大温差固井技术在渤海某油田的应用  

Application of Large Temperature Difference Cementing Technology in an Oilfield in Bohai Sea

作　　者：赵海建 乔中山 秦天宝 秦斌 白冰 Zhao Haijian;Qiao Zhongshan;Qin Tianbao;Qin Bin;Bai Bing(CNOOC(China)Co.,Ltd.,Tianjin branch,Tianjin 300450;CNOOC China Limited Pengbo Operating Company,Tianjin 300450)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]中海石油(中国)有限公司蓬勃作业公司,天津300450

出　　处：《石化技术》2021年第8期73-74,共2页Petrochemical Industry Technology

摘　　要：随着渤海油田的开发,要求封固的目的层越来越多,而且复杂层位越来越多、为了节约成本、为难以预知的预处理复杂情况提供处理层,在上部能够实现的层段应用长封固段固井用以节约套管层次的做法越来越多,传统的双级固井方式存在弊端。研究一种可以抗高温、适用于大温差的低密水泥浆体系,对长裸眼段进行一次封固,是本文的研究重点。笔者通过研究新型大温差缓凝剂,配合低密水泥浆体系,研究出一套适用于该油田的固井体系,提高了钻井时效。With the development of the Bohai Oilfield,more and more target layers are required for sealing,and more and more complex layers.In order to save costs and provide treatment layers for complex conditions that are difficult to predict in advance,it can be achieved on the upper part.There are more and more methods of applying long-sealing section cementing to save casing layers.The traditional two-stage cementing method has its drawbacks.To study a low-density cement slurry system that can withstand high temperatures and is suitable for large temperature differences,and to seal the long open-hole section once is the focus of this article.The author developed a set of cementing system suitable for this oilfield by researching a new type of large temperature difference retarder combined with a low-density cement slurry system to improve the drilling efficiency.

关 键 词：双级固井 大温差 缓凝剂 低密水泥浆 

分 类 号：TE52[石油与天然气工程—油气田开发工程]