GB833164A - Improvements in assemblies for perforating oil wells by means of explosives - Google Patents
Improvements in assemblies for perforating oil wells by means of explosivesInfo
- Publication number
- GB833164A GB833164A GB16932/58A GB1693258A GB833164A GB 833164 A GB833164 A GB 833164A GB 16932/58 A GB16932/58 A GB 16932/58A GB 1693258 A GB1693258 A GB 1693258A GB 833164 A GB833164 A GB 833164A
- Authority
- GB
- United Kingdom
- Prior art keywords
- units
- casing
- charge
- unit
- liner
- 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
- 239000002360 explosive Substances 0.000 title abstract 4
- 230000000712 assembly Effects 0.000 title 1
- 238000000429 assembly Methods 0.000 title 1
- 239000003129 oil well Substances 0.000 title 1
- 239000004411 aluminium Substances 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- 238000005474 detonation Methods 0.000 abstract 2
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 abstract 1
- HZTVIZREFBBQMG-UHFFFAOYSA-N 2-methyl-1,3,5-trinitrobenzene;[3-nitrooxy-2,2-bis(nitrooxymethyl)propyl] nitrate Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O.[O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O HZTVIZREFBBQMG-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- AGUIVNYEYSCPNI-UHFFFAOYSA-N N-methyl-N-picrylnitramine Chemical group [O-][N+](=O)N(C)C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O AGUIVNYEYSCPNI-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000005422 blasting Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 239000003999 initiator Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000000015 trinitrotoluene Substances 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/118—Gun or shaped-charge perforators characterised by lowering in vertical position and subsequent tilting to operating position
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)
- Earth Drilling (AREA)
Abstract
833,164. Blasting and mining cartridges and charges. DU PONT DE NEMOURS & CO., E. I. May 27, 1958 [June 3, 1957], No. 16932/58. Class 9(1) In a collapsible well perforator similar to that described in Specification 777,547 the support frame is omitted and the perforating units 6 are pivotally connected in such a way that the jet formed by detonation of the first charge in the sequence initiates the detonation of the next charge, which in turn initiates the third charge, the process being repeated throughout the chain. The assembly is lowered into the well casing 2 through tubing 4 with the units 6 aligned, an initiator 7, which may be electrical, being attached to the topmost unit 6, which is connected to a lowering line 8. When the assembly is in position, ends 9 attached to the lowest unit 6 are tightened and the line 8 allowed to slacken so that the units 6 turn to the positions of Fig. 2. Each unit comprises a casing 10 enclosing a hollow charge 12 of detonating explosive having a metal liner 13. A booster 15 is housed in an extension of the casing pivoted on a projection 16 from the cover 11 of the adjacent unit 6. Instead of direct pivotal connection between the units, they may be connected together by tubular links filled with a detonating explosive. In an example. RDX was the explosive, the casing being aluminium and the liner copper. Trinitrotoluene, pentolite or tetryl may be used instead of RDX. Steel and aluminium may be used for the liner, which preferably has an apex angle between 30 degrees and 90 degrees.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US833164XA | 1957-06-03 | 1957-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB833164A true GB833164A (en) | 1960-04-21 |
Family
ID=22177546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16932/58A Expired GB833164A (en) | 1957-06-03 | 1958-05-27 | Improvements in assemblies for perforating oil wells by means of explosives |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB833164A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2350379A (en) * | 1999-05-27 | 2000-11-29 | Schlumberger Ltd | Wellbore perforation method and apparatus |
| US6401818B1 (en) | 1999-05-27 | 2002-06-11 | Schlumberger Technology Corporation | Wellbore perforation method and apparatus |
| GB2455851A (en) * | 2007-12-21 | 2009-06-24 | Schlumberger Holdings | Mounting charges in a perforating gun |
-
1958
- 1958-05-27 GB GB16932/58A patent/GB833164A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2350379A (en) * | 1999-05-27 | 2000-11-29 | Schlumberger Ltd | Wellbore perforation method and apparatus |
| GB2350379B (en) * | 1999-05-27 | 2002-02-13 | Schlumberger Ltd | Wellbore perforation method and apparatus |
| US6401818B1 (en) | 1999-05-27 | 2002-06-11 | Schlumberger Technology Corporation | Wellbore perforation method and apparatus |
| GB2455851A (en) * | 2007-12-21 | 2009-06-24 | Schlumberger Holdings | Mounting charges in a perforating gun |
| GB2455851B (en) * | 2007-12-21 | 2010-08-18 | Schlumberger Holdings | System and method for mitigating shock effects during perforating |
| US8276656B2 (en) | 2007-12-21 | 2012-10-02 | Schlumberger Technology Corporation | System and method for mitigating shock effects during perforating |
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