Research on Total Factor Risk Assessment and Management of Oil and Gas Well Engineering in Ultra Deep Well

There are many factors that affect the essential safety of oil and gas wells, and it involves a wide range of fields. Analysis of the current situation of oil and gas well engineering in a certain oilfield company was conducted through research, inspection, and other methods. Some key research objects were selected combined with the current situation and typical cases of oil and gas well engineering. Systematically identify 299 factors that affect the essential safety of oil and gas wells from 76 control projects in specialties: drilling, cementing, logging, downhole operations, and fracturing. Based on on-site construction experience and data analysis, use the matrix of factors affecting wellbore quality to determine the risk values of each element. Select 120 elements with a weight assignment of 30 points or more as key elements to form a list of essential safety key elements for oil and gas wells in this oilfield. This will promote the implementation of control of oil and gas wells and improve management and supervision efficiency.