Ph.D. University of Houston
M.S. University of Technology - Baghdad
B.S. University of Technology - Baghdad
Dr. Ahmed Salih Mohammed received his Ph.D. in Civil Engineering/Geotechnical Engineering at the Civil and Environmental Engineering Department from the University of Houston in December 2014 with GPA of 3.75/4. He was also a postdoctoral fellow researcher in Civil Engineering/Geo-Material Engineering at the Civil and Environmental Engineering Department at the University of Houston.
He has researched the areas of petroleum engineering, materials engineering, and geotechnical engineering. His cutting edge research was in the areas of development of hydraulic fracturing and smart cements for oil well application related to preventing disaster in the Gulf of Mexico. He also developed smart drilling muds for application in the petroleum and geotechnical fields. He integrated advances in the areas of nanotechnology, polymer technology, and material technology to modify smart cement, drilling muds, and expansive clays. His research in geotechnical engineering was on controlling the expansion in clay causing major infrastructural damage in many parts of the U.S., including Houston, Dallas, and Denver, using polymers. The polymer treatment method developed by Dr. Mohammed is an outstanding experiment -- a talent that is very difficult find these days (adviser said). His research also focused on experimental studies and mathematical modeling of the performance of the smart cement, smart drilling mud, and polymer treated expansive clay.
Dr. Mohammed has developed several mathematical models to predict the behavior of smart cement, smart drilling mud, and polymer treated expansive clays. He developed models to predict the curing, rheological properties, and piezoresistive behavior of smart cements. He also developed a new model to predict the rheological behavior of drilling muds. He has developed constitutive models to predict the behavior of polymer treated expansive clays. His work has resulted in 45 journal publications and conference proceedings. The refereed journal publications are in Petroleum Science, Engineering, Egyptian Petroleum Journal Geotechnical and Geological Engineering and ASTM Testing and Evaluation. His research was also presented at the Offshore Technology Conferences in 2014, 2015, 2016 and 2017 where there were about 100,000 attendees from around the world. His research was also presented at the American Association of Drilling Engineers, Center for Innovative Grouting Materials and Technology and Texas Hurricane Center of Innovative Technology Conferences. In addition to the above-mentioned research, Dr. Mohammed was one of the Teaching Assistants in the Department of Civil and Environmental Engineering Department at the University of Houston from 2011 to 2015.
PUBLICATIONS (JOURNAL)
J Build Rehabil (2019) 4: 19. https://doi.org/10.1007/s41024-019-0058-4.
Mohammed, A.S. and Salih (2018). Testing and Modeling the Effect of Confined Water Pressure on the Compression and Flexural Strengths of Pre-saturated Gypsum Rock. Geotechnical Research.
Mohammed, A. S. (2018). Vipulanandan models to predict the electrical resistivity, rheological properties and compressive stress-strain behavior of oil well cement modified with silica nanoparticles. Egyptian Journal of Petroleum.
Mohammed, A., & Mahmood, W. Statistical Variations and New Correlation Models to Predict the Mechanical Behavior and Ultimate Shear Strength of Gypsum Rock. Open Engineering, 8(1), 213-226.
Mohammed, A.S. (2018). Vipulanandan Models to Predict the Mechanical Properties, Fracture Toughness, Pulse Velocity and Ultimate Shear Strength of Shale Rocks. Geotechnical and Geological Engineering.
Mohammed, A. and Wael M (2018). Vipulanandan failure models to predict the tensile strength, compressive modulus, fracture toughness and ultimate shear strength of calcium rocks.” International Journal of Geotechnical Engineering, https://doi.org/10.1080/
Vipulanandan, C., and Mohammed, A. (2018). Smart Cement Compressive Piezoresistive, Stress-Strain, and Strength Behavior with Nanosilica Modification.” ASTM, Journal of Testing and Evaluation. (https://doi.org/10.1520/
Mohammed, A.S. (2017). “Property Correlations and Statistical Variations in the Geotechnical Properties of (CH) Clay Soils, Geotechnical and Geological Engineering, DOI 10.1007/s10706-017-0325-6.
Salih, N. and Mohammed, A.S. (2017). Characterization and modeling of long-term stress-strain behavior of water confined pre-saturated gypsum rock in Kurdistan Region, Iraq. Rock mechanics and geotechnical engineering.
Mohammed, A.S. (2017). Vipulanandan model for the rheological properties with ultimate shear stress of oil well cement modified with nanoclay. Egyptian Journal of Petroleum.
Mohammed, A.S. (2017). Electrical resistivity and rheological properties of sensing bentonite drilling muds modified with lightweight polymer. Egyptian Journal of Petroleum. 10.1016/j.ejpe.2017.01.002.
Vipulanandan, C., and Mohammed, A. (2017). Rheological Properties of Piezoresistive Smart Cement Slurry Modified With Iron-Oxide Nanoparticles for Oil-Well” Applications.” ASTM, Journal of testing and Evaluation. Doi: 10.1520/JTE20150443.
Mohammed, A.S. (2016). Effect of Temperature on the Rheological Properties with Shear Stress Limit of Iron Oxide Nanoparticle Modified Bentonite Drilling Muds. Egyptian Journal of Petroleum.
Vipulanandan, C., and Mohammed, A. (2016). Rheological properties of piezoresistive smart cement slurry modified with Iron oxide nanoparticles for oil well applications.” ASTM, Journal of testing and Evaluation.
Vipulanandan, C., and Mohammed, A. (2015). Smart cement modified with iron oxide nanoparticles to enhance the piezoresistive behavior and compressive strength for oil well applications.” Journal of Smart Materials and Structures, 24, 1-11.
Vipulanandan, C., and Mohammed, A. (2015). Smart cement rheological and piezoresistive behavior for oil well applications.” Petroleum Science and Engineering, 135, 50–58.
Vipulanandan, C., and Mohammed, A. (2015). XRD and TGA, Swelling and Compacted Properties of Polymer Treated Sulfate Contaminated CL Soil.” ASTM, Journal of testing and Evaluation.
Mohammed, A. and Vipulanandan, C. (2015). “Testing and Modeling the Short - Term Behavior of Lime and Fly Ash Treated Sulfate Contaminated CL Soil, Geotechnical and Geological Engineering, 32, 71-83.
Vipulanandan, C. and Mohammed, A. (2015). “Effect of nanoclay on the electrical resistivity and rheological properties of smart and sensing bentonite drilling muds.” Petroleum Science and Engineering, doi:10.1016/j.petrol.2015.03.020.
Mohammed, A. and Vipulanandan, C. (2014). “Compressive and tensile behavior of polymer treated sulfate contaminated CL soil, Geotechnical and Geological Engineering, 32, 71-83.
Vipulanandan, C. and Mohammed, A. (2014). “Hyperbolic rheological model with shear stress limit for acrylamide polymer modified bentonite drilling muds.” Petroleum Science and Engineering, 122, 38–47.
Warzer Qadir, Kawan Ghafor, and Ahmed Mohammed (2019). “Modeling the rheological properties with shear stress limit and compressive strength of ordinary Portland cement modified with polymers. J Build Rehabil.
Warzer Qadir, Kawan Ghafor, and Ahmed Mohammed (2019). Regression analysis and Vipulanandan model to quantify the effect of polymers on the plastic and hardened properties with the tensile bonding strength of the cement mortar. Results in Materials https://doi.org/10.1016/j.rinma.2019.100011
Burhan, L., Ghafor, K. & Mohammed, A. Modeling the effect of silica fume on the compressive, tensile strengths and durability of NSC and HSC in various strength ranges
Burhan, L., Ghafor, K., & Mohammed, A. (2019). Testing and Modeling the Young Age Compressive Strength for High Workability Concrete Modified With PCE Polymers. Results in Materials, 100004.
Wael Mahmood, Ahmed Mohammed & Saman HamaHussein (2019):Predicting mechanical properties and ultimate shear strength of gypsum, limestone and sandstone rocks using Vipulanandan models, Geomechanics and Geoengineering, DOI:10.1080/17486025.2019.1632494
Warzer Qadir, Kawan Ghafor, and Ahmed Mohammed (2019). Characterizing and Modeling the Mechanical Properties of the Cement Mortar Modified with Fly Ash for Various Water-to-Cement Ratios and Curing Times. Advances in Civil Engineering Volume 2019, Article ID 7013908, 11 pages.
Mahmood, W & Mohammed, A. (2019). New Vipulanandan p-q model for particle size distribution and groutability limits for sandy- soils. ASTM testing and evaluation Journal, https://doi.org/10.1520/JTE20180606. ISSN 0090-3973.
Vipulanandan, C. and Mohammed, A., (2019) “Magnetic Field Strength and Temperature Effects on the Behavior of Oil Well Cement Slurry Modified with Iron Oxide Nanoparticles and Quantified with Vipulanandan Models,” Journal of Testing and Evaluation.
Mohammed, A., Salih, A., and Raof, H., (2018) "Vipulanandan Constitutive Models to Predict the Rheological Properties and Stress–Strain Behavior of Cement Grouts Modified with Metakaolin," Journal of Testing and Evaluation, https://doi.org/10.1520/JTE20180271. ISSN 0090-3973.
PUBLICATIONS (CONFERENCE)
Vipulanandan, C. and Mohammed, A. 2017. Smart Cement Modified with Laponite for Real-Time Monitoring of Oil Well Cementing Applications. AADE-17-NTCE-126. p11.
Vipulanandan, C., Mohammed, A., R. G. Samuel. 2017. Smart Bentonite Drilling Muds Modified with Iron Oxide Nanoparticles and Characterized Based on the Electrical Resistivity and Rheological Properties with Varying Magnetic Field Strengths and Temperatures. Offshore Technology Conference. OTC-27626-MS. p.17.
Vipulanandan, C., Mohammed, A., 2016. Smart cement modified with nano silica for real-time monitoring of oil well-cementing applications. Offshore Technology Conference. OTC-27097-MS. p.15.
Vipulanandan, C., Mohammed, A., 2016. Nanoclay modified drilling muds for HPHT applications. AADE-16-FTCE-85. p11.
Vipulanandan, C., Mohammed, A., 2016. Field Test for Real-Time Monitoring of Piezoresistive Smart Cement to Verify the Cementing Operations. Offshore Technology Conference. OTC-27060-MS. p11.
C. Vipulanandan, and Mohammed, A. (2015).” Nanoparticle Modified Smart Oil Well Cement for Monitoring Cementing Applications.” American Association of Drilling Engineers, AADE-15-NTCE-06.
C. Vipulanandan, and Mohammed, A. (2015).” Hydraulic Fracturing Fluid Modified with Nanosilica Proppant and Salt Water for Shale Rocks.” American Association of Drilling Engineers, AADE-15-NTCE-38.
C. Vipulanandan, R. Krishnamoorti and A. Mohammed, CIGMAT-University of Houston (2015).” Iron Nanoparticle Modified Smart Cement for Real-Time Monitoring of Ultra-Deepwater Oil Well Cementing Applications”. Offshore Technology Conference, OTC 25100-MS.
C. Vipulanandan, B. Basirat, and A. S. Mohammed. (2014).” New Kinetic Model to Characterize the Filter Cake Formation and Fluid Loss in HPHT Process. Offshore Technology Conference, OTC 25100-MS.
Vipulanandan, C. and Mohammed, A. (2014). Characterizing the Hydraulic Fracturing Fluid Modified with Nano Silica Proppant.” American Association of Drilling Engineers, AADE-14-FTCE-39.
Vipulanandan, C. and Mohammed, A. (2013).” characterizing the behavior of polymer and lime-treated sulfate contaminated cl soil” CIGMAT-2013 Conference & Exhibition.
Vipulanandan, C. and Mohammed, A. (2012)” Characterizing the Behavior of Sulfate Soil” ASCE Geotechnical Conference.
Khalid, A. and Mohammed, A. (2004)” Assessment of The Efficiency of The Treated Gypseous Soil Blanket in Controlling the Behavior of Footings Erected on Gypseous Soils. (Field Study” International Conference on Geotechnical Engineering, Sharjah - UAE.
Ahmed S. Mohammed and C. Vipulanandan (2014). “Effect of Calcium Sulfate Contamination on the Resistivity and Rheological Properties of Bentonite Drilling Mud.” THC-IT-2014 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2014). “Modeling the Effect of Nanoclay on the Fluid Loss of Drilling Mud.” CIGMAT-2014 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2014). “Effect of Temperature on the Transport Properties of Hydraulic Fracturing Fluid through Fractured Sandstone.” CIGMAT-2014 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2013). “Effect of Oil Contamination and Temperature on the Resistivity of Drilling Mud.” THC-IT-2013 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2013). “Range of Rheological Properties for Bentonite Drilling Muds.” CIGMAT-2013 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2012). “Permeability of Polymer Modified Sulfate Contaminated CL Soil.” THC-IT-2012 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2012). “Behavior of Polymer Modified Expansive CH Soil.” CIGMAT-2012 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2012). “Characterizing the Behavior of Sulfate Contaminated CL Soil.” CIGMAT-2012 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2011). “Suction Pressure -Water Content Relationship for a Laboratory Compacted MH Soil.” CIGMAT-2011 Conference & Exhibition.
Ahmed S. Mohammed and C. Vipulanandan (2011). “Behavior of Oil Contaminated CL Soil.” THC-IT-2011 Conference & Exhibition.
Vipulanandan, C., Mohammed, A., A. S. Ganpatye. 2018. Smart Cement Performance Enhancement with NanoAl2O3for Real-Time Monitoring Applications Using Vipulanandan Models. Offshore Technology Conference. OTC-28880-MS. p.15. (https://www.onepetro.org/
Vipulanandan, C., Mohammed, A., R. G. Samuel. 2018. Fluid Loss Control in Smart Bentonite Drilling Mud Modified with Nanoclay and Quantified with Vipulanandan Fluid Loss Model. Offshore Technology Conference. OTC-28947-MS. p.17. (https://doi.org/10.4043/
Burhan, L., Ghafor, K. & Mohammed A. “Testing and Evaluation of Flowability, Viscosity and Long-Term Compressive Strength of Cement Modified with Polymeric Admixture WR Superplasticizer. 4th internal conference, Turky 2019.
Burhan, L., Ghafor, K. & Mohammed A. “Testing and Evaluation of Flowability, Viscosity and Long-Term Compressive Strength of Cement Modified with WR Polymers.. 4th internal conference, Turky 2019.
REVIEWER ACTIVITIES
Peer-Review committee member, Department of Engineering, American University of Sulaimani, Kurdistan – Iraq 2018-2019.
Faculty Senate Engineering Department, American University of Sulaimani, Kurdistan – Iraq 2018-2019.
Reviewer in Energy and Power Engineering Journal David Publishing Company, Erbil Polytechnic University, Kurdistan, Iraq, Composites Part B Journal, Elsevier Publishing Company, Open Engineering Journal, Journal of Materials and Engineering Structures, Geomechanics and Geoengineering: An International Journal, Arabian Journal of Geosciences, Petroleum and Gas Engineering, Journal of Construction & Building Materials, Journal of Environmental Geotechnics, Journal of Petroleum Science and Engineering, Journal of Geomatics, Natural Hazards and Risk, Journal of Geotechnique Letters, Journal of Pipeline Systems - Engineering and Practice ASCE, Engineering Journal - University of Sulaimani - Kurdistan - Iraq, Engineering Journal- Aro-The Scientific Journal of Koya University- Kurdistan- Iraq, Ocean Engineering journal, Egyption Petroleum journal.
ACHIEVEMENTS
(2012) Ranked 2th Student paper competition in ASCE conference- San Antonio- Texas- USA.
(2014) Certificate form Ministry of Higher Education and Scientific Research –Iraq, 2013.
(2011-2015) Four times receiving certificate letters from Iraqi Cultural Office – Iraqi Embassy- Washington DC, USA.
(2015) Ranked 1th Iraqi scholarship student in US based on the number of publications during PhD study.
Presenting at Offshore Technology Conference 2015-USA. (https://www.onepetro.org/presentation/OTC-25842-PT?sort=&start=0&q=Iron+Nanoparticle+Modified+Smart+Cement+for+Real+Time+Monitoring+of+Ultra+Deepwater+Oil+Well+Cementing+Applications&from_year=&peer_reviewed=&published_between=&fromSearchResults=true&to_year=&rows=10#)
(2016-2018) graduate committee member, College of Engineering, University of Sulaimani, Kurdistan–Iraq.
Certificate letter from president of University of Sulaimani (2015-2016).
Certificate letter from president of University of Sulaimani (2016-2017).
Invited as a speaker for 7th International Symposium on Energy, Manchester, UK 13-17th Aug 2017 (http://energy7.nscj.co.uk/sessions/Houston.html)
Invited as a speaker for 2nd International Conference on Gas, Oil and Petroleum Engineering” (GOPE-2018) scheduled in Houston, USA, February 26-28, 2018 (https://unitedscientificgroup.com/conferences/gope/speakers).
Invited as a speaker for 7th World Congress of Smart Energy-2017, November 2-4, 2017 in Wuxi, China.
Invited as a speaker for First Iraqi Workshop on Geotechnical Engineering”- October 2017 Venue: University of Salahaddin- Erbil-Iraq.
Award from K-scien organization for top ranking 10 international paper Feb. 2018.
Organize committee members for an international conference- Oil and Gas in Singapore 09-2018.
Organize committee members for an international conference- Structural and Civil Engineering Research 10-2018 (https://civilengineering.euroscicon.com/organizing-committee).
Invited for Global Energy Association on development of international research, Global Energy Prize was awarded for outstanding research, held in Moscow 10-2018.
Appreciation letter from Kurdistan Institution for Strategic Studies and Scientific Research (KISSR) - Publication in ASTM, Nov. 2018.
International consultant for training course in OFI Testing Equipment, Inc. Dubai 12-18.
Awarded form Mistry of Higher Education-KRG and University of Sulaimani as an active researcher in the Engineering College, 2-Feb. 2019.
Invited as a speaker for 3nd International Conference on Gas, Oil and Petroleum Engineering” (GOPE-2019) scheduled in San Francisco, USA, February 18-20, 2019 (https://unitedscientificgroup.com/conferences/gope/speakers).
Selected as an organizing committee to the 2nd International Conference on Oil and Gas 2019 which is slated for December 02-03,2019 in Dubai, UAE. Under AUIS address, http://oil-gas.alliedacademies.com/ocm/2019/dr-ahmed-salih-mohammed-american-university-of-iraq-sulaimani-auis-iraq
Invited speaker for Tunnel Engineering conference in Koya University-Geotechnical department 4-4-2019.