Date of Conferral



Doctor of Business Administration (D.B.A.)




Charlotte M. Carstrom


In Africa, most oil and gas megaprojects exceed their original budget and time deadlines despite advancement in project management processes and systems. This study explored strategies project managers used for megaprojects' success in the oil and gas industry in Nigeria, from the perspectives of the owner and contractor organizations. Multiple case study design was utilized to collect data by asking open-ended questions in separate interviews with 4 project managers. Archival project data was also reviewed to eliminate information incongruences. The conceptual framework for the study is the contingency theory that there is no universal management structure for every project. The data analysis approach was thematic coding. Study findings from the data analysis were aggregated into 5 themes. The 1st, 2nd, and 3rd themes include the project managers' view of measures of megaproject successes, project managers' strategies for managing the business environment, and the strategies for achieving megaproject execution excellence. The 4th and 5th themes are the strategies for facilitating employee performance and the typical social change development and social change performance initiatives to benefit neighboring communities because of a megaproject. The conclusion from the evidences gathered is that megaproject success is contingent on the ability of the project manager to unravel and address complexity leveraging strategic leadership and systems thinking. From these findings, project managers from the client and contractor organizations may use, adapt, learn, refresh, and improve their project management skills. The significance of the study to positive social change from improving the success rates of megaprojects includes improvement in human capacity development and infrastructural additions that can facilitate economic growth in the region.