EP3119977A2 - Verfahren zum abteufen eines bohrlochs - Google Patents
Verfahren zum abteufen eines bohrlochsInfo
- Publication number
- EP3119977A2 EP3119977A2 EP15727563.7A EP15727563A EP3119977A2 EP 3119977 A2 EP3119977 A2 EP 3119977A2 EP 15727563 A EP15727563 A EP 15727563A EP 3119977 A2 EP3119977 A2 EP 3119977A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- borehole
- gaseous medium
- plasma generator
- rock
- feed
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000011435 rock Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 230000008020 evaporation Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 230000000630 rising effect Effects 0.000 claims abstract description 3
- 239000003380 propellant Substances 0.000 claims description 12
- 230000001174 ascending effect Effects 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract description 5
- 230000005641 tunneling Effects 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002826 coolant Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
-
- 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
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
Definitions
- the invention relates to a method for sinking a borehole in the mountains, in which the pending at the bottom hole rock is thermally melted and discharged with the aid of a gaseous medium upwards out of the wellbore, wherein the heat required to melt the rock of at least one electric plasma generator is provided, which is assigned to a propellant head, which is located at the front of an insertable into the wellbore feed and supply linkage, wherein
- the propellant head has a front heat shield, which covers the bottom hole except for a gap located on the periphery and forms a back pressure chamber with the bottom hole,
- Such a method is known from WO 2013/135391 A2.
- nitrogen is preferably used as the gaseous conveying medium, which is compressed by means of a compressor system and introduced into the borehole via the feed and supply linkage.
- a part of the gaseous conveying medium is branched off in the region of the driving head and used to generate the plasma required at the borehole column.
- the cooling of the plasma generator and the heat shield is carried out by extra water introduced and / or other coolant.
- the invention proposes starting from the method of the aforementioned type that the gaseous medium is completely or at least partially performed in liquid form over the feed or supply linkage to the propellant head and there is divided into two streams, of which one is used for cooling and operation of the plasma generator and the other is used after evaporation as ascending pumping medium, the amounts of liquid in Both partial flows are controlled so that the temperature of both the propellant head and its components as well as the feed and supply linkage are kept in a predefined temperature window.
- the adjusting temperatures can be kept in a predefined temperature window by a simple quantity control of the liquid gas partial streams introduced into the borehole.
- the medium used is primarily nitrogen in question. However, other sufficiently inert gaseous media are also suitable.
- a mounted on the surface of the day Abteufgestell is designated by the reference numeral 1, which is arranged above a borehole 2 to beprooftufenden.
- This Abteufgestell 1 is provided with the usual means for introducing a feed and supply linkage 3, which serves for advancing and supplying a arranged in the borehole 2 driving head 4.
- the propellant head 4 is provided on its side facing the bottom hole with a heat shield 5, which the bottom hole except for one on the periphery extending gap 6 covers and forms a back pressure chamber 7 with the bottom hole.
- a plurality of electric plasma generator 8 are arranged in the form of plasma torches, the heat of which brings the pending at the bottom hole rock for melting or evaporation.
- the melted at the bottom of the hole and / or evaporated rock is discharged through the ruling in the dynamic pressure chamber 7 pressure on the located at the periphery of the heat shield 5 gap 6 from the dynamic pressure chamber 7 and registered in the direction indicated by arrows 9 gaseous flow.
- the gaseous medium is essentially nitrogen, which - at least for the most part - is first provided in liquid form from a liquefied gas tank 10 and fed to the propellant head 4 via an insulated liquid gas line 1 1.
- This liquid gas - in the embodiment - liquid nitrogen is divided in the propellant head 4 via control valves 12 into two precisely controllable partial flows.
- the first partial flow is supplied to the heat shield 5 and the plasma generators 8 to be used there for cooling and for the generation of the plasma.
- the second part stream is used after its evaporation as an ascending flow, which rises in the annular space between the mountains and the feed and supply linkage and entrains the melted and / or vaporized rock.
- a downstream separation device 13 the conveying gas stream is separated from the discharged rock dust.
- a pressure vessel 14 is provided, via which additionally gaseous conveying medium can be supplied to the driving head via the feed and supply linkage.
- additional supply with a gaseous medium is not provided, so that the feed and supply linkage can be made correspondingly thinner, resulting in a smaller hole diameter and thus to a leads to a significant cost reduction, which more than compensates for the costs of producing the liquid medium.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Plasma Technology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014004040.2A DE102014004040A1 (de) | 2014-03-21 | 2014-03-21 | Verfahren zum Abteufen eines Bohrlochs |
PCT/EP2015/056092 WO2015140344A2 (de) | 2014-03-21 | 2015-03-23 | Verfahren zum abteufen eines bohrlochs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3119977A2 true EP3119977A2 (de) | 2017-01-25 |
Family
ID=53365970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15727563.7A Withdrawn EP3119977A2 (de) | 2014-03-21 | 2015-03-23 | Verfahren zum abteufen eines bohrlochs |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3119977A2 (de) |
CN (1) | CN106460458A (de) |
DE (1) | DE102014004040A1 (de) |
WO (1) | WO2015140344A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016116716A1 (de) | 2016-09-07 | 2018-03-08 | Josef Grotendorst | Verfahren zum Abteufen eines Bohrloches |
CN106761408A (zh) * | 2017-01-19 | 2017-05-31 | 中国矿业大学(北京) | 一种高能气体射流岩石钻进方法和装置 |
CN114278218B (zh) * | 2021-12-15 | 2022-08-09 | 吉林大学 | 一种基于液态金属的极地粒雪层垂钻热融钻头 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3467206A (en) * | 1967-07-07 | 1969-09-16 | Gulf Research Development Co | Plasma drilling |
CN2188647Y (zh) * | 1994-03-06 | 1995-02-01 | 黄尔玉 | 等离子火焰钻机 |
DE19625114A1 (de) * | 1996-06-14 | 1997-12-18 | Ver Energiewerke Ag | Verfahren zur Verbesserung des Wärmeaustausches in einer Geothermiebohrung |
NO322323B2 (no) * | 2003-12-01 | 2016-09-13 | Unodrill As | Fremgangsmåte og anordning for grunnboring |
CN102477845B (zh) * | 2010-11-30 | 2014-02-19 | 中国石油大学(北京) | 一种用于超短半径水平井的钻井方法 |
WO2012142738A1 (en) * | 2011-04-18 | 2012-10-26 | Empire Technology Development Llc | Improved drilling technology |
EP2825715B1 (de) | 2012-03-15 | 2016-07-27 | Josef Grotendorst | Verfahren und vorrichtung zum einbringen oder abteufen von hohlräumen im gebirge |
CN103410443B (zh) * | 2013-08-13 | 2016-03-16 | 中石化石油工程机械有限公司 | 一种热能和机械能结合的钻井方法及装置 |
-
2014
- 2014-03-21 DE DE102014004040.2A patent/DE102014004040A1/de active Pending
-
2015
- 2015-03-23 EP EP15727563.7A patent/EP3119977A2/de not_active Withdrawn
- 2015-03-23 CN CN201580015516.6A patent/CN106460458A/zh active Pending
- 2015-03-23 WO PCT/EP2015/056092 patent/WO2015140344A2/de active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015140344A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015140344A3 (de) | 2015-12-17 |
CN106460458A (zh) | 2017-02-22 |
WO2015140344A2 (de) | 2015-09-24 |
DE102014004040A1 (de) | 2015-09-24 |
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Legal Events
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AX | Request for extension of the european patent |
Extension state: BA ME |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: B23K 103/00 20060101AFI20170411BHEP |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
INTG | Intention to grant announced |
Effective date: 20170530 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20171010 |