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DE1191772B - Drill rods for carrying out earth boreholes using the flushing method - Google Patents

Drill rods for carrying out earth boreholes using the flushing method

Info

Publication number
DE1191772B
DE1191772B DEE25846A DEE0025846A DE1191772B DE 1191772 B DE1191772 B DE 1191772B DE E25846 A DEE25846 A DE E25846A DE E0025846 A DEE0025846 A DE E0025846A DE 1191772 B DE1191772 B DE 1191772B
Authority
DE
Germany
Prior art keywords
carrying
drill rods
out earth
flushing method
earth boreholes
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.)
Pending
Application number
DEE25846A
Other languages
German (de)
Inventor
Dipl-Ing Willibald Kamm
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.)
Eisenwerk Weserhuette AG
Original Assignee
Eisenwerk Weserhuette AG
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 Eisenwerk Weserhuette AG filed Critical Eisenwerk Weserhuette AG
Priority to DEE25846A priority Critical patent/DE1191772B/en
Publication of DE1191772B publication Critical patent/DE1191772B/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings

Landscapes

  • 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)

Description

Bohrgestänge zur Durchführung von Erdbohrungen nach dem Spülbohrverfahren Die vorliegende Erfindung bezieht sich auf bekannte Spülbohrverfahren, bei denen das im niederzubringenden Bohrloch anfallende Bohrklein unter Verwendung einer Spülflüssigkeit an die Tagesoberfläche geschwemmt wird. Zu diesem Zweck wird in solchen Fällen das zwischen dem über dem Bohrloch stehenden Bohrgerät und dem auf der Bohrlochsohle arbeitenden Bohrwerkzeug befindliche Bohrgestänge als durchgehendes, aus einzelnen Stücken zusammengesetztes Rohr ausgebildet, um darin entweder die frisch zugeführte Spülflüssigkeit nach unten oder die mit dem Bohrklein belastete Spülflüssigkeit nach oben fördern zu können. Daraus ergibt sich gleichzeitig aber auch der wesentliche Nachteil, daß das Bohrgestänge, besonders wenn die Bohrung als Saugbohrung durchgeführt wird, einen verhältnismäßig großen Durchmesser und ein dementsprechend großes Gewicht erhält. Letzteres bedingt wiederum außerordentlich aufwendige Einrichtungen zum Heben und Senken des Bohrgestänges und soll deshalb mit Hilfe der erfindungsgemäßen Neuerung weitgehend verringert werden.Drill rods for drilling earth using the directional drilling method The present invention relates to known directional drilling methods in which the cuttings in the borehole to be sunk using a flushing fluid is washed up to the surface. For this purpose, the between the drilling rig above the borehole and the one on the bottom of the borehole working drilling tool located drill rods as a continuous, from individual Pieces of assembled pipe formed to hold either the freshly supplied Flushing liquid down or the flushing liquid contaminated with the cuttings to be able to promote upwards. At the same time, however, the essential thing arises from this Disadvantage that the drill pipe, especially if the hole is carried out as a suction hole becomes, a relatively large diameter and a correspondingly large weight receives. The latter in turn requires extremely complex facilities for Raising and lowering of the drill string and should therefore with the help of the invention Innovation can be largely reduced.

Die Lösung der gestellten Aufgabe besteht darin, daß am Umfang der einzelnen Gestängeabschnitte geschlossene Hohlräume angeordnet sind, die auf Grund des beim Eintauchen des Bohrgestänges in die das Bohrloch füllende Spülflüssigkeit wirksam werdenden Auftriebes dessen Gewicht herabzusetzen vermögen. Als konstruktive Ausgestaltungsformen kommen dabei für die Hohlräume vor allem Mantelrohre in Frage, aber auch in Längsrichtung der Gestängeabschnitte an deren Außenwand verlaufende Rohre können denselben Zweck erfüllen.The solution to the problem is that on the scope of individual rod sections closed cavities are arranged on the ground when the drill string is dipped into the drilling fluid filling the borehole effective buoyancy are able to reduce its weight. As constructive Design forms come into question for the cavities, above all, casing pipes, but also extending in the longitudinal direction of the rod sections on the outer wall Pipes can serve the same purpose.

Claims (1)

Patentanspruch: Bohrgestänge zur Durchführung von Erdbohrungen nach dem Spülbohrverfahren, d a -durch gekennzeichnet, daß am Umfang der einzelnen Gestängeabschnitte geschlossene Hdhlräume angeordnet sind, die auf Grund des beim Eintauchen des Bohrgestänges in die das Bohrloch füllende Spülflüssigkeit wirksam werdenden Auftriebes dessen Gewicht herabzusetzen vermögen.Claim: Drill rods for carrying out earth drilling according to the flushing drilling process, d a -characterized in that on the circumference of the individual rod sections closed hollow spaces are arranged, which due to the immersion of the drill pipe in the drilling fluid that fills the borehole, the buoyancy of the latter becomes effective Able to reduce weight.
DEE25846A 1963-11-11 1963-11-11 Drill rods for carrying out earth boreholes using the flushing method Pending DE1191772B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE25846A DE1191772B (en) 1963-11-11 1963-11-11 Drill rods for carrying out earth boreholes using the flushing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE25846A DE1191772B (en) 1963-11-11 1963-11-11 Drill rods for carrying out earth boreholes using the flushing method

Publications (1)

Publication Number Publication Date
DE1191772B true DE1191772B (en) 1965-04-29

Family

ID=7071865

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE25846A Pending DE1191772B (en) 1963-11-11 1963-11-11 Drill rods for carrying out earth boreholes using the flushing method

Country Status (1)

Country Link
DE (1) DE1191772B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231190B (en) * 1965-10-22 1966-12-29 Wilhelm Tenten G M B H Pipe string consisting of individual pipe sections for the casing of boreholes filled with fluid or the like.
DE1262936B (en) * 1964-10-05 1968-03-14 Shell Int Research Device for carrying out drilling, completion and repair work on an underwater deep borehole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262936B (en) * 1964-10-05 1968-03-14 Shell Int Research Device for carrying out drilling, completion and repair work on an underwater deep borehole
DE1231190B (en) * 1965-10-22 1966-12-29 Wilhelm Tenten G M B H Pipe string consisting of individual pipe sections for the casing of boreholes filled with fluid or the like.

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