US20220074288A1 - Shaped charge utilizing polymer coated petn - Google Patents
Shaped charge utilizing polymer coated petn Download PDFInfo
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- US20220074288A1 US20220074288A1 US17/419,223 US201917419223A US2022074288A1 US 20220074288 A1 US20220074288 A1 US 20220074288A1 US 201917419223 A US201917419223 A US 201917419223A US 2022074288 A1 US2022074288 A1 US 2022074288A1
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- shaped charge
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- 229920000642 polymer Polymers 0.000 title claims abstract description 56
- 239000002360 explosive Substances 0.000 claims abstract description 92
- TZRXHJWUDPFEEY-UHFFFAOYSA-N Pentaerythritol Tetranitrate Chemical compound [O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O TZRXHJWUDPFEEY-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 17
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 8
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910001369 Brass Inorganic materials 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 12
- 239000010951 brass Substances 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 229910052725 zinc Inorganic materials 0.000 claims description 12
- 239000011701 zinc Substances 0.000 claims description 12
- 150000002739 metals Chemical class 0.000 claims description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052770 Uranium Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052787 antimony Inorganic materials 0.000 claims description 6
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052797 bismuth Inorganic materials 0.000 claims description 6
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 6
- 239000011135 tin Substances 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011133 lead Substances 0.000 claims description 4
- 238000005755 formation reaction Methods 0.000 description 13
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000012255 powdered metal Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- YSIBQULRFXITSW-OWOJBTEDSA-N 1,3,5-trinitro-2-[(e)-2-(2,4,6-trinitrophenyl)ethenyl]benzene Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1\C=C\C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O YSIBQULRFXITSW-OWOJBTEDSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000000026 Pentaerythritol tetranitrate Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- UZGLIIJVICEWHF-UHFFFAOYSA-N octogen Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)CN([N+]([O-])=O)C1 UZGLIIJVICEWHF-UHFFFAOYSA-N 0.000 description 1
- 229960004321 pentaerithrityl tetranitrate Drugs 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- F42B1/032—Shaped or hollow charges characterised by the material of the liner
-
- 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
- F42B1/028—Shaped or hollow charges characterised by the form of the liner
Definitions
- the present disclosure relates, in general, to shape charges and, in particular, to shape charges configured for perforating formations in wellbores.
- Shaped charges are typically used in oil and gas operations for perforating formations surrounding wellbores in order to access hydrocarbon reservoirs. These types of shaped charges typically are loaded with a main load explosive and a booster explosive.
- the main load explosive is typically a secondary high explosive such as PETN, RDX, HMX, or HNS that has been desensitized by the application of a wax or polymer coating to the explosive crystals.
- the booster explosive is typically the same secondary high explosive, except that the explosive has been rendered more sensitive by utilizing the material in its pure form (i.e., uncoated crystals). Oilwell perforators utilizing these combinations of explosives are quite effective at perforating formations but due to the sensitive nature of the booster explosive handling of such charges requires extreme care. This is particularly true for the explosive PETN, since molecularly it is inherently more sensitive than RDX, HMX, and HNS, and even more so when it is uncoated.
- FIG. 1 is an illustration of a well operations site where perforations are created in formations surrounding a wellbore, in accordance with certain example embodiments;
- FIG. 2 illustrated is a shaped charge for formation perforation in a wellbore, in accordance with certain example embodiments.
- FIG. 3 illustrated is another shaped charge for formation perforation in a wellbore, in accordance with certain example embodiments.
- the disclosure describes a shaped charge utilizing polymer-coated PETN (Pentaerythritol tetranitrate) both as a main load explosive and as a booster explosive.
- the shaped charge includes a shaped section filled with the booster explosive and the main load explosive.
- the shaped section may have, but not be limited to, conical, hemispherical, or parabolic geometry.
- the shaped charge includes a metal or metal alloy liner, or even one fabricated using powder metallurgy.
- the polymer coating for the PETN is a low-density polyethylene.
- the use of the polymer-coated PETN eliminates the need to use separate explosive charges for the main load and booster that are typically required in oilwell perforators.
- the polymer-coated PETN has sufficient inherent sensitivity to be used as a booster explosive without being overly sensitive to the impact, friction, and electrostatic discharge hazards normally associated with pure, uncoated booster explosives.
- the same polymer-coated PETN is sufficiently insensitive such that it can be used as the main load explosive fill for shaped charges utilized in oil and gas applications.
- the advantage of using the polymer-coated PETN in such way is that the shaped charge can be loaded with one common explosive; there is no need to have separate explosives for the booster and main load.
- the site 10 includes a winch for running a cable 12 , such as an electric wireline, through a well head 14 and down a well casing 16 in a wellbore to position a perforation gun 18 near the reservoir deposit.
- the perforation gun 18 is loaded with multiple shaped charges 20 that utilize a polymer coated PETN. Once in position, the perforation gun 18 can be triggered remotely using wireless or wired activation. Once triggered, the shaped charges are detonated and perforations 22 are created through the casing 16 and formation that allows access to the reservoir deposit.
- the shaped charge 40 includes a casing 42 with a hollowed out section, such as a conical section.
- the conical section can include a booster explosive section 44 in ballistic communication with a detonating cord located inside the perforation gun 18 .
- the booster explosive section 44 is filled with a first portion of polymer-coated PETN, and likewise the main load section 46 is filled with a second portion of polymer coated REIN.
- the polymer for the PETN is based on low-density polyethylene.
- polyethylene coated RDX (Royal Demolition eXplosive) can be used as booster and main load explosive.
- the shaped charge does not have to be loaded during manufacture in two distinct steps, i.e., in two geometrical sections using two explosive loadings that are in fact the same material. In production, this charge can be loaded in one step using one total amount of explosive (booster and main load added together). The entire explosive filling consolidates into the charge during a single pressing step.
- the shaped charge 40 also includes a conical liner 48 surrounding and encapsulating the explosives.
- the casing 42 can be made of at least one of steel, zinc, aluminum, copper, brass, ceramics and glass.
- the conical liner 48 can be made of a mixture of metals such as copper and lead. Other metals may be included or substituted such as brass, bismuth, tin, zinc, silver, antimony, cobalt, nickel, tungsten, uranium or other malleable, ductile metals in proportions and formulations known to the aq. Other materials can also be included in the mixture, such as certain plastics, polymers, and graphite. Fabrication methodologies for the liner include wrought, machined, and powdered-metal techniques.
- the conical liner 48 of a typical shaped charge is internally open. When the explosives are detonated, the liner 48 collapses into the internal space and forms a jet emanating from the casing 42 as a very high velocity stream of metal.
- the shaped charge 60 includes similar features to that of FIG. 2 , the exception being the hollowed out section.
- the shaped charge 60 includes a casing 62 with a hollowed out section and, in this particular embodiment, the hollowed out section is generally parabolic or even hemispherical in shape.
- the parabolic or hemisphere sec ion can include a booster explosive section 64 in ballistic communication with a detonating cord located inside the perforation gun 18 .
- the booster explosive section 64 is filled with a first portion of polymer-coated PETN, and likewise the main load section 66 is filled with a second portion of polymer coated PETN.
- the polymer for the PETN is based on low-density polyethylene.
- the shaped charge 60 also includes a generally parabolic or hemispherical liner 68 surrounding and encapsulating the explosives.
- the easing 62 can be made of at least one of steel, zinc, aluminum, copper, brass, ceramics and glass.
- the generally parabolic or hemispherical liner 68 can be made of a mixture of metals such as copper and lead.
- the liner include wrought, machined, and powdered-metal techniques.
- the generally parabolic or hemispherical liner 68 of atypical shaped charge is internally open. When the explosives are detonated, the liner 68 collapses into the internal space and causes it to be ejected from the casing 62 .
- the ejected material may be a high velocity stream of metal or explosively-formed projectile.
- a shaped charge for perforating a formation surrounding a wellbore comprising: a casing having a section loaded with polymer-coated explosives; and a liner encapsulating the section with the polymer coated explosives;
- Clause 2 the shaped charge of clause 1, wherein the casing is made of at least one of steel, zinc, copper, brass, aluminum, ceramics, and glass;
- the shaped charge of clause 1, wherein the liner is made of at least one of copper, lead, brass, bismuth, tin, zinc, silver, antimony, cobalt, nickel, tungsten, uranium and other malleable, ductile metals;
- the shaped charge of clause 1, wherein the section filled with the polymer coated explosive includes a first section with a first polymer-coated explosive and a second section with a second polymer-coated explosive.
- Clause 9 the shaped charge of clause 8, wherein the first section and the second section are common, and include a first and second polymer-coated explosive that are common.
- a method of using shaped charges for perforating a formation surrounding a wellbore comprising: placing shaped charge devices on a well casing; setting the well casing in the wellbore using a downhole running tool; and detonating the shaped charge devices; wherein the shaped charge devices comprise: a casing having a section with polymer-coated explosives; and a liner encapsulating the section with the polymer coated explosives;
- Clause 11 the method of clause 10, wherein the casing is made of at least one of steel, zinc, copper, brass, aluminum, ceramics, and glass;
- the liner is made of at least one of copper, lead, brass, bismuth, tin, zinc, silver, antimony, cobalt, nickel, tungsten, uranium and other malleable, ductile metals;
- section filled with the polymer coated explosive includes a first section having a first polymer-coated explosive and a second section having a second polymer-coated explosive;
- Clause 18 the method of clause 17, wherein the first section and the second section are common, and include a first and second polymer-coated explosive that are common;
- a shaped charge for perforating a formation surrounding a wellbore comprising: a casing enclosing a polymer-coated booster explosive and a polymer-coated main load explosive and a liner encapsulating the polymer-coated explosives;
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Abstract
Description
- The present disclosure relates, in general, to shape charges and, in particular, to shape charges configured for perforating formations in wellbores.
- Shaped charges, sometimes called oilwell perforators, are typically used in oil and gas operations for perforating formations surrounding wellbores in order to access hydrocarbon reservoirs. These types of shaped charges typically are loaded with a main load explosive and a booster explosive. The main load explosive is typically a secondary high explosive such as PETN, RDX, HMX, or HNS that has been desensitized by the application of a wax or polymer coating to the explosive crystals. The booster explosive is typically the same secondary high explosive, except that the explosive has been rendered more sensitive by utilizing the material in its pure form (i.e., uncoated crystals). Oilwell perforators utilizing these combinations of explosives are quite effective at perforating formations but due to the sensitive nature of the booster explosive handling of such charges requires extreme care. This is particularly true for the explosive PETN, since molecularly it is inherently more sensitive than RDX, HMX, and HNS, and even more so when it is uncoated.
- For a more complete understanding of the features and advantages of the present disclosure, reference is now made to the detailed description along with the accompanying figures in which corresponding numerals in the different figures refer to corresponding parts and in which:
-
FIG. 1 is an illustration of a well operations site where perforations are created in formations surrounding a wellbore, in accordance with certain example embodiments; -
FIG. 2 illustrated is a shaped charge for formation perforation in a wellbore, in accordance with certain example embodiments; and -
FIG. 3 illustrated is another shaped charge for formation perforation in a wellbore, in accordance with certain example embodiments. - While the making and using of various embodiments of the present disclosure are discussed in detail below, it should be appreciated that the present disclosure provides many applicable inventive concepts, which can be embodied in a wide variety of specific contexts. The specific embodiments discussed herein are merely illustrative and do not delimit the scope of the present disclosure. In the interest of clarity, not all features of an actual implementation may be described in the present disclosure. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming but would be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.
- The disclosure describes a shaped charge utilizing polymer-coated PETN (Pentaerythritol tetranitrate) both as a main load explosive and as a booster explosive. In an embodiment, the shaped charge includes a shaped section filled with the booster explosive and the main load explosive. In this embodiment, the shaped section may have, but not be limited to, conical, hemispherical, or parabolic geometry. In some embodiments, the shaped charge includes a metal or metal alloy liner, or even one fabricated using powder metallurgy. In an embodiment, the polymer coating for the PETN is a low-density polyethylene. The use of the polymer-coated PETN eliminates the need to use separate explosive charges for the main load and booster that are typically required in oilwell perforators. The polymer-coated PETN has sufficient inherent sensitivity to be used as a booster explosive without being overly sensitive to the impact, friction, and electrostatic discharge hazards normally associated with pure, uncoated booster explosives. In addition, the same polymer-coated PETN is sufficiently insensitive such that it can be used as the main load explosive fill for shaped charges utilized in oil and gas applications. The advantage of using the polymer-coated PETN in such way is that the shaped charge can be loaded with one common explosive; there is no need to have separate explosives for the booster and main load.
- Referring to
FIG. 1 , illustrated is a well operations site during the perforation of a formation to access a reservoir deposit using a shaped charge utilizing polymer coated PETN, in accordance with certain example embodiments, denoted generally as 10. Thesite 10 includes a winch for running acable 12, such as an electric wireline, through awell head 14 and down awell casing 16 in a wellbore to position aperforation gun 18 near the reservoir deposit. Theperforation gun 18 is loaded with multiple shaped charges 20 that utilize a polymer coated PETN. Once in position, theperforation gun 18 can be triggered remotely using wireless or wired activation. Once triggered, the shaped charges are detonated andperforations 22 are created through thecasing 16 and formation that allows access to the reservoir deposit. - Referring now to
FIG. 2 , illustrated is a shaped charge for formation perforation in the wellbore, denoted generally as 40. Theshaped charge 40 includes acasing 42 with a hollowed out section, such as a conical section. The conical section can include a boosterexplosive section 44 in ballistic communication with a detonating cord located inside theperforation gun 18. The boosterexplosive section 44 is filled with a first portion of polymer-coated PETN, and likewise themain load section 46 is filled with a second portion of polymer coated REIN. The polymer for the PETN is based on low-density polyethylene. Alternatively, polyethylene coated RDX (Royal Demolition eXplosive) can be used as booster and main load explosive. The shaped charge does not have to be loaded during manufacture in two distinct steps, i.e., in two geometrical sections using two explosive loadings that are in fact the same material. In production, this charge can be loaded in one step using one total amount of explosive (booster and main load added together). The entire explosive filling consolidates into the charge during a single pressing step. - The
shaped charge 40 also includes aconical liner 48 surrounding and encapsulating the explosives. Thecasing 42 can be made of at least one of steel, zinc, aluminum, copper, brass, ceramics and glass. Theconical liner 48 can be made of a mixture of metals such as copper and lead. Other metals may be included or substituted such as brass, bismuth, tin, zinc, silver, antimony, cobalt, nickel, tungsten, uranium or other malleable, ductile metals in proportions and formulations known to the aq. Other materials can also be included in the mixture, such as certain plastics, polymers, and graphite. Fabrication methodologies for the liner include wrought, machined, and powdered-metal techniques. Theconical liner 48 of a typical shaped charge is internally open. When the explosives are detonated, theliner 48 collapses into the internal space and forms a jet emanating from thecasing 42 as a very high velocity stream of metal. - Referring to
FIG. 3 , illustrated is another shaped charge for formation perforation in a wellbore, denoted generally as 60. The shaped charge (30 includes similar features to that ofFIG. 2 , the exception being the hollowed out section. Theshaped charge 60 includes acasing 62 with a hollowed out section and, in this particular embodiment, the hollowed out section is generally parabolic or even hemispherical in shape. The parabolic or hemisphere sec ion can include a boosterexplosive section 64 in ballistic communication with a detonating cord located inside theperforation gun 18. The boosterexplosive section 64 is filled with a first portion of polymer-coated PETN, and likewise themain load section 66 is filled with a second portion of polymer coated PETN. The polymer for the PETN is based on low-density polyethylene. Theshaped charge 60 also includes a generally parabolic orhemispherical liner 68 surrounding and encapsulating the explosives. The easing 62 can be made of at least one of steel, zinc, aluminum, copper, brass, ceramics and glass. The generally parabolic orhemispherical liner 68 can be made of a mixture of metals such as copper and lead. Other metals may be included or substituted such as brass, bismuth, tin, zinc, silver, antimony, cobalt, nickel, tungsten, uranium or other malleable, ductile metals in proportions and formulations known to the art. Other materials can also be included in the mixture, such as certain plastics, polymers, and graphite. Fabrication methodologies for the liner include wrought, machined, and powdered-metal techniques. The generally parabolic orhemispherical liner 68 of atypical shaped charge is internally open. When the explosives are detonated, theliner 68 collapses into the internal space and causes it to be ejected from thecasing 62. Depending on the shape of the generally parabolic or hemispherical liner, the ejected material may be a high velocity stream of metal or explosively-formed projectile. - The above-disclosed embodiments have been presented for purposes of illustration and to enable one of ordinary skill in the art to practice the disclosure, but the disclosure is not intended to be exhaustive or limited to the forms disclosed. Many insubstantial modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the disclosure. The scope of the claims is intended to broadly cover the disclosed embodiments and any such modification. Further, the following clauses represent additional embodiments of the disclosure and should be considered within the scope of the disclosure:
- Clause 1, a shaped charge for perforating a formation surrounding a wellbore, the shaped charge device comprising: a casing having a section loaded with polymer-coated explosives; and a liner encapsulating the section with the polymer coated explosives;
- Clause 2, the shaped charge of clause 1, wherein the casing is made of at least one of steel, zinc, copper, brass, aluminum, ceramics, and glass;
- Clause 3, the shaped charge of clause 1, wherein the liner is made of at least one of copper, lead, brass, bismuth, tin, zinc, silver, antimony, cobalt, nickel, tungsten, uranium and other malleable, ductile metals;
- Clause 4, the shaped charge of clause 1, wherein the liner is one of conical, parabolic, and hemispherical shape;
- Clause 5, the shaped charge of clause 1, wherein the explosives are a booster explosive and a main load explosive;
- Clause 6, the shaped charge of clause 5, wherein the booster explosive and the main load explosive are PETN;
- Clause 7, the shaped charge of clause 1, wherein the polymer is a low-density polyethylene;
- Clause 8, the shaped charge of clause 1, wherein the section filled with the polymer coated explosive includes a first section with a first polymer-coated explosive and a second section with a second polymer-coated explosive.
- Clause 9, the shaped charge of clause 8, wherein the first section and the second section are common, and include a first and second polymer-coated explosive that are common.
-
Clause 10, a method of using shaped charges for perforating a formation surrounding a wellbore, the method comprising: placing shaped charge devices on a well casing; setting the well casing in the wellbore using a downhole running tool; and detonating the shaped charge devices; wherein the shaped charge devices comprise: a casing having a section with polymer-coated explosives; and a liner encapsulating the section with the polymer coated explosives; - Clause 11, the method of
clause 10, wherein the casing is made of at least one of steel, zinc, copper, brass, aluminum, ceramics, and glass; -
Clause 12, the method ofclause 10, wherein the liner is made of at least one of copper, lead, brass, bismuth, tin, zinc, silver, antimony, cobalt, nickel, tungsten, uranium and other malleable, ductile metals; - Clause 13, the method of
clause 10, wherein the liner is one of conical, parabolic, and hemispherical shape; -
Clause 14, the method ofclause 10, wherein the explosives are a booster explosive and a main load explosive; - Clause 15, the method of
clause 14, wherein the booster explosive and the main load explosive are PETN; -
Clause 16, the method ofclause 10, wherein the polymer is a low-density polyethylene; - Clause 17, the method of
clause 10, wherein the section filled with the polymer coated explosive includes a first section having a first polymer-coated explosive and a second section having a second polymer-coated explosive; -
Clause 18, the method of clause 17, wherein the first section and the second section are common, and include a first and second polymer-coated explosive that are common; - Clause 19, a shaped charge for perforating a formation surrounding a wellbore, the shaped charge device comprising: a casing enclosing a polymer-coated booster explosive and a polymer-coated main load explosive and a liner encapsulating the polymer-coated explosives;
- Clause 20, the shaped charge of clause 19, wherein the explosive is PETN.
- The foregoing description of embodiments of the disclosure has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the disclosure. The embodiments were chosen and described in order to explain the principals of the disclosure and its practical application to enable one skilled in the art to utilize the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the embodiments without departing from the scope of the present disclosure.
- Such modifications and combinations of the illustrative embodiments as well as other embodiments will be apparent to persons skilled in the art upon reference to the description. It is, therefore, intended that the appended claims encompass any such modifications or embodiments.
Claims (20)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2019/013839 WO2020149841A1 (en) | 2019-01-16 | 2019-01-16 | Shaped charge utilzing polymer coated petn |
Publications (1)
Publication Number | Publication Date |
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US20220074288A1 true US20220074288A1 (en) | 2022-03-10 |
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US17/419,223 Pending US20220074288A1 (en) | 2019-01-16 | 2019-01-16 | Shaped charge utilizing polymer coated petn |
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US (1) | US20220074288A1 (en) |
AR (1) | AR117338A1 (en) |
WO (1) | WO2020149841A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220397376A1 (en) * | 2021-06-09 | 2022-12-15 | Damorphe | Shaped charge liners with integrated tracers |
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US20040050466A1 (en) * | 2002-09-13 | 2004-03-18 | Philip Kneisl | Hi-temp explosive binder |
US20150252669A1 (en) * | 2014-03-06 | 2015-09-10 | Shell Oil Company | Method and apparatus for reservoir testing and monitoring |
US20160137566A1 (en) * | 2013-06-18 | 2016-05-19 | Eurenco Bofors Ab | Phlegmatisation of an explosive in an aqueous suspension |
US20200208485A1 (en) * | 2018-12-27 | 2020-07-02 | Halliburton Energy Services, Inc. | Insensitive high explosive based tubing cutter |
US20200216369A1 (en) * | 2019-01-04 | 2020-07-09 | Dyno Nobel Asia Pacific Pty Limited | Explosive compositions with reduced fume |
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GB0323717D0 (en) * | 2003-10-10 | 2003-11-12 | Qinetiq Ltd | Improvements in and relating to oil well perforators |
US20050115448A1 (en) * | 2003-10-22 | 2005-06-02 | Owen Oil Tools Lp | Apparatus and method for penetrating oilbearing sandy formations, reducing skin damage and reducing hydrocarbon viscosity |
US20130061771A1 (en) * | 2011-09-13 | 2013-03-14 | Baker Hughes Incorporated | Active waveshaper for deep penetrating oil-field charges |
US10253603B2 (en) * | 2013-02-05 | 2019-04-09 | Halliburton Energy Services, Inc. | Methods of controlling the dynamic pressure created during detonation of a shaped charge using a substance |
US10480295B2 (en) * | 2013-05-30 | 2019-11-19 | Halliburton Energy Services, Inc. | Jet perforating device for creating a wide diameter perforation |
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2019
- 2019-01-16 WO PCT/US2019/013839 patent/WO2020149841A1/en active Application Filing
- 2019-01-16 US US17/419,223 patent/US20220074288A1/en active Pending
- 2019-12-16 AR ARP190103685A patent/AR117338A1/en unknown
Patent Citations (6)
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US5902954A (en) * | 1998-08-17 | 1999-05-11 | Western Atlas International, Inc. | Shaped charge and method of making |
US20040050466A1 (en) * | 2002-09-13 | 2004-03-18 | Philip Kneisl | Hi-temp explosive binder |
US20160137566A1 (en) * | 2013-06-18 | 2016-05-19 | Eurenco Bofors Ab | Phlegmatisation of an explosive in an aqueous suspension |
US20150252669A1 (en) * | 2014-03-06 | 2015-09-10 | Shell Oil Company | Method and apparatus for reservoir testing and monitoring |
US20200208485A1 (en) * | 2018-12-27 | 2020-07-02 | Halliburton Energy Services, Inc. | Insensitive high explosive based tubing cutter |
US20200216369A1 (en) * | 2019-01-04 | 2020-07-09 | Dyno Nobel Asia Pacific Pty Limited | Explosive compositions with reduced fume |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20220397376A1 (en) * | 2021-06-09 | 2022-12-15 | Damorphe | Shaped charge liners with integrated tracers |
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WO2020149841A1 (en) | 2020-07-23 |
AR117338A1 (en) | 2021-07-28 |
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