Anti-collision Technology for Surface Large-size Section of Cluster Wells in South China Sea

doi:10.3969/J. ISSN.1006-768X.2020.01.08

Drilling & Production Technology ›› 2020, Vol. 43 ›› Issue (1): 27-29.DOI: 10.3969/J. ISSN.1006-768X.2020.01.08

• DRILLING TECHNOLOGY • Previous Articles Next Articles

Anti-collision Technology for Surface Large-size Section of Cluster Wells in South China Sea

YANG Yuhao¹ , ZHANG Wandong¹ , ZHAO Chao¹ , WU Jiang¹ and YANG Qianliang²

1 . China National Offshore Oil Corporation Limited-Zhanjiang, Zhanjiang, Guangdong 524057, China; 2. Zhanjiang Branch, CNOOC EnerTech-Drilling & Production Co. , Zhanjiang, Guangdong 524057, China

Online:2020-01-25 Published:2020-01-25
Supported by:

南海某高温高压气田丛式井表层大尺寸井眼防碰技术

杨玉豪¹, 张万栋¹, 张超¹, 吴江¹, 杨前亮²

1 中海石油( 中国) 有限公司湛江分公司 2 中海油能源发展股份有限公司工程技术湛江分公司

作者简介:杨玉豪( 1988 - ) , 工程师, 硕士, 2014 年毕业于西南石油大学油气井工程专业, 现主要从事海洋钻井工艺技术研究工作。地址: ( 524057) 广东省湛江市坡头区南油二区西部公司附楼 6 楼, 电话:13729076106, E - mail: yangyh31 @ cnooc. com. cn
基金资助:
国家“十三五”重大科技专项子课题“莺琼盆地高温高压天然气富集规律与勘探开发关键技术(三期) ”(编号: 2016ZX05024-005 ) ; 中海油重大项目“莺琼盆地高温高压钻完井液?固井工艺研究与应用”(编号: CNOOC - KJ 135 ZDXM 24 LTD ZJ 02) ; 中海油重大项目“莺琼盆地高温高压钻完井和测试安全技术研究”(编号: CNOOC - KJ 135 ZDXM 24 LTD ZJ 04) 。

Abstract

Abstract: Offshore oil & gas fields are usually developed by cluster wells with the characteristic of dense wellheads and small space between wells. The pressure gradient of gas field in South China sea varies greatly with many pressure steps and relatively complex well casing program, all of which probably lead to high risk of wellbore collision while batch drilling the ?660. 4mm surface section. In this paper the difficulties of anti-collision while surface drilling are introduced, the comprehensive anti-collision technology for surface large-size wellbore put forward, and the
key points of the technique analyzed. The technology has been successfully applied in the gas field, effectively avoided the well collision, and provided a technical reference for drilling operations of the similar wells.

Key words: , South China Sea, cluster wells, surface well bore collision prevention, pre-deflect, anti-collision monitoring

摘要： 海上油气田通常以丛式井方式开发，井数多、井口密集、井槽间距小。南海某气田地层压力梯度变化

大、台阶多，其井身结构较复杂，表层６６０．４ｍｍ井段进行集中批钻作业时井眼碰撞风险高。文章介绍了南海某气田表层钻井防碰的技术难点，针对性提出表层大尺寸井眼综合防碰技术对策，并深入分析各项技术的关键点。该项技术在南海某气田表层井段作业中得到成功应用，安全高效地化解了防碰压力，可为以后类似的海上丛式井表层钻井防碰提供技术参考。

关键词: , 南海, 丛式井, 表层防碰, 预斜, 防碰监控

CLC Number:

YANG Yuhao, ZHANG Wandong, ZHAO Chao, WU Jiang, YANG Qianliang. Anti-collision Technology for Surface Large-size Section of Cluster Wells in South China Sea[J]. Drilling & Production Technology, 2020, 43(1): 27-29.

杨玉豪, 张万栋, 张超, 吴江, 杨前亮. 南海某高温高压气田丛式井表层大尺寸井眼防碰技术[J]. 钻采工艺, 2020, 43(1): 27-29.

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Anti-collision Technology for Surface Large-size Section of Cluster Wells in South China Sea

南海某高温高压气田丛式井表层大尺寸井眼防碰技术

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