March 4, 2021

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Zichang Li Coauthored an Article on Oil Well Cement Performance for SPE Journal

Zichang Li, Ph.D., P.E., (Maryland) coauthored an article entitled "Characterization of Oil Well Cement Performance during Early Hydration under Simulated Borehole Conditions" for publication in SPE Journal on February 25, 2021.

Zichang's coauthors were Julie Vandenbossche and Anthony Iannacchione, University of Pittsburgh; and Alex Vuotto, Fugro Roadware.

Zichang Li is an Engineer with experience in geotechnical and pavement engineering. He has served as team member and project assistant for a number of geotechnical and geoenvironmental projects. His professional consulting experience includes design and analysis of coal combustion residual impoundments; slope stability analysis; underground injection pressure and seepage analysis; finite element modeling for geotechnical structures on soil and rock; scheduling and budgeting for geotechnical investigation; site characterization and geotechnical investigation reporting; on-site construction quality assurance consulting; and permit application supporting.

SPE Journal covers novel theories and emerging concepts (not including review articles or multi-part articles) spanning all aspects of engineering for oil and gas exploration and production, including drilling and completions, geomechanics, production and facilities, oilfield chemistry, CO2 sequestration and injection, reservoir evaluation and engineering, numerical simulation, data analytics, economics and externalities, including health, safety, environment, and sustainability.

The Society of Petroleum Engineers (SPE) is a not-for-profit professional association whose members are engaged in energy resources development and production. SPE serves more than 156,000 members from more than 154 countries worldwide.


Experiments on oil well cement (OWC) slurries were performed using the newly developed laboratory-scale wellbore simulation chamber (WSC). The WSC can simulate hydrostatic pressure reduction in the cemented annulus and possible gas migration under representative conditions. Forensic analysis shows that pressurized fluids can result in porous cement and gas channeling during cement slurry gelation. The effects of different factors on slurry pore pressure were also studied, including formation permeability, initial overburden pressure (OBP) representing the depth of interest, wellbore temperature, water/cement (w/c) ratio, cement composition, and the use of a calcium chloride (CaCl2)-based accelerator. By analyzing the temperature history of hydrating cement using degree of hydration, the evolution of cement hydration was characterized for slurry designs cured at different hydration rates. This provides the opportunity to parameterize the slurry designs and other important factors associated with wellbore conditions.

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