Dry hole and waterstoma two-purpose sound wave test probe

The utility model relates to a dual-purpose (ultra) sonic wave test probe for a dry hole and a water hole. An (ultra) sonic wave emitter and a receiver of the utility model are outside coated with an elastic capsule water jacket of which the lower part is connected with a water tank supplying pressure water for the capsule water jacket. An expansion air bag arranged in the water tank is connected with a compressed air source. The capsule water jacket is fully expanded under the action of water pressure to be appressed with a hole wall. Because of the excellent filling property of the water jacket, a transducer and the hole wall can be coupled via the water, resulting in minimal energy transfer loss. Thus, the probe ensures the good coupling, the annular transmission and annular reception characteristics of (ultra) sonic waves to realize accurate test, and is especially adapted to dry hole tests.