Patent EP0154532A2 successfully refreshed from Google Patents.
EP0154532A2
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EP
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High explosive devices for use in wells and methods of detonating them
Assignee: Halliburton Co
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Filing: 1985-03-01
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Granted: —
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Expires: 2005-03-01
Abstract
Abstract Methods and apparatus are provided for detonating high explosive devices (198) downhole in a well. A high explosive device includes a detonating cord (200) having a first end and a second end. A first device (196) is provided for initiating a detonation of a detonating cord at its first end and a second device (10) is provided for initiating a detonation of the detonating cord at its second end. Thus is the first initiator device fails to initiate detonation of the cord, there is the possibility that the second initiator device will be successful. Furthermore, if only part of the cord is detonated in response to the first initiator device, the second initiator device can be used to detonate the cord from its other end.
Inventors
- 👤 Edward A. Colle Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:47
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/1185; E21B43/11852; E21B43/11855
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A method of detonating a high explosive device (198) downhole in a well, the high explosive device including means (200) for transmitting a detonation between two ends thereof and wherein an initiator means (10', 196) is positioned to initiate a detonation at one end of the transmitting means and wherein a stimulus is applied to the initiator means in an attempt to initiate a detonation of said one end of the transmitting means to be transmitted to the other end thereof, characterised by the use of a further initiator means (10) positioned to initiate a detonation of the transmitting means at the other end thereof, and the step of applying a further stimulus to the further initiator means in an attempt to initiate a detonation of said other end of the transmitting means.
Claim 2
Independent Claim
133 words
A method of detonating a high explosive device (198) downhole in a well, the high explosive device including means (200) for transmitting a detonation between two ends thereof and wherein an initiator means (10', 196) is positioned to initiate a detonation at one end of the transmitting means and wherein a stimulus is applied to the initiator means in an attempt to initiate a detonation of said one end of the transmitting means to be transmitted to the other end thereof, characterised by the use of a further initiator means (10) positioned to initiate a detonation of the transmitting means at the other end thereof, and the step of applying a further stimulus to the further initiator means in an attempt to initiate a detonation of said other end of the transmitting means.
Claim 3
Dependent Claim
114 words
The method of claim 1, wherein the high explosive device includes at least one high explosive well perforating means adapted to be detonated by the transmitting means and mounted in a perforating gun (198) suspended from tubing (192), the first-mentioned initiator means comprising a weight actuated initiator means (196) and the step of applying a stimulus to that initiator means comprising the step of dropping a weight downwardly through the tubing to impact actuated initiatot means, characterised by the use of a pressure actuated initiator means (10) as the further initiator means and in that the step of applying the further stimulus comprises the step of applying pressure to the pressure actuated initiator means.
Claim 4
Dependent Claim
101 words
The method of claim 1, wherein the high explosive device includes at least one high explosive well perforating means (198) adapted to be detonated by the transmitting means, the first-mentioned initiator means comprising a pressure actuated initiator means (10 1 ) and the step of applying a stimulus to that initiator means comprising the step of applying pressure to the initiator means, characterised by the use of a pressure actuated initiator means (10) as the further initiator means and in that the step of applying the further stimulus comprises the step of applying pressure to the further pressure actuated initiator means.
Claim 5
Independent Claim
58 words
The method of any preceding claim wherein the transmitting means includes a detonating cord (200) the first-mentioned initiator means (10', 196) being positioned to initiate a detonation of the detonating cord at one end thereof characterised in that the further initiator means (10) is positioned to indicate a detonation of the detonating cord at the other end thereof.
Claim 6
Dependent Claim
56 words
A high explosive device (198) adapted for use in a well, including means (200) for transmitting a detonation between two ends thereof; and means (196, 10') for initiating a detonation of the transmitting means at one of its ends; characterised by further means (10) for initiating a detonation of the transmitting means at its other end.
Claim 7
Dependent Claim
56 words
A high explosive device (198) adapted for use in a well, including means (200) for transmitting a detonation between two ends thereof; and means (196, 10') for initiating a detonation of the transmitting means at one of its ends; characterised by further means (10) for initiating a detonation of the transmitting means at its other end.
Claim 8
Dependent Claim
16 words
The device of claim 5, wherein the high explosive device comprises a well perforating means (l98).
Claim 9
Dependent Claim
40 words
The device of claim 6, wherein the perforating (192) in a borehole, and the first-mentioned initiator means comprises weight actuated initiator means (196) adapted to be actuated by a weight dropped through tubing when the perforating means is suspended therefrom.
Claim 10
Dependent Claim
18 words
The device of claim 5 or 6 wherein the first-mentioned initiator means comprises pressure actuable initiator means (10').
Claim 11
Independent Claim
22 words
The device of any of claims 5 to 8 characterised in that the further initiator means comprises pressure actuable initiator means (10').
Claim 12
Independent Claim
58 words
The device of any of claims 5 to 9 wherein the transmitting means comprises a detonating cord (200), the first-mentioned initiator means being arranged for initiating a detonation of the detonating cord at one end thereof; characterised in that the further initiator means is arranged for initiating a detonation of the detonating cord at the other end thereof.
References Cited (Backward Citations)
No citation records indexed.
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