钻采工艺 ›› 2019, Vol. 42 ›› Issue (4): 100-103.DOI: 10.3969/J. ISSN.1006-768X.2019.04.29

• 油田化学 • 上一篇    下一篇

土库曼斯坦加尔金内什气田复杂井钻井液技术

邓仕奎, 陈鑫, 高利华, 杨晓冰, 李华坤   

  1.  1 中国石油川庆钻探公司土库曼斯坦分公司 2 中国石油川庆钻探公司钻采工程技术研究院
  • 出版日期:2019-07-25 发布日期:2019-07-25
  • 作者简介:邓仕奎( 1963 - ) , 教授级高级工程师, 1984 年毕业于西南石油学院油田化学专业, 长期从事钻井液现场技术管理工作。地址:( 610000) 四川省成都市成华区猛追湾街 26号川庆钻探公司土库曼斯坦分公司, 电话:13880827788, E-mail: dengsk@ cnpc.com.cn
  • 基金资助:
     

 DRILLING FLUID TECHNOLOGY FOR COMPLEX WELLS IN GALGINESH GASFIELD IN TURKMENISTAN

  1. 1 . CCDC Turkmenistan Branch,Chengdu, Sichuan 610000, China; 2. CCDC Drilling & Production Engineering Technology Research Institute, Guanghan, Sichuan 618300, China
  • Online:2019-07-25 Published:2019-07-25
  • Supported by:
     

摘要:  针对土库曼加尔金内什气田不同复杂特点,选用两性离子聚合物和聚磺钻井液体系,解决了Ø444.5 mm大井眼3 000 m长裸眼泥页岩地层造浆、钻头泥包、井壁垮塌和起下钻阻卡等技术难题;抗 150 ℃高温高密度 (2.10~2.45 g/cm3)饱和盐水聚磺钻井液体系,解决了450~700 m巨厚盐膏层蠕变缩径和盐水侵技术难题;抗高 温(170 ℃ ~180 ℃)强封堵防塌钻井液体系及堵漏技术,解决了“三高”碳酸岩生物礁目的层易垮塌、安全窗口窄、孔 洞裂缝发育、漏喷同层等技术难题。施工期间配合甲方成功处理由于钻具老化、钻遇异常高压 ×264井、110井三 开高压盐水溢流、井漏,×262井四开溢流关井断钻具打捞等井下复杂事故。目前5 口技术服务井中2口井已成功完钻。

 

关键词:  防塌, 两性离子聚合物, 高压盐膏层

Abstract:  For different complex problems at Galginesh Gasfield in Turkmenistan, different drilling fluid technologies are developed and used. Zwitterion polymer and polymer-sulphonated drilling fluid system are used for 444. 5 mm large bore to inhibit and to avoid bit ball, well caving and trip sticking. Saturated brine poly-sulphonated system and plugging technology are used to overcome gypsum creeping, under gauging and brine invasion. Anti-sloughing plugging system is used in 3 high carbonate reef zones which are subject to well caving, with narrow safety window, developed pores and cracks, and kick-loss problem.And we have helped Company to solve other kinds of downhole accidents.

Key words:  , anti-sloughing, zwitterion polymer, high pressure gypsum bed

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