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US 2025/0215769 A1Published application
Regulating Detonation of Perforation Modules in Unbalanced Conditions
AssigneeSaudi Arabian Oil Company
InventorsAdnan B. Asif, Naresh K. Purusharthy
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Abstract
Systems and methods for perforating wellbores include comparing a signal from the least one pressure sensor with a preset pressure and, in response to determining that the signal from the least one pressure sensor is within a preset pressure range, transmitting the activation signal to a firing head.
Claims20
A bottom hole assembly for perforating wellbores, the bottom hole assembly comprising:
- a perforating tool;
- a control module comprising:
- at least one pressure sensor
- a processor electronically connected to the at least one pressure sensor;
- and
- a transmitter operable to send a signal to the perforating tool;
- wherein in response to an activation signal, the processor is operable to compare a signal from the least one pressure sensor with a preset pressure and, in response to determining that the signal from the least one pressure sensor is within a preset pressure range, transmitting the activation signal to the firing head.
4 more elements
A method for perforating a wellbore, the method comprising:
- defining a maximum allowable underbalance pressure;
- calculating a safe detonation pressure for the wellbore based on reservoir pressure and the maximum allowable underbalance pressure;
- running a bottom-hole assembly down the wellbore on a wireline, wherein the bottom hole assembly comprises a downhole detonation control module;
- receiving an activation signal at the downhole detonation control module;
- and
- in response to determining that bottom-hole pressure at the bottom-hole assembly is not less than the safe detonation pressure, transmitting the activation signal from the downhole detonation control module to a firing head of a gun assembly.
3 more elements
Dependencies are inferred from the claim text.