About Us

Based in Houston, Sentry Technologies is an automation company founded and staffed by people who understand oil and gas production. Our founders and team members have walked in a producers’ boots.

Founders Kurt von Plonski and Mark Semmelbeck have more than 70 years of experience in petroleum engineering and are founding partners in Battlecat Oil & Gas and Escondido Resources. STI’s team understands exactly what the customer requires, the service they expect, and the importance of fast, reliable data.

Meet Our Team

With decades of experience in the oil patch, our team understands what oil and gas producers need from monitoring equipment. We work directly with you to understand your objectives and design systems that will increase revenue without additional staff time.

Call us at 281.561.0008 or use our contact form for a free consultation.

Kurt von Plonski

  • Founding Partner and Managing Director, Battlecat Oil & Gas, LLC
  • Founding Partner and Vice President, Operations, Escondido Resources II
  • 28 years petroleum engineering experience, primarily in production engineering and optimization
  • Registered Professional Engineer

Dr. Mark Semmelbeck

  • Founding Partner and Managing Director, Battlecat Oil & Gas, LLC
  • Founding Partner and Vice President, Engineering, Escondido Resources II
  • 28 years in petroleum engineering, primarily in reservoir engineering and stimulation

Mike Jeffers

  • With Sentry since the company was founded in 1992
  • Extensive experience in product development, product application and systems design
  • Strong customer support background

David Armstrong

  • 40 years experience in production, workover and completion supervision
  • 20 years experience in automation installations and artificial lift optimization

The goal is simple. Increase revenue by decreasing downtime and increasing production without increasing lifting cost, or requiring additional staff.

This is how we measure our success.

From tubing and casing pressure, tank levels and temperature, to the status of salt water pumps and shut-in systems, if it’s on an oilfield location, we can monitor and measure it. We work with you to determine your needs and objectives, and Sentry’s custom solutions cover the full range of oilfield functionality. Learn more about Sentry’s product line and custom solutions here.

Contact us for a free consultation