) * 1962-12-21 1966-06-07 Serge A Scherbatskoy Apparatus for nuclear well logging while drilling
FR2117726B1 (enrdf_load_stackoverflow) * 1970-12-10 1973-12-07 Aquitaine Petrole
US4044834A (en) * 1975-04-09 1977-08-30 Perkins Lee E Apparatus and method for controlling the flow of fluids from a well bore
DE2941102A1 (de) * 1979-10-08 1981-04-16 Dresser Industries, Inc., 75221 Dallas, Tex. In einem bohrstrang zu verwendendes arbeitsgeraet zur erfassung und uebertragung von bohrloch-messdaten
DE3000239C2 (de) * 1980-01-05 1983-10-20 Bergwerksverband Gmbh, 4300 Essen Einrichtung zur Herstellung zielgerichteter Bohrungen
DE3046122C2 (de) * 1980-12-06 1984-05-17 Bergwerksverband Gmbh, 4300 Essen Einrichtungen zur Herstellung zielgerichteter Bohrungen mit einer Zielbohrstange
DE3028813C2 (de) * 1980-07-30 1983-09-08 Christensen, Inc., 84115 Salt Lake City, Utah Verfahren und Vorrichtung zur Fernübertragung von Informationen
US4470430A (en) * 1981-05-26 1984-09-11 Lancaster Robert D Drilling choke
DE3324587A1 (de) * 1982-07-10 1984-01-19 NL Sperry-Sun, Inc., Stafford, Tex. Bohrloch-signaluebertrager fuer ein schlammimpuls-telemetriesystem
DE3233982C1 (de) * 1982-09-14 1983-10-27 Christensen, Inc., 84115 Salt Lake City, Utah In einem Bohrstrang angeordnetes hilfsgesteuertes Ventil
DE3325962A1 (de) * 1983-07-19 1985-01-31 Bergwerksverband Gmbh, 4300 Essen Zielbohrstange fuer drehendes bohrgestaenge mit spuelkanal fuer den untertagebetrieb
DE3531226A1 (de) * 1985-08-31 1987-03-19 Schwing Hydraulik Elektronik Vorrichtung, insbesondere fuer den einsatz unter tage zur fernuebertragung von informationen aus einem bohrloch

Also Published As

Publication number Publication date
BR8604152A (pt) 1987-04-28
AU651764B2 (en) 1994-07-28
US4784229A (en) 1988-11-15
CA1261816A (en) 1989-09-26
AU5912590A (en) 1990-11-01
EP0214554A2 (de) 1987-03-18
AU4123393A (en) 1993-08-19
DE3667093D1 (en) 1989-12-28
JPS62117984A (ja) 1987-05-29
SU1642958A3 (ru) 1991-04-15
DE3531226C2 (enrdf_load_stackoverflow) 1987-09-24
EP0214554A3 (en) 1987-07-29
AU6212286A (en) 1987-03-05
ATE48179T1 (de) 1989-12-15
DE3531226A1 (de) 1987-03-19
ZA866610B (en) 1987-05-27

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