GB768895A - A rock piercing blowpipe having an internal combustion chamber - Google Patents
A rock piercing blowpipe having an internal combustion chamberInfo
- Publication number
- GB768895A GB768895A GB10190/55A GB1019055A GB768895A GB 768895 A GB768895 A GB 768895A GB 10190/55 A GB10190/55 A GB 10190/55A GB 1019055 A GB1019055 A GB 1019055A GB 768895 A GB768895 A GB 768895A
- Authority
- GB
- United Kingdom
- Prior art keywords
- combustion chamber
- ratio
- orifice
- throat
- internal combustion
- 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.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 title abstract 5
- 239000011435 rock Substances 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gas Burners (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
768,895. Earth-boring blowpipes. UNION CARBIDE & CARBON CORPORATION. April 7, 1955 [May 6, 1954], No. 10190/55. Class 68 (1). [Also in Group XI] The fluid-cooled nozzle of an earthboring blowpipe having an internal combustion chamber C for the burning of fluid fuel and oxidant and a flame passage comprising a restricted throat T and a divergent discharge passage D leading to an external orifice is characterized in that the combustion chamber volume and the areas of the throat and external orifice are so proportioned as to provide a ratio of combustion chamber volume to throat area of 1.0 to 5.0 and a ratio of orifice area to throat area of between 1 and 2.5 times the value of the expansion ratio obtained from the equation : wherein: E.R. = expansion ratio. K = ratio of specific heats at constant pressure and at constant volume of the combustion products. P o = chamber pressure (lbs./in.<SP>2</SP>). P m = mouth pressure at orifice (lbs./in.<SP>2</SP>). Specification 657,383 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US768895XA | 1954-05-06 | 1954-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB768895A true GB768895A (en) | 1957-02-20 |
Family
ID=22134785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10190/55A Expired GB768895A (en) | 1954-05-06 | 1955-04-07 | A rock piercing blowpipe having an internal combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB768895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2454698A (en) * | 2007-11-15 | 2009-05-20 | Schlumberger Holdings | Gas fuel drilling torch |
-
1955
- 1955-04-07 GB GB10190/55A patent/GB768895A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2454698A (en) * | 2007-11-15 | 2009-05-20 | Schlumberger Holdings | Gas fuel drilling torch |
| GB2454698B (en) * | 2007-11-15 | 2013-04-10 | Schlumberger Holdings | Gas cutting borehole drilling apparatus |
| US9022139B2 (en) | 2007-11-15 | 2015-05-05 | Schlumberger Technology Corporation | Gas cutting borehole drilling apparatus |
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