Patent ID: 8689929

Claim:
A system for downhole seismic testing, comprising: a. an excitation device comprising: an excitation hammer; a holding arm connected at one end thereof to the excitation hammer to allow the excitation hammer to rotate about the other end thereof; a support post having the other end of the holding arm rotatably coupled to an upper end thereof to support the excitation hammer and the holding arm at a certain height, the support post being formed at a lower end thereof with a securing section detachably inserted into a groove for the support post formed on an upper side of an excitation source such that the support post, the holding arm, the excitation hammer and the excitation source can be separated from each other; and an excitation source which is configured to allow the support post to stand upright on the upper side thereof and generates a seismic wave when struck by the rotated excitation hammer; and b. a boundary block made of a stretchable material, wherein the boundary block is disposed on a vertical plane of an installation space excavated to install the excitation device.