CA2469886A1 - A percussive downhole hammer and piston design for such a hammer - Google Patents
A percussive downhole hammer and piston design for such a hammer Download PDFInfo
- Publication number
- CA2469886A1 CA2469886A1 CA002469886A CA2469886A CA2469886A1 CA 2469886 A1 CA2469886 A1 CA 2469886A1 CA 002469886 A CA002469886 A CA 002469886A CA 2469886 A CA2469886 A CA 2469886A CA 2469886 A1 CA2469886 A1 CA 2469886A1
- Authority
- CA
- Canada
- Prior art keywords
- section
- piston
- extending
- conduit
- conduits
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims 8
- 238000007789 sealing Methods 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 235000018734 Sambucus australis Nutrition 0.000 abstract 1
- 244000180577 Sambucus australis Species 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
This invention relates to a piston (10) for use in a downhole percussive hammer where the piston (10) comprises a first section (11) and a second section (12) at the forward end of the piston where the diameter of the seco nd section (12) is smaller than that of the first section (11). An axial hole (13) extends through the length of the piston (10). At least one first condu it (15) extends from the upper end (16) of the piston (10) to a position intermediate the ends of the first section (11). At least one external secon d conduit (20) formed in the outer surface of the first section (11) extends between but not to the upper and lower ends (16 and 17) of the first section (11). Conduits (18 and 21) extend from the lower end of the first conduit (1 5) and the upper end of the second conduit (20) through the first section (11) to the axial hole (13). The invention provides significant advantages including maintaining high pressure air in the conduits (20 and 21) after and before a ir flow through them.
Claims (14)
1. A piston for use in a downhole percussive hammer comprising:
a first section, a second section at the forward end of said piston having a diameter smaller than that of said first section, an axial hole extending through the length of said piston, at least one first conduit extending from the upper end of said piston to a position intermediate the ends of said first section, at least one external second conduit in the outer surface of said first section extending between but not to the upper and lower ends of said first section;
and conduits extending from the lower end of said first conduit and the upper end of said second conduit through said first section to said axial hole.
a first section, a second section at the forward end of said piston having a diameter smaller than that of said first section, an axial hole extending through the length of said piston, at least one first conduit extending from the upper end of said piston to a position intermediate the ends of said first section, at least one external second conduit in the outer surface of said first section extending between but not to the upper and lower ends of said first section;
and conduits extending from the lower end of said first conduit and the upper end of said second conduit through said first section to said axial hole.
2. A piston according to claim 1 further comprising a peripheral groove extending around the circumference of said first section, said peripheral groove located at the lower end of said second conduits with said second conduits opening into said peripheral groove.
3. A piston according to claim 2 wherein the portion of said first section between said peripheral groove and the lower end of said first section is a sealing flange.
4. A piston according to any one of the preceding claims wherein there are at least three said first and second conduits each spaced around said first section.
5. A piston according to any one of the preceding claims wherein said first conduits comprise holes formed between the upper end of said first section that intersects with said conduits that extend from said axial hole.
6. A piston according to any one of claims 1 to 4 wherein said first conduits comprise a groove or channel in the outer surface of said first section.
7. A piston according to any one of the preceding claims further comprising a tapered portion between said first and second sections that tapers from a diameter that is larger than said second section to a diameter that equals said second section.
8. A piston for use in a downhole percussive hammer comprising:
an axial hole extending through the length of the piston, at least one first groove or channel formed in the external surface of the piston that extends from the upper end of the piston to a position intermediate the ends of the piston, at least one second groove or channel formed in the external surface of the piston that extends from a lower edge of the piston to a point below the upper end of the piston, and conduits extending from the intermediate ends of each first and second groove or channel through the piston to the axial hole of the piston so as to provide a fluid conduit between the axial hole and each of the first and second grooves or channels.
an axial hole extending through the length of the piston, at least one first groove or channel formed in the external surface of the piston that extends from the upper end of the piston to a position intermediate the ends of the piston, at least one second groove or channel formed in the external surface of the piston that extends from a lower edge of the piston to a point below the upper end of the piston, and conduits extending from the intermediate ends of each first and second groove or channel through the piston to the axial hole of the piston so as to provide a fluid conduit between the axial hole and each of the first and second grooves or channels.
9. A piston according to claim 8 further comprising a first section and a second section at the forward end of said piston having a diameter smaller than that of said first section.
10. A piston according to claim 9 further comprising a peripheral groove extending around the circumference of said first section, said peripheral groove located at the lower end of said second groove or channel with said second groove or channel opening into said peripheral groove.
11 11. A piston according to claim 10 wherein the portion of said first section between said peripheral groove and the lower end of said first section is a sealing flange.
12. A piston according to any one of claims 8 to 11 wherein there are at least three said first and second grooves or channels each spaced around said first section.
13. A piston according to any one of claims 8 to 12 further comprising a tapered portion between said first and second sections that tapers from a diameter that is larger than said second section to a diameter that equals said second section.
14. A piston for use in a downhole percussive hammer comprising:
a first section, a second section at the forward end of said piston having a diameter smaller than that of said first section, an axial hole extending through the length of said piston, at least one first hole extending from the upper end of said piston to a position intermediate the ends of said first section that is spaced inwardly from the outer surface of said first section, at least one external second conduit in the outer surface of said first section extending between but not to the upper and lower ends of said first section;
and conduits extending from the lower end of said first conduit and the upper end of said second conduit through said first section to said axial hole.
a first section, a second section at the forward end of said piston having a diameter smaller than that of said first section, an axial hole extending through the length of said piston, at least one first hole extending from the upper end of said piston to a position intermediate the ends of said first section that is spaced inwardly from the outer surface of said first section, at least one external second conduit in the outer surface of said first section extending between but not to the upper and lower ends of said first section;
and conduits extending from the lower end of said first conduit and the upper end of said second conduit through said first section to said axial hole.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPR9366 | 2001-12-10 | ||
| AUPR936601 | 2001-12-10 | ||
| PCT/AU2002/001664 WO2003050378A1 (en) | 2001-12-10 | 2002-12-10 | A percussive downhole hammer and piston design for such a hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2469886A1 true CA2469886A1 (en) | 2003-06-19 |
| CA2469886C CA2469886C (en) | 2010-08-17 |
Family
ID=3833061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2469886A Expired - Fee Related CA2469886C (en) | 2001-12-10 | 2002-12-10 | A percussive downhole hammer and piston design for such a hammer |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA2469886C (en) |
| WO (1) | WO2003050378A1 (en) |
| ZA (1) | ZA200405482B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ136198A3 (en) * | 1998-05-04 | 1999-11-17 | Permon S. R. O. | Air-operated underwater drilling tools |
| CA2295463C (en) * | 1999-01-27 | 2008-04-29 | William N. Patterson | Hydraulic in-the-hole percussion rock drill |
-
2002
- 2002-12-10 WO PCT/AU2002/001664 patent/WO2003050378A1/en active IP Right Grant
- 2002-12-10 CA CA2469886A patent/CA2469886C/en not_active Expired - Fee Related
-
2004
- 2004-07-09 ZA ZA2004/05482A patent/ZA200405482B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA2469886C (en) | 2010-08-17 |
| ZA200405482B (en) | 2005-08-31 |
| WO2003050378A1 (en) | 2003-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2532911A1 (en) | Drill bit | |
| AUPR879901A0 (en) | An improved transmission sleeve | |
| AU735119B2 (en) | Two-piece labyrinth seal for a centrifugal compressor balance piston | |
| US6892831B2 (en) | Method and apparatus for boring through a solid material | |
| WO2003042588A3 (en) | Pipe insert and pipe assembly formed therewith | |
| AU2002347745A1 (en) | A component for being subjected to high thermal load during operation and a method for manufacturing such a component | |
| CA2333516A1 (en) | Arrangement for the removal of cuttings and gas arising from drilling operations | |
| WO2008006345A3 (en) | Dowel composed of a strand arrangement | |
| AU2002359216A1 (en) | End connection for tubes and a method for its manufacturing | |
| CA2041000A1 (en) | Transmission sleeve for a down hole hammer | |
| CA2449857A1 (en) | Wear sleeve | |
| WO2004023013A3 (en) | Method for connecting pipes for high pressure fluids | |
| CA2255630A1 (en) | Integral pup joint | |
| US6736226B2 (en) | Method and apparatus for boring through a solid material | |
| SE522221C2 (en) | Striking rock drill joints | |
| CA2469886A1 (en) | A percussive downhole hammer and piston design for such a hammer | |
| AU2003242165A1 (en) | Method for manufacturing a stator component | |
| WO2005015335A3 (en) | High accuracy low leakage valve for high pressure applications | |
| WO2002038996A3 (en) | Sealed fitting for use with corrugated tubing | |
| ATE302920T1 (en) | SUPPORT TUBE AND CONNECTION ARRANGEMENT | |
| ATE520921T1 (en) | PIPE DRILLING FITTING | |
| WO2002001105A3 (en) | Fitting with pressure relief vent | |
| JPH02150308A (en) | Drilling device having undercut part for producing drilled hole | |
| US4591009A (en) | Drill soundproofing device | |
| USD977677S1 (en) | Extrusion for a draft seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20181210 |