CA2820747A1 - Pressurized fluid flow system for a reverse circulation down-the-hole hammer and hammer thereof - Google Patents

Pressurized fluid flow system for a reverse circulation down-the-hole hammer and hammer thereof Download PDF

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Publication number
CA2820747A1
CA2820747A1 CA2820747A CA2820747A CA2820747A1 CA 2820747 A1 CA2820747 A1 CA 2820747A1 CA 2820747 A CA2820747 A CA 2820747A CA 2820747 A CA2820747 A CA 2820747A CA 2820747 A1 CA2820747 A1 CA 2820747A1
Authority
CA
Canada
Prior art keywords
pressurized fluid
piston
hammer
chambers
hole
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.)
Abandoned
Application number
CA2820747A
Other languages
French (fr)
Inventor
Jaime Andres Aros
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.)
Drillco Tools SA
Original Assignee
Drillco Tools SA
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 Drillco Tools SA filed Critical Drillco Tools SA
Priority to CA2820747A priority Critical patent/CA2820747A1/en
Publication of CA2820747A1 publication Critical patent/CA2820747A1/en
Abandoned legal-status Critical Current

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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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers

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)
  • Actuator (AREA)

Abstract

A pressurized fluid flow system for a reverse circulation down-the-hole hammer includes a cylinder and a cylindrical control tube that are respectively coaxially disposed in between the outer casing and the piston of the hammer and in between the piston and the sample tube. Two chambers help to respectively supply and discharge pressurized fluid into and out of the front and rear chambers that exert work on the piston: an internal chamber, defined by a central recess in the inner surfaces of the piston and permanently connected to the source of pressurized fluid, and a discharge chamber, defined by one or more recesses in the inner surface of the outer casing and permanently communicated with the bottom of the hole. The flow of pressurized fluid into the work chambers is respectively controlled by the overlap of a portion of the outer surfaces of the sample tube and a portion of the outer surface portion of the control tube with different portions each of the inner sliding surfaces of the piston, while the flow of pressurized fluid discharged from the work chambers is controlled by the overlap or relative position of the outer sliding surfaces of the piston with the inner surface of the cylinder. A hammer provided with this system has one or more end discharge ports connected to respective longitudinal discharge channels formed on the outer surface of the front end of the outer casing.
CA2820747A 2013-06-21 2013-06-21 Pressurized fluid flow system for a reverse circulation down-the-hole hammer and hammer thereof Abandoned CA2820747A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2820747A CA2820747A1 (en) 2013-06-21 2013-06-21 Pressurized fluid flow system for a reverse circulation down-the-hole hammer and hammer thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2820747A CA2820747A1 (en) 2013-06-21 2013-06-21 Pressurized fluid flow system for a reverse circulation down-the-hole hammer and hammer thereof

Publications (1)

Publication Number Publication Date
CA2820747A1 true CA2820747A1 (en) 2014-12-21

Family

ID=52105751

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2820747A Abandoned CA2820747A1 (en) 2013-06-21 2013-06-21 Pressurized fluid flow system for a reverse circulation down-the-hole hammer and hammer thereof

Country Status (1)

Country Link
CA (1) CA2820747A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019232199A1 (en) * 2018-05-30 2019-12-05 Numa Tool Company Pneumatic drilling with packer slideable along stem drill rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019232199A1 (en) * 2018-05-30 2019-12-05 Numa Tool Company Pneumatic drilling with packer slideable along stem drill rod
US11085242B2 (en) 2018-05-30 2021-08-10 Numa Tool Company Pneumatic drilling with packer slideable along stem drill rod

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Legal Events

Date Code Title Description
FZDE Dead

Effective date: 20160622