Exploration and practical analysis of drilling construction technology for shale gas investigation wells in Xinjiang

Abstract:

Xinjiang， as a region in China with enormous potential for shale gas （and hydrocarbon） resources， presents severe challenges to drilling construction processes due to its complex geological conditions， such as deep-seated shale formations and strongly water-sensitive shale. Drawing on the drilling practices of small-diameter geological survey wells， taking Well Ye 2 as an example， this paper systematically analyzes optimized drilling technology solutions suited to this region. These solutions encompass key technologies including equipment selection， drill bit selection， deviation control and straight-hole drilling， drilling fluid management， lost circulation prevention， and intelligent monitoring. Through on-site practical verification， the optimized drilling processes have significantly reduced the rate of complex accidents and enhanced drilling efficiency， thereby providing technical support for the cost-effective and efficient development of shale gas in Xinjiang. Looking ahead， further research is needed to tackle the challenges of low-cost and intelligent drilling technologies to meet the demands of large-scale development.