世界钻井技术发展趋势与国内钻井瓶颈问题资料.pptVIP

Location: VOYAGER - Western Alberta Foothills, Canada This case history from the foothills in Canada shows a comparison of hole inclinations achieved with conventional motor assemblies and with the new Vertical Drilling System. The Vertical Drilling System maintained inclinations below half a degree, while the inclinations of conventional motor assemblies ranged between 1 and 4 degrees. Motor assemblies require correction runs to keep the well on track. These corrections result in high local doglegs, as seen on the right side of the graph. The Vertical Drilling System does not require correction runs, as steering takes place continuously and independent from drilling parameters. The time savings achieved with the Vertical Drilling System (10 days in this particular example) are mainly related to the lack of time consuming correction runs or time drilling actions. The Downhole Deployment Valve is a casing deployed flapper valve system that is controlled via a control line that runs from the tool to surface. When the DDV is in the closed position, the DDV completely isolates the wellbore so that assemblies can be safely and quickly tripped in and out of the hole. When the DDV is in the open position, it allows for full bore passage that will allow for all standard BHAs. (8) 一次起下作业概念井和灵巧钻井 2004年6月27日~7月2日于美国科罗拉多举行的SPE论坛探讨一项钻井技术的新概念——“一次起下作业概念井”技术(One-Trip Well)。讨论的主要目的是如何将钻井和完井的一系列先进技术进行集成，以实现更少的起下作业次数，最终完成真正意义上的“一次起下作业钻完井”。 随着世界石油工业的快速发展和科技的不断进步，钻井业近年来出现了许多新的技术。三维多目标井在国外已经广泛开展，套管钻井、实时地层评价、三维旋转导向钻井等先进技术也正在进入常规应用阶段。新兴的一次起下砾石充填作业、迅速发展的“聪明井”(“Smart” Well)技术、不断增长的可膨胀管技术的应用以及保持井眼完整性的化学品的应用技术都在发展之中。这些技术确实解决了某类特定的问题，但钻井业并没有摆脱一口井钻井完井需要多次起下作业的常规作业模式。 (9) 智能完井 智能完井系统是带有井下流量控制阀，井下传感器，并能实时采集有关数据的遥测与控制系统。其目标是将层间隔离、流量控制、机械采油、永久性监测和出砂控制等方面安全可靠地综合起来。它可使经营者从地面实时地对单井多层段油气生产或对多分支井中单分支井眼的油气生产进行监测和控制。智能完井系统将会减少油井生产期间所需要的大量修井作业，从而使油井有较少的油井检修作业量，保持最高的采油水平，获得较高的油层油气采收率。 (9) 智能完井 智能完井系统由地面硬件控制设备和井下模块组成。智能完井系统井下部分由数个模块组成，这些模块具有测试油管压力和环空压力、温度和流量的功能，它类似一种开关控制着油气由油层流入生产管柱。地面系统与井下模块相结合，以辨明油层的层位、