Research and application of fast drilling technology in Jiangdong Block of Fuling Shale Gas Field

Abstract:

The Jiangdong Block of the Fuling Shale Gas Field is featured of complex geological structures and large dip angles. Problems such as low mechanical drilling rate, severe drag force and difficult horizontal trajectory control are encountered, which brings drilling problems to the fast drilling operations in this area. By summarizing the field operations and technical problem solving practices, this paper presents a set of fast drilling techniques through analysis of drilling processes, new tools, bit selection and speedincreasing tools suitable for the complicated geological conditions of Jiangdong Block. Comparison of the fast drilling technology with the conventional drilling method at the Jiangdong Block of the Fuling Shale Gas Field shows that the drilling duratiom in Jiangdong Block has been shortened from 235 days to 9033 days in the early stage of development. While the drilling rate and the reservoir intersection rate have been continuously improved, the working conditions such as drag forces, premature bit failures have been gradually reduced. Over three years of development, the fast drilling technology at Jiangdong Block of Fuling Gas Field has gradually matured, and the results have been applied significantly.