基于水力能量利用效率的超深井钻井提速技术.docxVIP

第31卷第5期 2009年10月 石 油 钻 采 工 艺 OIL DRILLING PRODUCTION TECHNOLOGY Vol.31 Oct. No.5 2009 文章编号：1000-7393(2009)05-0033-03 基于水力能量利用效率的超深井钻井提速技术 张广峰 易 灿 2 闫 振 来 2 (1. 胜利石油管理局渤海钻井二公司，山东东营 257200;2.胜利石油管理局钻井工艺研究院，山东东营 257017) 摘要：水力因素是影响钻速最活跃的因素之一。为了最大限度地利用水力能量，提高超深井钻井速度，利用编制的软件， 对影响水力能量利用效率各因素进行了分析。结果表明，超深井采用0139.7 mm 钻杆代替0127mm 钻杆，1000m 可减小泵压 约0.6 MPa; 黏度每降低10mPa ·s,泵压可降低0.4MPa 左右；密度每增加0.1g/cm3,泵压增加0.8 MPa 左右；排量每增加1L/s, 泵压增加1MPa 以上。同时，分析了超深井钻井喷射钻井的可行性及实现方式，指出超深井水力参数设计需按最小流量法设计， 为提高超深井钻井速度提供了有益的参考。 关键词：超深井；钻井速度；水力能量； 喷射钻井 中图分类号： TE245 文献标识码： A ROP increasing method based on the utilization efficiency of hydraulic power for the ultra-deep wells ZHANG Guangfeng, YI Can2, YAN Zhenla? (1.Shengli Petroleum Administration No.2 Bohai Drilling Company, Dongying 257200, China; 2. Drilling Technology Research Institute of Shengli Petroleum Administration, Dongying 257017,China) Abstract: Hydraulic factor is one of the most important parameters which can affect ROP. To optimize the utilization of hydraulic power and increase the ROP for ultra-deep wells, all of the factors that can affect the utilization efficiency of the hydraulic power were analyzed. The results demonstrate that if O139.7 mm drill pipe is used instead of O127 mm drill pipe, the pump pressure would reduce 0.6 MPa/1000 m; and pump pressure would reduce about 0.4 MPa with drilling fluid viscosity decreasing 10 mps; pump pressure in- creases 0.8 MPa with drilling fluid density increasing 0.1 g/cm3; and pump pressure increases more than 1 MPa with pump rate increas- ing 1 L/s. Meanwhile, the feasibility and implement method of jetting drilling on ultra-deep wells was analyzed, and point out that the ultra-deep well hydraulic parameters design should follow the minimum flow rate designing method, and also provides good reference for ROP improvement of ultra-deep wells. Key words: ultra-deep well; ROP; hydraulic power; jetting drilling 随着国内勘探开发水平的不断提高，深部地层 油气资源逐步得到利用，但这类地层的钻井速度极 低，成本高、周