Key Technical Research on Horizontal Well Drilling in Jimsar Shale Oil
Jimsar shale oil is an important unconventional oil and gas resource replacement field in China,in 2020 it was approved as the first continental shale oil demonstration zone,compared with other shale oil development areas at home and abroad,the shale oil is buried deeper and more difficult to develop.In the early stage of development,the horizontal well drilling engineering technology was not yet mature,with long drilling cycles and high costs,which seriously affected the scale efficiency and production.In recent years,following the concept of"geological engineering integration"and targeting the bottleneck of drilling technology,key technologies such as wellbore structure optimization,thin interbedded sweet spot tracking guidance,scientific drilling real-time optimization,and low-cost high-performance oil-based drilling fluid have been developed and integrated,forming the key technology for drilling horizontal wells in Jimsar shale oil,supporting a 57.5%reduction in the average drilling cycle of horizontal wells and a 40.0%reduction in drilling costs.Through breakthroughs in drilling engineering technology,regional scientific,large-scale,and efficient development has been promoted,providing a good demonstration for other shale oil regions in China.
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