The idea of nanotechnology if applied in any of the technological fields will put LWD and MWD as outdated technology and can prove to be a boon for the next technical revolution. Already postulated to be effective in medical science such as destruction of disease causing bacteria or drug targeting, the nanorobots could be used for logging purpose by circulating these nanorobots, which have nonomotors being driven by the ions in the mud or by mud circulation system. Expensive wireline tools are conventionally used in all types of wells to find important formation properties. I have come up with an idea of nanorobots for oil field logging. Nanorobots can eliminate use of these tools, entirely and small particles of order of nanocentimeter can be put in the drilling mud to obtain useful information. These robots equipped with nanosensors could be used to measure various properties of formation, borehole environment, mud properties and many more. Nanorobots can be constructed in a manner so that they possess sensors, on-board driving mechanism and microcomputer as well as interface mechanism from where it can send instructions to microcomputers from surface computers. Transmission to surface is by means of electromagnetic waves and detected by means of probes on surface. They facilitate wire-less communication and real time surveillance. Thus in comparison to the conventional logging they can save rig hours and can be more accurate and precise as compared to presently used techniques like logging while drilling and measurement while drilling. They can move with circulating mud or they can be made to propel or stop by the on-board computer instructions depending upon the measurement to be taken. They will also be able to invade the formation and get important petrophysical parameters.
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