EZFLOW钻井液在XX油田的应用

Application of EZFLOW System to XX Oilfield

王晓琪 林俊文 陈璐思

WANG Xiaoqi LIN Junwen CHEN Lusi

中海油能源发展工程技术公司, 天津 300452

Engineering & Technology Co. of CNOOC Energy Development, Tianjin 300452, China

此文围绕水平井水平段钻井与优化完井的钻井液使用需求，相应地将EZFLOW钻井液体系与PRD钻井液体系进行了总体性的对比；阐述了EZFLOW体系的改进要求与构成原理、使用要求与性能控制要点、现场操作措施和在XX油田的成功应用。以此表明该体系具有很好的携砂能力，超强的切力和较高的相应低剪切速率黏度——在低泵速或停泵时有利于悬浮钻屑，提高井眼净化能力，克服了水平井或大斜度井段携砂困难，并且免破胶的操作流程对于储层保护、简化添加剂品种而更好地适应于海洋运输与健康安全环境，这不管在增产和降本方面均具有重大的意义，完全适用于XX油田及渤海的类似油田。

In this paper,the EZFLOW drilling fluid system and PRD drilling fluid system are compared in the light of the requirements for drilling fluid used in horizontal well drilling and optimized completion.In this paper,a brief introduction is given to the improvement requirements and composition principle of the EZFLOW system,the application requirements and the main points of performance control,the field operation measures and the successful application in the XX Oilfield.The results indicated that the EZFLOW system has very good carrying capacity,super high shear force and relative low shear rate viscosity.It is favorable to the suspension of drilling cuttings,and can be used to improve the hole cleaning ability,and to overcome the difficulty of carrying sand in horizontal or high angle wells at low pump speed or stopping pump.The operation flow is free from breaking glue,which is favorable for reservoir protection and simplifying of the types of additives,being well adapted to marine transportation and health and safety environment.It is of great significance both in increasing production and reducing cost,being suitable for XX oilfield and similar fields in Bohai Oilfield.

https://doi.org/10.3969/j.issn.1008-2336.2017.02.069