摘要
河坝1井上部陆相地层属于高陡构造,地层倾角大,极易发生井斜。为解决大井眼高陡构造带易井斜和机械钻速低的难题,该井在钻井过程中试验应用了偏轴钻具组合、大尺寸钻铤组成的塔式钻具组合和直螺杆钻具组合。应用效果表明,在目前的技术条件下,大尺寸塔式钻具组合是川东地区高陡构造带大倾角地层防斜打直的较好选择,但同时须优选钻头及钻井参数,并强化井身质量监测。
The upper continental formations are high dip angle structures in Heba 1 Well. Being the high dip angle, well bore deflection is likely to happen. In order to inhibitive the wellbore deflection and increase the ROP while drilling above structure, the eccentric BHA, tapered drill collar string of 279. 4mm, straight mud screw drill are tested in this well. Applications show that, under current technical situations, large tapered drill collar string is a better choice to prevent wellbore from deflecting while drilling such structure, but bit and drilling parameters must be optimized and wellbore quality monitoring be reinforced.
出处
《石油钻探技术》
CAS
北大核心
2005年第4期20-22,共3页
Petroleum Drilling Techniques
关键词
井斜控制
机械钻速
钻具组合
钻井参数
河坝1井
deviation control
penetration rate
bottom hole assembly
drilling parameter
Heba 1 Well
