摘要
垦利16-1油田位于渤海南部海域,地质条件复杂,属于典型的“边、小、碎、深”油田。由于井斜较大、套管居中度差、地层承压能力差,固井过程中存在套管下不到位、漏失风险高、顶替效率低等诸多难题,严重制约着该区开发方案实施的进程。针对垦利16-1油田浅层大位移井固井难题,通过下套管技术改进、水泥浆体系优化,结合现场固井技术优化研究,提出了一套系统、成熟的浅层大位移井固井技术。该技术在现场实践中取得了显著效果,保障了该区块大位移井的固井质量,对于渤海湾海域类似情况大位移井固井具有重要的指导意义。
Kenli 16-1 Oilfield is located in the southern part of Bohai Sea,with complicated geological condition,it belongs to the typical“edge,small,broken and deep”oilfield.Due to the large well deviation,poor casing centering,and poor formation pressure bearing capacity,there are many problems in the cementing process,such as insufficient casing,high leakage risk,and low replacement efficiency.These problems seriously restrict the implementation of development plan in this area.In order to solve the above cementing problems,this paper proposes a systematic and mature cementing technology for shallow extended reach wells by improving casing technology,optimizing cement slurry system,and combining on-site cementing technology optimization research.The technology has achieved remarkable results in field practice,solving the difficulty in running the casing pipe,low replacement efficiency,and high risk of leakage.This research has important guiding significance for extended reach wells in similar situations.
作者
李大伟
LI Da-wei(CNOOC Tianjin Branch,Tianjin 300450,China)
出处
《承德石油高等专科学校学报》
CAS
2024年第2期13-20,共8页
Journal of Chengde Petroleum College
关键词
渤海油田
大位移井
下套管
固井
Bohai Oilfield
extended reach well
casing
cementing
