GB677824A - Improvements in devices containing hollow explosive charges for perforating or cutting bore-hole linings or casings - Google Patents
Improvements in devices containing hollow explosive charges for perforating or cutting bore-hole linings or casingsInfo
- Publication number
- GB677824A GB677824A GB1743/50A GB174350A GB677824A GB 677824 A GB677824 A GB 677824A GB 1743/50 A GB1743/50 A GB 1743/50A GB 174350 A GB174350 A GB 174350A GB 677824 A GB677824 A GB 677824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- charge
- fuze
- detonator
- plug
- 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 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 8
- 229910052751 metal Inorganic materials 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 4
- 238000009413 insulation Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000004020 conductor Substances 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- 229920000298 Cellophane Polymers 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910001297 Zn alloy Inorganic materials 0.000 abstract 1
- 238000005422 blasting Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000013013 elastic material Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 230000002706 hydrostatic effect Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 229910052754 neon Inorganic materials 0.000 abstract 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 230000037452 priming Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000004753 textile Substances 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 238000009736 wetting Methods 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011701 zinc 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
- E21B43/117—Shaped-charge perforators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/08—Blasting cartridges, i.e. case and explosive with cavities in the charge, e.g. hollow-charge blasting cartridges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/26—Arrangements for mounting initiators; Accessories therefor, e.g. tools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/28—Cartridge cases characterised by the material used, e.g. coatings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Geophysics And Detection Of Objects (AREA)
- Air Bags (AREA)
Abstract
677,824. Blasting devices. SOC. DE PROSPECTION ELECTRIQUE PROCEDES SCHLUMBERGER. Jan. 23, 1950. [Jan. 22, 1949; Jan. 22, 1949; April 5, 1949; April 5, 1949; April 5, 1949; Nov. 8, 1949. Nov. 8, 1949] No. 1743/50. Class 9 (i). [Also in Group XXXVII] An explosive device, Fig. 1, for perforating well casings and like operations comprises a steel block 1 drilled radially to form cylindrical cavities 2, 2, 2<SP>11</SP> in each of which is placed a hollow charge. Axial channels 3, 3<SP>1</SP>, 3<SP>11</SP> between the cavities accommodate a detonating fuze 15. Each charge 5 has a jacket 4 of elastic material, preferably rubber soluble in hydrocarbons. Into each charge 5 is fitted a conical liner 6 having a cylindrical extension 7, the liner preferably being made of a substance with a low vaporisation temperature, e.g., zinc, zinc alloy, or magnesium. The charges are centred in the cavities 2 by a forward washer 9 and a rear washer 8 provided with notches to pass the fuze cord 15. Each cavity 2 is closed by a cap 11 held in position by a spring blade 13 fitting within slots 14 in the block. The cap 11 is preferably of friable, relatively dense material, e.g. cast iron, and its thickness is decreased towards the centre so that the cap will withstand the hydrostatic pressure in the borehole without offering excessive resistance to the blast from the charge. The fuze 15, which is pressed into a slot of part circular-section in each jacket 4 is ignited by a detonator initiated electrically, the conductor wires (not shown) being placed alongisde the fuze. In a modification the cap 11 is screw-threaded and bears against the forward end of the charge. The device shown in Fig. 6 has at the forward end a chamber 16<SP>1</SP> containing a detonator 17 attached to the fuze 15. The chamber is closed by a plug 18. Leads 19, 19<SP>1</SP> from the detonator are connected to metal contacts 21, 21<SP>1</SP> supported by an insulating sleeve 22 in a chamber 20. The leads after leaving the contacts 21, 21<SP>1</SP> are taken along the axial channels 3<SP>1</SP>, 3<SP>11</SP>, etc., to the cable supporting the device and connected to a source of current at ground level. The chamber 20 which is closed by a plug 23 contains a metal float 24 which, as water enters the chamber, rises to short-circuit the detonator 17 through the contacts 21, 21<SP>1</SP> and hence prevent ignition. In a modification the lead wires are covered with a water-pervious textile insulation and wound on a metal mandrel within the chamber 20. Water entering the chamber penetrates the insulation and the wires are shot-circuited through the mandrel. In an alternative arrangement one lead from the detonator is connected to the block 1 which forms the earth return and the second lead is connected through a resistance to a metal tube insulated in the chamber 20. Water entering the chamber 20 destroys the insulation and the igniter 17 is again short-circuited. In another arrangement, Fig. 9, one lead 19<SP>1</SP> is earthed to the block 1 and the other lead is connected through contacts 30, 30<SP>1</SP> to a conductor 27. The contacts 30, 30<SP>1</SP> are held together by a safety-pin type spring 28 held closed by a gummed strip 29. Water entering the chamber 20 detaches the strip 29 and the contacts separate to break the circuit to the igniter 17. Alternatively firing may be prevented by wetting of the ignition compound. The detonating fuze 15 terminates in a sleeve closed by a plug through which the leads 19, 191 pass to a container filled with an ignition compound in which is embedded a bridge wire. The container is of hygroscopic material, e.g., unvarnished cardboard and the plug is water permeable. The sleeve is situated in the chamber 20 so that the water entering the device filters into the sleeve and prevents ignition. The plug may be impermeable while openings in the sleeve allow water to enter. These openings are covered with cellophane until the fuze is placed in position. A warning device connected to a neon lamp may be used to indicate the presence of water in the apparatus. The hollow charge may be frusto-conical, its outer surface converging towards a semi-angle of 30 degrees while the cavity semi-angle is 55 degrees. Each jacket 4 may have a forward extension lodging in the aperture of the block and a rear extension fitting within a recess in the device, a plug holding the jacket 4 in position, while the fuze 15 is separated from the charge by a thin partition. The fuze is then initiated by an electric detonator. Figure 15 shows a hollow charge 5 in a case 6 suitable for insertion in the device of Fig. 1. At the rear of the explosive charge is a priming charge 74 adapted to be ignited by a Buckford fuze 15. The two charges are separated by a conical chamber 76 with vertex angle of the order of 120 degrees. The chamber 76 may be filled with inert material. The charge 74 may be fltted with a liner 77 and a wall 78 may confine the charge 5. The liner 77 may be cup-shaped.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR842035X | 1949-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB677824A true GB677824A (en) | 1952-08-20 |
Family
ID=9311213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1743/50A Expired GB677824A (en) | 1949-01-22 | 1950-01-23 | Improvements in devices containing hollow explosive charges for perforating or cutting bore-hole linings or casings |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE842035C (en) |
FR (2) | FR997993A (en) |
GB (1) | GB677824A (en) |
NL (4) | NL198655A (en) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2891477A (en) * | 1955-07-26 | 1959-06-23 | Du Pont | Initiation device desensitized by fluids |
US2908222A (en) * | 1953-05-25 | 1959-10-13 | Borg Warner | Apparatus for detonating shaped explosive charges |
US2912931A (en) * | 1951-10-23 | 1959-11-17 | Phillips Petroleum Co | Kick-off for gas-lift wells |
US2916991A (en) * | 1954-08-11 | 1959-12-15 | Western Company | Jet gun |
US2957415A (en) * | 1955-11-10 | 1960-10-25 | Montedison Spa | Safety device for electric primers for mines, to protect against ignition by stray electric currents |
DE1102675B (en) * | 1953-07-28 | 1961-03-23 | Pan Geo Atlas Corp | Shaped charge gun for perforating the casing of the borehole |
US2999458A (en) * | 1958-07-01 | 1961-09-12 | Du Pont | Surface wave generator |
US3027838A (en) * | 1956-06-27 | 1962-04-03 | Borg Warner | Shaped charge |
US3100445A (en) * | 1959-01-14 | 1963-08-13 | Borg Warner | Shaped charge and method of firing the same |
US3136249A (en) * | 1961-06-12 | 1964-06-09 | Jet Res Ct Inc | Shaped charge explosive unit and liner therefor |
US3145656A (en) * | 1959-08-14 | 1964-08-25 | Melvin A Cook | Explosive warhead |
US3147707A (en) * | 1961-05-26 | 1964-09-08 | Jet Res Ct Inc | Shaped explosive device and type metal liner for the cavity thereof |
US3211094A (en) * | 1960-05-18 | 1965-10-12 | Jr Thomas P Liddiard | Explosive wave shaper |
US3517615A (en) * | 1961-07-14 | 1970-06-30 | Us Navy | Explosive wave shaper |
DE1478009B1 (en) * | 1963-01-24 | 1972-07-13 | Tech De Rech S Ind & Mecanique | Ignition system for a warhead |
US4213391A (en) * | 1953-05-07 | 1980-07-22 | The United States Of America As Represented By The Secretary Of The Army | Anti-tank mine with peripheral charge initiation |
US4594947A (en) * | 1983-07-28 | 1986-06-17 | Commissariat A L'energie Atomique | Apparatus for shaping a detonation wave |
US5094167A (en) * | 1990-03-14 | 1992-03-10 | Schlumberger Technology Corporation | Shape charge for a perforating gun including an integrated circuit detonator and wire contactor responsive to ordinary current for detonation |
US5322020A (en) * | 1983-08-18 | 1994-06-21 | Giat Industries | Shaped charge |
GB2308177A (en) * | 1995-12-13 | 1997-06-18 | Western Atlas Int Inc | Shaped charges |
US6148263A (en) * | 1998-10-27 | 2000-11-14 | Schlumberger Technology Corporation | Activation of well tools |
US6283227B1 (en) | 1998-10-27 | 2001-09-04 | Schlumberger Technology Corporation | Downhole activation system that assigns and retrieves identifiers |
US6385031B1 (en) | 1998-09-24 | 2002-05-07 | Schlumberger Technology Corporation | Switches for use in tools |
GB2370626A (en) * | 2000-12-30 | 2002-07-03 | Dong Soo Shim | Blasting apparatus for forming horizontal underground cavities |
US6752083B1 (en) | 1998-09-24 | 2004-06-22 | Schlumberger Technology Corporation | Detonators for use with explosive devices |
US6938689B2 (en) | 1998-10-27 | 2005-09-06 | Schumberger Technology Corp. | Communicating with a tool |
SG116639A1 (en) * | 2004-04-23 | 2006-01-27 | Schlumberger Holdings | Method and apparatus for reducing pressure in a perforating gun. |
US7347278B2 (en) | 1998-10-27 | 2008-03-25 | Schlumberger Technology Corporation | Secure activation of a downhole device |
US8342094B2 (en) | 2009-10-22 | 2013-01-01 | Schlumberger Technology Corporation | Dissolvable material application in perforating |
US9464508B2 (en) | 1998-10-27 | 2016-10-11 | Schlumberger Technology Corporation | Interactive and/or secure activation of a tool |
US11346184B2 (en) | 2018-07-31 | 2022-05-31 | Schlumberger Technology Corporation | Delayed drop assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1142536B (en) * | 1952-08-12 | 1963-01-17 | Charlotte Vogt Geb Petersen | Rotationally symmetrical hollow explosive charge |
DE1012877B (en) * | 1953-05-23 | 1957-08-01 | Perforating Guns Atlas Corp | Gun for piercing drill pipes |
GB2213241A (en) * | 1987-11-17 | 1989-08-09 | Secr Defence | Linear hollow charge device |
-
0
- NL NL88944D patent/NL88944C/xx active
- NL NL198656D patent/NL198656A/xx unknown
- NL NL88500D patent/NL88500C/xx active
- NL NL198655D patent/NL198655A/xx unknown
-
1949
- 1949-01-22 FR FR997993D patent/FR997993A/en not_active Expired
- 1949-01-22 FR FR997994D patent/FR997994A/en not_active Expired
-
1950
- 1950-01-23 GB GB1743/50A patent/GB677824A/en not_active Expired
- 1950-09-28 DE DES19706A patent/DE842035C/en not_active Expired
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912931A (en) * | 1951-10-23 | 1959-11-17 | Phillips Petroleum Co | Kick-off for gas-lift wells |
US4213391A (en) * | 1953-05-07 | 1980-07-22 | The United States Of America As Represented By The Secretary Of The Army | Anti-tank mine with peripheral charge initiation |
US2908222A (en) * | 1953-05-25 | 1959-10-13 | Borg Warner | Apparatus for detonating shaped explosive charges |
DE1102675B (en) * | 1953-07-28 | 1961-03-23 | Pan Geo Atlas Corp | Shaped charge gun for perforating the casing of the borehole |
US2916991A (en) * | 1954-08-11 | 1959-12-15 | Western Company | Jet gun |
US2891477A (en) * | 1955-07-26 | 1959-06-23 | Du Pont | Initiation device desensitized by fluids |
US2957415A (en) * | 1955-11-10 | 1960-10-25 | Montedison Spa | Safety device for electric primers for mines, to protect against ignition by stray electric currents |
US3027838A (en) * | 1956-06-27 | 1962-04-03 | Borg Warner | Shaped charge |
US2999458A (en) * | 1958-07-01 | 1961-09-12 | Du Pont | Surface wave generator |
US3100445A (en) * | 1959-01-14 | 1963-08-13 | Borg Warner | Shaped charge and method of firing the same |
US3145656A (en) * | 1959-08-14 | 1964-08-25 | Melvin A Cook | Explosive warhead |
US3211094A (en) * | 1960-05-18 | 1965-10-12 | Jr Thomas P Liddiard | Explosive wave shaper |
US3147707A (en) * | 1961-05-26 | 1964-09-08 | Jet Res Ct Inc | Shaped explosive device and type metal liner for the cavity thereof |
US3136249A (en) * | 1961-06-12 | 1964-06-09 | Jet Res Ct Inc | Shaped charge explosive unit and liner therefor |
US3517615A (en) * | 1961-07-14 | 1970-06-30 | Us Navy | Explosive wave shaper |
DE1478009B1 (en) * | 1963-01-24 | 1972-07-13 | Tech De Rech S Ind & Mecanique | Ignition system for a warhead |
US4594947A (en) * | 1983-07-28 | 1986-06-17 | Commissariat A L'energie Atomique | Apparatus for shaping a detonation wave |
US5322020A (en) * | 1983-08-18 | 1994-06-21 | Giat Industries | Shaped charge |
GB2280012A (en) * | 1983-08-18 | 1995-01-18 | Giat Ind Sa | High performance shaped charge |
GB2280012B (en) * | 1983-08-18 | 1995-06-21 | Giat Ind Sa | Shaped charge |
US5094167A (en) * | 1990-03-14 | 1992-03-10 | Schlumberger Technology Corporation | Shape charge for a perforating gun including an integrated circuit detonator and wire contactor responsive to ordinary current for detonation |
GB2308177A (en) * | 1995-12-13 | 1997-06-18 | Western Atlas Int Inc | Shaped charges |
GB2308177B (en) * | 1995-12-13 | 1999-11-03 | Western Atlas Int Inc | Shaped charges |
US6386108B1 (en) | 1998-09-24 | 2002-05-14 | Schlumberger Technology Corp | Initiation of explosive devices |
US6752083B1 (en) | 1998-09-24 | 2004-06-22 | Schlumberger Technology Corporation | Detonators for use with explosive devices |
US6385031B1 (en) | 1998-09-24 | 2002-05-07 | Schlumberger Technology Corporation | Switches for use in tools |
US7347278B2 (en) | 1998-10-27 | 2008-03-25 | Schlumberger Technology Corporation | Secure activation of a downhole device |
US6604584B2 (en) | 1998-10-27 | 2003-08-12 | Schlumberger Technology Corporation | Downhole activation system |
US6283227B1 (en) | 1998-10-27 | 2001-09-04 | Schlumberger Technology Corporation | Downhole activation system that assigns and retrieves identifiers |
US6938689B2 (en) | 1998-10-27 | 2005-09-06 | Schumberger Technology Corp. | Communicating with a tool |
US6148263A (en) * | 1998-10-27 | 2000-11-14 | Schlumberger Technology Corporation | Activation of well tools |
US9464508B2 (en) | 1998-10-27 | 2016-10-11 | Schlumberger Technology Corporation | Interactive and/or secure activation of a tool |
GB2370626A (en) * | 2000-12-30 | 2002-07-03 | Dong Soo Shim | Blasting apparatus for forming horizontal underground cavities |
GB2370626B (en) * | 2000-12-30 | 2003-03-26 | Dong Soo Shim | Blasting apparatus for forming horizontal underground cavities and blasting method using the same |
SG116639A1 (en) * | 2004-04-23 | 2006-01-27 | Schlumberger Holdings | Method and apparatus for reducing pressure in a perforating gun. |
US8342094B2 (en) | 2009-10-22 | 2013-01-01 | Schlumberger Technology Corporation | Dissolvable material application in perforating |
US8677903B2 (en) | 2009-10-22 | 2014-03-25 | Schlumberger Technology Corporation | Dissolvable material application in perforating |
US11346184B2 (en) | 2018-07-31 | 2022-05-31 | Schlumberger Technology Corporation | Delayed drop assembly |
Also Published As
Publication number | Publication date |
---|---|
NL198655A (en) | |
NL88500C (en) | |
NL88944C (en) | |
FR997993A (en) | 1952-01-14 |
FR997994A (en) | 1952-01-14 |
DE842035C (en) | 1952-06-23 |
NL198656A (en) |
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