Petrochemical drilling operations consists of the most complicated and complex activities specifically from the perspective of occupational safety and health of drilling crew and labour. Because of the involvement of state of the art electrical and mechanical equipment in drilling operations most of the untrained drilling crew are facing critical and life threatening injuries during the handling of high-tech equipments worldwide. Improper and insufficient methods and approaches for the estimation and reorganization of onshore and offshore drilling operations and its associated activities are one of the main reasons for hazardous events and accidents. Therefore, this paper emphasizes and proposes an effective mix-method approach for the identification of hazardous activities and potential hazards for Malaysian, Saudi Arabian and Pakistani onshore and offshore drilling sites by adopting a sequential explanatory research design approach.

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