摘要
为了进一步挖掘油田潜力,在渤海油田A区块部署了一口水平分支井。该井在钻完井中存在浅层造斜率高、侧钻开窗难度大、钻井液性能要求高、尾管下入难度大、防砂管柱下入阻卡风险高等难点。针对存在的问题,研究形成了包括开窗位置优选、Φ215. 9 mm井眼着陆段与水平段一趟完钻技术、满足壁挂式悬挂器坐挂条件的侧钻开窗技术、钻井液性能优化技术、下尾管技术、分支井眼重入技术和分支井完井技术等系列关键技术,有效保障了该井的顺利实施。该井是A区块的第1口水平分支井,该井的成功实施,有效节省了井槽和开采成本,为水平分支井技术在低产低效井治理和油田挖潜中的应用提供了经验,在渤海油田中后期的大规模调整开发中有广阔的应用前景。
In order to further exploit the reservoir potential,a horizontal branch well was deployed in the Block A of the Bohai Oilfield. The drilling and completion operations were greatly challenged by high build-up rate in the shallow interval,large difficulties in sidetracking window cutting and tail pipe running,high requirements for drilling fluid performance,high risk of sand-control running,etc. A series of key technologies were developed to effectively ensure the operation of this well,including sidetracking window optimization,one-trip drilling of landing and lateral sections with Φ215. 9 mm wellbore,sidetracking window cutting technology to realize borehole wall hanger running,drilling fluid performance optimization,tail pipe running,branch well re-entry technology and branch well completion technologies. This well is the first horizontal branch well in the Block A. The successful operation of this well effectively reduces the slot and production costs,which could provide precious experiences for the application of horizontal branch well in the low production-efficiency well treatment and oil recovery. It also shows a broad application prospect in the large-scale adjustment and development of the Bohai Oilfield in the middle-late development stage.
作者
豆志远
王昆剑
李进
谢小品
李瑞峰
朱培
王伟
Dou Zhiyuan;Wang Kunjian;Li Jin;Xie Xiaopin;Li Ruifeng;Zhu Pei;Wang Wei(CNOOC EnerTech-Drilling&Production Company,Tianjin 300459,China;CNOOC(China)Tianjin Branch,Tianjin 300459,China;State Key Laboratory of Offshore Oil Exploitation(CNOOC),Tianjin 300459,China;CNPC Xibu Drilling Engineering Co.,Ltd,Urumqi,Xinjiang 830011,China)
出处
《特种油气藏》
CAS
CSCD
北大核心
2020年第2期157-163,共7页
Special Oil & Gas Reservoirs
基金
国家科技重大专项“渤海油田高效开发示范工程”(2016ZX05058)。
关键词
分支井
水平井
四级完井
低产低效区块
渤海油田
branch well
horizontal well
four-grade completion
low production-efficiency block
Bohai Oilfield
