Khairul has over 32 years of working and research experiences as geologist in different fields of geology that covers;-Geological Mapping: Completed Quaternary Geological Mapping of of Bangladesh and supervised Coastal Geological Mapping of covering the entire coastal belt of Bangladesh.
-Mineral Exploration: (i) Worked as well-site geologist in many exploratory drilling projects of the Geological Survey of Bangladesh. (ii) Worked as Chief of the Mineral Sand Investigation Team prepared for Jamuna River. (iii) Investigate the Peat Basin of Chatalbil, Hakaluki Haor, Baralekha Upazila, Moulvibazar District. In this connection mapped the Peat basin area, estimated the reserves and evaluated quality of the Peat.
-Arsenic Investigation in Groundwater: Conducted a number of geoscientific investigations in collaboration with the US Geological Survey Expert Group and with a German Expert to find out the level and causes of As Contamination in the Groundwater of Bangladesh.
-Neotectonic Study: (i) Carried out Geological Investigation on Earthquake of 2010 in Bangladesh. (ii) Identified the Western Boundary Fault of Madhupur Tract, Sahajibazar Fault, Titas Fault and Mainamti Fault. Published Research Papers on the geomorphological changes due to tectonic response of these faults. (iii) Worked as a Resource Person in a Training Programme under Active Fault Mapping Programme of the Geological Survey of Bangladesh (GSB)-Comprehensive Disaster Management Plan (CDMP), Bangladesh.
-Environmental Study: (i) St. Martin’s Island and Its Environmental Issues, Cox’s Bazar District and (ii) Environmental Study of the East Sundarbans Area, Bagerhat and Khulna districts, Bangladesh.
Project Implementation: (i) Worked as Project Director (PD) in the Project ‘Integrated Geological Mapping of the Chalanbil Area to Unveil the Quaternary Records and Climatic Changes’. (ii) Directly supervised the geoscientific works of the Project ‘Geological Exploration for Mineral Resources and Identification of Hazard-prone Areas in Coastal Region of Bangladesh’.
He Worked as Examiner of Undergraduate and Postgraduate Courses, and PhD Thesis of Dhaka, Rajshahi and Jahangirnagar Universities, Bangladesh.
Khairul Worked as member of the Technical Advisory Committee of the CDMP-GSB Project and member of the National Advisory Committee on Jamalganj Coal Field with working experience with the overseas experts from USGS, BGR, GSI etc.