EP1828708A1 - Inserts de charge creuse constitues de melanges de metaux pulverulents - Google Patents

Inserts de charge creuse constitues de melanges de metaux pulverulents

Info

Publication number
EP1828708A1
EP1828708A1 EP05825529A EP05825529A EP1828708A1 EP 1828708 A1 EP1828708 A1 EP 1828708A1 EP 05825529 A EP05825529 A EP 05825529A EP 05825529 A EP05825529 A EP 05825529A EP 1828708 A1 EP1828708 A1 EP 1828708A1
Authority
EP
European Patent Office
Prior art keywords
powder metal
metal mixtures
lead
hollow charge
tungsten
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Withdrawn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
EP05825529A
Other languages
German (de)
English (en)
Inventor
Uwe Gessel
Malte Veehmayer
Liam Mcnelis
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.)
DynaEnergetics GmbH and Co KG
Original Assignee
DynaEnergetics GmbH and 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 and Co KG filed Critical DynaEnergetics GmbH and Co KG
Publication of EP1828708A1 publication Critical patent/EP1828708A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F42B1/032—Shaped or hollow charges characterised by the material of the liner

Definitions

  • the present invention relates to liners for hollow charges made of cold-pressed powder metal mixtures which are used, for example, in the field of oil and gas-conveying industry for the purpose of deep borehole blasting.
  • the powder metal mixtures used to make the inserts can be varied widely.
  • a blend may contain 10 to 30 weight percent of a soft metal that serves as a binder, while the remainder of the blend may be harder metals.
  • a binder lead is used in most commercial deposits.
  • other metals such as bismuth, silver, gold, tin, uranium, antimony, zinc, cobalt or nickel.
  • the remainder of the mixture often consists of heavy metals such as copper, bronze and / or tungsten in different mixing ratios. In order to achieve greater penetration depths, it is proposed in the relevant literature to choose the density of the deposit material as high as possible.
  • tungsten is particularly suitable as a material for powder-shaped hollow charge deposits, as proposed in US Pat. No. 5,656,791 A and DE 196 25 897 A1.
  • the pellets from the mixture become unstable and can no longer be handled, lower tungsten fractions lead to a reduction in density.
  • Object of the present invention was the provision of inserts for shaped charges, which cause a large hole diameter at the same time high penetration depth.
  • the object is achieved by the features of the main claim.
  • Preferred embodiments can be found in the subclaims. It was found that the addition of light metal powders, for example aluminum and / or titanium powder, to tungsten-lead mixtures or tungsten-copper / bronze-lead mixtures leads to a significant increase in the hole diameter, without causing great losses in the penetration depth .
  • tantalum and / or other heavy metals and / or their alloys can also be used.
  • Tungsten can also be completely replaced by bronze or copper or a mixture of these with the addition of light metal powders and higher levels of lead in the mixture. Bronze and copper can be used in any mixing ratios.
  • molybdenum can also be added to these powder metal mixtures according to the invention for the production of hollow charge deposits.
  • Hollow charge inserts made of powder metal mixtures, which additionally contain graphite.
  • Hollow charge inserts made of powder metal mixtures containing tantalum and / or other heavy metals and / or their alloys in addition to or instead of tungsten.
  • Inventive hollow charge deposits made of powder metal mixtures, prepared by cold pressing of powder metal mixtures.
  • Example 1 Hollow charge insert 1 73.5% by weight bronze 19.5% by weight lead 7% by weight titanium

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

La présente invention concerne des inserts de charge creuse constitués de mélanges de métaux pulvérulents qui sont compactés à froid et trouvent une application, par exemple, dans le domaine de l'industrie d'extraction de pétrole et de gaz aux fins de dynamitage de forage profond.
EP05825529A 2004-12-13 2005-12-12 Inserts de charge creuse constitues de melanges de metaux pulverulents Withdrawn EP1828708A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004060136 2004-12-13
DE102005002816 2005-01-20
DE102005011190 2005-03-09
PCT/EP2005/013283 WO2006063753A1 (fr) 2004-12-13 2005-12-12 Inserts de charge creuse constitues de melanges de metaux pulverulents

Publications (1)

Publication Number Publication Date
EP1828708A1 true EP1828708A1 (fr) 2007-09-05

Family

ID=36046942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05825529A Withdrawn EP1828708A1 (fr) 2004-12-13 2005-12-12 Inserts de charge creuse constitues de melanges de metaux pulverulents

Country Status (6)

Country Link
US (1) US20090294176A1 (fr)
EP (1) EP1828708A1 (fr)
AR (1) AR051712A1 (fr)
CA (1) CA2590052A1 (fr)
NO (1) NO20072889L (fr)
WO (1) WO2006063753A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201012716D0 (en) 2010-07-29 2010-09-15 Qinetiq Ltd Improvements in and relating to oil well perforators
US8869703B1 (en) * 2012-10-19 2014-10-28 Textron Systems Corporation Techniques utilizing high performance armor penetrating round
US9862027B1 (en) 2017-01-12 2018-01-09 Dynaenergetics Gmbh & Co. Kg Shaped charge liner, method of making same, and shaped charge incorporating same
MX2019015205A (es) * 2017-06-23 2020-02-07 Dynaenergetics Gmbh & Co Kg Tuberia corta de carga moldeada, metodo para fabricar la misma y carga moldeada que incorpora la misma.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388663A (en) * 1964-04-30 1968-06-18 Pollard Mabel Shaped charge liners
US5331895A (en) * 1982-07-22 1994-07-26 The Secretary Of State For Defence In Her Britanic Majesty's Government Of The United Kingdon Of Great Britain And Northern Ireland Shaped charges and their manufacture
US5221808A (en) * 1991-10-16 1993-06-22 Schlumberger Technology Corporation Shaped charge liner including bismuth
US5567906B1 (en) 1995-05-15 1998-06-09 Western Atlas Int Inc Tungsten enhanced liner for a shaped charge
US5656791A (en) 1995-05-15 1997-08-12 Western Atlas International, Inc. Tungsten enhanced liner for a shaped charge
US6354219B1 (en) 1998-05-01 2002-03-12 Owen Oil Tools, Inc. Shaped-charge liner
EP1134539A1 (fr) * 2000-02-07 2001-09-19 Halliburton Energy Services, Inc. Poudres métalliques mixtes à hautes performances pour revetements de charge formes
US6962634B2 (en) * 2002-03-28 2005-11-08 Alliant Techsystems Inc. Low temperature, extrudable, high density reactive materials
US6564718B2 (en) * 2000-05-20 2003-05-20 Baker Hughes, Incorporated Lead free liner composition for shaped charges
US7011027B2 (en) * 2000-05-20 2006-03-14 Baker Hughes, Incorporated Coated metal particles to enhance oil field shaped charge performance
US6371219B1 (en) * 2000-05-31 2002-04-16 Halliburton Energy Services, Inc. Oilwell perforator having metal loaded polymer matrix molded liner and case
US7393423B2 (en) * 2001-08-08 2008-07-01 Geodynamics, Inc. Use of aluminum in perforating and stimulating a subterranean formation and other engineering applications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006063753A1 *

Also Published As

Publication number Publication date
AR051712A1 (es) 2007-01-31
US20090294176A1 (en) 2009-12-03
WO2006063753A1 (fr) 2006-06-22
CA2590052A1 (fr) 2006-06-22
NO20072889L (no) 2007-09-04

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