CA2777427A1 - Perforation gun having self-closing penetration holes - Google Patents
Perforation gun having self-closing penetration holes Download PDFInfo
- Publication number
- CA2777427A1 CA2777427A1 CA2777427A CA2777427A CA2777427A1 CA 2777427 A1 CA2777427 A1 CA 2777427A1 CA 2777427 A CA2777427 A CA 2777427A CA 2777427 A CA2777427 A CA 2777427A CA 2777427 A1 CA2777427 A1 CA 2777427A1
- Authority
- CA
- Canada
- Prior art keywords
- gun
- barrel
- medium
- gun barrel
- swellable
- 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.)
- Abandoned
Links
- 230000035515 penetration Effects 0.000 title claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 239000011343 solid material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 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
-
- 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
- E21B43/119—Details, e.g. for locating perforating place or direction
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Drilling Tools (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a perforating gun having an outer gun barrel, inside of which an inner barrel is coaxially arranged, carrying perforators that can be ignited by means of a detonating cord leading through the gun barrel and, after ignition, pierce the gun barrel in order to form penetration holes, wherein means are provided for automatically closing the penetration holes after the blast, said means being a swellable medium. In order to ensure that the swellable medium requires little space in the perforating gun and can be easily integrated into the perforating gun, according to the invention the swellable medium is disposed in a laminary manner inside the perforating gun.
Description
Perforation gun having self-closing penetration holes The invention relates to a perforation gun having an outer gun barrel inside of which an inner barrel is coaxially situated, and which bears perforators that are ignitable via a detonating fuse leading through the gun barrel, and which after ignition pierce the gun barrel to form penetration holes, wherein a means is provided for automatically dosing the penetration holes after the shot, and this means is a swellable medium.
Such a perforation gun is described in EP 1 685 308 B1.
Perforation guns are.used in deep hole blasting in the crude oil and natural gas industry as. well as in hydraulic engineering to tie the borehole to the storage horizon. The borehole generally contains a drill hole fluid, which may be an introduced fluid or the medium to be conveyed from the surrounding rock.
A perforation gun is composed of an outer gun barrel, inside of which perforators, usually hollow or projectile charges, are situated, and which shoot radially outwardly through the gun barrel in the case of ignition. The hollow charges are usually supported by a thin-walled support pipe which extends coaxially inside the gun barrel. Penetration holes remain in the gun barrel after the shot.
A problem with this method is that residual pieces and fragments of the perforators and of the components inside the gun barrel may fall into the borehole through the penetration holes after the shot. For this reason, as described in EP 1 685 308, means are provided for automatically closing the CONFIRMATION COPY
WO 2011/045021 PCI'/)/P2010/006212
Such a perforation gun is described in EP 1 685 308 B1.
Perforation guns are.used in deep hole blasting in the crude oil and natural gas industry as. well as in hydraulic engineering to tie the borehole to the storage horizon. The borehole generally contains a drill hole fluid, which may be an introduced fluid or the medium to be conveyed from the surrounding rock.
A perforation gun is composed of an outer gun barrel, inside of which perforators, usually hollow or projectile charges, are situated, and which shoot radially outwardly through the gun barrel in the case of ignition. The hollow charges are usually supported by a thin-walled support pipe which extends coaxially inside the gun barrel. Penetration holes remain in the gun barrel after the shot.
A problem with this method is that residual pieces and fragments of the perforators and of the components inside the gun barrel may fall into the borehole through the penetration holes after the shot. For this reason, as described in EP 1 685 308, means are provided for automatically closing the CONFIRMATION COPY
WO 2011/045021 PCI'/)/P2010/006212
2 penetration holes after the shot, these means being cartridges containing a swellable two-component foam. These cartridges are situated in the gun barrel, and break up by means of the ignited detonating fuse, as the result of which foam emerges from the cartridges, swells up, and plugs the penetration holes.
The object of the invention is to improve a perforation gun according to the preamble of Claim 1 in such a way that the swellable medium requires little space and is easily integratable into the perforation gun. In one embodiment, it is the further aim that preferably no additional room is taken up in the perforation gun.
This object is achieved according to the invention in that the swellable medium is situated in a planar manner inside the perforation gun. Planar structures require less space, and are easily integratable into the perforation gun.
In one preferred embodiment, the swellable medium is provided as a coating in the perforation gun. A coating requires no additional room in the perforation gun, and therefore is easily integratable.
The coating is preferably situated on the interior of the gun barrel.
Alternatively, the coating may be applied to an additional thin-walled pipe located coaxially between the outer gun barrel and the inner barrel. Both barrels are particularly suitable for a coating.
In another embodiment, the swellable medium is applied as a solid material, for example supplied from a roll by wrapping, to the gun barrel or an
The object of the invention is to improve a perforation gun according to the preamble of Claim 1 in such a way that the swellable medium requires little space and is easily integratable into the perforation gun. In one embodiment, it is the further aim that preferably no additional room is taken up in the perforation gun.
This object is achieved according to the invention in that the swellable medium is situated in a planar manner inside the perforation gun. Planar structures require less space, and are easily integratable into the perforation gun.
In one preferred embodiment, the swellable medium is provided as a coating in the perforation gun. A coating requires no additional room in the perforation gun, and therefore is easily integratable.
The coating is preferably situated on the interior of the gun barrel.
Alternatively, the coating may be applied to an additional thin-walled pipe located coaxially between the outer gun barrel and the inner barrel. Both barrels are particularly suitable for a coating.
In another embodiment, the swellable medium is applied as a solid material, for example supplied from a roll by wrapping, to the gun barrel or an
3 additional thin-walled pipe which is located coaxially between the gun barrel and the inner barrel. Wrapping is a simple manual activity which is also cost-effective.
The swellable medium may also be applied only in the region of the penetration holes as a solid material, for example as a circular blank, to the gun barrel and/or an additional thin-walled pipe which is located coaxially between the gun barrel and the inner barrel. Circular blanks are easily manufactured and applied.
In another preferred embodiment, the swellable medium itself is a pipe or tube which is located coaxially between the outer gun barrel and the inner barrel.
In all embodiments, the swellable medium may be activated by igniting the perforators via contact with the borehole medium such as oil, gas, water, drilling fluids used in deep hole drilling, or by other borehole-related influences, whereby the swellable medium swells up and thus closes the penetration holes.
In one preferred embodiment, the swellable medium is composed of an elastomer compound which is activated on contact with, for example, = oil = gas = other types of hydrocarbons = water = borehole drilling fluids used in deep hole drilling = explosive gases from perforators,
The swellable medium may also be applied only in the region of the penetration holes as a solid material, for example as a circular blank, to the gun barrel and/or an additional thin-walled pipe which is located coaxially between the gun barrel and the inner barrel. Circular blanks are easily manufactured and applied.
In another preferred embodiment, the swellable medium itself is a pipe or tube which is located coaxially between the outer gun barrel and the inner barrel.
In all embodiments, the swellable medium may be activated by igniting the perforators via contact with the borehole medium such as oil, gas, water, drilling fluids used in deep hole drilling, or by other borehole-related influences, whereby the swellable medium swells up and thus closes the penetration holes.
In one preferred embodiment, the swellable medium is composed of an elastomer compound which is activated on contact with, for example, = oil = gas = other types of hydrocarbons = water = borehole drilling fluids used in deep hole drilling = explosive gases from perforators,
4 and swells up, thus plugging the penetration holes.
The swellable medium may also be activated by matching the gun internal pressure to the pressure present in the borehole, which is generally much higher. This is achieved by properly penetrating the gun outer wall by means of the perforators which are ignited in the gun.
It is preferred to use a swellable planar medium inside a perforation gun having an outer gun barrel inside of which an inner barrel is coaxially situated, and which bears perforators that are ignitable via a detonating fuse leading through the gun barrel, and which after ignition pierce the gun barrel to form penetration holes, wherein the swellable medium is activated by the ignition of the perforators via contact with the borehole medium such as oil, gas, water, drilling fluids used in deep hole drilling, or by other borehole-related influences, swells up, and thus closes the penetration holes.
The swellable medium may be provided as a coating in the perforation gun, applied as a solid material by wrapping, or may be a pipe or tube itself which' is located coaxially between the outer gun barrel and the inner barrel.
The invention is characterized in that no "debris" (fragments from the perforators) falls into the borehole. No external intervention is necessary to close the penetration holes.
The swellable medium may also be activated by matching the gun internal pressure to the pressure present in the borehole, which is generally much higher. This is achieved by properly penetrating the gun outer wall by means of the perforators which are ignited in the gun.
It is preferred to use a swellable planar medium inside a perforation gun having an outer gun barrel inside of which an inner barrel is coaxially situated, and which bears perforators that are ignitable via a detonating fuse leading through the gun barrel, and which after ignition pierce the gun barrel to form penetration holes, wherein the swellable medium is activated by the ignition of the perforators via contact with the borehole medium such as oil, gas, water, drilling fluids used in deep hole drilling, or by other borehole-related influences, swells up, and thus closes the penetration holes.
The swellable medium may be provided as a coating in the perforation gun, applied as a solid material by wrapping, or may be a pipe or tube itself which' is located coaxially between the outer gun barrel and the inner barrel.
The invention is characterized in that no "debris" (fragments from the perforators) falls into the borehole. No external intervention is necessary to close the penetration holes.
Claims (12)
1. Perforation gun having an outer gun barrel inside of which an inner barrel is coaxially situated, and which bears perforators that are ignitable via a detonating fuse leading through the gun barrel and which after ignition pierce the gun barrel to form penetration holes, wherein a means is provided for automatically closing the penetration holes after the shot, and this means is a swellable medium, characterized in that the swellable medium is situated in a planar manner inside the perforation gun.
2. Perforation gun according to Claim 1, characterized in that the swellable medium is provided as a coating in the perforation gun.
3. Perforation gun according to Claim 2, characterized in that the coating is situated on the interior of the gun barrel.
4. Perforation gun according to Claim 2, characterized in that the coating is situated on an additional thin-walled pipe which is located coaxially between the outer gun barrel and the inner barrel.
5. Perforation gun according to Claim 1, characterized in that the swellable medium is applied as a solid material, for example supplied from a roll by wrapping, to the gun barrel or an additional thin-walled pipe which is located coaxially between the gun barrel and the inner barrel.
6. Perforation gun according to one of the preceding claims, characterized in that the swellable medium is applied only in the region of the penetration holes as a solid material, for example as a circular blank, to the gun barrel and/or an additional thin-walled pipe which is located coaxially between the gun barrel and the inner barrel
7. Perforation gun according to Claim 1, characterized in that the swellable medium itself is a pipe or tube which is located coaxially between the outer gun barrel and the inner barrel.
8 Perforation gun according to one of the preceding claims, characterized in that the swellable medium is activated by the ignition of the perforators via contact with the borehole medium such as oil, gas, water, drilling fluids used in deep hole drilling, or by other borehole-related influences, swells up, and thus closes the penetration holes.
9 Use of a swellable planar medium inside a perforation gun, having an outer gun barrel inside of which an inner barrel is coaxially situated, and which bears perforators that are ignitable via a detonating fuse leading through the gun barrel, and which after ignition pierce the gun barrel to form penetration holes, wherein the swellable medium is activated by the ignition of the perforators via contact with the borehole medium such as oil, gas, water, drilling fluids used in deep hole drilling, or by other borehole-related influences, swells up, and thus closes the penetration holes.
Use according to Claim 9, characterized in that the swellable medium is provided as a coating in the perforation gun
11. Use according to Claim 9, characterized in that the swellable medium is applied as a solid material by wrapping
12 Use according to Claim 9, characterized in that the swellable medium itself is a pipe or tube which is located coaxially between the outer gun barrel and the inner barrel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009049290.9 | 2009-10-13 | ||
| DE102009049290 | 2009-10-13 | ||
| PCT/EP2010/006212 WO2011045021A2 (en) | 2009-10-13 | 2010-10-12 | Perforating gun having self-closing penetration holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2777427A1 true CA2777427A1 (en) | 2011-04-21 |
Family
ID=43734799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2777427A Abandoned CA2777427A1 (en) | 2009-10-13 | 2010-10-12 | Perforation gun having self-closing penetration holes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20120198988A1 (en) |
| EP (1) | EP2488720A2 (en) |
| AR (1) | AR078618A1 (en) |
| CA (1) | CA2777427A1 (en) |
| DE (1) | DE102010048044A1 (en) |
| WO (1) | WO2011045021A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8356666B2 (en) | 2010-01-19 | 2013-01-22 | Halliburton Energy Services, Inc | Wellbore perforation tool |
| BR112016029473A2 (en) * | 2014-07-22 | 2017-08-22 | Halliburton Energy Services Inc | cannoning device and method for making a cannoning device |
| US10662745B2 (en) | 2017-11-22 | 2020-05-26 | Exxonmobil Upstream Research Company | Perforation devices including gas supply structures and methods of utilizing the same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3305032A (en) * | 1964-06-11 | 1967-02-21 | Schlumberger Technology Corp | Well completion apparatus |
| US4756371A (en) * | 1986-12-15 | 1988-07-12 | Brieger Emmet F | Perforation apparatus and method |
| CA2539244C (en) | 2003-09-27 | 2012-02-21 | Dynaenergetics Gmbh & Co. Kg | Perforation gun system producing self-closing perforation holes |
| US7430965B2 (en) * | 2004-10-08 | 2008-10-07 | Halliburton Energy Services, Inc. | Debris retention perforating apparatus and method for use of same |
| WO2008033120A2 (en) * | 2006-09-12 | 2008-03-20 | Halliburton Energy Services, Inc. | Method and apparatus for perforating and isolating perforations in a wellbore |
| US20090139708A1 (en) * | 2007-06-06 | 2009-06-04 | Baker Hughes Incorporated | Wrap-On Reactive Element Barrier Packer and Method of Creating Same |
| US8356666B2 (en) * | 2010-01-19 | 2013-01-22 | Halliburton Energy Services, Inc | Wellbore perforation tool |
-
2010
- 2010-10-12 US US13/501,514 patent/US20120198988A1/en not_active Abandoned
- 2010-10-12 WO PCT/EP2010/006212 patent/WO2011045021A2/en active Application Filing
- 2010-10-12 DE DE102010048044A patent/DE102010048044A1/en not_active Withdrawn
- 2010-10-12 EP EP10790718A patent/EP2488720A2/en not_active Withdrawn
- 2010-10-12 CA CA2777427A patent/CA2777427A1/en not_active Abandoned
- 2010-10-13 AR ARP100103730A patent/AR078618A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011045021A2 (en) | 2011-04-21 |
| AR078618A1 (en) | 2011-11-23 |
| DE102010048044A1 (en) | 2011-04-14 |
| EP2488720A2 (en) | 2012-08-22 |
| US20120198988A1 (en) | 2012-08-09 |
| WO2011045021A3 (en) | 2011-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20131015 |