WO2005008018A2 - Verfahren zum thermischen bohren von löchern in eis und vorrichtung zur durchführung des verfahrens - Google Patents
Verfahren zum thermischen bohren von löchern in eis und vorrichtung zur durchführung des verfahrens Download PDFInfo
- Publication number
- WO2005008018A2 WO2005008018A2 PCT/DE2004/001382 DE2004001382W WO2005008018A2 WO 2005008018 A2 WO2005008018 A2 WO 2005008018A2 DE 2004001382 W DE2004001382 W DE 2004001382W WO 2005008018 A2 WO2005008018 A2 WO 2005008018A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drilling
- water
- ice
- head
- hot water
- 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.)
- Ceased
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
- 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
Definitions
- the present invention relates to a method for the thermal drilling of holes in ice and to an apparatus for applying the method with a hot water heatable drilling head and a supply and a catching and retracting crane device.
- Ice drilling is needed for different purposes.
- a main area of application is polar research, in which the taking of ice samples in the form of drill cores from the different ice regions of the polar caps, the in-situ creation of vertical ice profiles with regard to various parameters, or the piercing of floating ice or ice shelf in the polar regions to carry out measurements and sampling below the ice are of great importance.
- the polar ice preserves information about climatic events of past times and can go back as several hundred thousand years as climate archive. With increasing depth, the layers become older and thinner due to the increasing pressure. Gentle drilling techniques are therefore required that affect the ice samples themselves as little as possible or ensure gentle handling of the measuring devices in the borehole. Ice cores are drilled from all depths for climate research purposes using mechanical hollow drills.
- a pipe provided with saw teeth at its lower end is rotated into the ice under pressure, the drilling chips being removed in the outer annular gap and a sawn-out cylindrical piece of ice remaining as the drilling core inside the pipe.
- the drill core is largely unaffected and kept free of drilling additives, so that the desired information is retained relatively undisturbed.
- thermal drilling techniques are used for creation Of ice profiles with regard to physical and chemical parameters of the ice layers such as density, content of various trace substances, pore size in the ice and colonization with cold-resistant microorganisms during the bean movement.
- An electrically heated melting probe melts through the ice and at the same time takes the desired measurements on the borehole walls or in the thin layer of melt water present at the tip of the probe.
- the rope carrying the probe is stored either for deeper holes in the probe or for holes of shallow depth with a correspondingly simpler probe on the ice surface.
- the borehole is not suctioned off and freezes over again above the probe.
- the probe delivers its measured values upwards via a signal wire and is lost after the measurements have been completed.
- Drilling through floating ice mainly serves the purpose of examining the bottom of the ice, the underlying water and the sea floor. For this purpose, drilling and measurement are carried out separately.
- the borehole is kept open during the measurement period so that the measuring instrument can be recovered after the measurements have been completed. All known techniques can be used for drilling. Mechanical drilling at high output is quick, thermal drilling requires lower output, requires less equipment, and therefore requires more time.
- the borehole must have a significantly larger diameter than for the measuring bores with a melting probe.
- the drill hole must have smooth walls, in particular for the exposure and recovery of instruments, so that it does not jam or jam when it is caught up, and thus the instrument and measurement data may be lost.
- Electrically heated and / or hot water drilling heads can be used for thermal drilling.
- fusion drilling heads in which the hot water is used for heating
- rinsing drilling heads in which the hot water is used to rinse out the ice.
- the hot water with a limited heat capacity generated directly in the drill head. The melted water is pumped up in both cases.
- the heat of exclusively electrically heated drills does not reach a greater lateral penetration depth, so that a relatively large drill diameter and thus a correspondingly high supply energy for the drill are required to produce larger drill hole diameters.
- only hole diameters in the area of the diameter of the flushing drilling head are also created, so that large drilling heads with high supply energy expenditure are also used here.
- a thermal drilling method and an associated drill head are presented, which have a ring-shaped support cutting edge and an electrical heating cartridge at the lower end of the drill head.
- This heating cartridge heats the drill head and a small water reservoir in its vicinity, so that when the drill head, which acts as a melting head, is lowered, a borehole is melted.
- the drill head Above its lower end, the drill head has a cooling element that freezes the melted borehole wall, so that a borehole with a drill diameter and a hard but more or less wavy surface is created.
- the heated and the cooled components of the drill are insulated from one another.
- the melt water is pumped up through a central pump tube.
- the catching up and lowering of the drill or of measuring devices to be used later over greater depths is extremely problematic due to canting and clamping due to the narrow borehole. This applies in particular to the retrieval of a measuring device from the water area under a through hole.
- threading into the narrow borehole is very difficult and often leads to the loss of the measuring device and thus the data.
- the drill head is complex and therefore relatively expensive.
- One on the surface located supply device must provide the electrical supply current for heating and cooling.
- a crane device for lowering and catching up the drill with the cumbersome electrical lines is also required.
- the AMANDA neutrino telescope project in the Antarctic is an application for hot water drilling with a flushing drilling head, in which the hot water is generated and stored on the surface.
- the drilling parameters are given with an average bore diameter of 60cm and a water temperature of 80 ° C.
- a photo of the drilling head shows a device with a water jet directed downwards.
- the diameter profile of the bore shows an extremely unsatisfactory fluctuation range from 45 cm to 75 cm. At .
- the method according to the invention provides the following method steps for solving:
- the method according to the invention can be implemented particularly advantageously with a device in which, starting from a generic device with a drill head that can be heated by hot water and a supply device and a hauling-up and pulling-down crane device, the drill head is provided as a combined melting, rinsing and drilling head is formed and has an axial water inlet at its upper end and a hemispherical melting area at its lower end, and above the melting area but below the water inlet has a narrow, azimuthally circumferential annular gap connected to the water inlet as water outlet, the entire melt-rinsing Drill head is made of a good heat-conducting material.
- the thermal drilling method according to the invention represents a combined melting and rinsing method with which large borehole diameters can be produced constantly down to great depths with relatively small drilling heads.
- hot water with a large heat capacity is used, which is generated on the ice surface.
- Energy depots can be used here, which easily enable large-volume water heating and can also make hot water available without delay. Larger heating devices in the drill, which would have to be very powerful to avoid time delays such as instantaneous water heaters, are eliminated.
- the melting process is carried out by pumping hot water into the melting-flushing drilling head and heating it, whereas the flushing process is implemented by the controlled, lateral exit of the hot water from the melting-flushing drilling head.
- the desired bore diameter can only be achieved up to a few meters before the lower end of the bore by melting in front of and around the flushing boring head when using a known rinsing boring head in conventional technology with only downward directed hot water jets.
- a few meters above the lower end of the borehole cold sea water with a temperature of -1.8 to -2.0 ° C is sucked in through the pilot borehole as a result of the water jets.
- the borehole in the area in front of and around the flushing drilling head is cooled to such an extent that only a bore diameter of a little more than the diameter of the flushing drilling head is achieved, which leads to the known disadvantages.
- a measurement mission can therefore not be met satisfactorily with a conventional flush drilling method.
- the hot water entering the combined melting-rinsing-drilling head is first guided past the melting area for its heating and then deflected radially and pressed out at high pressure through the azimuthal circumferential annular gap.
- the hot water jet hits the wall of the bore at high speed and can Develop the heat effect immediately.
- the hemisphere-like rounded lower end of the fusion-rinsing drilling head now lies practically on the lower end of the already melted large-volume bore and largely closes the central pilot bore with its weight.
- the melt water present at the end of the hole due to the hot melting range of the melt-rinsing drill head forms a thin film that distributes the heat energy evenly between the melt-rinsing drill head and the ice surface.
- the melt water flows into the pilot hole above the water level. Cold water is no longer drawn in by the radially discharged, disc-shaped hot water jet and the pilot hole itself, which is closed by the melt-rinsing drilling head, so that the desired hole diameter can be created over the entire length of the hole.
- the flat water jet deflected upwards on the hole wall ensures an undisturbed, evenly round hole surface free of caverns or profile grooves and a constant hole diameter.
- the drilling head designed as a combined melting and rinsing drilling head according to the invention consists only of static, mechanically stable construction elements. Rotating or otherwise moving elements and current-carrying connecting lines are avoided, which results in a very robust and insensitive construction. Due to its temperature, the hose for hot water supply leading to the drilling site instead of a power cable is not subject to the risk of freezing despite good insulation. In addition, due to its pressure rigidity, it cannot be bent or twisted.
- a disturbance when the melting-rinsing-drilling head is brought up and down in the bore is therefore not to be expected.
- Advantageous continuations of the method according to the invention provide that the water is heated to temperatures of up to 90 ° C. and that the hot water is pumped into the borehole with pressures of up to 10 7 Pa.
- Well-insulated storage of the hot water on the ice surface is not a technical problem.
- solar energy can also be used to heat the water.
- the high hot water pressures can be generated with simple pumps that are insensitive to cold, since the pressurized cross sections are relatively small.
- the pumps can be driven, for example, via existing units with internal combustion engines.
- the guide element can consist of a simple ring or tube, but it can also have a bent and flanged edge in the manner of a funnel, which avoids sharp edges.
- the narrowing of the cross section in the cylindrical funnel part can be accepted, since the bore diameter can be dimensioned sufficiently large.
- a direct melting of the ice in front of the rinsing head by vertical hot water jets is omitted in the invention. Drilling is carried out exclusively by pre-melting the melting area in the guide of the pilot hole.
- the hot water jet deflected into the radial plane of the drill head rinses the large bore diameter and the smooth wall, but is dependent on the feed due to the melting-rinsing-drilling head sinking due to melting.
- the design of the melt-flush drilling head according to the invention therefore provides that it consists of a good heat-conducting material, so that the hot water inside provides sufficient heating at the lower end of the flush head in order to melt the ice at the end of the bore with a flush head diameter.
- the fusion-rinsing drilling head is hollow in the area below the annular gap and has a plurality of radial lamellae connected to the annular gap in the cavity, which act as thermal bridges for a particularly good heat transfer from the hot water to the Provide the melting area for melting the ice in front of the melting-rinsing drilling head.
- the fusion-rinsing drilling head is constructed from a plurality of hydraulically tightly clamped radial layers. This layer structure offers advantages in the manufacture and for any necessary cleaning of the melting-rinsing-drilling head.
- the particularly stressed area of the annular gap can also be replaced separately as a result.
- a supply hose for the hot water for the axial entry of water and a rope for taking up and taking down the fusion-rinsing drilling head form a unit. This eliminates the need for a separate rope and simplifies winding and unwinding just one element.
- the supply hose for the hot water is, due to its strengthened construction due to the required pressure resistance, suitable for craneing the weight of the melting-flushing drilling head without further ado.
- Hot water 4 tempered on the ice surface is pumped into the melting-rinsing drilling head 1 and deflected into the radial plane of the melting-rinsing drilling head 1. There it emerges radially from a narrow, azimuthally circumferential annular gap 5 as a sharp, disk-like hot water jet 6 and strikes the bore wall 7 under high pressure. Since no water emerges from the melting area 3 downwards, the melting-rinsing drilling head 1 sits with it the melting area 3 on the lower bore end 8. As a result, a previously created pilot hole 9 is practically closed. Due to the hot water flowing through, the entire melt-rinsing drill head 1 is heated so far that it in particular in the melting area 3 introduces thermal energy (indicated by arrows 11 in FIG.
- the hot water 4 is fed to the fusion-rinsing drilling head 1 via a central supply hose 17.
- FIG. 2 shows in the upper part a longitudinal section through the melt-rinsing drilling head 1 according to FIG. 1 and in the lower part a cross section through the melting area 3.
- the supply hose 17 for the hot water 4 is via a central hose screw connection 21 with an inlet connection 22 as an axial one Water inlet 2 connected to the upper end of the fusion-rinsing drilling head 1.
- the hot water 4 flows through a central channel 23 into the melting area 3 of the melting-rinsing drilling head 1, flows through a structure made of heat-conducting fins 24 and penetrates under high pressure through the annular gap 5 to the outside.
- the melt-rinsing drilling head 1 shown is constructed from a plurality of radial layers 25, which are held together with a bracing 27 and are kept hydraulically tight via the sealing elements 28.
- a central radial layer 26 can serve overall to regulate the weight of the fusion-rinsing drilling head 1 according to the invention.
- FIG. 3 shows, on a shortened scale, a finished main bore 19 with a crane device 33 above it, on which a measuring device 34 with its supporting measuring line 35 hangs in the free water of the sea 31.
- the measuring device 34 is drifted by the flow 36 and no longer hangs vertically under the lower ice edge 30.
- the measuring line 35 can cut into the ice on the lower ice edge 30 of the main bore 19 and thus jeopardize the return of the measuring device 34.
- a return aid in the form of a cylindrical guide element 29 between the lower edge of the ice 30 and the sea 31, for example with a rounded edge to support threading, is provided on a support cable 32, which can also be pulled up and down by the crane device 33.
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Special Spraying Apparatus (AREA)
- Drilling And Boring (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK04738828T DK1654436T3 (da) | 2003-07-13 | 2004-06-27 | Fremgangsmåde til termisk boring af huller i is og anordning til gennemförelse af fremgangsmåden |
| CA002532314A CA2532314C (en) | 2003-07-13 | 2004-06-27 | Method of heat drilling of holes in ice and apparatus for carrying out the method |
| EP04738828A EP1654436B1 (de) | 2003-07-13 | 2004-06-27 | Verfahren zum thermischen bohren von löchern in eis und vorrichtung zur durchführung des verfahrens |
| US10/564,016 US20070127896A1 (en) | 2003-07-13 | 2004-06-27 | Method of heat drilling holes in ice and apparatus for carrying out the method |
| DE502004002206T DE502004002206D1 (de) | 2003-07-13 | 2004-06-27 | Verfahren zum thermischen bohren von löchern in eis und vorrichtung zur durchführung des verfahrens |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10332571.9 | 2003-07-13 | ||
| DE10332571A DE10332571B3 (de) | 2003-07-13 | 2003-07-13 | Verfahren zum thermischen Bohren von Löchern in Eis und Vorrichtung zur Durchführung des Verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2005008018A2 true WO2005008018A2 (de) | 2005-01-27 |
| WO2005008018A3 WO2005008018A3 (de) | 2005-03-24 |
Family
ID=33395069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2004/001382 Ceased WO2005008018A2 (de) | 2003-07-13 | 2004-06-27 | Verfahren zum thermischen bohren von löchern in eis und vorrichtung zur durchführung des verfahrens |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20070127896A1 (de) |
| EP (1) | EP1654436B1 (de) |
| AT (1) | ATE347017T1 (de) |
| CA (1) | CA2532314C (de) |
| DE (2) | DE10332571B3 (de) |
| DK (1) | DK1654436T3 (de) |
| WO (1) | WO2005008018A2 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016173389A1 (zh) * | 2015-04-29 | 2016-11-03 | 林溪石 | 冷聚变反应装置 |
| CN106837177A (zh) * | 2017-04-01 | 2017-06-13 | 吉林大学 | 用于冰层钻进的热水钻系统 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635331A (zh) * | 2012-05-20 | 2012-08-15 | 徐毅 | 一种用于地热井的机械除垢系统 |
| CN108301778A (zh) * | 2018-04-18 | 2018-07-20 | 吉林大学 | 一种用于极地冰雪钻进的新型高功率电热熔钻头 |
| DE102018003378A1 (de) | 2018-04-25 | 2019-10-31 | Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen | Schmelzkopf einer Eis-Schmelzvorrichtung |
| CN110318669B (zh) * | 2019-08-06 | 2024-02-27 | 吉林大学 | 一种用于冰架底部的仰孔热水钻进系统 |
| 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 |
| CN119354316B (zh) * | 2024-12-23 | 2025-03-11 | 吉林大学 | 一种热水钻具井下悬重测量装置 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2281434A (en) * | 1936-09-23 | 1942-04-28 | Samuel Gorad | Shaving device |
| US3338318A (en) * | 1965-10-22 | 1967-08-29 | Victor E Haglund | Ice drill |
| SU252252A1 (ru) * | 1966-01-05 | 1977-10-25 | Московский Институт Радиоэлектроники И Горной Электромеханики | Термобур |
| US3390729A (en) * | 1967-01-25 | 1968-07-02 | Army Usa | Pendulum steered thermal probe |
| FR1588454A (de) * | 1968-04-04 | 1970-04-17 | ||
| US3482640A (en) * | 1968-04-29 | 1969-12-09 | Browning Eng Corp | Blast hole drilling method |
| DE1936902B1 (de) * | 1969-07-19 | 1970-10-01 | Edwin Horbach | Verfahren und Vorrichtung zum Abteufen von Bohrungen in Eis |
| US3608317A (en) * | 1969-08-06 | 1971-09-28 | Richard E Landau | Formation and backfill of cavities in soil by jetting |
| 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 |
| US3756317A (en) * | 1972-02-09 | 1973-09-04 | G Hall | Method for cryogenically freeing drilling pipe |
| JPS557008B2 (de) * | 1972-02-29 | 1980-02-21 | ||
| CA959280A (en) * | 1973-03-02 | 1974-12-17 | David Lewes | Method of providing foundations in permafrost country |
| NL7702354A (nl) * | 1977-03-04 | 1978-09-06 | Wouter Hugo Van Eek Groot Haes | Methode en systeem voor het boren van gaten onder diepgekoelde condities. |
| US4256188A (en) * | 1978-07-17 | 1981-03-17 | Resource Development Consultants Ltd. | Method and apparatus for drilling a hole in a body of ice and for the destruction of a body of ice |
| US4640552A (en) * | 1983-09-28 | 1987-02-03 | Mobil Oil Corporation | Method and apparatus for splitting ice masses |
| US4885591A (en) * | 1983-09-28 | 1989-12-05 | Mobil Oil Corp. | Method and apparatus for monitoring ice masses |
| NO312110B1 (no) * | 2000-06-29 | 2002-03-18 | Stiftelsen Rogalandsforskning | Boreanordning |
-
2003
- 2003-07-13 DE DE10332571A patent/DE10332571B3/de not_active Expired - Fee Related
-
2004
- 2004-06-27 AT AT04738828T patent/ATE347017T1/de not_active IP Right Cessation
- 2004-06-27 WO PCT/DE2004/001382 patent/WO2005008018A2/de not_active Ceased
- 2004-06-27 DK DK04738828T patent/DK1654436T3/da active
- 2004-06-27 US US10/564,016 patent/US20070127896A1/en not_active Abandoned
- 2004-06-27 CA CA002532314A patent/CA2532314C/en not_active Expired - Fee Related
- 2004-06-27 EP EP04738828A patent/EP1654436B1/de not_active Expired - Lifetime
- 2004-06-27 DE DE502004002206T patent/DE502004002206D1/de not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016173389A1 (zh) * | 2015-04-29 | 2016-11-03 | 林溪石 | 冷聚变反应装置 |
| CN106837177A (zh) * | 2017-04-01 | 2017-06-13 | 吉林大学 | 用于冰层钻进的热水钻系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502004002206D1 (de) | 2007-01-11 |
| ATE347017T1 (de) | 2006-12-15 |
| DK1654436T3 (da) | 2007-01-29 |
| DE10332571B3 (de) | 2004-11-25 |
| EP1654436B1 (de) | 2006-11-29 |
| CA2532314C (en) | 2009-04-21 |
| CA2532314A1 (en) | 2005-01-27 |
| US20070127896A1 (en) | 2007-06-07 |
| WO2005008018A3 (de) | 2005-03-24 |
| EP1654436A2 (de) | 2006-05-10 |
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