EP0601880A2 - Détonateur pour perforateur de puits avec feuille explosante - Google Patents
Détonateur pour perforateur de puits avec feuille explosante Download PDFInfo
- Publication number
- EP0601880A2 EP0601880A2 EP93309990A EP93309990A EP0601880A2 EP 0601880 A2 EP0601880 A2 EP 0601880A2 EP 93309990 A EP93309990 A EP 93309990A EP 93309990 A EP93309990 A EP 93309990A EP 0601880 A2 EP0601880 A2 EP 0601880A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- firing
- elongate
- detonating cord
- chamber
- firing unit
- 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- Withdrawn
Links
- 239000011888 foil Substances 0.000 title claims description 35
- 238000010304 firing Methods 0.000 claims abstract description 72
- 239000002360 explosive Substances 0.000 claims description 32
- 239000008188 pellet Substances 0.000 claims description 23
- 238000005474 detonation Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 239000003999 initiator Substances 0.000 claims description 13
- 230000000977 initiatory effect Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 230000003319 supportive effect Effects 0.000 claims description 5
- 230000008093 supporting effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 8
- 239000004020 conductor Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000002028 premature Effects 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
-
- 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
- E21B43/1185—Ignition systems
Definitions
- the present disclosure is directed to an exploding foil detonator for use in a perforating gun assembly which is typically installed in a cased well borehole for forming perforations through the casing, through the cement on the exterior of the casings and into the adjacent formations.
- the perforations are formed by shaped charges which are cone shaped explosive components in appropriate shells. While a perforating gun can support only one at a minimum, it typically is assembled supporting a large number of shaped charges so that a large number of perforations can be formed in a defined region. It is necessary to assemble the perforating gun and the numerous shaped charges at the surface and the entire perforating gun assembly is then lowered into the well borehole.
- Premature detonation must be prevented.
- One way to accomplish this is to utilize explosives which are not very sensitive.
- the relative sensitivity of explosives is defined by designating the explosives as primary or secondary explosives.
- the secondary explosives used in detonators are relatively insensitive. That makes premature or unintended detonation difficult. This virtue enhances the safety of the perforating gun assembly. However, and in opposite fashion, it also makes it very difficult to detonate when intended.
- a safety device which has found acceptance is an exploding foil detonator, sometimes called a slapper detonator.
- the slapper type detonator is difficult to initiate. This again is a safety feature because, in order to function, the rate of energy delivery is perhaps a million more times than a conventional hot wire detonator. This helps assure safety because it reduces sensitivity to stimuli which might otherwise cause unintended detonation such as exposure to RF fields, perhaps detonation as a result of static electricity in the region, friction, heat, or impact during usage.
- the current must be delivered in a very short time. Typical values of the current pulse are 2000-3000 amperes delivered in less than 1/2 microsecond. It is this unique combination of high current and short delivery time that make exploding foil initiators so safe.
- This type of firing pulse is simply a firing stimuli which is not found in nature. Because of the unique characteristics of this signal (rise time and current peak), it is necessary to employ a capacitive discharge firing unit to create it.
- the capacitive discharge unit allows electrical energy to be stored, up to a predetermined value, and dumped at once to the detonator foil. The discharged energy causes a very high current to flow through the foil, heating it to the plasma state.
- the violently expanding plasma causes a disk of plastic (which was in contact with the foil) to be propelled across a gap until it impacts the secondary explosive charge. It is the impact of this disk which causes prompt (and safe) initiation of the secondary explosive pellet within the detonator.
- One important feature of the present apparatus is the availability of cylindrical components which are fitted together, thereby defining a cylindrical construction for the entire set of apparatus. Also. a hermetic feedthrough is not consumed in every shot. Cylindrical geometry enables the components to be more readily manufactured and assembled. This also enables easy assembly into a set of equipment which has reduced inductance. This reduces the voltage required for firing purposes. More specifically, this enables provision of a detonator assembly which responds with the intended explosion when a current is applied to it so that the circuit inductance does not prevent proper and reliable firing of the detonator.
- the present apparatus is able to cooperate with a cylindrical, coaxial feedthrough in conjunction with a coaxial cable.
- the equipment is therefore quite easy to assemble and provides a reliable structure.
- it is constructed in such a way as to reduce the inductive and resistive losses through the connection. The risk of arcing is reduced, and the feedthrough is not destroyed with each shot.
- a perforating gun assembly for use in detonating one or more shaped charges supported by the perforating gun assembly, which assembly comprises:
- an apparatus for use in an exploding foil detonator assembly for a perforating gun supporting one or more shape charges comprising:
- Fig. 4 shows a typical embodiment of the perforating gun tool string.
- the tool string 1 is comprised (from the top) of a cable head 2 which permits the assembly to be suspended from a wireline logging cable 3.
- the lower end of the cable head is connected to a device for depth correlation 4; this device 4 can either be a casing collar locator or logging tool that measures gamma-ray activity from the downhole formations.
- Attached below the correlation device 4 is a decentralizer 5 which is used to obtain proper azimuthal orientation of the tool string inside the casing.
- a capacitive discharge firing unit 6 is below the decentralizer 5. This is the device that internally stores electrical energy until it is ready to be discharged in order to fire the exploding foil initiator.
- a firing head 7 Positioned below the capacitive discharge firing unit 6 is a firing head 7. This houses the firing cable and detonator as depicted in Fig. 1B. Attached to the firing head are the perforating components, detonating cord 52 and shaped charges 50, exposed to the wellbore environment.
- This type perforating gun is typically called a "capsule”, or “semi-expendable” gun.
- Fig. 1A shows the upper end of the firing assembly.
- the description will begin with the upper end and proceed to the lower end which is shown in Fig. 1B, the two views being connected serially. After that, details will be given regarding the assembly shown in Fig. 2.
- the firing assembly 10 includes the aforementioned decentralizer 5 at the upper end which connects with a sub 12.
- the decentralizer 5 joins to the sub 12 and is held in place by means of cap screws 13.
- the interior volume is sealed by suitable seal rings 14.
- a sealed chamber 16 is defined on the interior and encloses a connector formed with a plug and socket indicated generally at 17. This is assembled in the chamber 16. It connects serially with a short rod 18 which extends through the sub 12.
- the sub 12 is equipped with a surrounding outer shoulder which receives a surrounding housing 20 which is positioned on the exterior.
- the housing is fastened to the sub 12 by means of cap screws 21, there being two or more screws incorporated for this purpose. This interconnection is made fluid tight by the provision of circular seals 22.
- the seals define an internally located seal mechanism defining a fluid tight chamber on the interior.
- a cylindrically shaped capacitive discharge firing assembly 25 By means of a sleeve 23 and cooperative spring 24, registration is accomplished for a cylindrically shaped capacitive discharge firing assembly 25.
- the assembly 25 has safety and arming circuits 90, a power supply 91, capacitors 92, bleeder resistors 93, and a spark gap 94.
- Fig. 5 is a block diagram that shows this circuit arrangement.
- the firing assembly 25 is connected with the input by means of a conductor 26 which is joined to a fitting 27.
- the conductor 26 connects with the conductor 18 previously mentioned wherein the two join at a mating plug and socket 28. This enables the telescoped construction to be joined. This enables electric current to be provided to the firing assembly 25 which is enclosed in the housing 20.
- the housing 20 extends the full length of the cylindrical assembly 25.
- the housing terminates at a central plug 29 which has a reduced external diameter and which is formed integral with the housing 20.
- the plug 29 is incorporated to provide a transition for the next portion of the equipment, The plug 29 therefore has a reduced diameter. It is axially drilled to support a coaxial hermetic feedthrough 28.
- the feedthrough 28 connects to the assembly 25.
- the plug has several grooves in the exterior to receive seal rings. This enables a leak proof connection to be made.
- the firing head 7 is formed of an elongate cylindrical chamber 30. It is constructed with one end fitting around the plug 26 and is fastened by means of two or more cap screws 31. This defines a smooth exterior. Moreover, the chamber 30 is constructed with a hollow region 32 on the interior. That chamber region is sealed. It is sealed at the left hand end by the plug 29.
- the firing assembly 25 connects with the coaxial feedthrough 28 previously mentioned. There is an elastomeric sealing boot 37 which fits around the exterior of the feedthrough 28. In addition to that, the plug 29 is provided with an enlarged hole 34 drilled into it. This permits the sealing rings 99 on the feedthrough 28 to prevent fluid intrusion into the firing assembly 25 after detonation.
- the hollow region 32 is dry before firing; it is flooded afterward.
- the end of the feedthrough terminates with a protruding metal coaxial conductor 35 which is electrically connected by a metal coaxial cap 36 fitted over it.
- the cap 36 is on the interior of the protective resilient rubber boot 37.
- the boot 37 surrounds the tip of the feedthrough and assures structural security so that the connection which is accomplished from the metal coaxial conductor 35 to the coaxial cap 36 is secure from impact or damage from wellbore fluids surrounding it after firing.
- the coaxial cap 36 connects with a coaxial cable 40.
- the cable 40 is provided with extra length in the form of several loops in the chamber 32.
- the coaxial cable extends to the far end of the chamber and passes through an opening in a detonator which is positioned at the remote end of the chamber 32. Greater details will be observed on review of Fig. 2 of the drawings which is an enlarged view of this detonator.
- Fig. 1A the support mechanism which holds a string of shaped charges. While the apparatus will certainly function with only one shaped charge, normally several are included. Assuming that a large number of shaped charges are supported by the equipment shown in Fig. 1, that equipment has to be sufficiently rugged to support the weight of the shaped charges attached to the lower end of the equipment. This is taken into account in the thickness of the components shown in Fig. 1. To this end, the housing 20 has a specified wall thickness so that it can support the weight of the equipment suspended below. Moreover, the screws 13, 21 and 31 are sized and provided in sufficient quantity so that the equipment can readily support the weight which is suspended below.
- the chamber 30 in particular being cylindrical and to note that it terminates at a truncated face 44.
- These bolts serve as fasteners for securing a strip 48.
- the strip 48 serves as an anchor or support for one or more shaped charges 50.
- the shaped charges are aligned by the strip 48 to a common azimuth.
- One strip 48 is shown in this view.
- the shape charges are all connected to a common detonating cord 52.
- the detonating cord 52 connects at multiple explosive cord connectors 53 for the several shaped charges 50. This permits the explosive connection to be made through the detonating cord to all the shaped charges. As will be understood, they are detonated from the top end. It is desirable that the detonating cord be initiated by the equipment shown in this disclosure which then extends the detonation to the several shaped charges hanging below the equipment.
- the detonating cord 52 terminates at the detonator mechanism which is shown in Fig. 2 of the drawings.
- the detonating cord 52 is therefore initiated in operation by the detonator assembly shown in Fig. 2 generally identified by the reference numeral 55, As a generalization, it is a separate assembly which is more aptly described in some detail in U.S. patent 4,759,291.
- this detonator assembly shown at Fig. 2 incorporates a plug 56 which is provided with a set of threads for attachment in a mating hole at the end of the chamber 30 mentioned above. It incorporates a surrounding external sleeve 58 which is provided with one or more grooves for sealing O-rings 57. This prevents leakage along the exterior of the body. The sleeve 58 threads to the plug 56.
- the coaxial cable is formed with an outer mesh which is in the form of a woven wire mesh cylinder surrounding an internal insulator.
- a pig tail is formed by trimming back and grouping the wires that make up the electrically conductive screen. In particular, this permits appropriate connection by soldering the described pig tail into the shaped pin 61.
- the coaxial cable includes an inner woven conductor which enables a pin 62 to be supported and connected thereby defining two spaced pins..
- the device incorporates an electrical circuit which is completed through the structure shown in Fig. 3.
- This is formed of a sandwich type material.
- This composite or layered material utilizes an insulating material 63 shown in Fig. 3.
- the preferred construction utilizes a thin piece of dielectric material, one brand being known under the trademark Kapton.
- a thin film of copper is laminated on it, and this laminated blank material is sold under the trademark Microclad. It finds common application in making printed circuit boards.
- the copper layer is shaped into the narrow neck 64 and the insulative material remains over it.
- the copper layer has the shape of an hour glass. It is mounted so that the insulative material (Kapton in the preferred version) faces an explosive initiating pellet 66. The pellet 66 in turn immediately abuts another explosive pellet 67. These two pellets are adjacent to the Kapton material and are separated by a narrow space.
- a thimble 68 having a central hole 70 is placed over the sacrificial foil construction described with regard to Fig. 3. Briefly, the thimble 68 has a surrounding skirt which enables it to be placed over that sacrificial foil.
- the central hole 70 serves as an alignment passage. It is able to direct a flying disk against the first explosive pellet 66. It should be noted that the skin on the thimble is not necessary provided other means are employed to maintain alignment of the central hole over the narrow neck.
- the thimble 68 is provided with a central hole 70 thereby forming a circular disk from the insulator which is fired by gas pressure through the circular hole 70. While Fig. 2 shows the hole to be quite short, it is nevertheless able to cut a flying disk from the insulator so that the flying disk is shot, so to speak, against the explosive pellet 66.
- the pellet 66 and 67 are selected for safety. They are secondary explosives which are difficult to initiate or detonate, but which are sufficiently sensitive to be responsive to the flying disk which is fired against the pellet 66. The explosion is initiated in the pellet 66 and in turn that is coupled to the explosive pellet 67. The pellet 67 is covered over with a thin metal plate 71.
- the plate 71 is severed to form a metal flyer which strikes against an explosive" pellet 72. On impact, that flyer impingement causes the pellet 72 to detonate and couples the explosive force to the detonating cord 52. This detonates the detonating cord at the end. Once started, the explosive reaction is carried by the detonating cord to the many shaped charges.
- the sleeve 58 encloses the assembled pellets 66 and 67 and provides spacing so that the metal flyer plate 71 has a specified distance of travel. Moreover, this spaced arrangement is assured so that the detonating cord does not pull free.
- the explosive pellet 72 is held against the end of the detonating cord by a pellet cap 74 which in turn is held in position by a sleeve 76 fastening over the end of the detonating cord.
- the sleeve 76 operates in conjunction with the end of the pellet cap 74 which rolls over to pinch and thereby staple the end of the detonating cord 52 at a fixed location. This keeps the detonating cord from pulling free.
- the sleeve 58 threads at the far right hand end. It has sufficient length that it extends over the end of the detonating cord 52. It has sufficient length that it provides alignment, support and certain fastening for the end of the detonating cord. Moreover, the end of the sleeve 58 is sealed by a large resilient boot 80 which is positioned over the top end of the detonating cord to prevent leakage along the detonating cord into the boot. Finally, the entire assembly 55 shown in Fig. 2 of the drawings is anchored to the coaxial cable 40 previously mentioned and is threaded in place. At the time of assembly, the chamber 30 is made open and exposed for easy assembly. At the time of fabrication of the equipment, the detonating cord 52 is connected through the boot 80 shown in Fig. 2 of the drawings and is brought to the proper termination.
- the coaxial cable 40 is required to be a large current conductor and more particularly a conductor in which the inductance must be kept low.
- the exploding foil operates under the ideal that the current is substantially a step function. When switched on, it is fully on so that the rise time of the current is substantially instantaneous. Distributed inductance along the route is detrimental. This type construction reduces the inductance. Should the inductance be excessive, it will retard the rise time. If that occurs, the velocity of the disk which is fired at the explosive pellets to begin detonation is reduced.
- rise time is reduced if stray inductance is present.
- the present mechanism provides a means of reducing danger in handling the detonator 55 along with the increased rise time requirements for the current flow. Considering the fact that the detonator may be used at depths of 10,000 feet or greater in a well borehole, it becomes critical that the detonator provide as much safety as possible and that is accomplished by the presently disclosed apparatus.
- the apparatus of this disclosure provides additional enhancement.
- the expensive part of the equipment is the firing assembly 25 and the coaxial feedthrough 28 which connects with it. These are structural components which can be used time and again. They are sufficiently spaced from the detonator 55 that they can be retrieved and reused.
- the detonator 55 is constructed so that its use directs the explosive damages that result from proper operation downwardly. This accompanies the detonation of the detonating cord 52. This forms the necessary shock wave for the detonating cord initiation.
- the equipment that is normally destroyed includes the detonating cord 52, and all the shaped charges 50 which are supported on the mounting strip. Generally, it is desirable that the remaining equipment be retrieved to the surface rather than left in the hole.
- the equipment retrieved typically after proper operation, includes the cylinder 30 which is reused by positioning a new detonator 55 in it. While the detonator 55 is consumed, it can be replaced more readily because it is only a small portion of the structure. However, most of the detonator assembly 55 shown in Fig. 2 of the drawings is substantially destroyed. At the time of subsequent reuse, all the components shown in that view must be collected and assembled as new.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US98852892A | 1992-12-10 | 1992-12-10 | |
US988528 | 1992-12-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0601880A2 true EP0601880A2 (fr) | 1994-06-15 |
EP0601880A3 EP0601880A3 (fr) | 1995-02-22 |
Family
ID=25534221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93309990A Withdrawn EP0601880A3 (fr) | 1992-12-10 | 1993-12-10 | Détonateur pour perforateur de puits avec feuille explosante. |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0601880A3 (fr) |
CA (1) | CA2111153A1 (fr) |
NO (2) | NO934507D0 (fr) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0675262A1 (fr) * | 1994-03-29 | 1995-10-04 | Services Petroliers Schlumberger | Un canon perforateur avec une pluralité de charges |
GB2297145A (en) * | 1995-01-23 | 1996-07-24 | Western Atlas Int Inc | EBW perforating gun system |
US6095258A (en) * | 1998-08-28 | 2000-08-01 | Western Atlas International, Inc. | Pressure actuated safety switch for oil well perforating |
US6148263A (en) * | 1998-10-27 | 2000-11-14 | Schlumberger Technology Corporation | Activation of well tools |
US6283227B1 (en) | 1998-10-27 | 2001-09-04 | Schlumberger Technology Corporation | Downhole activation system that assigns and retrieves identifiers |
US6385031B1 (en) | 1998-09-24 | 2002-05-07 | Schlumberger Technology Corporation | Switches for use in tools |
US6752083B1 (en) | 1998-09-24 | 2004-06-22 | Schlumberger Technology Corporation | Detonators for use with explosive devices |
US6938689B2 (en) | 1998-10-27 | 2005-09-06 | Schumberger Technology Corp. | Communicating with a tool |
US7347278B2 (en) | 1998-10-27 | 2008-03-25 | Schlumberger Technology Corporation | Secure activation of a downhole device |
EP2092161A1 (fr) * | 2006-11-27 | 2009-08-26 | Halliburton Energy Services, Inc. | Appareil et procédé pour carottage à percussion de paroi latérale utilisant un dispositif d'allumage activé par tension |
US7762331B2 (en) | 2006-12-21 | 2010-07-27 | Schlumberger Technology Corporation | Process for assembling a loading tube |
US8281718B2 (en) | 2009-12-31 | 2012-10-09 | The United States Of America As Represented By The Secretary Of The Navy | Explosive foil initiator and method of making |
WO2013125975A1 (fr) * | 2012-02-22 | 2013-08-29 | Bogdan Aleksandr Stepanovich | Capsule détonante |
WO2014179669A1 (fr) * | 2013-05-03 | 2014-11-06 | Schlumberger Canada Limited | Pistolet de perforation modulaire à cohérence améliorée |
US9464508B2 (en) | 1998-10-27 | 2016-10-11 | Schlumberger Technology Corporation | Interactive and/or secure activation of a tool |
US10077641B2 (en) | 2012-12-04 | 2018-09-18 | Schlumberger Technology Corporation | Perforating gun with integrated initiator |
US10858919B2 (en) | 2018-08-10 | 2020-12-08 | Gr Energy Services Management, Lp | Quick-locking detonation assembly of a downhole perforating tool and method of using same |
US11078763B2 (en) | 2018-08-10 | 2021-08-03 | Gr Energy Services Management, Lp | Downhole perforating tool with integrated detonation assembly and method of using same |
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 |
US11994008B2 (en) | 2018-08-10 | 2024-05-28 | Gr Energy Services Management, Lp | Loaded perforating gun with plunging charge assembly and method of using same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10267127B2 (en) * | 2015-08-25 | 2019-04-23 | Owen Oil Tools Lp | EFP detonating cord |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4762067A (en) * | 1987-11-13 | 1988-08-09 | Halliburton Company | Downhole perforating method and apparatus using secondary explosive detonators |
US4944225A (en) * | 1988-03-31 | 1990-07-31 | Halliburton Logging Services Inc. | Method and apparatus for firing exploding foil initiators over long firing lines |
-
1993
- 1993-12-09 NO NO934507D patent/NO934507D0/no unknown
- 1993-12-09 NO NO934507A patent/NO934507L/no unknown
- 1993-12-10 EP EP93309990A patent/EP0601880A3/fr not_active Withdrawn
- 1993-12-10 CA CA 2111153 patent/CA2111153A1/fr not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4762067A (en) * | 1987-11-13 | 1988-08-09 | Halliburton Company | Downhole perforating method and apparatus using secondary explosive detonators |
US4944225A (en) * | 1988-03-31 | 1990-07-31 | Halliburton Logging Services Inc. | Method and apparatus for firing exploding foil initiators over long firing lines |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5505134A (en) * | 1993-09-01 | 1996-04-09 | Schlumberger Technical Corporation | Perforating gun having a plurality of charges including a corresponding plurality of exploding foil or exploding bridgewire initiator apparatus responsive to a pulse of current for simultaneously detonating the plurality of charges |
EP0675262A1 (fr) * | 1994-03-29 | 1995-10-04 | Services Petroliers Schlumberger | Un canon perforateur avec une pluralité de charges |
GB2297145A (en) * | 1995-01-23 | 1996-07-24 | Western Atlas Int Inc | EBW perforating gun system |
GB2297145B (en) * | 1995-01-23 | 1998-10-21 | Western Atlas Int Inc | EBW perforating gun system |
US6095258A (en) * | 1998-08-28 | 2000-08-01 | Western Atlas International, Inc. | Pressure actuated safety switch for oil well perforating |
US6386108B1 (en) | 1998-09-24 | 2002-05-14 | Schlumberger Technology Corp | Initiation of explosive devices |
US6385031B1 (en) | 1998-09-24 | 2002-05-07 | Schlumberger Technology Corporation | Switches for use in tools |
US6752083B1 (en) | 1998-09-24 | 2004-06-22 | Schlumberger Technology Corporation | Detonators for use with explosive devices |
US6283227B1 (en) | 1998-10-27 | 2001-09-04 | Schlumberger Technology Corporation | Downhole activation system that assigns and retrieves identifiers |
US9464508B2 (en) | 1998-10-27 | 2016-10-11 | Schlumberger Technology Corporation | Interactive and/or secure activation of a tool |
US6604584B2 (en) | 1998-10-27 | 2003-08-12 | Schlumberger Technology Corporation | Downhole activation system |
US6938689B2 (en) | 1998-10-27 | 2005-09-06 | Schumberger Technology Corp. | Communicating with a tool |
US7347278B2 (en) | 1998-10-27 | 2008-03-25 | Schlumberger Technology Corporation | Secure activation of a downhole device |
US6148263A (en) * | 1998-10-27 | 2000-11-14 | Schlumberger Technology Corporation | Activation of well tools |
EP2092161A1 (fr) * | 2006-11-27 | 2009-08-26 | Halliburton Energy Services, Inc. | Appareil et procédé pour carottage à percussion de paroi latérale utilisant un dispositif d'allumage activé par tension |
EP2092161A4 (fr) * | 2006-11-27 | 2012-01-18 | Halliburton Energy Serv Inc | Appareil et procédé pour carottage à percussion de paroi latérale utilisant un dispositif d'allumage activé par tension |
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US8281718B2 (en) | 2009-12-31 | 2012-10-09 | The United States Of America As Represented By The Secretary Of The Navy | Explosive foil initiator and method of making |
WO2013125975A1 (fr) * | 2012-02-22 | 2013-08-29 | Bogdan Aleksandr Stepanovich | Capsule détonante |
US10077641B2 (en) | 2012-12-04 | 2018-09-18 | Schlumberger Technology Corporation | Perforating gun with integrated initiator |
WO2014179669A1 (fr) * | 2013-05-03 | 2014-11-06 | Schlumberger Canada Limited | Pistolet de perforation modulaire à cohérence améliorée |
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US11994008B2 (en) | 2018-08-10 | 2024-05-28 | Gr Energy Services Management, Lp | Loaded perforating gun with plunging charge assembly and method of using same |
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 |
Also Published As
Publication number | Publication date |
---|---|
NO934507L (no) | 1994-06-13 |
NO934507D0 (no) | 1993-12-09 |
EP0601880A3 (fr) | 1995-02-22 |
CA2111153A1 (fr) | 1994-06-11 |
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