US2022976A - Apparatus for perforating well casings - Google Patents
Apparatus for perforating well casings Download PDFInfo
- Publication number
- US2022976A US2022976A US736473A US73647334A US2022976A US 2022976 A US2022976 A US 2022976A US 736473 A US736473 A US 736473A US 73647334 A US73647334 A US 73647334A US 2022976 A US2022976 A US 2022976A
- Authority
- US
- United States
- Prior art keywords
- barrels
- chambers
- well casings
- projectile
- perforating well
- 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 - Lifetime
Links
- 239000002360 explosive Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
Definitions
- sive is fired by means of an electrical detonator, the projectiles simultaneously perforate the casing on opposite sides, the recoil being thus neutralized, and possible damage to casing as well as waste of explosive energy being prevented.
- the body C of the perforator contains two obliquely located explosive chambers A and A1, which lie symmetrically with regard to the vertical section as well as with regard to a horizontal cross-section taken at the middle (in some cases the chambers A and A1 may be connected to form one chamber common to four or more projectile containing barrels).
- These chambers are connected with symmetrically arranged projectile barrels B1, Ba, Ba and B4, holding projectiles P1, P2, P3 and P4.
- projectile barrels are perpendicular to the axis of the body and are all bored in the same plane.
- the cham- 10 bers A and A1 are closed by means of perforated plugs K, through which a wire is passed to ignite the detonating cap H.
- the plugs K may be braced against each other by means of a special wedge (not shown) to prevent their being eject- 15' ed by the explosion.
- the wire is insulated by a rubber stopper L, held in place by a wooden plug M.
- the inner ends G of the barrels B1, B3, B3, and B4, are of trunconical' shape, and hold a copper plug
- This plug F which may be made 20 of any other material having semi-plastic properties under high pressures, is pressed into its position by the outside pressure, whereby it seals the explosive chamber.
- a ringv R holds the projectile in its position. 25
- any number of perforators of the type described above may be combined to form achain by any connecting means such, for example, as two-part sleeves D, which grip a shoulder E formed on the body of the p rforator.
- a copper ring, or a ring 85 of other semi lastic material may be interposed to dampen the unavoidable jolts.
- the middle part of the body may be thickened eccentrically to permit a more favourable location of the diiferent parts.
- a casing periorator comprising a body member having two elongated obliquely and symmetrically located -explosive containing chambers, said chambers converging to a common out- 45 side opening, each of said chambers being in communication at either end with a projectileholding barrel, said barrels having their outside openings facing diametrically opposite sides and their axes perpendicularato the axis of the per- 50 forator body and in the same vertical plane, and means for simultaneously exploding the charges in said chambers.
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)
- Portable Nailing Machines And Staplers (AREA)
Description
Dec. 3', 1935. PR|KEL 2,022,976
APPARATUS FOR PERFORATI'NG WELL CASINGS Filed July 23, 1934 \nvenior: Gorffried Prikzl Patented Dec. 3, 1935 UNITED STATES PATENT OFFICE APPARATUS FOR PERFORATING WELL CASINGS' Gottfried Prikel, Bucharest, Rumania, assignor to Shell Development Company, San Francisco, Cahf., a corporation of Delaware Application July 23, 1934, Serial No. 736,473 In Rumania July 28, 1933 2 Claims. (01. 81-188) This invention pertains to the art of perforatrels, each holding a projectile. When the explo-.
sive is fired by means of an electrical detonator, the projectiles simultaneously perforate the casing on opposite sides, the recoil being thus neutralized, and possible damage to casing as well as waste of explosive energy being prevented.
I have now found that the use of a perforator of this type in small-diameter casings gives rise to considerable difliculties, since in that case it is impossible to design an adequately large explosive chamber in combination with sufliciently long projectile barrels.
It is the purpose of this invention to solve these difficulties by providing a relatively elongated explosive containing chamber or several of such chambers, each in communication with two or.
more projectile holding barrels positioned at different levels, the axes of these elongated chambers being at a substantial angle with the axes of the barrels. Since the gases of an explosion act with equal force in all directions, the pressure exerted on the projectiles will be in this case the same as if the axes of the explosive chamber and of the barrels were coincident. j
The principle of my invention will be clearfrom the following description taken with reference to the drawing attached, which gives a vertical cross-sectional view of a preferred embodiment of my device. It is understood that neither the description nor the drawing are intended to limit my invention to this one form since, as has been stated above, the axis of the elon'g'atedexplosive chamber, or chambers, may be positioned at any angle, including a right angle, to the axes-of the barrels, and therefore coincide, or lie parallel with the axis of the perforator itself.
Referring to this drawing, the body C of the perforator contains two obliquely located explosive chambers A and A1, which lie symmetrically with regard to the vertical section as well as with regard to a horizontal cross-section taken at the middle (in some cases the chambers A and A1 may be connected to form one chamber common to four or more projectile containing barrels). These chambers are connected with symmetrically arranged projectile barrels B1, Ba, Ba and B4, holding projectiles P1, P2, P3 and P4. Pref- 6' erably, there should be at least four barrels to each perforator, although any number which is a multiple of four may be used. The projectile barrels are perpendicular to the axis of the body and are all bored in the same plane. The cham- 10 bers A and A1 are closed by means of perforated plugs K, through which a wire is passed to ignite the detonating cap H. The plugs K may be braced against each other by means of a special wedge (not shown) to prevent their being eject- 15' ed by the explosion. The wire is insulated by a rubber stopper L, held in place by a wooden plug M. The inner ends G of the barrels B1, B3, B3, and B4, are of trunconical' shape, and hold a copper plug This plug F, which may be made 20 of any other material having semi-plastic properties under high pressures, is pressed into its position by the outside pressure, whereby it seals the explosive chamber. A ringv R holds the projectile in its position. 25
All parts of the perforator are symmetrical and are shown arranged in the same plane, so that all the reactions are balanced in the interior of the body. No recoil effect causing damage to the casing or to the device is therefore possible. 30
Any number of perforators of the type described above may be combined to form achain by any connecting means such, for example, as two-part sleeves D, which grip a shoulder E formed on the body of the p rforator. A copper ring, or a ring 85 of other semi lastic material may be interposed to dampen the unavoidable jolts.
The middle part of the body may be thickened eccentrically to permit a more favourable location of the diiferent parts.
I claim-as my invention:
.1. A casing periorator comprising a body member having two elongated obliquely and symmetrically located -explosive containing chambers, said chambers converging to a common out- 45 side opening, each of said chambers being in communication at either end with a projectileholding barrel, said barrels having their outside openings facing diametrically opposite sides and their axes perpendicularato the axis of the per- 50 forator body and in the same vertical plane, and means for simultaneously exploding the charges in said chambers. I
2. A plurality of well casing peifora'tors de-" scribed in claim 1 connected together in series.
GOT'I'FRIED PRIKEL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO2022976X | 1933-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2022976A true US2022976A (en) | 1935-12-03 |
Family
ID=20129247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US736473A Expired - Lifetime US2022976A (en) | 1933-07-28 | 1934-07-23 | Apparatus for perforating well casings |
Country Status (1)
Country | Link |
---|---|
US (1) | US2022976A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445047A (en) * | 1940-01-22 | 1948-07-13 | Lane Wells Co | Gun perforator |
US2783720A (en) * | 1953-09-21 | 1957-03-05 | Petersen Oven Co | Baking oven |
-
1934
- 1934-07-23 US US736473A patent/US2022976A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445047A (en) * | 1940-01-22 | 1948-07-13 | Lane Wells Co | Gun perforator |
US2783720A (en) * | 1953-09-21 | 1957-03-05 | Petersen Oven Co | Baking oven |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105986787B (en) | Bulkhead assembly with pivotable electrical contact assembly | |
US2399211A (en) | Method of perforating well casings | |
US2889775A (en) | Open hole perforator firing means | |
US2402153A (en) | Gun perforator | |
WO2019199346A3 (en) | Explosive detonating system and components | |
US2326406A (en) | Gun perforator | |
US2925775A (en) | Well casing perforator | |
US2022976A (en) | Apparatus for perforating well casings | |
US3151556A (en) | Metallic plug for stemming bore holes | |
US2462784A (en) | Well perforating gun | |
US2026061A (en) | Apparatus for perforating well casings | |
US2761383A (en) | Non-expendible gun for use in jet perforating | |
US3169480A (en) | Safety device for detonator cord | |
US2947251A (en) | Shaped-charge well perforator | |
US2391932A (en) | Gun perforator | |
US2393629A (en) | Explosive cartridge | |
US20210148688A1 (en) | Connector for blast-triggering device | |
US3116690A (en) | Fluid sensitive detonator assembly | |
US3520986A (en) | No-strip explosion connector | |
US2381900A (en) | Delay element for fuses | |
US2947252A (en) | Shaped charge unit for well perforators | |
US1361286A (en) | Aerial torpedo | |
US1991856A (en) | Fuse connection | |
US2779284A (en) | Explosion initiating device | |
CN203772146U (en) | Double-path public cavity non-electric-transmission explosion initiation system |