Safety system for autonomous downhole tool

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United States of America Patent

PATENT NO 9903192
SERIAL NO

14005166

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Importance

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Abstract

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A tool assembly for performing a wellbore operation including an actuatable tool, a location device, and on-board controller are together dimensioned and arranged to be deployed in the wellbore as an autonomous unit. The actuatable tool, such as a perforating gun having associated charges, perforates a wellbore along a selected zone of interest. The location device, such as casing collar locator, senses the location of the actuatable tool based on a physical signature provided along the wellbore. The on-board controller or micro-processor is configured to send an activation signal to the actuatable tool when the location device has recognized a selected location of the tool based on the physical signature. The tool assembly further includes a multi-gate safety system. The safety system prevents premature activation of the actuatable tool.

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Patent Owner(s)

Patent OwnerAddress
EXXONMOBIL UPSTREAM RESEARCH COMPANYSPRING TX

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Angeles, Boza Renzo M Houston, US 13 785
Entchev, Pavlin B Moscow, RU 36 1260
Gahr, Jason Z Columbus, US 3 306
King, George R Richmond, US 23 510
Sauermilch, Peter W Sugar Land, US 3 308
Stanton, Robert C Cypress, US 2 305
Tolman, Randy C Spring, US 65 2846
Winemiller, Elton Katy, US 2 305

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