Z3034 小井眼侧钻水平井完井技术

Completion technique of slim hole sidetracking for horizontal well Z3034

郭锋 孙星云 罗晓敏

GUO Feng SUN Xingyun LUO Xiaomin

中油国际曼格什套有限责任公司，哈萨克斯坦阿克套　130000 中国石化华北分公司勘探开发研究院，河南郑州　430007

AO MMG, Aktay 130000, The Republic of Kazakhstan North China of Sinopec, Zhengzhou 430007, China

为提高老井单井产量，加快治理?146 mm 的套损井，决定利用扩孔工具，扩大完井井眼直径，增大水泥环厚度，延长油井使用寿命。分别从完井方式、完井液及井眼扩孔3 个方面对Z3034 井完井进行了优化设计，详细介绍了该井的扩眼及完井管柱下井的施工过程。该井的顺利完井为热德拜油田后续治理小井眼套损井、实施小井眼侧钻提供了一条切实可行的途径。Z3034 井自侧钻投产以来产量比较稳定，平均5 t/d，是侧钻前产量的5 倍。

In order to improve mature single well production and speed up the curing process of casing damaged wells with casing diameter of ?146 mm, it is decided to use the reaming tool to increase the diameter of completed wells, and to increase cement sheath thickness, furthermore, to improve well service life. In this paper, the completion of Well Z3034 is designed and optimized from three aspects, completion method, completion fluid and borehole reaming. The working process of reaming and completion string tripping are introduced in detail, the success of the well completion provides a feasible way for subsequent treatment of slim-hole casing damaged wells in Redbai oil field and conducting of slim-hole sidetracking. The production of Well Z3034 has been relatively stable since the start of production, with the average rate of 5t/d, and it is 5 times of the non-sidetrack case.