Seismic response of geophones attached to tubing

Past experiments have shown that seismic data collected from rigidly interconnected geophones affixed to square tubing yields the highest‐quality reflection information when compared to seismic data acquired from geophones attached to other, variously shaped steel media. The purpose of the experiments discussed here was to address several different aspects of the square tubing that may have positively affected the quality of the recorded seismic data. Experiments involved altering the material of the rigid medium to which the geophones were attached, engineering a new geophone‐spike design to allow for the receiver and spike to be in contact through the steel media, and devising experiments to determine if the square tubing acts as an organ pipe. Several conclusions have been made from experimental results: first, it was determined that the rigid material upon which the receivers were affixed had a minor effect on the recorded airwave and reflections; second, the new geophone‐spike design did not affect resulting seismic data, which indicates the original design (disconnected geophone and spike) was not responsible for the decreased airwave coherency; third, there was insufficient evidence to support the organ pipe hypothesis at this time; finally, the square tubing is still the best rigid medium to utilize in automating the planting of geophones because of the ease in which it can be altered, its rigidity, and the high quality seismic data acquired from the mounted receivers.