339.7 mm套管回收技术在东海油田A10井的应用

doi:10.12087/oeet.2095-7297.2018.01.07

海洋工程装备与技术 ›› 2018, Vol. 5 ›› Issue (1): 30-35.doi: 10.12087/oeet.2095-7297.2018.01.07

• 海洋油气勘探开发技术与装备 • 上一篇下一篇

339.7 mm套管回收技术在东海油田A10井的应用

严维锋¹，袁则名²，和鹏飞²，史文专¹

1.中海石油(中国)有限公司上海分公司，上海 200335；2.中海油能源发展股份有限公司工程技术分公司，天津 300452

收稿日期:2017-09-12 修回日期:2017-10-24 出版日期:2018-02-25 发布日期:2018-02-06
作者简介:严维锋（1983—），男，工程师，主要从事海上油气勘探开发钻完井工程管理工作。

Recovery Technology of 339.7 mm Casing of A10 Well in the East China Sea

YAN Wei-feng¹, YUAN Ze-ming², HE Peng-fei², SHI Wen-zhuan¹

1.Shanghai Branch of CNOOC Ltd., Shanghai 200335, China; 2.CNOOC EnerTech-Drilling & Production Co., Tianjin 300452, China

Received:2017-09-12 Revised:2017-10-24 Online:2018-02-25 Published:2018-02-06

摘要/Abstract

摘要： 套管回收技术主要应用于海洋钻井丛式井井槽再利用侧钻前的井筒处理和单井或平台整体弃井时的井筒处理两个方面。为了提高东海油气田产量，提高油气采收率，同时实现井槽重复利用，目前侧钻井技术在东海油气田逐年增加，套管回收技术在东海侧钻井中的作业比例也逐年增加。但新的技术问题也在不断凸显，比如大尺寸套管的回收、井眼与套管环空水泥质量和环空介质分布情况不明确、套管不居中等问题均给套管回收带来新的技术难题。在东海某井大尺寸套管回收中通过采用套后成像(IBC)测井技术，优选切割位置，应用打捞、套铣、磨铣等工艺，成功将东海某油气田A10井339.7 mm套管回收，为后续井筒侧钻创造条件。此次成功应用也可为我国海上油气田类似作业提供借鉴。

Abstract: In the offshore oil and gas development, casing recovery technology is mainly used in sidetracking and abandoned well shaft treatment. Sidetracking technology is gradually increasingly used in the oil and gas fields of the East China Sea, mainly to improve the production and recovery, and realize the reuse of well slots. But in the casing recovery technology, new technical problems are also emerging, such as the difficulty in recovering large size casing, the uncertainties in the annulus cement quality between borehole and casing and in the annulus medium distribution, as well as the deviation of the casing from the center position. In the East China Sea, the recovery of a large size casing is successfully performed. During the recovery process of the 339.7 mm casing of A10 well, some techniques are used, including the isolation scanner (IBC) logging technology, the optimization of cutting position, and the application of fishing, casing milling, milling and other processes. The successful recovery could provide conditions for subsequent sidetrack drilling. These technologies can also be used for similar operations.

中图分类号:

TE52

严维锋, 袁则名, 和鹏飞, 史文专. 339.7 mm套管回收技术在东海油田A10井的应用[J]. 海洋工程装备与技术, 2018, 5(1): 30-35.

YAN Wei-feng, YUAN Ze-ming, HE Peng-fei, SHI Wen-zhuan. Recovery Technology of 339.7 mm Casing of A10 Well in the East China Sea[J]. Ocean Engineering Equipment and Technology, 2018, 5(1): 30-35.

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339.7 mm套管回收技术在东海油田A10井的应用

Recovery Technology of 339.7 mm Casing of A10 Well in the East China Sea

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