Abstract: A method, apparatus and system for cooling a component of a downhole tool is disclosed. The apparatus includes a first desiccant configured to adsorb a refrigerant gas. A transmitter is configured to transmit electromagnetic energy into the first desiccant to enable desorption of the refrigerant gas from the first desiccant. A condenser condenses the desorbed refrigerant gas into a liquid phase. The condensed refrigerant evaporates from a liquid phase to a gaseous phase to cool the component. A second desiccant can be used, wherein the processor is configured to operate the cooling system in a first mode of operation in which the first desiccant is in thermal communication with the component and the second desiccant is thermally isolated from the component and a second mode of operation in which the second desiccant is in thermal communication with the component and the first desiccant is thermally isolated from the component.

Abstract: An apparatus for processing signals downhole includes a carrier configured to be conveyed through a borehole penetrating an earth formation and a container disposed at the carrier and configured to carry biological material. A cultured biological neural network is disposed at the container, the neural network being capable of processing a network input signal and providing a processed network output signal. One or more electrodes are in electrical communication with the neural network, the one or more electrodes being configured to communicate the network input signal into the neural network and to communicate the network output signal out of the neural network.

Abstract: A sorption cooling apparatus for cooling a region in a downhole tool deployed on a wellbore conveyance device includes a container having an interior chamber in which a first region is formed, a liquid refrigerant residing in the interior chamber, a chamber located in a second region of the downhole tool, a compact desiccant body in the chamber, and a refrigerant passage between a first region containing the liquid refrigerant and the second region containing the compact desiccant body. The vapor generated during evaporation of the liquid refrigerant passes through the vapor passage to the compact desiccant in the second region.

Abstract: A method, apparatus and system for cooling a component of a downhole tool is disclosed. The apparatus includes a first desiccant configured to adsorb a refrigerant gas. A transmitter is configured to transmit electromagnetic energy into the first desiccant to enable desorption of the refrigerant gas from the first desiccant. A condenser condenses the desorbed refrigerant gas into a liquid phase. The condensed refrigerant evaporates from a liquid phase to a gaseous phase to cool the component. A second desiccant can be used, wherein the processor is configured to operate the cooling system in a first mode of operation in which the first desiccant is in thermal communication with the component and the second desiccant is thermally isolated from the component and a second mode of operation in which the second desiccant is in thermal communication with the component and the first desiccant is thermally isolated from the component.