EP2652205B1 - Bohrverfahren - Google Patents

Bohrverfahren Download PDF

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Publication number
EP2652205B1
EP2652205B1 EP11771243.0A EP11771243A EP2652205B1 EP 2652205 B1 EP2652205 B1 EP 2652205B1 EP 11771243 A EP11771243 A EP 11771243A EP 2652205 B1 EP2652205 B1 EP 2652205B1
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EP
European Patent Office
Prior art keywords
drilling
slurry
jet
hardener
bearing rod
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.)
Active
Application number
EP11771243.0A
Other languages
English (en)
French (fr)
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EP2652205A1 (de
Inventor
Laurent Guignaud
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Enterprise Lyonnaise De Travaux Speciaux (elts)
Original Assignee
ENTREPRISE LYONNAISE DE TRAVAUX SPECIAUX (ELTS)
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
    • E02D5/445—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile by application of pyrotechniques
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/138—Plastering the borehole wall; Injecting into the formation
    • 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
    • E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
    • 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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes

Definitions

  • the present invention relates to a method of drilling and lining consolidation of a well in a friable ground, for casting a pile or soil recognition, or drilling water and drain, through a hollow rod train operated in rotation or linearly.
  • a drilling tool adapted to the nature of the soil.
  • a drilling fluid injected into the drill string and cuttings generated by drilling are removed by surface recovery by the same drilling fluid.
  • the method of the invention relates to any type of drilling, regardless of its diameter, depth, shape (round, square, rectangular), in any type of soil and whatever its purpose.
  • cased boreholes of using stems put end to end, as before, but also to introduce into the well, tubes according to the progress of drilling. These are the tubes that hold the ground in this case, in a safe way.
  • Another method is to use auger elements forming helicoids, solid or hollow, adding to each other depending on the progress of drilling. In this case, the excavations are dug and put back in order to then inject the cement.
  • drilling fluid used to remount the cuttings to the surface, and sometimes to hold the ground.
  • the tricone particularly suitable for any type of terrain, but the larger the diameter of the tricone, the more the drill must be important.
  • the trilame is also used, rather restricted to clay and silty soils.
  • the "downhole” or “off-hole” hammer will be preferred. This is a direct hit of the tool respectively on the bottom of the soil being drilled, or on the end of the rod carrying said drilling tool.
  • cutting button Also for the rocky terrains, are sometimes used drilling tools known as "cutting button”. This tool is made of tungsten and rotates, as in the previous cases.
  • corer which tool finds its use in soil recognition, to extract samples. It sometimes requires casing, when deep, to prevent rock fall behind the borehole.
  • the present invention aims to provide a single and simplified technique regardless of the site, where only the drilling tool is to adapt to the type of terrain.
  • the invention relates to a method of drilling and lining consolidation of a well in a friable ground, for the casting of a pile, the search for oil or soil recognition, or drilling d water and drain, by means of a hollow shaft train actuated in rotation or linearly, at the end of which is disposed a drilling tool adapted to the nature of the ground, and near which is projected a drilling fluid injected into the drill string, the cuttings thus generated by the drilling being discharged by surface raising by the same drilling fluid, characterized in that the lining of the wellbore is obtained from a double jet of projection on its wall, on the one hand a slurry of a material having curing characteristics, and secondly a fluid hardener, the first jet occurring immediately behind the drill bit, and the second jet occurring simultaneously behind said first jet.
  • the drilling may be intended for the realization of the pile for special foundations, the sounding of soil, the search for oil, water drilling or drain, without concern of holding of ground or time of intervention.
  • Another advantage of the method according to the invention lies in the fact that the realization of the well can be made horizontally, vertically or obliquely.
  • the invention also relates to the features that will emerge during the following description, which should be considered in isolation or in all their possible technical combinations.
  • the invention relates to a method of drilling and lining consolidation of a well 1,1A in a friable ground 2, for the casting of a pile, the search for oil or soil recognition, or water drilling and drain, via a train of hollow rods 3.3A actuated in rotation or linearly, at the end of which is disposed a drill bit 4 4A adapted to the nature of the soil 2, and near which is projected a drilling fluid 5 injected into the drill string 3,3A, the cuttings thus generated by the borehole being evacuated by raising to the surface by the same drilling fluid 5.
  • lining 6, 6A of the wellbore 1,1A is obtained from a double jet of projection 7,8-7A, 8A on its wall 9 9A, on the one hand a slurry of a material having curing characteristics, and on the other hand a fluid hardener, the first jet 7.7A intervening immediately behind the drill bit 4,4A, and the second jet 8.8A occurring simultaneously behind said first jet 7.7A, the assembly may be biodegradable depending on the type of drilling to be obtained, for example water drilling or drain.
  • the device is constituted by a drilling machine 10, generally designated on the figure 1 , supporting the drill string 3 at the end of which is disposed the drill bit 4 itself, which can be a tricone, a cutter, a hammer “downhole” or a trilame. In the example shown, it is a rotary drive or a hammer "off hole" 11.
  • the embodiment represented on the Figures 3 and 4 differs from the preceding in that the drive of the drilling tool 4A is linearly in the direction "F".
  • the tool 4A is in fact a grab, digging the ground 2 by means of claws 12 closing on themselves after taking the ground up, to bring it to the surface.
  • the method is the same, namely, digging the borehole 1,1A by a drill bit 4,4A and project immediately behind, one or more streams of cement slurry 7,7A, or other, and one or more hardener streams 8,8A on the walls 9,9A.
  • the drilling can be carried out dry, that is to say without mud and therefore without a specialist in this method.
  • the drilling fluid 5 is air injected under high pressure.
  • the material having curing characteristics, forming the first spray jet 7,7A is a cement slurry, or the like.
  • the cement grout consists of cement or other, and water or other, in proportions allowing the fluidity required.
  • the grout of cement or other forming the first jet 7,7A and the hardener forming the second jet 8,8A are projected under low pressure or under high pressure.
  • the piles to be subsequently poured into the wellbores being of substantially identical composition, good catch compatibility will occur with the lining which has been previously made.
  • the second jet concerning the hardener is therefore a setting accelerator having the effect of lowering, to a few seconds, the setting time of the projected grout constituting the liner, not to say almost immediately.
  • This liner will have a thickness of the order of 4 to 5 mm.
  • the grout plus the hardener may be replaced by other products according to the technical objective to be obtained for drilling.
  • the grout may be reinforced with fibers, steel or other.
  • the flow rate of the first jet 7.7A is adjusted relative to the advance of the drilling tool 4, 4A, depending on the nature of the terrain 2.
  • the hollow carrier rods 3,3A of the drill bit 4,4A comprise three feed circuits, respectively: one for the drilling fluid 5, air in this case; one for grout or other 7.7A liner; one for the 8,8A hardener.
  • the 7,7A-8,8A jets are derived from conical jet nozzles.
  • the two spray jets 7.7A-8.8A of the grout and the hardener are protected from the upwelling of the cuttings by driving the drilling fluid 5 towards the surface, via a protective screen 13, disposed on the drill pipe 3 interposed between said jets 7,8 and the drill bit 4.
  • the rotary protection screen 13 is composed of an angular sector whose angle is of such value as to protect the jets 7,8, integral with the rod 4, while allowing, in its also rotatable open zone, the passage of excavated material the surface by the drilling fluid 5, during its rotation.
  • the drilling tool 4 is equipped with a reamer, so as to increase the diameter of drilling to take into account the thickness of the liner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)

Claims (15)

  1. Verfahren zur Bohrung und Konsolidierungsverkleidung eines Schachts (1, 1A) in einem brüchigen Gelände (2) im Hinblick auf Gießen eines Pfahls, Suche nach Erdöl oder Bodenerkundung, oder zur Wasser- und Drainagebohrung mit Hilfe eines rotierend oder linear betätigten Hohlrohrgestänges (3, 3A), an dessen Ende ein für die Art des Bodens (2) angepasstes Bohrwerkzeug (4, 4A) angeordnet ist, und in dessen Nahbereich ein in das Rohrgestänge (3, 3A) eingespritztes Bohrfluid (5) verspritzt wird, wobei die durch die Bohrung so erzeugten Kleinteile von demselben Bohrfluid (5) durch Ansteigen an die Oberfläche ausgeleitet werden,
    dadurch gekennzeichnet, dass die Verkleidung (6, 6A) des Bohrschachts (1, 1A) durch einen doppelten Ausspritzstrahl (7, 8 - 7A, 8A) auf dessen Wand (9, 9A) einerseits eines Schlamms aus einem Material, das Härtungseigenschaften hat, und andererseits eines Fluidhärters erzielt wird, wobei der erste Strahl (7, 7A) unmittelbar hinter dem Bohrwerkzeug (4, 4A) zur Wirkung kommt, und der zweite Strahl (8, 8A) gleichzeitig hinter dem ersten Strahl (7, 7A) zur Wirkung kommt, wobei das Ganze je nach dem zu erzielenden Bohrungstyp biologisch abbaubar sein kann.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Bohren trocken erfolgt.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das Bohrfluid (5) Luft unter hohem Druck ist.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das über Härtungseigenschaften verfügende Material, das den ersten Ausspritzstrahl (7, 7A) bildet, ein Zementschlamm oder ein anderes Material ist.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Zementschlamm, der den ersten Strahl (7, 7A) bildet, und der Härter, der den zweiten Strahl (8, 8A) bildet, unter Hochdruck oder unter Niederdruck verspritzt werden.
  6. Verfahren nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass der Zementschlamm faserverstärkt ist.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Ausstoß des ersten Strahls (7, 7A) im Verhältnis zum Vortrieb des Bohrwerkzeugs (4, 4A) in Abhängigkeit von der Art des Geländes (2) eingestellt wird.
  8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die tragenden Hohlstangen (3, 3A) des Bohrwerkzeugs (4, 4A) drei jeweilige Versorgungskreisläufe aufweisen: einen für das Bohrfluid (5); einen für den Verkleidungs- oder sonstigen Schlamm (7, 7A); einen für den Härter (8, 8A).
  9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die zwei Ausspritzstrahlen (7, 7A - 8, 8A) des Schlamms oder sonstigen Materials und des Härters vor dem Aufsteigen von Kleinteilen, das durch Mitreißen des Bohrfluids (5) zur Oberfläche erfolgt, mittels einer Schutzabschirmung (13) geschützt werden, die an der Bohrstange (3) zwischen den Strahlen (7, 8) und dem Bohrwerkzeug (4) eingesetzt angeordnet ist.
  10. Verfahren nach ein Anspruch 9, dadurch gekennzeichnet, dass die rotierende Schutzabschirmung (13) von einem Winkelsektor gebildet ist, dessen Winkel einen derartigen Wert hat, dass die mit der Stange (4) verbundenen Strahlen (7, 8) geschützt werden, wobei gleichzeitig während ihrer Rotation in ihrer geöffneten, ebenfalls rotierenden Zone der Durchgang der vom Bohrfluid (5) an die Oberfläche angehobenen Kleinteile ermöglicht wird.
  11. Hohlstange, die an ihrem Ende mit einem Bohrwerkzeug zum Ausführen des Verfahrens ausgestattet ist, das den Gegenstand der Ansprüche 1 bis 10 bildet.
  12. Hohlstange nach Anspruch 11, dadurch gekennzeichnet, dass die Stange drei jeweilige Versorgungskreisläufe aufweist: einen für das Bohrfluid (5); einen für den Verkleidungs- oder sonstigen Schlamm (7, 7A); einen für den Härter (8, 8A).
  13. Hohlstange nach Anspruch 12, dadurch gekennzeichnet, dass die Versorgungskreisläufe für Auskleidungs- oder sonstigen Schlamm und für den Härter mit Kegelstrahlausspritzdüsen ausgestattet sind.
  14. Hohlstange nach Anspruch 13, dadurch gekennzeichnet, dass die Düsen an der Stange unmittelbar hinter dem Bohrwerkzeug angeordnet sind.
  15. Hohlstange nach Anspruch 13, dadurch gekennzeichnet, dass die Düsen am Bohrwerkzeug angeordnet sind, um die Zementschlamm- und Härterstrahlen auf die Wände zu spritzen.
EP11771243.0A 2010-12-14 2011-09-21 Bohrverfahren Active EP2652205B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1060480A FR2968702B1 (fr) 2010-12-14 2010-12-14 Procede de forage et de chemisage d'un puits
PCT/FR2011/052174 WO2012080598A1 (fr) 2010-12-14 2011-09-21 Procédé de forage et de chemisage d'un puits

Publications (2)

Publication Number Publication Date
EP2652205A1 EP2652205A1 (de) 2013-10-23
EP2652205B1 true EP2652205B1 (de) 2015-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11771243.0A Active EP2652205B1 (de) 2010-12-14 2011-09-21 Bohrverfahren

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Country Link
EP (1) EP2652205B1 (de)
ES (1) ES2542617T3 (de)
FR (1) FR2968702B1 (de)
WO (1) WO2012080598A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2503203A (en) * 2012-05-02 2013-12-25 Michael Pritchard Wellbore lining using a directional nozzle
CN105909207A (zh) * 2016-04-19 2016-08-31 安徽恒源煤电股份有限公司 突水钻孔孔内深部引流孔壁注浆固管封堵工艺
US11421507B2 (en) 2020-10-15 2022-08-23 Saudi Arabian Oil Company Reinforcing wellbores prior to casing and cementing
CN114198032B (zh) * 2021-10-29 2024-06-14 中铁六局集团呼和浩特铁路建设有限公司 一种小直径钻孔设备及使用方法
CN115217102B (zh) * 2022-08-09 2024-01-09 深圳市南华岩土工程有限公司 一种高压旋喷桩止水帷幕垂直辅助装置及工艺方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4972906A (en) * 1989-09-07 1990-11-27 Conoco Inc. Method for selective plugging of a zone in a well
CA2024664A1 (en) * 1990-09-05 1992-03-06 Stephen J. Mcdaniel Method for selective plugging of a zone in a well
WO2005078235A1 (en) * 2004-02-12 2005-08-25 Shell Internationale Research Maatschappij B.V. Suppressing fluid communication to or from a wellbore

Also Published As

Publication number Publication date
WO2012080598A1 (fr) 2012-06-21
ES2542617T3 (es) 2015-08-07
FR2968702A1 (fr) 2012-06-15
EP2652205A1 (de) 2013-10-23
FR2968702B1 (fr) 2012-12-28

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