Hazim H. Abass

Affiliate Professor, Petroleum Engineering

Hazim AbassExperience at international research centers spanning entire continents with long stays in the United States, South America and the Middle East. He was a professor at the Colorado School of Mines (2014-2018) and the director of the Fracturing Acidizing, Stimulation Technology (FAST) consortium.

As an Unconventional Resources Champion at Saudi Aramco (2001-2014), identified field technical challenges and established advanced research programs to develop effective and practical solutions in the area of waterless fracturing, sweet spots characterization, condensate banking removal, and applied geomechanics in reservoir depletion. He also investigated technical challenges related to acid fracture closure, comparing acid fracturing versus proppant fracturing in carbonate formation, the cooling effect during fracturing on resin coated proppant, oriented fracturing, and smart depletion.

Prior experience was a team leader at Halliburton’s research center in Duncan, Oklahoma (1988-1996) and PDVSA Research center in Los Teques, Venezuela (1997-2001); introduced the concept of oriented perforation for hydraulic fracturing and sand control, presented the concept of cavity completion for fracturing horizontal wells, researched the effect of fracturing coalbed methane wells, researched the use of short perforation interval and non-planar fracture propagation in fracturing horizontal wells, shale gas fracturing, and sanding tendency.

During the post graduate program at Colorado School of Mines (1981-1987), his research experience included developing the first numerical model to simulate gas hydrates in porous media. He developed the first 3-phase 1-D model to simulate experimental data. For his Ph.D. work, he and his advisor, Daniel M. Bass were the first investigators who took into account the effect of limited wellbore penetration on water coning.

Following his graduation from the University of Baghdad, he worked (1977-1979) as a petroleum engineer for the Northern Petroleum Organization in Kirkuk, Iraq. His work included training program and field assignment in well logging and well testing.


  • B.S.M.E., 1977 – University of Baghdad
  • M.S.M.E., 1984 – Colorado School of Mines
  • Ph.D., 1987 – Colorado School of Mines

International SPE Awards

  • 2012 Completion Optimization and Technology
  • Distinguished Member

Regional SPE Awards

  • 2012 Middle East Completion Optimization and Technology
  • 2008 Middle East Production and Operations