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US 12,571,304 B1Granted
Downhole safety switch and communication protocol
AssigneeAcuity Technical Designs, LLC
InventorsRoger Jackson, Brian Keith Roper, Todd K. Roper
Life of this patent
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Abstract
A system includes a surface device, preferably positioned on a surface, a downhole device, and a wireline communications system. A downlink communication between the surface device and the downhole device occurs via Hopped Frequency Shift Keying (HFSK) voltage-modulated signals. An optional uplink communication between the downhole device and the surface device may occur via Frequency Shift Keying (FSK) current-modulated signals. The downhole device may comprise an addressable switch.
Claims11
A system comprising:
- a surface device;
- a first downhole device;
- a second downhole device;
- and
- a wireline communication system including an addressable switch coupled to the first downhole device, wherein the addressable switch comprises a first unique identification (ID) and a second unique ID;
- wherein the addressable switch is configured to communicate the first unique ID to the surface device in response to a signal from the surface device and is configured to transmit the second unique ID in response to the signal from the surface device;
- and
- the addressable switch is configured as a safety circuitry to arm a first detonator of the first downhole device and a second detonator of the second downhole device, wherein the first unique ID is associated with the first detonator and the second unique ID is associated with the second detonator.
5 more elements
A system comprising:
- a surface device;
- a first downhole device;
- a second downhole device configured to be located downstream from the first downhole device;
- and
- a wireline communication system including an addressable switch coupled to the first downhole device, wherein the addressable switch comprises a downstream switch and a detonate switch;
- wherein, in response to receiving a first command signal from the surface device, the downstream switch is configured to send a first signal to the second downhole device to fire a first detonator of the second downhole device, and, in response to receiving a second command signal from the surface device, the detonate switch is configured to send a second signal to fire a second detonator of the first downhole device.
3 more elements
Dependencies are inferred from the claim text.