Other

Schlumberger Technology Corporation

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Ryan Parasram

David M Wadsworth

Rich Warner

Adam Gresswell

Nigel Prior

Robert W Tennent

Hugues Bouvier

Scott C Cook

Tamim Sawaf

Adolfo Recio

Scott Cook

The present invention is directed toward an addressable ignition stage which produces an output sufficient to detonate a secondary explosive, generally. The present invention comprises addressability and ignition functions that may be used together or separately to incorporate a high-power resistor with a thermally conductive substrate allowing for operation at high temperatures for ignition. The ignition stage is amendable to high volume production, exhibits a high degree of reliability, robustness and operational dependability for use alone or configurable into existing technology.

Addressable ignition stage for enabling a detonator/ignitor

Embodiments described herein comprise a wellbore system having a controller, one or more downhole tools, and a conveyance configured to lower the one or more downhole tools into the wellbore. The one or more control nodes are located in at least one of the downhole tools and wherein the control nodes activate a portion of the downhole tool and data is exchanged between the control node and the controller using a direct sequence spread spectrum signal.

Direct sequence spectrum signal downhole tool

Methods and related apparatus pertaining to downhole and surface telemetry, such as a method in which a telemetry system is provided with a communication path formed with an electrically conductive transport medium coupled across a plurality of downhole nodes. Such method includes operating on the communication path with a multi-drop system that provides telemetry to the downhole nodes in a wellbore, including employing modulation in a master-slave arrangement using binary differential phase shift keying or differential quadrature phase shift keying.

Telemetry system and method of operating the same

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Houston, TX, United States of America

Ryan Parasram