WO2017029240A1 - Initiation à points multiples pour charge de forme non-axisymétrique - Google Patents

Initiation à points multiples pour charge de forme non-axisymétrique Download PDF

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Publication number
WO2017029240A1
WO2017029240A1 PCT/EP2016/069293 EP2016069293W WO2017029240A1 WO 2017029240 A1 WO2017029240 A1 WO 2017029240A1 EP 2016069293 W EP2016069293 W EP 2016069293W WO 2017029240 A1 WO2017029240 A1 WO 2017029240A1
Authority
WO
WIPO (PCT)
Prior art keywords
axisymmetric
shaped charge
axisymmetric shaped
casing
shaped
Prior art date
Application number
PCT/EP2016/069293
Other languages
English (en)
Inventor
Liam Mcnelis
Arash Shahinpour
Jörg Müller
Original Assignee
Dynaenergetics Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dynaenergetics Gmbh & Co. Kg filed Critical Dynaenergetics Gmbh & Co. Kg
Priority to US15/743,718 priority Critical patent/US20180202779A1/en
Priority to EP16756650.4A priority patent/EP3338049A1/fr
Priority to CA2995139A priority patent/CA2995139C/fr
Publication of WO2017029240A1 publication Critical patent/WO2017029240A1/fr

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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11—Perforators; Permeators
    • E21B43/116—Gun or shaped-charge perforators
    • E21B43/117—Shaped-charge perforators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/036—Manufacturing processes therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/08—Blasting cartridges, i.e. case and explosive with cavities in the charge, e.g. hollow-charge blasting cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/26—Arrangements for mounting initiators; Accessories therefor, e.g. tools

Definitions

  • a non-axisymmetric shaped charge for use in a perforating gun is generally described, wherein the non-axisymmetric shaped charge has multiple initiation points and a plurality of guiding members.
  • Perforating gun assemblies are used in many oilfield or gas well completions.
  • the assemblies are used to generate holes in steel casing pipe/tubing and/or cement lining a well to gain access to the oil and/or gas deposit formation.
  • These assemblies are usually cylindrical and include a detonating cord arranged within the interior of the assembly and connected to shaped charge perforators (or shaped charges) disposed therein.
  • shaped charges are configured to focus ballistic energy onto a target to initiate production flow. Shaped charge design selection is also used to predict/simulate the flow of the oil and/or gas formation.
  • Shaped charges include conical or round shaped charges having a single point of initiation through a metal casing, which contains an explosive charge material, with or without a liner therein, that produces a perforating jet upon initiation.
  • These shaped charges focus the entire ballistic energy onto a single point on the target, thereby producing a round perforation hole in the steel casing pipe or tubing and/or the formation.
  • the ballistic energy creates a detonation wave that collapses the liner, thereby forming a forward-moving high velocity jet that travels through an open end of the casing housing the explosive charge.
  • the jet pierces the perforating gun casing and/or the cement liner and forms a cylindrical tunnel in the surrounding target formation. Because round perforation holes have to be of a sufficient diameter in order to avoid bridging and screen out, holes of insufficient diameters leads to decreased flow which can cause production flow to be halted, which is costly.
  • Such conical ly-shaped charges are commercially available, and an example thereof is shown in FIG. 1.
  • the shaped charge 10' has an axisymmetric conical-shaped casing 20' having a back wall portion 25', a side wall portion 23', and an open front portion 22' forming a cavity or hol low interior 2 1 ' , and a liner 30' disposed within the casing 20 " .
  • An explosive load 50' is contained by the liner 30 " , the explosive load 50 " being adjacent to and conforming to the interior
  • the external surface 62' of the casing 20' includes guiding members 60' shaped as prongs and having a depression therein to guide/retain a detonating cord (not shown) towards an initiation point. While such conical ly-shaped charges typically incorporate a single initiation point, there have been solutions proposed in which the initiation point provides branches within the casing to more evenly distribute the initiation. As used herein, "axisymmetric " means that the shaped charge is
  • y-y symmetrical around the central a
  • a distance between any point around the periphery is equidistant from the y-axis.
  • the distance L I from the central axis y-y to one side of the liner 2 1 " is equal to a distance L2 to another position on the liner 2 1 ' , taken in the same x-direction plane.
  • Another objective of certain shaped charges is to assist in abandoning wells and/or oilfields.
  • Well abandonment typically involves complicated procedures where the well bore must be shut in and permanently sealed using cement. It is essential that the layers of sedimentary rock, in particular freshwater aquifers, are pressure isolated. Unwanted vertical channels or voids in a previously cemented wel lbore annul us may exist. These channels can produce migration pathways for fluids or gas.
  • an objective behind perforating with, for instance, a slot-shaped charge may not be to produce a circular hole in the casing or tubing pipe, but rather to produce a type of longitudinal slot or linear shaped slit or hole on the target pipe, particularly useful in performing the above-mentioned closing procedures.
  • slot-shaped charges may also have a v-shaped cross-section, ( linear, convex or concave), with the v- shape extending along a length of the charge. Since commercially available slot-shaped charges provide a side face or back end single initiation point, in addition to the aforementioned
  • the non-axisymmetric shaped charge typically provided for use in a perforating gun, is generally described, wherein the non-axisymmetric shaped charge has multiple initiation points.
  • the non-axisymmetric shaped charge generally includes a casing, such as a non-axisymmetric shaped casing, and the liner housed therein.
  • the casing includes mul tiple in itiation points extending in a planar arrangement along an external surface of the casing and optional ly a plurality of guiding members positioned on the external surface.
  • FIG. 1 is a cut-away perspective view of a shaped charge according to the prior art
  • FIG. 2 is a is a cut-away perspective view of a shaped charge according to an
  • FIG. 3 cross-sectional, elevation view of a non-axisymmetric shaped charge, according to an embodiment
  • FIG. 4A is a cross-sectional, elevation view of the non-axisymmetric shaped charge of
  • FIG. 3 illustrating the alignment of the detonating cord according to an embodiment
  • F IG. 4B is a cross-sectional, elevation view o the non -ax i sym m etri c shaped charge of
  • FIG. 3 illustrating divots in the back wall according to an embodiment
  • FIG. 5 is a bottom view of a non-axisymmetric shaped charge, il lustrating guiding members and initiation points, according to an embodiment
  • FIG. 6 is a perspective view of a perforating gun including a pl ural ity of non- ax isymmetric shaped charges positioned within a shaped charge carrier tube, according to an embodiment;
  • FIG. 7 is a perspective view of a perforating gun with its shaped charge carrier tube removed, according to an embodiment;
  • FIG. 8 is a perspective view of a shaped charge carrier tube including a pair of shaped charges, according to an embodiment
  • FIG. 9 is a top view of the shaped charge carrier tube of FIG. 8, according to an embodiment
  • FIG. 10 is a top view of a shaped charge carrier tube depicting an inwardly facing shaped charge, according to an embodiment
  • FIG. 1 1 is a flow chart depicting a method, according to an embodiment.
  • non-axisymmctric means not axisymmetric as defined hereinabove, and includes non-circular and non-conical shapes.
  • the distance between a point on the periphery of the body from the central axis y-y found at 1.3 is not equal to the distance found at 1.4.
  • the term “multiple” means more than one.
  • a non-axisymmctric shaped charge is generally described herein, hav ing particular use in conjunction with a perforating gun assembly.
  • the non-axisymmetric shaped charge is configured for use with a perforating gun assembly, in particular for oilfield or gas well drilling or completions.
  • the n o n - a x i s y m m e t r i c shaped charge provides multiple initiation points extending in a planar arrangement along an external surface of the non-axisymmetric shaped charge, which allows a liner to collapse more uniformly, thereby creating a substantially uniform and/or cleaner and/or deeper slot-shaped openings/perforations in a borewell casing and formation.
  • a no n-ax i s ym m ctric shaped charge 1 0 is provided.
  • the non-axisymmetric shaped charge 10 is a slot shaped charge.
  • the non-axisymmetric shaped charge 10 is illustrated having a casing 20 and a liner 30 housed within the casing 20. According to an aspect the casing 20 is a non-axisymmetric shaped casing 20.
  • the casing 20 is shown including a plurality of side walls 23 (two side walls 23 shown), a back wall 25, and an open front portion 22.
  • the casing 20 includes a hollow interior 21 bounded by the back wall 25 and side walls 23, within which the liner 30 is housed.
  • a positioning feature for alignment and placement of the shaped charge 10 within a carrier (as discussed in greater detail hcreinbelow), such as a positioning groove 26 formed in an outer surface of opposing side walls 23.
  • the front portion 22 is open and the back wall 25 is at least partially closed.
  • the liner 30 may be arranged within the hollow interior 21 in a manner configured to close the front portion 22.
  • the liner 30 is made of a material selected based on the target to be penetrated, and may be made of powdered metal and/or metal alloys held together by a percentage of binder materials.
  • the powdered metal and/or metal alloy forming the liner 30 may include at least one of copper, tin, tungsten, lead, nickel, bronze, molybdenum or combinations thereof.
  • the liner 30 is made of a formed solid metal sheet, rather than compressed powdered metal and/or metal alloys.
  • the liner 30 is made of a non-metal material, such as glass, cement, high-density composite or plastic.
  • an explosive load 50 may be disposed within the hollow interior 21.
  • the liner 30 may be positioned to enclose, encase or otherwise cover the explosive load 50 between the liner 30 and the back wall 25.
  • the explosive load 50 may be enclosed, encased or positioned between the liner 30 and the back wal l portion 25 in such a manner that it is secured within the casing 20.
  • the explosive load 50 is placed between a cavity formed by the side walls 23, the back wall 25 and the liner 30.
  • the side walls 23 and the back wall 25 may form a V-shaped cav ity or cross-section within which the explosive load 50 is positioned. (See, for instance, FIG.
  • the V- shaped cross-section extends along at least a portion of a length of the back wall portion 25, between two opposing side wall portions of the plurality of side walls 23.
  • the liner 30 may be pressed into and. or positioned on or over the explosive load. According to an embodiment, the liner 30 extends to the upper edge of the front portion 22 ( FIG. 3), while in an alternative embodiment, the liner 30 does not extend all the way to the upper edge of the front portion 22 (FIG.
  • FIGS. 6 and 7 il lustrate an embodiment in which the liner 30 is visible through the open front portion 22 of the non-axisymmetric casing 20. Since the liner 30 is not conical ly shaped as commonly found in a cylindrical shaped charge, care must be taken to properly place or seat the liner 30 within the casing 20 to substantially enclose the explosive load 50.
  • the back wall 25 of the casing 20 includes an internal surface 63 and an external surface 62.
  • the explosive load 0 is positioned in abutting contact with at least a portion of the internal surface 63.
  • Multiple initiation points 40 are provided in the back wall 25 of the casing 20.
  • the multiple initiation points 40 arc shaped like channels that begin at the internal surface 63 of the casing 20 and end at the external surface 62 of the casing 20.
  • the multiple initiation points 40 extend from the hollow interior 2 1 through the back wall 25 to the external surface 62 of the casing 20 and may be configured to receive and house some of the explosive load 50.
  • a plurality of guiding members 60 may be positioned on at least a portion of the external surface 62 and proximate to at least one of the multiple initiation points 40.
  • the plurality of guiding members 60 may be disposed such that at least one of the plurality of guiding members 60 is positioned along one side or to the left of at least one of the multiple initiation points 40, while at least one other of the plurality of guiding members 60 is positioned along an opposing side or to the right.
  • a guiding member 60 may be positioned on the right or left, re-positioning the non-axisymmetric casing 20 in a clockwise direction or a counter-clockwise direction could change the orientation such that the right is now the left, top. or bottom, and vice-versa.
  • the plurality of guiding members 60 may be provided to align a detonating cord 70 along the external surface 62 of the casing 20. As seen in this figure, the detonating cord 70 may be disposed between two of the plurality of guiding members 60.
  • the detonating cord 70 is depicted as flush with or adjacent to the initiation point 40, in some embodiments, the detonating cord 70 may be proximal to at least one of the multiple initiation points 40, but not in an abutting arrangement therewith. While FIG. 3 il lustrates a plurality of guiding members 60 being provided on at least a portion of the external surface 62, it is to be understood that in some embodiments, guiding members 60 are not provided at all. As such, the detonating cord 70 is positioned along the external surface 62 and proximal or adjacent or flush with initiation points 40, being compressive ly and/or mechanically held in place by the casing 20.
  • the non- axisymmetric shaped charge 1 0 may include two. three, four or more.
  • the multiple initiation points 40 extend radial ly from the hollow interior 2 1 . within which an amount of the explosive load 50 is housed, to the external surface 62 of the casing 20. Depicted as channels passageways, each of the multiple initiation points 40 may be completely fil led with an amount of explosive load 50, at a distance measured from the hollow interior 21 to the external surface 62 of the casing 20.
  • the explosive load 0 may not fi 11 each one of the multiple initiation points 40, but may completel y fi ll most, but not al l. of the multiple initiation points 40. In some embodiments, the explosive load may partial ly fill one of more of the multiple in itiation points 40.
  • the length of each channel/passageway of each of the multiple initiation points 40 is substantially identical . In some embodiments the length of each channel passagew ay of each of the multiple initiation points 40 varies.
  • Each of the multiple initiation points 40 has a width that may be
  • initiation points 40 depicted in FIGS. 4A-4B is three, it is to be understood that the number of initiation points 40 may be 2, 3, 4, or more.
  • the detonating cord 70 may be positioned adjacent to the external surface 62 of the casing 20.
  • the detonating cord is show n as being in abutting contact with the multiple initiation points 40.
  • the detonating cord 70 is adjacent to but not in abutting contact with the multiple initiation points 40.
  • the mul tiple initiation points 40 do not extend from the hollow interior 2 1 completel y through to the back wall 25 to the external surface 62 of the casing 20.
  • the back wall 25 includes divots 42, w hich form a part of the multiple initiation points 40.
  • the divots 42 may be formed in at least one of the external surface 62 and the internal surface 63 of the back wall 25.
  • the divots 42 are shown as being formed in both the external surface 62 and/or the internal surface 63 of the back wail 25, thereby creating a thinner section of the back wall 25.
  • the divots 42 aid in retaining the explosive load 50 within the hol low interior 2 1 and may form a weakening point in the back wall 25 by w ay of providing a thinner section thereof.
  • each of the plurality of guiding members 60 is positioned generally abov e and/or generally below at least one of the mul tiple initiat ion points 40.
  • the pl urality of guiding members 60 position and/or guide the detonating cord 70 along the external surface 62 of the casing 20.
  • the plurality of guiding members 60 are depicted as positioned in a substantial ly straight line on the external surface 62 of the casing 20, in some embodiments, at least some of the plurality of guiding members 60 are positioned offset from each other. (See, for example, the arrangement depicted and described in more detail with reference to FIG. 5.)
  • FIGS. 4A and 4B depict the explosive load 50 housed in the casing 20 as partial ly fil ling a section of the hollow interior 2 1 .
  • the filled section extending from the back wall 25 to a position on the side walls 23 before the front portion 22.
  • the amount of explosive load 50 selected may vary based on the size, shape and/or position of the liner housed in the hollow interior.
  • the amount of explosive load 50 housed within the hollow interior 2 1 may be selected based on a desired detonation force/wave.
  • the explosive load 50 may fil l the entire hollow interior 2 1 .
  • the explosive load 50 may fill about 25% to about 75% of the hollow interior 21.
  • FIG. 5 illustrates a view of the external surface 62 of the casing 20.
  • the multiple initiation points 40 may be oriented in a substantial ly linear configuration / fashion with respect to each other, such as along a vertical (Y) axis, along the external surface 62 of the casing 20.
  • the multiple initiation points 40 may extend between the external surface 2 and an internal surface 63 of the back wal l portion 65.
  • each of the multiple initiation points 40 may be positioned equidistantly from ad jacent initiation points 40.
  • the multiple initiation points 40 are not positioned equidistantly from each adjacent initiation point 40 and may be spaced apart from each other by varying distances.
  • each of the multiple initiation points 40 is show n hav ing a cross- sectional shape that is circular.
  • some initiation points 40 may hav e a c t oss-sectional shape that is one of a symmetrical, semi-symmetrical and asymmetrical shape.
  • a symmetrical cross-section shape may include a square or rectangular shape.
  • the cross-sectional shape of the multi le initiation points 40 may be of any cross-sectional shape, such as, rectangular, square or any other shape suitable for housing and/or communicating initiation of a detonating cord 70 and transmission of the thus-initiated shock to the explosive load 50.
  • each of the plurality of guiding members 60 is positioned at least somew hat proximal to at least one of the multiple initiation points 40. While the plurality of guiding members 60 are each show n in the shape of a rhomboid, it is to be understood that the plurality of guiding members 60 may be of any shape and size sufficient to guide/position and/or retain a detonating cord 70 across the external surface 62 of the back wal l 25 of the casing 20 and across the multiple initiation points 40.
  • the arrangement of the plurality of guiding members 60 is directed/arranged in a slanted direction in such a way that it facilitates and is capable of positioning the detonating cord 70 in a substantially helical pattern.
  • the plurality of guiding members 0 are spaced apart from each other, forming a gap 64 of sufficient size to receive and/or align the detonating cord 70 along the external surface 62 of the non-axisymmetric shaped casing 20.
  • each of the plurality of guiding members 60 may be oriented or aligned vertically and/or horizontally with an adjacent guiding member 60.
  • each of the plurality of guiding members 60 may be selected to guide the detonating cord 70 across over one or more of the mul tiple ini tiation points 40.
  • Whi le the plurality of guiding members 60 depicted in FIG. 5 is shown as four, it is to be understood that the number of guiding members 60 may be 2, 3, 4, or more, when used.
  • FIGS. 6-10 illustrate the non-axisymmetric shaped charges 10 positioned within various shaped charge carrier tubes 92, 92' .
  • the charges 1 0 may be secured and/or retained within the tubes 92, 92 ' by various means, such as for example, a retention clip, and groove and tongue connect ions.
  • FIG. 6 an il l ustrative example in which the non-axisymmetric shaped charges 1 0 are positioned within a shaped charge carrier tube 92 having retention clips, the shaped charges 10 partially extending from a perforating gun 90, is shown.
  • the perforating gun 90 includes the shaped charge carrier tube 92 disposed within a bore 96 of the perforating gun 90.
  • the perforating gun 90 further includes a plural ity of non-axisymmetric shaped charges 1 0. substantial ly as described herein and shown in the figures, disposed within the shaped charge carrier tube 92. While the perforating gun 90 is shown having three non-axisymmetric shaped charges 1 0. it is to be understood that the perforating gun 90 may include any number of non-axisymmetric shaped charges 1 0.
  • the plurality of non-axisymmetric shaped charges 10 may be positioned in the shaped charge carrier tube 92 in an outwardly facing helical arrangement as depicted.
  • the detonating cord 70 may be positioned behind the back wall 25 of the casing 20. When present, the plurality of guiding members 60 may be used to position and/or al ign the detonating cord 70.
  • FIG. 7 shows the shaped charge carrier tube 92 situated outside of the perforating gun 90, prior to insertion into the perforating gun 90.
  • the shaped charge carrier tube 92 includes several openings 95, each configured for receiving one of the shaped charges 1 0 positioned therein.
  • the plurality of non-axisymmetric shaped charges 1 0 are positioned in the shaped charge carrier tube 92 in an outwardly facing helical arrangement, and the casing 20 extends from one side of the carrier tube 92 to the opposite side.
  • the pl urality of non- axisymmctric shaped charges 10 is mounted in a helical fashion around the shaped charge carrier tube 92, and is coupled by a detonating cord 70.
  • the shaped charge carrier tube 92 " is depicted including a pair of the plurality of non-axisymmctric shaped charges 1 0
  • FIG. 9 shows the detonating cord 70 positioned within the shaped charge carrier tube 92', and the detonating cord 70 is shared by the pair of non-axisymmetric shaped charges 10.
  • the guiding members 60 create a space between the external surfaces of the abutting shaped charges, within which the detonating cord 70 is positioned.
  • the detonating cord 70 is arranged within a bore of the shaped charge carrier tube 92 " .
  • the detonating cord 70 is positioned between the abutting external surfaces 62 of each of the pairs of plurality of non-axisymmetric shaped charges 10.
  • the detonating cord 70 may further be positioned within the gap 64 disposed between any pair of the plural ity of guiding members 60 (see FIG. 5).
  • the detonating cord 70 is centrally located within the bore of the shaped charge carrier tube 92'.
  • the detonating cord 70 is arranged exteriorly to the shaped charge carrier tube 92 / 92' (not shown).
  • FIG. 10 depicts an embodiment in which one of the shaped charges 10 of a pair of the shaped charges is positioned within the carrier tube 92 ' in an inwardly facing arrangement, without positioning the other of the pair of shaped charges, and leav ing that opposing opening 95 blank.
  • the front portion 22 of the casing 20 extends towards the inside of the carrier tube 92', while the back wall portion 25 slightly extends ( in an embodiment ) from the opening 95.
  • the detonating cord 70 may be posit ioned external to the carrier tube 92 " , and upon detonation, the shaped charge 10 would fire through that opposite opening 95, shown directionaiiy by the broken arrows.
  • t he jet formed by discharge of the shaped charge has more distance to form itself prior to reaching the perforating gun casing.
  • FIG. 1 1 a flow chart is provided that illustrates a method of forming a non-axisymmctric shaped charge.
  • the method includes forming a non- axisymmetric casing 20 having a hol low interior 2 1 defined by a front portion 22, a plural ity of side wall portions 23, and a back wall portion 25, wherein the front portion 22 is open; forming multiple initiation points 40 in the back wall portion 25 of the casing, the multiple initiation points 40 extending in a planar arrangement along the external surface 62 of the back wall portion 25;
  • the method may optionally include forming and positioning a plurality of guiding members 60 on an external surface 62 of the back wall portion 25 of the casing 20.
  • a method of det onat i ng i n i t i at i ng a non-axisymmetric shaped charge 10, substantially as defined hereinabove, is provided. Initiation of the non-axisymmetric shaped charge 10 may be non-simultaneous. In an embodiment, initiation of the non-axisymmetric shaped charge 10 occurs via a detonation shock propagating substantially simultaneously across the multiple initiation points 40.
  • initiation of the non- axisymmetric shaped charge 10 occurs via a detonation shock propagating with at least a minor time delay across the multiple initiation points 40 caused by the high velocity of the detonating cord, thus initiation of the non-ax isym metric shaped charge 1 0 is substantially non-simultaneous.
  • non-axisymmetric shaped charge, perforating gun incorporating the non-axisymmetric shaped charge and method of forming the n o n - a x i s y m m e t r i c shaped charge include such modifications and variations. Further, steps described in the method may be utilized independently and separately from other steps described herein.
  • non-axisymmetric shaped charge and method of forming the non-axisymmetric shaped charge have been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope contemplated. In addition, many modifications may be made to adapt a particular situation or material to the teachings found herein without departing from the essential scope thereof.
  • the terms “may” and “may be” indicate a possibility of an occurrence within a set of circumstances; a possession of a specified property, characteristic or function; and/or qualify another verb by expressing one or more of an ability, capability, or possibility associated with the qualified verb. Accordingly, usage of "may” and “may be” indicates that a modified term is apparently appropriate, capable, or suitable for an indicated capacity, function, or usage, while taking into account that in some circumstances the modified term may sometimes not be appropriate, capable, or suitable. For example, in some circumstances an event or capacity can be expected, while in other circumstances the event or capacity cannot occur-this distinction is captured by the terms "may” and “may be.”

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  • Life Sciences & Earth Sciences (AREA)
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  • Mining & Mineral Resources (AREA)
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  • Geochemistry & Mineralogy (AREA)
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  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

L'invention concerne une charge de forme non-axisymétrique comprenant un boîtier, tel qu'un boîtier de forme non-axisymétrique, et un revêtement logé à l'intérieur de cette dernière, le boîtier comprenant de multiples points d'initiation s'étendant dans un agencement planaire le long d'une surface externe du boîtier. La charge de forme non-axisymétrique peut comprendre une pluralité d'éléments de guidage positionnés sur la surface externe. La charge de forme non-axisymétrique est capable de créer de l'énergie balistique suffisante pour replier le revêtement de façon uniforme.
PCT/EP2016/069293 2015-08-18 2016-08-12 Initiation à points multiples pour charge de forme non-axisymétrique WO2017029240A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US15/743,718 US20180202779A1 (en) 2015-08-18 2016-08-12 Multiple point initiation for non-axisymmetric shaped charge
EP16756650.4A EP3338049A1 (fr) 2015-08-18 2016-08-12 Initiation à points multiples pour charge de forme non-axisymétrique
CA2995139A CA2995139C (fr) 2015-08-18 2016-08-12 Initiation a points multiples pour charge de forme non-axisymetrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562206496P 2015-08-18 2015-08-18
US62/206,496 2015-08-18

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WO2017029240A1 true WO2017029240A1 (fr) 2017-02-23

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US (1) US20180202779A1 (fr)
EP (1) EP3338049A1 (fr)
CA (1) CA2995139C (fr)
WO (1) WO2017029240A1 (fr)

Cited By (9)

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WO2018130369A1 (fr) * 2017-01-12 2018-07-19 Dynaenergetics Gmbh & Co. Kg Revêtement de charge creuse et charge creuse comportant ledit revêtement
WO2019105721A1 (fr) * 2017-11-29 2019-06-06 Dynaenergetics Gmbh & Co .Kg Élément de fermeture et charge façonnée encapsulée fendue dotée d'un élément de fermeture
US10739115B2 (en) 2017-06-23 2020-08-11 DynaEnergetics Europe GmbH Shaped charge liner, method of making same, and shaped charge incorporating same
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
WO2022148557A1 (fr) * 2021-01-08 2022-07-14 DynaEnergetics Europe GmbH Ensemble perforateur à balles et composants
US20220333906A1 (en) * 2021-04-15 2022-10-20 Schlumberger Technology Corporation Slide-in frame for shaped charges
USD981345S1 (en) 2020-11-12 2023-03-21 DynaEnergetics Europe GmbH Shaped charge casing
US12000267B2 (en) 2022-09-07 2024-06-04 DynaEnergetics Europe GmbH Communication and location system for an autonomous frack system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11187512B1 (en) 2019-08-29 2021-11-30 The United States Of America As Represented By The Secretary Of The Navy Apparatus for detonating munitions

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2196385A1 (fr) * 1997-01-30 1998-07-30 Norman Gerald Lussier Systeme comprenant un dispositif a charges formees
US5792977A (en) * 1997-06-13 1998-08-11 Western Atlas International, Inc. High performance composite shaped charge
WO2009117548A1 (fr) * 2008-03-19 2009-09-24 Owen Oil Tools Lp Dispositifs et procédés permettant de perforer des puits de forage
US20130056208A1 (en) * 2011-09-03 2013-03-07 Baker Hughes Incorporated Method of using a degradable shaped charge and perforating gun system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3625967A1 (de) * 1986-07-31 1988-02-11 Diehl Gmbh & Co Zuender fuer eine projektilbildende ladung
US4852495A (en) * 1988-02-17 1989-08-01 Goex, Inc. Shaped charge detonating cord retainer arrangement
US5007486A (en) * 1990-02-02 1991-04-16 Dresser Industries, Inc. Perforating gun assembly and universal perforating charge clip apparatus
FR2735567B1 (fr) * 1995-06-13 1997-07-25 Tda Armements Sas Tete militaire, notamment a charge generatrice de noyau
US5648635A (en) * 1995-08-22 1997-07-15 Lussier; Norman Gerald Expendalble charge case holder
US6378438B1 (en) * 1996-12-05 2002-04-30 Prime Perforating Systems Limited Shape charge assembly system
US6041818A (en) * 1998-04-23 2000-03-28 Aeroquip Corporation Valve assembly
US6554081B1 (en) * 1999-07-22 2003-04-29 Schlumberger Technology Corporation Components and methods for use with explosives
US20050126420A1 (en) * 2003-09-10 2005-06-16 Givens Richard W. Wall breaching apparatus and method
US7546806B1 (en) * 2006-03-24 2009-06-16 The United States Of America As Represented By The Secretary Of The Army Selectable output well perforator and method for producing variable hole profiles
US10458761B2 (en) * 2017-03-02 2019-10-29 Nicholas Collier Fluted linear shaped charge with simultaneous initiation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2196385A1 (fr) * 1997-01-30 1998-07-30 Norman Gerald Lussier Systeme comprenant un dispositif a charges formees
US5792977A (en) * 1997-06-13 1998-08-11 Western Atlas International, Inc. High performance composite shaped charge
WO2009117548A1 (fr) * 2008-03-19 2009-09-24 Owen Oil Tools Lp Dispositifs et procédés permettant de perforer des puits de forage
US20130056208A1 (en) * 2011-09-03 2013-03-07 Baker Hughes Incorporated Method of using a degradable shaped charge and perforating gun system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018130368A1 (fr) * 2017-01-12 2018-07-19 Dynaenergetics Gmbh & Co. Kg Revêtement de charge creuse, procédé pour sa fabrication et charge creuse l'incorporant
WO2018130369A1 (fr) * 2017-01-12 2018-07-19 Dynaenergetics Gmbh & Co. Kg Revêtement de charge creuse et charge creuse comportant ledit revêtement
US10376955B2 (en) 2017-01-12 2019-08-13 Dynaenergetics Gmbh & Co. Kg Shaped charge liner and shaped charge incorporating same
US10739115B2 (en) 2017-06-23 2020-08-11 DynaEnergetics Europe GmbH Shaped charge liner, method of making same, and shaped charge incorporating same
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
US10954760B2 (en) 2017-11-29 2021-03-23 DynaEnergetics Europe GmbH Closure member and encapsulated slotted shaped charge with closure member
WO2019105721A1 (fr) * 2017-11-29 2019-06-06 Dynaenergetics Gmbh & Co .Kg Élément de fermeture et charge façonnée encapsulée fendue dotée d'un élément de fermeture
US11492877B2 (en) 2017-11-29 2022-11-08 DynaEnergetics Europe GmbH Closure member and encapsulated slotted shaped charge with closure member
US11378363B2 (en) 2018-06-11 2022-07-05 DynaEnergetics Europe GmbH Contoured liner for a rectangular slotted shaped charge
USD981345S1 (en) 2020-11-12 2023-03-21 DynaEnergetics Europe GmbH Shaped charge casing
WO2022148557A1 (fr) * 2021-01-08 2022-07-14 DynaEnergetics Europe GmbH Ensemble perforateur à balles et composants
US20220333906A1 (en) * 2021-04-15 2022-10-20 Schlumberger Technology Corporation Slide-in frame for shaped charges
US11795790B2 (en) * 2021-04-15 2023-10-24 Schlumberger Technology Corporation Slide-in frame for shaped charges
US12000267B2 (en) 2022-09-07 2024-06-04 DynaEnergetics Europe GmbH Communication and location system for an autonomous frack system

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US20180202779A1 (en) 2018-07-19
CA2995139C (fr) 2020-06-30

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