About Us

Christof Stork, Chief Scientist

Christof Stork has 20+ years of experience in the seismic field and a track record of entrepreneurial successes with various segments of the industry. He was one of the first people to develop MVA tomography for depth migration (demonstrating the need for and proposing methods for stabilizing the inversion), he was one of the early developers of the ProMAX seismic data processing system, he built one of the first maximum energy travel time solvers for Kirchhoff depth migration, and he was one of the first to develop WEM migration on massive PC clusters. Christof has been involved in 3 previous entrepreneurial ventures, of which 2 1/2 were successful. To see Christof's recent work on interferometry, click here. Contact Christof by e-mail at cstork @ tierrageo.com.

Dave Diller, President

Dave Diller has 20+ years of oil and gas industry experience, primarily with seismic processing and seismic processing software. Dave spent 5 years as a seismic processor and geophysical programmer at Union Pacific Resources. This was folllowed by 6 years at Advance Geophysical as the chief development engineer, where Dave served as the architect and primary developer of ProMAX, the industry's leading seismic processing system. Dave spent 2 years as founder and president of Encore Software, a company that developed and marketed seismic data compression software. For 11 years Dave was at Landmark Graphics, where he served various roles including program manager, product manager, development manager, and architect of the Well-Seismic Fusion and SeisSpace products. Dave is a frequent contributor to the open source JavaSeis project. Dave coined (and lives by) the truism "Thick skin is the first prerequisite for software development". Contact Dave by e-mail at ddiller @ tierrageo.com.

Denny O'Brien, Director of Marketing and Sales

Denny O'Brien has 30+ years of experience in the oil industry. He started his work in Calgary as an exploration geophysicist for Amoco. He moved to the service sector of the industry in 1972, working in processing and then as President of Grant Geophysical Canada. He moved to Denver in 1982 as Senior VP, in charge of Grant's operations in Canada and the Rocky Mountains. He joined Advance Geophysical in 1988 as President, where he guided the company through growth in sales and revenue of over 1,000% in 5 years. Contact Denny by e-mail at dobrien @ tierrageo.com.