摘要
为提高涪陵页岩气钻井速度,加快勘探开发进程,开展了涪陵页岩气水平井钻井提速技术研究。通过对该区块地质特点的研究,采用了以理论研究为基础、新工艺改进和新工具的研制与应用相结合的方法,开展了基于地层可钻性和实钻效果分析的钻头选型、新工具的应用、三维长稳斜段井眼轨迹控制、防漏堵漏等技术的探索,形成了涪陵页岩气水平井提速配套技术。在28口井进行了实践应用,平均钻井周期缩短11.42 d,机械钻速提高74.78%。
In Fuling area, many technologies of improving ROP in horizontal wells have been developed in order to accelerate the shale-gas exploration and development process. Based on geological features and theoretical study, some technologies increasing drilling rate available for Fuling shale gas have also been developed, including selection of drilling bit, trajectory control of 3D long, stable, and deviated hole, and lost circulation prevention. After their application to 28 shale-gas wells, the average drilling cycle shortens to 11.42 d and the ROP increases by 74.78%, respectively.
出处
《天然气技术与经济》
2017年第2期31-35,共5页
Natural Gas Technology and Economy
关键词
涪陵
页岩气
水平井
钻井提速技术
轨迹控制
Fuling area
shale gas
horizontal well
increasing drilling rate
trajectory control
