新疆页岩气小口径地质调查井钻井技术探索与实践

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

摘要:

新疆作为我国页岩气资源潜力巨大的区域，其复杂的地质条件（如深层、强水敏页岩等）对钻井施工工艺提出了严峻挑战。本文结合小口径地质调查井和页2井的钻井实践，系统分析了适合新疆地区的钻井技术优化方案，包括设备选型、钻头选型、防斜打直、冲洗液、堵漏和智能化监测等关键技术。通过现场实践验证，优化后的钻井工艺显著降低了复杂事故率，提高了钻进效率，为新疆页岩气经济高效开发提供了技术支撑。未来需进一步攻关低成本钻井技术和智能化钻井技术，以适应规模化开发需求。

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.