EP3418487A1 - Procédé de nettoyage d'une tige de forage contaminée par des substances nocives et système de nettoyage associé - Google Patents

Procédé de nettoyage d'une tige de forage contaminée par des substances nocives et système de nettoyage associé Download PDF

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Publication number
EP3418487A1
EP3418487A1 EP17177659.4A EP17177659A EP3418487A1 EP 3418487 A1 EP3418487 A1 EP 3418487A1 EP 17177659 A EP17177659 A EP 17177659A EP 3418487 A1 EP3418487 A1 EP 3418487A1
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EP
European Patent Office
Prior art keywords
cleaning
flushing
boring bar
drill rod
cleaning liquid
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
EP17177659.4A
Other languages
German (de)
English (en)
Other versions
EP3418487B1 (fr
Inventor
Walter IRRENHAUSER
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.)
Bauer Spezialtiefbau GmbH
Original Assignee
Bauer Spezialtiefbau GmbH
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 Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Priority to EP17177659.4A priority Critical patent/EP3418487B1/fr
Publication of EP3418487A1 publication Critical patent/EP3418487A1/fr
Application granted granted Critical
Publication of EP3418487B1 publication Critical patent/EP3418487B1/fr
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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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/006—Accessories for drilling pipes, e.g. cleaners
    • 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
    • E21B12/00—Accessories for drilling tools

Definitions

  • the invention relates to a method and a cleaning arrangement for cleaning a polluted contaminant boring bar.
  • a boring bar which comprises or is provided with a boring tool even at the lower end.
  • the boring bar is arranged to be vertically displaceable on a carrier device arranged outside the borehole and as a rule driven in rotation.
  • the removed soil material is usually removed during drilling from the wellbore. Upon completion of the drilling, the boring bar is removed from the borehole, but pollutant-contaminated soil may adhere to the boring bar.
  • a pollutant load can also result from the fact that the drill rod is immersed in a contaminated drilling or concrete suspension.
  • the boring bar Due to the length of a boring bar of 10 m and more, it is usually required to disassemble the boring bar from the carrier from the vertical working position and to spend in a horizontal cleaning position on the ground. In this horizontal position, for example, the boring bar can be freed of adhering soil material with a high-pressure cleaner. The rinsed soil material can be collected and disposed of. Finally, the cleaned drill rod can be re-mounted on the mast of the drill.
  • the invention has for its object to provide a method and a cleaning arrangement for cleaning a polluted contaminant boring bar, with which a boring bar can be cleaned very efficient.
  • a method of cleaning a contaminant-contaminated boring bar by placing the boring bar in a vertical position, attaching a flushing nozzle to a top of the boring bar, and rinsing the boring bar with a cleaning liquid supplied via the flushing port ,
  • a basic idea of the invention can be seen not to clean a boring bar in a horizontal position, but in a vertical position.
  • a flushing nozzle through which cleaning liquid can be supplied.
  • the cleaning liquid may preferably be water or a water-based fluid.
  • Surfactants or other additives may optionally be provided which assist in the detachment of soil material or are suitable for the treatment and in particular neutralization of pollutants.
  • the boring bar can thus remain in a substantially vertical operating position on the carrier device.
  • a flushing bell carried out a rinsing of the adhering pollutant, such as from the soil, the support or drilling suspension or a setting suspension to form a foundation element.
  • Rinsing the inside and / or outside of the drill rod can be done by supplying cleaning fluid through a flushing device. As a result, a sufficient decontamination can be done with little staff and time.
  • a preferred embodiment of the invention is that a cleaning hole in the ground is provided and the contaminated drill rod is retracted for rinsing the adhering pollutant in the cleaning hole.
  • the cleaning hole in the floor can serve to catch the rinsed soil material.
  • the cleaning hole is in the contaminated area, so that infiltration of cleaning liquid with pollutants in the already contaminated soil is not harmful to the environment.
  • the cleaning hole may have a depth of several meters to a depth corresponding to the length of the boring bar and beyond.
  • the cleaning hole may be a borehole lined with a support tube.
  • the cleaning hole may be filled with cleaning fluid.
  • the drill rod can be moved vertically by means of the drill along the mast and retracted into the cleaning hole. By a vertical up and down movement of the drill rod so an additional rinsing effect can be generated.
  • a settling area for receiving the rinsed soil material may be provided.
  • the cleaning liquid can seep into the soil, provided that the cleaning area is located in a contaminated area.
  • cleaning liquid preferably continuously, is discharged.
  • a development of the invention is that the discharged cleaning liquid is supplied to a disposal device and / or a reprocessing device. As a result, overall a pollutant reduction of the environment can be achieved.
  • the flushing connection is conveyed by means of a hoisting cable along the mast of a carrier device to the upper side of the boring bar.
  • the boring bar may remain in the mounted position on the mast of the drilling rig.
  • a hook device with which the flushing stub can be detachably fastened to an upper side of the drill rod can be arranged on the flushing stub.
  • a corresponding device for hooking the flushing nozzle may be attached to the top of the drill rod.
  • the flushing nozzle is designed with an outlet opening so that the cleaning liquid flows as large as possible over the boring bar, so that a good Abzzi Angel is achieved.
  • the cleaning fluid is supplied to an interior of the drill rod.
  • a difficult to clean interior can be reliably flushed from above with a tubular drill rod.
  • a boring bar is generally to be understood as a working or guide bar used in civil engineering in construction machines, wherein there is no restriction on drilling.
  • the boring bar may be a rigid guide bar which is assembled in one piece or from a plurality of bar elements.
  • a Kelly bar is provided as the boring bar, which is composed of at least two tubular Kelly bar elements.
  • a Kelly bar is a telescopic Boring bar, which has a predominantlykellystangenelement and at least one réellekellystangenelement.
  • the Kelly bar elements are at least partially telescoped. This creates a larger free or receiving space for receiving the cleaning fluid within the Kelly bar.
  • the Kellystangenmaschine can also be telescoped in total, in which case the austeleskop Arthurm Kelly bar elements are retracted in a cleaning hole.
  • a flushing device is provided with a flushing pipe
  • the flushing pipe is mounted on a top of the drill rod with a vertical drill rod and cleaning fluid can be supplied through the flushing device through the flushing nozzle, through which the drill rod flushed from above is.
  • the cleaning arrangement according to the invention is designed in particular for carrying out the method described above. It can thus be achieved according to the advantages described above.
  • a preferred cleaning arrangement is that a cleaning hole is provided in the bottom, in which the drill rod is at least partially retractable, and that the drill rod is flushable in the cleaning hole with cleaning liquid.
  • the flushing action in the cleaning hole can be further enhanced by moving the boring bar up and down in the cleaning hole filled with cleaning liquid.
  • the flushing device and / or a discharge device for discharging cleaning liquid in each case has at least one pump.
  • only one flushing device can be provided with a pump, wherein after flushing the cleaning liquid with the flushed contaminated soil material in the surrounding soil or in the cleaning hole seeped when the place of cleaning is located in a contaminated area.
  • the flushing nozzle for the cleaning arrangement according to the invention can be designed in any desired manner, preferably with a plurality of outlet openings or adjustable outlet nozzles. It is particularly advantageous according to a development of the invention that the flushing nozzle is formed arcuate with an outlet and an inlet to which a flushing hose is connected.
  • the flushing hose is preferably connected to the flushing device with the at least one pump.
  • a circulation possibly with a temporary storage, such as in a tank or basin, be provided for the cleaning liquid, with recycled cleaning liquid is used for a further rinsing, especially for a pre-rinse.
  • a final final rinse of the drill rod can then be done with a fresh cleaning fluid.
  • a connecting element for a hoist rope is attached to the flushing pipe.
  • the flush can be promoted by means of a hoisting rope, such as by means of an auxiliary winch on the mast of a drill, to the top of a drill rod on the mast.
  • the hoisting rope can also serve as a safety rope as well as for releasing the flushing nozzle after completing the flushing process.
  • FIG Fig. 1 A cleaning arrangement 10 according to the invention for cleaning a contaminated boring bar 20 on a construction machine 2 is shown schematically in FIG Fig. 1 refer to.
  • the construction machine 2 is executed in the illustrated embodiment as a drill.
  • This has a carrier device 3 with a crawler undercarriage.
  • a vertically oriented mast 4 is attached to the front side by means of a carriage movable a drill drive 7, also called power turret, is mounted vertically adjustable.
  • a drill rod 20 is used in a basically known manner and stored thereon.
  • the drill rod 20 is designed in the illustrated embodiment as a Kelly bar with three mutually telescopically arranged Kelly bar elements 27a, 27b and 27c.
  • the drill rod 20 is suspended via a main cable 5 relative to the mast 4 and the drill drive 7 movable.
  • a drilling tool is mounted on the underside of the boring bar 20, which drilling tool is dismantled in the illustrated embodiment in the cleaning of the boring bar 20.
  • the construction machine 2 is moved to an intended cleaning hole 12, in which the drill rod 20 is at least partially retracted.
  • the drill drive 7 has assumed its lower position on the mast 4.
  • the kelly bar elements 27a, 27b and 27c are telescoped out.
  • the cleaning hole 12 may be empty or already filled with a cleaning liquid.
  • a flushing device 40 having a pump for supplying a cleaning liquid is provided.
  • the flushing device 40 is formed in the illustrated embodiment box-shaped and can serve as a lift for an operator at the same time.
  • an auxiliary or hoist rope 6 can be used, which is provided on the mast 4 of the construction machine 2.
  • rinse pipe 30 is in the FIGS. 2 and 3 shown closer. This has a bent tubular body 32 with an outlet 34 and an inlet 33. At the inlet 33, a flange for attaching a supply hose for the cleaning liquid, not shown, is provided. The cleaning liquid is passed from the pump of the flushing device 40 via the supply hose to the flushing pipe 30.
  • the arcuate flushing nozzle 30 is hooked to an open top of the tubular boring bar 20, as clearly shown in FIG Fig. 3 is shown.
  • the flushing nozzle 30 has a plate-shaped support 38, with which the flushing nozzle 30 can be placed on an upper edge of the drill rod 20.
  • the flushing nozzle 30 can be attached to a holding device, not shown, on the drill rod 20 or the drill drive 7, so that it has a positional fixation in the flushing operation.
  • an eyelet-like connecting element 36 is provided on an upper side of the tubular body 32, into which hook hook of the hoist rope 6 can be hooked.
  • an outside 24 of the boring bar 20 are flushed from above.
  • a flushing of the outer side of the drill rod 20 can also take place when the drill rod 20 is pulled upwards from the lifting platform on the flushing device 40 via an operator with a hose or a corresponding high-pressure cleaner. Cleaning of the outside 24 is also readily possible after flushing the interior 22 in a horizontal position of the drill rod 20.
  • the cleaning arrangement 10 according to the invention and the cleaning method according to the invention can also be used in other construction machines 2 for civil engineering with comparable rod-shaped arrangements, such as guide rods for trench wall milling. These guide rods are partially designed only for little or no rotational movements and can have a round or angular cross-section.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP17177659.4A 2017-06-23 2017-06-23 Procédé de nettoyage d'une tige de forage contaminée par des substances nocives et système de nettoyage associé Active EP3418487B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17177659.4A EP3418487B1 (fr) 2017-06-23 2017-06-23 Procédé de nettoyage d'une tige de forage contaminée par des substances nocives et système de nettoyage associé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17177659.4A EP3418487B1 (fr) 2017-06-23 2017-06-23 Procédé de nettoyage d'une tige de forage contaminée par des substances nocives et système de nettoyage associé

Publications (2)

Publication Number Publication Date
EP3418487A1 true EP3418487A1 (fr) 2018-12-26
EP3418487B1 EP3418487B1 (fr) 2020-08-05

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Application Number Title Priority Date Filing Date
EP17177659.4A Active EP3418487B1 (fr) 2017-06-23 2017-06-23 Procédé de nettoyage d'une tige de forage contaminée par des substances nocives et système de nettoyage associé

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EP (1) EP3418487B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5927307A (en) * 1996-08-13 1999-07-27 King; Glenn Frederick Apparatus for environmentally acceptable cleaning of oil well components
WO2012026874A1 (fr) * 2010-08-26 2012-03-01 Atlas Copco Rock Drills Ab Procédé et système pour déterminer une variation de débit de fluide de nettoyage et appareil à forer la roche
GB2520301A (en) * 2013-11-15 2015-05-20 Mincon Internat Filter drill rod adapted for cleaning
US20160123116A1 (en) * 2014-10-31 2016-05-05 Spoked Solutions LLC Systems and methods for managing debris in a well

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5927307A (en) * 1996-08-13 1999-07-27 King; Glenn Frederick Apparatus for environmentally acceptable cleaning of oil well components
WO2012026874A1 (fr) * 2010-08-26 2012-03-01 Atlas Copco Rock Drills Ab Procédé et système pour déterminer une variation de débit de fluide de nettoyage et appareil à forer la roche
GB2520301A (en) * 2013-11-15 2015-05-20 Mincon Internat Filter drill rod adapted for cleaning
US20160123116A1 (en) * 2014-10-31 2016-05-05 Spoked Solutions LLC Systems and methods for managing debris in a well

Also Published As

Publication number Publication date
EP3418487B1 (fr) 2020-08-05

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