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Piezoelectrics are widely used in the oil and gas industries to perform many valuable functions from low-frequency seismic surveys to design of logging-while-drilling (LWD) ultrasound tools and pressure sensors. PZFlex aids in developing the tools, positioning transducers, and analyzing the data they record during performance. Downhole tools, for example, are inserted inside the hole to check casings for corrosion or damage and aid in remedial work that prevents their rupture. Downhole tools are also used to assess the quality of the cement in the cased hole, measure its porosity, determine the targeted rock’s mechanical properties and lithology, and detect fractures. PZFlex is also used for designing transducers used in ultrasonic oil prospecting. In this application, air guns are positioned so that their shock waves rebound off targeted rock strata on the ocean floor. Arrays of sensitive acoustic receivers are either towed behind seismic survey vessels or positioned in pre-bored inspection wells on LWD wireline tools.

PZFlex supports the design and operation of a particularly useful LWD tool that employs surface air guns to perform real-time checkshots. They are minimally disruptive to drilling despite the addition of a 90-foot stand of drill pipe. Seismic waves emitted by the guns are aimed at downhole receivers that transmit their arrival time back to the surface. Knowing the correct time-to-depth conversion for the seismic section helps the driller plan a targeted trajectory through the well and avoid high-pressure zones. The alternative of leaving the well and running a wireline checkshot would add significant rig time and expense.