Actuation of downhole devices

A tool for use in a wellbore, comprising:

• a sampler device including one or more ports, a flow control device to control flow through the one or more ports, and an activating mechanism to control the flow control device;
• an assembly including a rupture disk mechanism and a fluid path between the rupture disk mechanism and the activating mechanism, the rupture disk mechanism adapted to block communication of fluid pressure to the activating mechanism;
• and
• a second sampler device including a second activating mechanism, the assembly further including a second rupture disk mechanism and a second fluid path between the second rupture disk mechanism and the second activating mechanism.

A tool for use in a wellbore, comprising:

• a plurality of devices including a first device and a second device, each including an activating mechanism;
• a first port adapted to receive fluid pressure;
• a rupture disk assembly between the first port and the activating mechanism of the first device;
• and
• a second port adapted to receive a pressure pulse signal,
• the activating mechanism of the second device in communication with the second port and actuatable by the pressure pulse signal.

A tool for use in a wellbore, comprising:

• a device including an activating mechanism;
• a timer coupled to the activating mechanism;
• and
• a port assembly adapted to block fluid pressure from the timer to maintain the timer deactivated, the port assembly including a rupture disk that is capable of being ruptured by a fluid pressure greater than a predetermined level to allow communication of fluid pressure to start the timer.

A method of operating sampler devices for use in a wellbore, comprising:

• lowering the sampler devices on a tool string into the wellbore;
• applying a first pressure into the wellbore to rupture a first rupture disk assembly;
• providing the first pressure to a first activating mechanism of a first flow control device in a first sampler device, the first flow control device blocking fluid from entering through one or more ports in the first sampler device when closed, the first pressure activating the first activating mechanism to open the first flow control device;
• applying a second, different pressure into the wellbore to rupture a second rupture assembly;
• and
• providing the second pressure to a second activating mechanism of a second flow control device in a second sampler device, the second flow control device blocking fluid from entering through one or more ports in the second sampler device when closed, the second pressure activating the second activating mechanism to open the second flow control device.