Skip to main content


Johnnie Kotrla
Johnnie Kotrla
Lecturer of BoP Design
Formerly with Schlumberger
Email jekotrla [at]
Engineering Expertise:
  • Responsible for engineering of oil field equipment since 1976.

    • Drilling mud processing equipment and systems.
    • Drilling mud Logging equipment and systems.
    • Land Rig packages.
  • Specific responsibilities for subsea equipment designs since 1979.

    • Subsea BOP Stack design, analysis, testing, integration and field support (for Semi-submersible Rigs, Drillships, and Drilling Barges).
    • Offshore surface BOP Stack design and operations integration (for Platform and Jack-up Rigs).
Subsea Engineering Experience:
  • Holds 21 U.S. Patents and several related international patents.

  • World Oil Award winner, 2002, Best Drilling/Completion Solution Award.

  • Authored numerous technical presentations, magazine articles, and presented same at Industry Technical Conferences across the globe (OTC-Houston; OE-Aberdeen Scotland/Stavanger Norway; IADC/SPE Conference-New Orleans; IODP/ODP-University of Kanazawa, Japan and Carnegie Institute, Washington DC; SPE Conference-Houston; IADC Workgroup-Houston)