US20090151589A1 - Explosive shock dissipater - Google Patents
Explosive shock dissipater Download PDFInfo
- Publication number
- US20090151589A1 US20090151589A1 US11/957,757 US95775707A US2009151589A1 US 20090151589 A1 US20090151589 A1 US 20090151589A1 US 95775707 A US95775707 A US 95775707A US 2009151589 A1 US2009151589 A1 US 2009151589A1
- Authority
- US
- United States
- Prior art keywords
- layer
- acoustic impedance
- shock
- dissipater
- tool string
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
-
- 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
- E21B43/119—Details, e.g. for locating perforating place or direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
- F42B39/24—Shock-absorbing arrangements in packages, e.g. for shock waves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
Definitions
- the present invention relates in general to explosive devices and more particular to devices and systems for shielding devices from the stress energy propagated from explosions by dissipating the propagated stress energy.
- These explosive devices may be lowered and positioned at the desired location in various manners.
- the explosive charge may be positioned by measuring the length of the conveyance, carrying the explosive charge, that is run into the well until it is believed that the explosive charges are properly positioned.
- shock waves can exert massive forces upon the electronic instrumentation and other downhole equipment, often resulting in damage to or failure of the equipment. It may be desired to shield any number of various devices, or packages, from the shock waves propagated from the explosive device. Packages to be shield from the explosive shock waves may include, without limitation to, sensors, gauges, logging instruments, telemetry devices, additional explosives, and valves.
- an apparatus for dampening a stress wave includes a first interface formed between a first layer of material and a second layer of material, the first and second layers of material having dissimilar acoustic impedances.
- a wellbore tool string includes an explosive device, a package, and a shock dissipater positioned between the explosive device and the package, the shock dissipater includes a first interface formed between a first layer of material and a second layer of material, the first and second layers of material having dissimilar acoustic impedances. Additional layer of alternating acoustic impedance material can be add to further reduce the shock.
- a method of dampening stress waves propagated from the detonation of an explosive device in a wellbore to protect a device positioned downhole includes the steps of positioning a shock dissipater between an explosive device and a package; detonating the explosive device propagating a stress wave toward the shock dissipater and the package; and reflecting a portion of the stress wave in the shock dissipater back to the originating device and propagating a smaller portion of the shock wave through the device.
- FIG. 1 is a wellbore schematic illustrating an example of a tool string incorporating a shock dissipating system of the present invention
- FIG. 2 is partial cross-sectional view of an example of a shock dissipater incorporated into a sub assembly
- FIG. 3 is an illustration of a shock dissipater in isolation.
- the terms “up” and “down”; “upper” and “lower”; and other like terms indicating relative positions to a given point or element are utilized to more clearly describe some elements of the embodiments of the invention. Commonly, these terms relate to a reference point at the surface from which drilling operations are initiated as being the top point and the total depth of the well being the lowest point.
- FIG. 1 is a schematic illustration of an example of a system for dissipating the shock from an explosion, generally denoted by the numeral 10 .
- System 10 includes a tool string, generally denoted by the numeral 12 , suspended by a conveyance 14 in a well or wellbore 16 .
- Conveyance 14 may include without limitation wireline, slickline, coiled tubing, jointed tubing and the like for carrying and suspending tool string 12 in wellbore 16 . It is recognized that conveyance 14 may be included in whole or in part with tool string 12 .
- tool string 12 includes an explosive device 18 , a shock dissipater 20 , and a package 22 .
- Explosive device 18 is illustrated as a perforating gun; however explosive device 18 may be without limitation a coring device, a cutting tool or other device that includes an explosive charge or other element that produces a shock wave upon activation.
- Package 22 may be any device, tool or system that it is desired to be protected from the shock waves propagated from the detonation or activation of explosive device 18 .
- package 22 is often referred to generally as an electronics package.
- package 22 may include electronics and instrumentation for sensing pressure or temperature.
- Package 22 may be an electronics package such as, without limitation, logging instruments, telemetry equipment, and positioning instruments.
- package 22 may include any other device that may need to be shielded from the shock waves of the explosive device, including without limitation, valves and explosive devices.
- Shock dissipater 20 is provided for dampening shock energy generated by downhole explosive device 18 , thus providing a means for running packages 22 in tool string 12 .
- dissipation device 20 is illustrated as a sub assembly that is positioned within tool string 12 between perforating gun 18 and package 22 .
- dissipating device 20 may be formed for example as part of package 22 or within explosive device 18 .
- Dissipater 20 of the present example is illustrated incorporated into an assembly that is adapted for threadably connecting within tool string.
- Dissipater 20 includes a body or housing 24 , which in the illustrated example is a tubular collar having a longitudinal axis 26 .
- housing 24 forms an axial bore 28 that, may or may not, extend the full length of housing 24 , as will be further explained below.
- Dissipater 20 which will be described in more detail below with reference to FIG. 3 , includes two dissimilar members 30 a and 30 b that form an interface 32 therebetween. Dissipater 20 is connected within housing 24 so that interface 32 is positioned approximately perpendicular to longitudinal axis 26 .
- a conduit 34 may be formed through shock dissipater 20 . In this example, conduit 34 is oriented substantially parallel to longitudinal axis 26 and bore 28 .
- Conduit 34 may be provided, for example, for passing wiring (not shown) to perforating gun 18 ( FIG. 1 ) or other electronics, or for passing a drop bar for detonating explosive device 18 .
- dissipater 20 is constructed of three members or layers denoted by the numeral 30 a , 30 b , and 30 c .
- the Figures only illustrated examples having either two layers 30 , one interface 32 , or three layers 30 , two interfaces 32 , more than three layers 30 may be utilized.
- Each layer 30 is constructed of a material having acoustic impedance (I), which is defined generally as the acoustic sound speed (c) in the material multiplied by the density ( ⁇ ) of the material of construction.
- I acoustic impedance
- Layers 30 are positioned in contact with one another to form interfaces 32 .
- Adjacent layers 30 have dissimilar acoustic impedance, and are referred to herein as dissimilar layer or members.
- layer 30 a has an impedance I a
- layer 30 b has an impedance of I b
- 30 c has an impedance I c , which is different from and therefore dissimilar to its adjacent layer 30 b .
- Layer 30 c has an impedance that is dissimilar to layer 30 b , and that may be the same as or different from the impedance of layer 30 a.
- shock or stress waves propagate through the first dissipating layer 30 a encountered.
- Stress waves 36 include a tensile portion and a compressive portion.
- interface 32 ab a portion of the stress energy is transmitted into the adjacent layer 30 b , illustrated by the arrow 36 t , and a portion is reflected, illustrated by the arrow 36 r .
- stress energy 36 t encounters interface 36 bc a portion is transmitted and a portion is reflected. Any of the interfaces could be angled so as to deflect shock or stress waves coming from any potential direction as necessary.
- a portion of the stress wave is transmitted and a portion of the stress wave is reflected.
- the impedance of the first layer encountered is less than the impedance of the second layer encountered (I a ⁇ I b ) a tensile stress wave is reflected.
- the impedance of the first layer encountered is greater than the impedance of the second layer encountered (I a >I b ) a compressive stress wave is reflected.
- KR coefficient of reflection
- K T coefficient of transmission
- K T 2 ⁇ I 2 I 2 + I 1
- K R I 2 - I 1 I 2 + I 1
- dissipater 20 may be constructed in various forms and positioned in different positions to protect a package 22 as desired or needed.
- package 22 may be an electronics package 22 that is positioned proximate to explosive device 18 and therefore need a substantial amount of protection from the shock wave encountered upon detonation.
- Shock dissipater 20 may be positioned between package 22 and explosive device 18 for example in a sub assembly, or positioned within the housing incorporating package 22 . Due to the high degree of shock, or stress, wave dissipation required dissipater 20 may be formed with more than one interface 32 .
- a few examples of materials that may be used for layers 30 include elastomeric materials, rubber, plastic, various grades of metals, steel, iron, encapsulated water, cement and air. If more than two layers 30 are utilized, the materials of construction may be alternated, for example rubber-steel-rubber, or may include more than two materials of construction, for example rubber-steel-cement-steel. It is further noted that the same type of material may be utilized in adjacent layers, provided that the materials have dissimilar impedances. Also, the same material may be used in non-adjacent layers along the lines noted above.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
- Buffer Packaging (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/957,757 US20090151589A1 (en) | 2007-12-17 | 2007-12-17 | Explosive shock dissipater |
CNA200810095954XA CN101463720A (zh) | 2007-12-17 | 2008-04-30 | 爆炸冲击消散器 |
GB0819488A GB2455854B (en) | 2007-12-17 | 2008-10-24 | Explosive shock dissipater |
NO20085210A NO20085210L (no) | 2007-12-17 | 2008-12-15 | Sjokkdemper for eksplosiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/957,757 US20090151589A1 (en) | 2007-12-17 | 2007-12-17 | Explosive shock dissipater |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090151589A1 true US20090151589A1 (en) | 2009-06-18 |
Family
ID=40133734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/957,757 Abandoned US20090151589A1 (en) | 2007-12-17 | 2007-12-17 | Explosive shock dissipater |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090151589A1 (no) |
CN (1) | CN101463720A (no) |
GB (1) | GB2455854B (no) |
NO (1) | NO20085210L (no) |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110160375A1 (en) * | 2009-12-28 | 2011-06-30 | Nissin Kogyo Co., Ltd. | Carbon fiber composite material, method of producing the same, insulating article, electronic part, and logging tool |
WO2013032456A1 (en) * | 2011-08-31 | 2013-03-07 | Halliburton Energy Services, Inc. | Perforating gun with internal shock mitigation |
US8393393B2 (en) | 2010-12-17 | 2013-03-12 | Halliburton Energy Services, Inc. | Coupler compliance tuning for mitigating shock produced by well perforating |
US8397814B2 (en) | 2010-12-17 | 2013-03-19 | Halliburton Energy Serivces, Inc. | Perforating string with bending shock de-coupler |
US8397800B2 (en) | 2010-12-17 | 2013-03-19 | Halliburton Energy Services, Inc. | Perforating string with longitudinal shock de-coupler |
US8714251B2 (en) | 2011-04-29 | 2014-05-06 | Halliburton Energy Services, Inc. | Shock load mitigation in a downhole perforation tool assembly |
US20140260591A1 (en) * | 2012-12-01 | 2014-09-18 | Halliburton Energy Services, Inc. | Protection of Electronic Devices Used with Perforating Guns |
US8875796B2 (en) | 2011-03-22 | 2014-11-04 | Halliburton Energy Services, Inc. | Well tool assemblies with quick connectors and shock mitigating capabilities |
US8899320B2 (en) | 2010-12-17 | 2014-12-02 | Halliburton Energy Services, Inc. | Well perforating with determination of well characteristics |
US8978749B2 (en) | 2012-09-19 | 2015-03-17 | Halliburton Energy Services, Inc. | Perforation gun string energy propagation management with tuned mass damper |
US8985200B2 (en) | 2010-12-17 | 2015-03-24 | Halliburton Energy Services, Inc. | Sensing shock during well perforating |
US9091152B2 (en) | 2011-08-31 | 2015-07-28 | Halliburton Energy Services, Inc. | Perforating gun with internal shock mitigation |
CN105352696A (zh) * | 2015-11-17 | 2016-02-24 | 北京理工大学 | 爆炸冲击下井下管柱动态响应测试系统及测试方法 |
US20160084048A1 (en) * | 2013-05-03 | 2016-03-24 | Schlumberger Technology Corporation | Cohesively Enhanced Modular Perforating Gun |
US9297228B2 (en) | 2012-04-03 | 2016-03-29 | Halliburton Energy Services, Inc. | Shock attenuator for gun system |
US9598940B2 (en) | 2012-09-19 | 2017-03-21 | Halliburton Energy Services, Inc. | Perforation gun string energy propagation management system and methods |
US10077641B2 (en) | 2012-12-04 | 2018-09-18 | Schlumberger Technology Corporation | Perforating gun with integrated initiator |
US10246975B2 (en) * | 2015-06-30 | 2019-04-02 | Schlumberger Technology Corporation | System and method for shock mitigation |
FR3073551A1 (fr) * | 2017-11-15 | 2019-05-17 | Halliburton Energy Services, Inc. | Pistolet perforateur |
US10927649B2 (en) * | 2017-04-19 | 2021-02-23 | Halliburton Energy Service, Inc. | System and method to control wellbore pressure during perforating |
WO2022015921A1 (en) * | 2020-07-15 | 2022-01-20 | Baker Hughes Oilfield Operations Llc | Adjustable strength shock absorber system for downhole ballistics |
US11377935B2 (en) | 2018-03-26 | 2022-07-05 | Schlumberger Technology Corporation | Universal initiator and packaging |
US11566500B2 (en) | 2019-02-08 | 2023-01-31 | Schlumberger Technology Corporation | Integrated loading tube |
US11834934B2 (en) | 2019-05-16 | 2023-12-05 | Schlumberger Technology Corporation | Modular perforation tool |
USD1016958S1 (en) | 2020-09-11 | 2024-03-05 | Schlumberger Technology Corporation | Shaped charge frame |
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CN109708542B (zh) * | 2019-03-15 | 2024-04-12 | 山西师范大学 | 用于爆炸物存储的隔离装置 |
CN110986711B (zh) * | 2019-12-17 | 2021-01-01 | 武汉大学 | 弱震爆破装药装置及其使用方法 |
CN114440717B (zh) * | 2021-12-17 | 2023-02-28 | 西安交通大学 | 一种能够消减冲击波强度的推送杆 |
CN114483032B (zh) * | 2021-12-17 | 2023-03-21 | 西安交通大学 | 一种用于推送杆的冲击波消减方法 |
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- 2008-10-24 GB GB0819488A patent/GB2455854B/en not_active Expired - Fee Related
- 2008-12-15 NO NO20085210A patent/NO20085210L/no not_active Application Discontinuation
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Cited By (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110160375A1 (en) * | 2009-12-28 | 2011-06-30 | Nissin Kogyo Co., Ltd. | Carbon fiber composite material, method of producing the same, insulating article, electronic part, and logging tool |
US8901228B2 (en) | 2009-12-28 | 2014-12-02 | Nissin Kogyo Co., Ltd. | Carbon fiber composite material, method of producing the same, insulating article, electronic part, and logging tool |
US8393393B2 (en) | 2010-12-17 | 2013-03-12 | Halliburton Energy Services, Inc. | Coupler compliance tuning for mitigating shock produced by well perforating |
US8397814B2 (en) | 2010-12-17 | 2013-03-19 | Halliburton Energy Serivces, Inc. | Perforating string with bending shock de-coupler |
US8397800B2 (en) | 2010-12-17 | 2013-03-19 | Halliburton Energy Services, Inc. | Perforating string with longitudinal shock de-coupler |
US8408286B2 (en) | 2010-12-17 | 2013-04-02 | Halliburton Energy Services, Inc. | Perforating string with longitudinal shock de-coupler |
US8490686B2 (en) | 2010-12-17 | 2013-07-23 | Halliburton Energy Services, Inc. | Coupler compliance tuning for mitigating shock produced by well perforating |
US8985200B2 (en) | 2010-12-17 | 2015-03-24 | Halliburton Energy Services, Inc. | Sensing shock during well perforating |
US8899320B2 (en) | 2010-12-17 | 2014-12-02 | Halliburton Energy Services, Inc. | Well perforating with determination of well characteristics |
US8875796B2 (en) | 2011-03-22 | 2014-11-04 | Halliburton Energy Services, Inc. | Well tool assemblies with quick connectors and shock mitigating capabilities |
US9206675B2 (en) | 2011-03-22 | 2015-12-08 | Halliburton Energy Services, Inc | Well tool assemblies with quick connectors and shock mitigating capabilities |
US8714251B2 (en) | 2011-04-29 | 2014-05-06 | Halliburton Energy Services, Inc. | Shock load mitigation in a downhole perforation tool assembly |
US8881816B2 (en) | 2011-04-29 | 2014-11-11 | Halliburton Energy Services, Inc. | Shock load mitigation in a downhole perforation tool assembly |
US8714252B2 (en) | 2011-04-29 | 2014-05-06 | Halliburton Energy Services, Inc. | Shock load mitigation in a downhole perforation tool assembly |
US20140290352A1 (en) * | 2011-06-16 | 2014-10-02 | Halliburton Energy Services, Inc. | Protection of Electronic Devices Used with Perforating Guns |
US9091152B2 (en) | 2011-08-31 | 2015-07-28 | Halliburton Energy Services, Inc. | Perforating gun with internal shock mitigation |
WO2013032456A1 (en) * | 2011-08-31 | 2013-03-07 | Halliburton Energy Services, Inc. | Perforating gun with internal shock mitigation |
US9297228B2 (en) | 2012-04-03 | 2016-03-29 | Halliburton Energy Services, Inc. | Shock attenuator for gun system |
US9598940B2 (en) | 2012-09-19 | 2017-03-21 | Halliburton Energy Services, Inc. | Perforation gun string energy propagation management system and methods |
US8978749B2 (en) | 2012-09-19 | 2015-03-17 | Halliburton Energy Services, Inc. | Perforation gun string energy propagation management with tuned mass damper |
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Also Published As
Publication number | Publication date |
---|---|
GB2455854B (en) | 2010-03-31 |
GB2455854A (en) | 2009-06-24 |
CN101463720A (zh) | 2009-06-24 |
NO20085210L (no) | 2009-06-18 |
GB0819488D0 (en) | 2008-12-03 |
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