EP1345003A2 - Hohlladungseinlage mit Vorlaufeinlage - Google Patents

Hohlladungseinlage mit Vorlaufeinlage Download PDF

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Publication number
EP1345003A2
EP1345003A2 EP03251375A EP03251375A EP1345003A2 EP 1345003 A2 EP1345003 A2 EP 1345003A2 EP 03251375 A EP03251375 A EP 03251375A EP 03251375 A EP03251375 A EP 03251375A EP 1345003 A2 EP1345003 A2 EP 1345003A2
Authority
EP
European Patent Office
Prior art keywords
liner
component
apex
precursor
primary
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.)
Withdrawn
Application number
EP03251375A
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English (en)
French (fr)
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EP1345003A3 (de
Inventor
Darren R. Barlow
Corbin S. Glenn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Halliburton Energy Services Inc
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Halliburton Energy Services Inc
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Filing date
Publication date
Application filed by Halliburton Energy Services Inc filed Critical Halliburton Energy Services Inc
Publication of EP1345003A2 publication Critical patent/EP1345003A2/de
Publication of EP1345003A3 publication Critical patent/EP1345003A3/de
Withdrawn legal-status Critical Current

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    • 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

  • shaped-charges utilized as well perforating charges include a generally cylindrical or cup-shaped housing having an open end and within which is mounted a shaped explosive which is configured generally as a hollow cone having its concave side facing the open end of the housing.
  • the concave surface of the explosive is lined with a thin metal liner which, as is well-known in the art, is explosively driven to hydrodynamically form a jet of material with fluid-like properties upon detonation of the explosive and this jet of viscous material exhibits a good penetrating power to pierce the well pipe, its concrete liner and the surrounding earth formation.
  • the shaped-charges are configured so that the liners along the concave surfaces thereof define simple conical liners with a small radius apex at a radius angle of from about 55 degrees to about 60 degrees.
  • Other charges have a hemispherical apex fitted with a liner of uniform thickness.
  • explosive materials such as HMX, RDX, PYX, or HNS are coated or blended with binders such as wax or synthetic polymeric reactive binders such as that sold under the trademark KEL-F.
  • binders such as wax or synthetic polymeric reactive binders such as that sold under the trademark KEL-F.
  • the resultant mixture is cold- or hot-pressed to approximately 90% of its theoretical maximum density directly into the shaped-charge case.
  • the resulting shaped-charges are initiated by means of a booster or priming charge positioned at or near the apex of the shaped-charge and located so that a detonating fuse, detonating cord or electrical detonator may be positioned in close proximity to the priming charge.
  • the first material and the second material include different materials.
  • the first material has a greater density than the second material.
  • the second material has a greater sound speed than the first material.
  • the first material comprises a metal and most commonly the first material is selected from the group of copper, copper alloy, aluminum, aluminum alloy, tin, tin alloy, lead, lead alloy, powdered metal, powdered metal within a polymeric base, and sintered metal.
  • the second material is may be made from a similar set of materials or compacted or hardened explosive, but more preferably comprises aluminum or copper alloy or powdered metal in a polymeric base.
  • the first material comprises copper alloy and the second material comprises aluminum.
  • each of the first and second components has a liner angle.
  • the second component has a liner angle which is no more than about 15 degrees greater than the liner angle of the first component.
  • the second component has a liner angle within about 15 degrees of the liner angle of the first component.
  • the liner angle of the second component is less than the liner angle of the first component.
  • the liner height for the second component is between about 1/3 and 2/3 of the liner height for the first component.
  • the liner height for the second component is less than about 1 ⁇ 2 of the liner height for the first component.
  • the circular skirt edges of first and second components each have a diameter.
  • the circular skirt edge of the second component has a diameter of between about 0.30 inches (7.6mm) and about 0.45 inches (11.4mm). It is also preferred that the ratio of the diameter of the circular skirt edge of the second component to the diameter of the circular skirt edge of the first component is between about 0.05 and about 0.35 and more preferably between about 0.10 and about 0.25.
  • the more preferred shape for the second component is an approximately conical shape.
  • the more preferred approximate shapes for the first component are selected from the group consisting of hemispherical, parabolic, ellipsoidal, flattened parabolic, and hyperbolic. For both it is highly preferred that each component be radially symmetric about the central axis passing through the apex.
  • the present disclosure also addresses a method for making a shaped-charge.
  • the preferred method starts by forming a first liner component of a first material wherein the first liner component has an apex and an opening at the center of the apex.
  • a second liner component is formed of a second material wherein the second material is not identical to the first material.
  • a housing is provided which contains explosive material. The first component and the second component are assembled into the housing acting together to line the explosive material. The components are assembled so that a portion of the second component is within the opening at the center of the apex of the first component.
  • the action of forming the liner components may comprise drawing or molding the liner components among a number of possible forming methods - thus, it is possible for each liner component to be either drawn or molded.
  • the two liner components are joined, although they may be joined before, during, or even after assembly into the housing.
  • the action of joining may include fitting a portion of the second component within the opening in the apex of the first component. This may involve pressing the second component into the opening of the apex of the first component until an interference fit is attained between the two components.
  • the second component could have a lip around its mouth, in which case the action of fitting would include inserting the second component into the opening of the apex of the first component until the lip of the second component catches the edge of the opening of the first component.
  • the first component could also have a recess around the opening and the lip of the second component could fit into the recess around the opening in the apex of the first component.
  • the two components may be attached at the intersection of the opening of the apex and the portion of the second component. Attaching could be accomplished by applying an adhesive coating, by soldering, by welding, or by other methods disclosed herein. These forms of attachment could be accomplished alone or in combination with each other and could occur before, during, or after assembly into the shaped-charge.
  • the precursor liner is pressed into the booster end (or apex end) of the primary liner to form an initial very fast moving jet to open a path through the fluid of the well bore annulus.
  • the jet from the primary liner moves at a slower rate of speed and thus follows the path made through the fluid by the precursor resulting in reduced effects from the well bore fluid.
  • a number of potential approaches may be used to join the two liner components at the apex opening.
  • One preferred method involves the use of an interference fit between the mouth of the precursor liner and the walls of the opening in the primary liner.
  • Another method could involve the addition of a lip to the mouth of the precursor liner such that the lip is too large to pass through the apex opening in the primary liner, while the rest of the precursor liner is able to pass through.
  • the precursor liner could also sit atop the primary liner. This could be done by forming a recess in the top of the convex outer portion of the main liner and setting the precursor liner in the recess.
  • the precursor liner may not be pressed all the way onto the primary liner, leaving a portion of the precursor liner extending above the opening in the primary liner.
  • One approach to this alternative would be to have an interference fit where the mouth of the precursor liner is somewhat larger than the opening in the apex of the primary liner such that as the precursor liner is pressed in the two are interference fit at a circumference of the precursor liner below the mouth of the precursor liner.
  • the precursor liner could be inserted to the desired point and one of the other attachment methods described above or below could be used to join the two components together into the overall liner.
  • the most preferred approach is to have a close fit (without being an interference fit) and applying an adhesive coating to keep the two components of the overall liner (individually the primary liner and the precursor liner) together.
  • the coating is most preferably an adhesive/paint sold under the trademark Glyptol, preferably an adhesive selected from an epoxy material compatible with the explosive material, and generally comprises an adhesive.
  • the coating may be a single layer either of adhesive alone or adhesive in combination with graphite.
  • the coating may also be more than one layer, with a layer as described above and additional layers contributing to other properties, such as improving the moisture barrier characteristics, or improving the slight amount of time the coating acts as to dynamically confine the explosive gases which are the product of detonation.
  • the coating as a whole is preferably no more than twice the thickness of the liner around the opening in the apex, more preferably less than or about the thickness of the liner around the opening of the apex, and most preferably between about 5-10% of the thickness of the liner around the opening of the apex. This tends to place the thickness of the coating within the range of about 0.002 inches (0.05mm) to about 0.05 inches (1.3mm).
  • the coating may also be employed even when other methods should maintain relative position (such as the use of a lip or interference fit or other methods understood by those of skill in the art). In this case the adhesive properties of the coating may provide additional assistance, and the coating may also help to improve the seal between the liners, preventing potential salting out of explosive material through the component interface (the interface between the primary liner component and the precursor liner component).
  • the primary liner component is preferably made from a metal strip or sheet, more preferably from a metal selected from the group of copper, copper alloy, aluminum, aluminum alloy, tin, tin alloy, lead, and lead alloy, and most preferably made of copper alloy.
  • the liner may be made from a powdered metal within a polymeric base which is molded (for example injection molded) into the form of a liner.
  • the liner could also be made from a sintered metal, possibly with other material components, which is cast or molded into a desired shape. These alternative processes would typically be manufactured using a molding or casting process.
  • the precursor liner component may be made from similar materials and using similar processes. However, in the preferred embodiment, the precursor liner is made from a material which is less dense than the material used in the primary liner component. Alternatively, the precursor liner component may be made from a material with a greater sound speed, where the sound speed is the speed at which an acoustic shockwave travels through the liner material. In either event, these properties assist the precursor liner in traveling more quickly than the primary liner following the detonation of the charge. This helps to promote the travel of the jet formed by the precursor liner into the fluid preceding the jet formed by the primary liner. A preferred material for the precursor liner component is aluminum, but a lighter brass or even a CLG-80 powdered metal are preferred alternative materials.
  • liner component when the word material is used in the present disclosure it is intended to refer to blends and composites as well as more simple elemental materials. Basically, it represents the stuff out of which a liner component is formed.
  • the primary liner component will typically use an opening in the apex to locate and/or hold the precursor liner component.
  • a punch is used to punch the opening in the apex centered on the central axis. This preferably occurs in the same sequence as the drawing process to increase reliability of the central axis for the punch being identical to the central axis for the draw.
  • Other alternatives to the use of a punch to create the hole include drilling, honing, sawing, or chemically etching.
  • the liner components of the present invention may be manufactured by spinning a sheet of material into a concave shape radially symmetric about a central axis, having an apex centered on the central axis and a mouth at the opposite end from the apex, wherein a portion of the material forms the apex and a portion of the material forms a skirt portion terminating in a circular skirt edge at the mouth of the liner.
  • a removal of any excess material outside the circular skirt edge forming the mouth may be accomplished by the use of a punch or drill, after the completion of the spinning process.
  • Other methods of manufacture may also be contemplated by those of skill in the art as appropriate to the material of choice, such as sintering, casting, molding, compositing, and the like.
  • Figure 1 is a cross-sectional diagram illustrating one specific embodiment of the present invention.
  • Figure 1 is a cross-section of a shaped-charge 10 having a primary liner 50 with a flattened parabolic apex 54 and a precursor liner 70 with a conical apex 74.
  • the shaped-charge 10 includes a housing 12 having an outer wall 14, an inner wall 16, a base 18, and a mouth 20 opposite the base 18.
  • a shaped explosive 28 mounted on the inner wall 16 of the housing 12 and having an open concave side facing the mouth 20 (or mouth portion) of the housing.
  • the primary shaped-charge liner component 50 (also referred to as the primary liner) has a concave inner surface 51, a convex outer surface 52, an apex 54 (or apex portion), and a mouth opposite the apex 54 (illustrated here contiguous to mouth 20 of housing 12).
  • the apex 54 has a center at a point where the apex 54 intersects the central axis 53 about which the shaped-charge liner is radially symmetric.
  • the embodiment illustrated in Figure 1 further includes an opening 56 at the center of the apex 54.
  • the liner 50 also includes a skirt portion 60 terminating in a circular skirt edge 62 at the mouth of the liner on the opposite end of the liner from the apex 54.
  • the liner 50 lines the concave side of the shaped explosive 28 leaving an open space 30 between the concave inner surface 51 of the liner and the mouth 20 of the housing.
  • a "liner angle" may be defined for a liner component. If a section is taken on a plane through a liner or liner component which includes the central axis and intersects the apex of the liner and a straight line is drawn tangential to the skirt portion of the liner on each side. The lines should intersect at a point below the apex of the liner (or exactly at the apex of the liner in the case of a perfect cone) and define an angle between them. This angle represents the liner angle for the liner or liner component.
  • the liner angle for the precursor liner be less than the liner angle for the primary liner. Similar to the deep-penetrating advantages provided by conical liners over the more curvilinear big hole liners, it is believed that steeper liners (smaller liner angles) for the precursor liners will travel faster thus helping to promote the travel of the jet formed by the precursor liner into the fluid preceding the jet formed by the primary liner.
  • the liner height for the primary component is preferably within the range of 0.25 inches (6.4mm) to 3.0 inches (76mm), more preferably within the range of 0.5 inches (13mm) to 2.0 inches (51mm), and most preferably within the range of 0.75 inches (19mm) to 1.25 inches (32mm).
  • the liner height for the precursor component is preferably within the range of 0.125 inches (3.2mm) to 1.5 inches (38mm), more preferably within the range of 0.125 inches (3.2mm) to 0.5 inches (13mm), and most preferably within the range of 0.2 inches (5.1mm) to 0.4 inches (10.2mm).
  • the liner height for the precursor liner be less than 1 ⁇ 2 the liner height for the primary liner. It is more preferable that the liner height for the precursor liner be less than about 1/3 of the liner height for the primary liner, and most preferable that the liner height for the precursor liner be between 1/5 and 1/3 of the liner height for the primary liner.
  • the primary shaped-charge liner 150 has a concave inner surface 151, a convex outer surface 152, an apex 154 (or apex portion), and a mouth opposite the apex 154 (illustrated here contiguous to mouth 120 of housing 112).
  • the apex 154 has a center at a point where the apex 154 intersects the central axis 153 about which the shaped-charge liner is radially symmetric.
  • the embodiment illustrated in Figure 2 further includes an opening 156 at the center of the apex 154.
  • the liner 150 also includes a skirt portion 160 terminating in a circular skirt edge 162 at the mouth of the liner on the opposite end of the liner from the apex 154.
  • the liner 150 lines the concave side of the shaped explosive 128 leaving an open space 130 between the concave inner surface 151 of the liner and the mouth 120 of the housing.
  • the precursor shaped-charge liner 170 has a concave inner surface 171, a convex outer surface 172, an apex 174 (or apex portion), and a mouth opposite the apex 174 (illustrated here contiguous to opening 156 of primary liner 150).
  • the apex 174 has a center at a point where the apex 174 intersects the central axis 153 about which both the primary liner 150 and the precursor liner 170 are radially symmetric.
  • the precursor liner 170 also includes a skirt portion 180 terminating in a circular skirt edge 182 at the mouth of the liner on the opposite end of the liner from the apex 174.
  • the combined liner components 150 and 170 line the concave side of the shaped explosive 128 leaving an open space 130 between the concave inner surface 151 of the primary liner and the mouth 120 of the housing.
  • the liner angle for the primary component is preferably within the range of 10 degrees to 150 degrees, more preferably within the range of 35 degrees to 65 degrees, and most preferably within the range of 42 degrees to 47 degrees.
  • the liner angle for the precursor component is preferably within the range of 10 degrees to 150 degrees, more preferably within the range of 20 degrees to 90 degrees, and most preferably within the range of 20 degrees to 50 degrees.
  • the liner height for the primary component is preferably within the range of 0.25 inches (6.4mm) to 3.0 inches (76mm), more preferably within the range of 0.5 inches (13mm) to 2.0 inches (51mm), and most preferably within the range of 1.0 inches (25.4mm) to 1.35 inches (34mm).
  • the liner height for the precursor component is preferably within the range of 0.125 inches (3.2mm) to 1.5 inches (38mm), more preferably within the range of 0.125 inches (3.2mm) to 0.5 inches (13mm), and most preferably within the range of 0.2 inches (5.1mm) to 0.4 inches (10.2mm).
  • the liner height for the precursor liner be less than 2/3 the liner height for the primary liner. It is more preferable that the liner height for the precursor liner be less than 1/2 of the liner height for the primary liner, and most preferable that the liner height for the precursor liner be between 1/4 and 1/2 of the liner height for the primary liner.
  • the precursor liner illustrated is approximately a simple cone where the mouth of the precursor liner is contiguous to the opening in the apex of the primary liner.
  • the various methods of coupling the two liner components at or about the opening in the primary liner are addressed above and equally apply for this embodiment.
  • the opening at the center of the apex of the primary liner has a diameter of about 0.375 inches (9.5mm) and the circular skirt edge has a diameter of about 1.9 inches (48mm).
  • the ratio of the diameter of the opening to the diameter of the circular skirt edge is about 0.2.
  • the ratio of the diameter of the opening to the diameter of the circular skirt edge is between about 0.05 and about 0.35 and more preferably the ratio of the diameter of the opening to the diameter of the circular skirt edge is between about 0.10 and about 0.25.
  • the opening at the center of the apex preferably has a diameter of between about 0.30 inches (7.6mm) and about 0.45 inches (11.4mm). In the preferred embodiment, this ratio equally applies to the ratio of the diameter of the circular skirt edge of the mouth of the precursor liner to the circular skirt edge of the mouth of the primary liner.
  • the opening at the center of the apex of the primary liner has a diameter of about 0.36 inches (9.1mm) and the circular skirt edge has a diameter of about 2.45 inches (62mm).
  • the ratio of the diameter of the opening to the diameter of the circular skirt edge is about 0.15.
  • the ratio of the diameter of the circular skirt edge of the mouth of the precursor liner to the circular skirt edge of the mouth of the primary liner is about 0.15.
  • the size of the opening in the apex also approximates the size of the mouth of the precursor liner and thus the ratio of the mouth of the primary liner to the apex opening of the primary liner approximates the ratio of the mouth of the primary liner to the mouth of the precursor liner.
  • the hemi-cone primary liner illustrated in Figure 4 allows a larger apex and tends to distribute more explosive material directly behind the apex section. Again, the embodiment illustrated in Figure 4 incorporates a simple cone for the precursor liner.
  • the liner angle for the primary component is preferably within the range of 10 degrees to 150 degrees, more preferably within the range of 35 degrees to 65 degrees, and most preferably within the range of 42 degrees to 47 degrees.
  • the liner angle for the precursor component is preferably within the range of 10 degrees to 150 degrees, more preferably within the range of 30 degrees to 100 degrees, and most preferably within the range of 40 degrees to 60 degrees.
  • the liner angle for the precursor liner be no more than 15 degrees more than the liner angle for the primary liner. It is more preferable that the liner angle for the precursor liner be between about 15 degrees less and about 15 degrees more than the liner angle for the primary liner (within about 15 degrees of the liner angle for the primary liner).
  • the liner height for the primary component is preferably within the range of 0.25 inches (6.4mm) to 3.0 inches (76mm), more preferably within the range of 0.5 inches (13mm) to 2.0 inches (51mm), and most preferably within the range of 1.0 inches (25.4mm) to 1.35 inches (34mm).
  • the liner height for the precursor component is preferably within the range of 0.125 inches (3.2mm) to 1.5 inches (38mm), more preferably within the range of 0.25 inches (6.4mm) to 1.0 inches (25.4mm), and most preferably within the range of 0.6 inches (15mm) to 0.8 inches (20mm).
  • the liner height for the precursor liner be less than the liner height for the primary liner. It is more preferable that the liner height for the precursor liner be less than 2/3 of the liner height for the primary liner, and most preferable that the liner height for the precursor liner be between 1/3 and 2/3 of the liner height for the primary liner.
  • the opening at the center of the apex of the primary liner has a diameter of about 0.675 inches (17mm) and the circular skirt edge has a diameter of about 2.45 inches (62mm).
  • the ratio of the diameter of the opening to the diameter of the circular skirt edge is about 0.275.
  • the ratio of the diameter of the circular skirt edge of the mouth of the precursor liner to the circular skirt edge of the mouth of the primary liner is about 0.275.
  • the ratio of the diameter of the opening to the diameter of the circular skirt edge is between about 0.10 and about 0.45 and more preferably the ratio of the diameter of the opening to the diameter of the circular skirt edge is between about 0.20 and about 0.35.
  • the shape is approximate and may involve some degree of eccentricity, deviation, or transitioning, both as a matter of design and as a matter of manufacture.
  • the shape is intended to provide insight into the basic pattern being followed and is not intended to be a precise description of the physical outcome.
  • the liners are preferably radially symmetric about the central axis passing through the center of the apex. While the disclosure herein refers to concave and convex surfaces to describe the general orientation of the surface within the context of the object, the use of convex and concave are not intended to imply a requirement that the surface be smooth or curvilinear.
  • the liner angle for the primary component is preferably within the range of 10 degrees to 150 degrees, more preferably within the range of 25 degrees to 55 degrees, and most preferably within the range of 37 degrees to 43 degrees.
  • the liner angle for the precursor component is preferably within the range of 10 degrees to 150 degrees, more preferably within the range of 20 degrees to 75 degrees, and most preferably within the range of 35 degrees to 55 degrees.
  • the liner height for the primary component is preferably within the range of 0.25 inches (6.4mm) to 3.0 inches (76mm), more preferably within the range of 0.75 inches (19mm) to 2.0 inches (51mm), and most preferably within the range of 1.20 inches (30mm) to 1.50 inches (38mm).
  • the liner height for the precursor component is preferably within the range of 0.125 inches ((3.2mm) to 1.5 inches (38mm), more preferably within the range of 0.125 inches (3.2mm) to 0.5 inches (13mm), and most preferably within the range of 0.2 inches (5.1mm) to 0.4 inches (10.2mm).
  • the liner height for the precursor liner be less than 1 ⁇ 2 the liner height for the primary liner. It is more preferable that the liner height for the precursor liner be less than about 1/3 of the liner height for the primary liner, and most preferable that the liner height for the precursor liner be between 1/5 and 1/3 of the liner height for the primary liner.
  • the opening at the center of the apex of the primary liner has a diameter of about 0.375 inches (9.5mm) and the circular skirt edge has a diameter of about 2.50 inches (64mm).
  • the ratio of the diameter of the opening to the diameter of the circular skirt edge is about 0.15.
  • the ratio of the diameter of the circular skirt edge of the mouth of the precursor liner to the circular skirt edge of the mouth of the primary liner is about 0.15.
  • the ratio of the diameter of the opening to the diameter of the circular skirt edge is between about 0.05 and about 0.35 and more preferably the ratio of the diameter of the opening to the diameter of the circular skirt edge is between about 0.10 and about 0.25.
  • precursor liners shown in the examples have been simple cones, more complex shapes could be employed as described above or as illustrated in Figure 7.
  • a simple button or disk could be employed for the precursor liner, however, such an instance makes particularly favorable the choice of a material for such liner which is less dense or has a greater sound speed than the material making up the primary liner.
  • shaped-charge i.e. one without a cover.
  • This type of shaped-charge is typically used within a perforating gun or tubing, which provides protection from direct exposure to the downhole pressure and environment.
  • Alternative shaped-charges have covers that cooperate with the housing to protect each individual charge from direct exposure to the downhole environment. While not specifically addressed here, the benefits of the present invention would equally apply to such covered charges, as would be recognized by one of skill in the art.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP03251375A 2002-03-12 2003-03-06 Hohlladungseinlage mit Vorlaufeinlage Withdrawn EP1345003A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US96609 1979-11-21
US10/096,609 US20030183113A1 (en) 2002-03-12 2002-03-12 Shaped-charge liner with precursor liner

Publications (2)

Publication Number Publication Date
EP1345003A2 true EP1345003A2 (de) 2003-09-17
EP1345003A3 EP1345003A3 (de) 2004-05-12

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US (1) US20030183113A1 (de)
EP (1) EP1345003A3 (de)
CA (1) CA2421671A1 (de)

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EP2045567A1 (de) * 2007-10-02 2009-04-08 Evgeny Pavlovich Germanov Kumulative Ladung
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RU2534661C1 (ru) * 2013-06-18 2014-12-10 Николай Александрович Волдаев Кумулятивный заряд
CN104457433A (zh) * 2014-10-24 2015-03-25 中国船舶重工集团公司第七〇五研究所 一种组合药型罩
DE202015102874U1 (de) 2015-06-03 2015-07-31 Nikolaj A. Voldaev Hohlladung
US11340047B2 (en) 2017-09-14 2022-05-24 DynaEnergetics Europe GmbH Shaped charge liner, shaped charge for high temperature wellbore operations and method of perforating a wellbore using same
US11378363B2 (en) * 2018-06-11 2022-07-05 DynaEnergetics Europe GmbH Contoured liner for a rectangular slotted shaped charge
US11499401B2 (en) 2021-02-04 2022-11-15 DynaEnergetics Europe GmbH Perforating gun assembly with performance optimized shaped charge load
USD981345S1 (en) 2020-11-12 2023-03-21 DynaEnergetics Europe GmbH Shaped charge casing
US11753909B2 (en) 2018-04-06 2023-09-12 DynaEnergetics Europe GmbH Perforating gun system and method of use
US11795791B2 (en) 2021-02-04 2023-10-24 DynaEnergetics Europe GmbH Perforating gun assembly with performance optimized shaped charge load

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US6840178B2 (en) * 2003-02-21 2005-01-11 Titan Specialties, Ltd. Shaped charge liner
US7044225B2 (en) * 2003-09-16 2006-05-16 Joseph Haney Shaped charge
US7762193B2 (en) * 2005-11-14 2010-07-27 Schlumberger Technology Corporation Perforating charge for use in a well
DE102007051345A1 (de) * 2007-10-26 2009-04-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Explosivstoffladung
JP2010169318A (ja) * 2009-01-23 2010-08-05 Ihi Aerospace Co Ltd 成形炸薬弾頭とこれを用いたタンデム弾頭
GB2503186B (en) * 2009-11-25 2015-03-25 Secr Defence Shaped charge casing
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