Patent ID: 11952863
Assignee: EXPRO NORTH SEA LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. An apparatus for use in a downhole tool, the downhole tool having a hydraulically functioning element comprising a hydraulic piston housed in a piston housing, wherein the hydraulic piston is configured to move within the housing by hydraulic pressure, the apparatus comprising:
a membrane configured to isolate an internal environment of the downhole tool from one or more further environments, internal and/or external to the downhole tool; and
an electrical element configured to conduct an electrical current;
wherein the electrical element is positioned with respect to the membrane such that energy generated by the electrical current passing through the electrical element is incident on the membrane; and
wherein the membrane is configured to be weakened and/or ruptured when the energy is incident thereon to allow fluid communication between the internal environment and the further environment; and
wherein the apparatus is configured to be disposed relative to the downhole tool such that upon weakening and/or rupturing of the membrane, a fluid is released into the internal environment and at least partially operates the hydraulically functioning element.