河坝1井高陡构造带防斜打直技术  

Deflecting Protection Technology while Drilling High Dip Angle Structures in Heba 1 Well

作　　者：肖新磊[1] 董明键[1] 宋彦波[1] 马飞[1] 

机构地区：[1]胜利石油管理局黄河钻井总公司,山东东营257091

出　　处：《石油钻探技术》2005年第4期20-22,共3页Petroleum Drilling Techniques

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.

关 键 词：井斜控制 机械钻速 钻具组合 钻井参数 河坝1井 

分 类 号：TE28[石油与天然气工程—油气井工程]