EP3784865A1 - Tête de fusion d'un dispositif de fusion de glace - Google Patents

Tête de fusion d'un dispositif de fusion de glace

Info

Publication number
EP3784865A1
EP3784865A1 EP19720527.1A EP19720527A EP3784865A1 EP 3784865 A1 EP3784865 A1 EP 3784865A1 EP 19720527 A EP19720527 A EP 19720527A EP 3784865 A1 EP3784865 A1 EP 3784865A1
Authority
EP
European Patent Office
Prior art keywords
melting head
melting
propagation direction
inner recess
region
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.)
Granted
Application number
EP19720527.1A
Other languages
German (de)
English (en)
Other versions
EP3784865B1 (fr
EP3784865C0 (fr
Inventor
Peter Linder
Simon ZIERKE
Dirk Heinen
Christoph WIEBUSCH
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.)
Rheinisch Westlische Technische Hochschuke RWTH
Original Assignee
Rheinisch Westlische Technische Hochschuke RWTH
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 Rheinisch Westlische Technische Hochschuke RWTH filed Critical Rheinisch Westlische Technische Hochschuke RWTH
Publication of EP3784865A1 publication Critical patent/EP3784865A1/fr
Application granted granted Critical
Publication of EP3784865B1 publication Critical patent/EP3784865B1/fr
Publication of EP3784865C0 publication Critical patent/EP3784865C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • E21B7/15—Drilling by use of heat, e.g. flame drilling of electrically generated heat
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/008—Drilling ice or a formation covered by ice
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible

Definitions

  • the invention relates to a melting head of an ice melting device, comprising a rear attachment region with respect to the propagation direction for attachment to a drilling device or a drill string and a front region which can be heated with respect to the propagation direction.
  • a created connection from such a fusion head and the drilling device or a linkage can then preferably form an ice melting device.
  • the propagation direction is understood to mean the direction in which the melting head or an ice melting device formed therewith is enclosed
  • Propagation direction is preferably coincident with a center axis, in particular center longitudinal axis of the melting head and / or an ice melting device formed therewith.
  • Melting heads of this type are generally known in the art and are used to perform drilling in ice, especially in that the ice surrounding the melting head is melted by the heated front portion of the melt head and the melting head together with the associated drilling device or the drill pipe in
  • the prior art, as well as the invention further described herein, may provide for energizing heating elements within the fusion head provided by the drilling apparatus or the linkage.
  • a drilling device forms a cylindrical housing, is fastened to the front end in the propagation direction of the melting head with its rear mounting portion.
  • Melting head preferably has a maximum outer cross section, in particular diameter, which corresponds to the cross section, in particular diameter of the cylindrical drilling device.
  • Power source if necessary, also carry a further electronics, in particular, for. also an unwindable cable supply to provide communication capability and / or power transfer via the cable between the drilling device and the over-surface surface.
  • One possible application is e.g. the creation of holes in water ice, e.g. in glacial areas or even arctic areas of the earth.
  • Ice surface of distant astronomical bodies e.g., planets, moons, comets, etc.
  • the term "ice cream” is not limited to water ice.
  • any other substance is understood that is in the solid state and can be converted by means of the heat of the Schmelzbohrkopfes in another state of matter, in particular in the liquid state or even gaseous state.
  • Melting heads of melt drills have heating elements with which heat is generated, e.g. by
  • Resistance heating which is transported by thermal conduction between the heating element and the material of the melting head on the outer surface, there to cause the melting process.
  • heat transport is not only carried out from the typically several heating elements outwards to the surface of the area heated thereby
  • the melt head can come to a heat accumulation inside, which can react on the entrained electronics or energy storage. Furthermore, the heat released to the interior is effectively not or only with reduced efficiency for the heating of the fusible head available and thus possibly goes beyond the rear portions of the melt head or the
  • the front portion of the melting head has a radially outer surface area in which the front region in the propagation direction to the front axial
  • Melting head end in the outer cross-section is tapered, in particular in the outer diameter is tapered, and the radially outer surface area surrounds an inner recess, in particular in the propagation direction open inner recess whose free
  • Melting head end lies here, preferably also forms the plane of the opening of the inner recess.
  • a normal vector lies on this (opening) plane parallel to the propagation direction.
  • the heated front region has both a heated surface lying radially in the radial direction and a heated surface lying in the radial direction, namely that of the inner recess.
  • the radial direction is understood to be perpendicular to the propagation direction or center longitudinal axis of the melting head.
  • Radially inboard and outboard means, in conjunction with the so-called surfaces, that the inner surface has a smaller radial distance from the center axis than the outer surface.
  • Both the inner and the outer surface of the front area are by the respective tapers in and counter to the axial direction
  • the inner projection surface actually corresponds to the inner free one
  • the outer projection surface forms one of the inner
  • Projecting surface surrounding ring whose outer cross section, in particular outer diameter corresponds to the maximum outer cross section of the melting head and preferably the entire drilling device.
  • the heat released by the heat transport from the Fleizelementen outwardly and inwardly amount of heat can thus be much better dissipated to the environment and that according to the invention in each case over the front of the Melting head which contributes to improved Bohrfortuze and prevents internal heat accumulation.
  • the front axial melting head end forms a frame, in particular a ring, over which the radially outer surface area and the surface of the inner recess merge into one another.
  • the propagating direction end face of this ring may be e.g.
  • the front portion of the melt head forms an axially extending annular region, the ring width, ie the difference of outer to inner cross-section of the front axial end of the melting head opposite Propagation increases, especially up to the axial position of the bottom of the bottom of the inner
  • Outer surface and the surface of the inner recess is arranged, so in fact in the material of the designated ring area of the front area. Flier notebook is particularly well ensured that the heat emitted by the heating elements heat can be dissipated both over the tapered outer surface region and the inner surface of the recess by a particularly short, in particular almost radial transport to the environment and contributes to the melting.
  • the melting head may comprise a plurality of heating elements, in particular those in each case in the rear, in particular opposite
  • Propagation direction open recesses of the fusion head are used, wherein the heating elements and / or recesses each have a radial distance from the center axis of the melting head, at least in the radial distance of the frame or annular axially front end of the melting head
  • the axial length of the tapered radially outer surface area and the axial depth of the inner recess are equal. This also contributes to the homogenization of the heat transfer.
  • the surface sizes of the radially outer surface and the surface of the inner recess are equal. This ensures that at least substantially the same amount of heat can be removed by these respective surfaces per unit of time, in particular which in turn homogenizes the heat transfer to the inside and to the outside.
  • the areas projected in the propagation direction of the outer surface area and the inner recess are the same size, in particular because then by the propagation on the inner and outer surface of an at least substantially equal application of force he follows.
  • the invention may preferably provide that the outer surface area and the inner recess are n-fold around a central axis of the melting head that is in the propagation direction
  • n-fold rotational symmetry is the outer or inner cross section of the melt head (considered perpendicular to the propagation) n-polygonal, or the respective outer and inner surfaces faceted and in rotationally symmetrical design of the respective cross section is thus circular.
  • Melting head may provide that the outer surface region and the surface of the inner recess each have a cone portion or a
  • Section of a paraboloid corresponds.
  • the invention may further provide that the tapered front region corresponds to a rotation body, in particular a conical section or paraboloid section, which is rotationally symmetrical about the center axis, the tip region of which is folded over to form the recess to the interior of the fusion head on the plane in which the front axial fusion head end lies.
  • a rotation body in particular a conical section or paraboloid section, which is rotationally symmetrical about the center axis, the tip region of which is folded over to form the recess to the interior of the fusion head on the plane in which the front axial fusion head end lies.
  • the shape in particular the cross-sectional shape considered along the center axis of the outer surface area and the inner recess apart from the sign and an axial displacement, in particular an axial displacement of double axial length of the front region, the same mathematical function as a function of the radial distance from the
  • Figures 1A to 1 D show different geometries of the outer surface 1 a and inner surface 1 b of a melting head 1 according to the invention in cross-section, i. cut in a plane in which the center axis 2 of the melting head 1 is located.
  • the propagation direction 3 is visualized for all figures 1 with reference to the arrow to the left of the figures 1.
  • the front region 1 c of the melt head 1 comprises the radially outer surface area 1 a.
  • This surface area is designed to be tapered in cross-section perpendicular to the center axis 2 in the direction of the propagation. At the present here Rotational symmetry thus decreases the outer diameter of the outer
  • the beginning of the taper on the collar 1 e preferably defines the axial beginning of the front region and the melting head end 1 d the end of the front region.
  • FIGS. 1A to 1D visualize the areas of the radially outer surface area and the inner area 1b of the respective recess 5 projected in the propagation direction or direction of the center axis 2.
  • the embodiments represent the possibilities of making the sizes of the surfaces 1 a and 1 b or the sizes of the projections p1 a and p1 b the same or different sizes, in particular with the special advantages, as they are called in the general description part.
  • FIG. 1A here represents an embodiment in which the inner surface 1 b and the outer surface 1 a in the cross section shown here are each described by a parabola.
  • the two parabolas differ only in sign and an offset along the center axis 2 and are otherwise the same
  • FIGS. 2 show different embodiments of the melting head 1 according to FIG. 1A, that is to say with a respective paraboloid shape of the inner and outer surfaces 1 b and 1 a.
  • the front axial fuselage end 1d forms at the axial one
  • Flier are at least the heat-emitting tips of the Fleiz implant 6 ' , preferably centered, in the annular region 7 of the front portion of the melting head, so that their heat dissipation can be done both outwards and inwards on a short path.
  • Attachment 4 a drilling device 8 with a cylindrical housing connects to the rear, which, for example, here only symbolically represented energy sources (9) for the Fleizimplantation (6 ' ) or other electronics (9) or cable (10) can accommodate.
  • the melting head (1) thus forms an ice melting device together with this drilling device (8).
  • FIG. 4 illustrates that, in a preferred embodiment, both the outer surface 1 a and the inner surface 1 b of the recess 5 are described by the same parabolic formula P and only differ by an inversion I and an offset O along the center axis 2.

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)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne une tête de fusion (1) d'un dispositif de fusion de glace (1, 8) comprenant une zone de fixation (4), située à l'arrière par rapport à la direction de propagation et destinée à être fixée à un dispositif de forage (8) ou à un train de tiges, et une zone frontale (1c) chauffée, située à l'avant par rapport à la direction de propagation, ladite zone frontale (1c) présentant une zone superficielle (1a) située à l'extérieur dans le sens radial, dans laquelle la zone frontale (1c) se présente sous forme effilée jusqu'à l'extrémité de tête de fusion (1d) axiale en section transversale extérieure avant, effilée en particulier en termes de diamètre extérieur, et la zone superficielle (1a) située à l'extérieur dans le sens radial entourant une cavité (5) intérieure dont la section transversale libre diminue de l'extrémité de tête de fusion (1d) à l'encontre de la direction de propagation (3). L'invention concerne également un dispositif de fusion de glace (1, 8) constitué de la tête de fusion (1).
EP19720527.1A 2018-04-25 2019-04-25 Tête de fusion d'un dispositif de fusion de glace Active EP3784865B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018003378.4A DE102018003378A1 (de) 2018-04-25 2018-04-25 Schmelzkopf einer Eis-Schmelzvorrichtung
PCT/EP2019/060615 WO2019207045A1 (fr) 2018-04-25 2019-04-25 Tête de fusion d'un dispositif de fusion de glace

Publications (3)

Publication Number Publication Date
EP3784865A1 true EP3784865A1 (fr) 2021-03-03
EP3784865B1 EP3784865B1 (fr) 2023-06-07
EP3784865C0 EP3784865C0 (fr) 2023-06-07

Family

ID=66334444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19720527.1A Active EP3784865B1 (fr) 2018-04-25 2019-04-25 Tête de fusion d'un dispositif de fusion de glace

Country Status (5)

Country Link
US (1) US11629558B2 (fr)
EP (1) EP3784865B1 (fr)
CN (1) CN112135955B (fr)
DE (1) DE102018003378A1 (fr)
WO (1) WO2019207045A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215489B (zh) * 2021-12-24 2022-09-23 吉林大学 干孔式热冲击回转取心钻具

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468387A (en) * 1967-04-17 1969-09-23 New Process Ind Inc Thermal coring method and device
DE1936902B1 (de) * 1969-07-19 1970-10-01 Edwin Horbach Verfahren und Vorrichtung zum Abteufen von Bohrungen in Eis
ZA7158B (en) * 1971-01-07 1971-11-24 Co De Signaux Et D Entreprises Method of coding track circuits and permitting the transmission of information to a vehicle moving along a railway track,and receivers for putting this method into practice
US3759046A (en) * 1972-03-23 1973-09-18 Global Marine Inc Movement of marine structures in saline ice
US3991817A (en) * 1974-07-02 1976-11-16 Clay Rufus G Geothermal energy recovery
FR2388125A1 (fr) * 1977-04-22 1978-11-17 Iti Ltd Equipement de thermoforage
SU1023054A1 (ru) * 1982-02-18 1983-06-15 Белорусский Научно-Исследовательский Геологоразведочный Институт Устройство дл электротермического бурени скважин
SU1087648A1 (ru) * 1982-10-27 1984-04-23 Ордена Ленина Арктический И Антарктический Научно-Исследовательский Институт Устройство дл электротермического бурени скважин во льду
SU1149670A1 (ru) * 1983-12-28 1995-12-27 Ленинградский горный институт им.Г.В.Плеханова Устройство для электротермического бурения-плавления скважин во льду с отбором керна
FR2763992B1 (fr) * 1997-05-30 1999-08-20 Drillflex Procede et dispositif pour deboucher un puits ou une canalisation obstrue par des hydrates de gaz
DE10164648C1 (de) 2001-12-31 2003-02-06 Stiftung A Wegener Inst Polar Rechnergesteuerte Schmelzsonde zur Ermittlung unterschiedlicher Messparameter im Eisbereich
DE10332571B3 (de) * 2003-07-13 2004-11-25 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Verfahren zum thermischen Bohren von Löchern in Eis und Vorrichtung zur Durchführung des Verfahrens
CN102839918B (zh) * 2012-09-13 2014-07-16 吉林大学 冰层定向钻井热熔钻头

Also Published As

Publication number Publication date
EP3784865B1 (fr) 2023-06-07
US20210071478A1 (en) 2021-03-11
DE102018003378A1 (de) 2019-10-31
US11629558B2 (en) 2023-04-18
CN112135955A (zh) 2020-12-25
RU2020132998A (ru) 2022-04-07
WO2019207045A1 (fr) 2019-10-31
EP3784865C0 (fr) 2023-06-07
CN112135955B (zh) 2022-11-01

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