Traditional land seismic surveys have significant cost, timing and environmental considerations, whereas airborne surveys provide a rapid imaging solution of limited

Airborne measurements cover a larger area with less environmental impact and are much more cost-effective than land seismic surveys. (Photo courtesy of ARKeX)
environmental impact, expense and logistic considerations. Even where land seismic surveys have been performed, integration of ARKeX data with existing 2-D or 3-D seismic data provides an improved geologic understanding, especially in areas where the geology inhibits clear seismic imaging.

The ARKeX technology solution incorporates gravity gradiometry, magnetic gradiometry and digital terrain mapping (LIDAR). Integrating data from these components results in a valuable exploration dataset that provides regional overview through to prospect evaluation.

Earlier this year ARKeX commissioned a study of senior exploration and production professionals which revealed some interesting points: industry awareness of the value of gravity gradiometry is increasing, and the technology is now considered a significant alternative to other imaging techniques, especially in regions where access is difficult. In some situations, the study revealed that exploration companies believe airborne gravity gradiometry (AGG) to be suitable for screening a greater area of terrain more effectively than seismic data, and for a lower cost; in other environments the industry considers AGG to be technology that complements seismic data. This all adds up to a shorter exploration to production time cycle.

ARKeX clients have been using the surveys for a variety of purposes, including both large regional studies and prospect evaluation.

ARKeX is also developing its proprietary technology, the Exploration Gravity Gradiometer (EGG). The EGG is a very different instrument than the Lockheed FTG and is designed to achieve an order of magnitude improvement in sensitivity and resolution. A key step on the road to the development of the EGG has been recently achieved with the final testing of the stabilized platform.

The platform is a critical component of any airborne gravity gradiometer, maintaining a stable environment upon which the gravity gradiometer can operate inside an aircraft. The new platform includes a sophisticated and innovative combination of accelerometers, gyros, torque motors and control systems to maintain the required stability at all stages of survey flying.

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