John P Castagna

Title: John P. Castagna: Innovator in Formation Wave Measurement

Introduction

John P. Castagna is a notable inventor based in Plano, TX (US), recognized for his contributions to the field of geophysical measurements. He has developed innovative methods and apparatuses that enhance the understanding of formation compressional and shear wave velocities. His work is particularly significant in the oil and gas industry, where accurate measurements are crucial for resource extraction.

Latest Patents

John P. Castagna holds a patent for a "Method and apparatus for measuring formation compression and shear wave." This invention involves a downhole tool equipped with an attenuation chamber situated between a transmitter and a receiver. The design includes multiple receivers spaced from the transducer, allowing for the discrimination of critical angles through the amplitude of reflected compressional waves. This method effectively determines the formation compressional and shear wave velocities. The patent also describes preferred embodiments where connectors link the receivers to a recorder for capturing gated time interval signals. Additionally, a microprocessor is utilized to calculate density from the compressional velocity and the normal incidence reflection coefficient, displaying the results as a function of depth.

Career Highlights

John P. Castagna is associated with the Atlantic Richfield Company, where he applies his expertise in geophysical measurements. His work has significantly contributed to advancements in the field, particularly in the development of tools that improve the accuracy of wave velocity measurements.

Collaborations

One of his notable collaborators is Robert W. Siegfried, II. Together, they have worked on projects that enhance the understanding of wave propagation in geological formations.

Conclusion

John P. Castagna's innovative work in measuring formation compressional and shear wave velocities has made a lasting impact on the geophysical industry. His contributions continue to influence the methods used in resource exploration and extraction.