为了提高哈萨克斯坦滨里海油田的钻井速度,针对地层特点开展了钻井提速技术研究.研究应用了水力加压器钻头保护技术、旋转垂直导向钻进技术、“MWD+弯螺杆”技术以及“孕镶金刚石钻头十高速涡轮”组合技术,有效解决了二开蹩跳钻、井斜难以控制和三开钻遇灰岩地层机械钻速低的问题,实现了二开、三开快速钻进.现场应用的18口井中,施工井段平均机械钻速达到4.54 m/h,同比提高了103％,节约钻井时间共计196.29 d.现场应用表明,滨里海地区的综合钻井提速技术应用已趋成熟,能够大幅度提高机械钻速,经济效益良好,可在该地区推广应用.%In order to raise drilling rate in Pre-Caspian Oilfield,Kazakhstan,research on penetration rate has been made according to formation features,including the drilling bit protection with hydraulic thruster,rotary vertical guidance drilling,MWD with bent PDM technique,impregnated diamond bit and high-speed turbine assembly,etc.,troubles such as bit bouncing,well inclination,low penetration rate in limestone formation have been solved,fast drilling rate was obtained in second-spud and third-spud well sections.In eighteen wells,the average ROP was up to 4.54 m/h,103％ higher than past drilling rate,or 196.29 days shorter than past drilling cycle time.Field application shows that comprehensive ROP improving technology has been successful,which can raise ROP significantly,and have good economic benefit.So,it can be widely applied in this area.
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