西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (1): 1-12.DOI: 10.11885/j.issn.1674-5086.2021.09.10.02

• 院士思维 •    下一篇

准噶尔盆地南缘井壁失稳机理及对策研究

孙金声1,2, 李锐1,2, 王韧2, 屈沅治2, 黄宏军2   

  1. 1. 西南石油大学化学化工学院,四川 成都 610500;
    2. 中国石油集团工程技术研究院有限公司,北京 昌平 102206
  • 收稿日期:2021-09-10 发布日期:2022-01-25
  • 通讯作者: 孙金声,E-mail:sunjsdri@cnpc.com.cn
  • 作者简介:孙金声,1965年生,男,汉族,江西于都人,教授级高级工程师,中国工程院院士,主要从事钻井液技术等方面的研究工作。E-mail:sunjsdri@cnpc.com.cn;
    李锐,1995年生,女,汉族,四川宜宾人,硕士,主要从事油基钻井液技术等方面的研究工作。E-mail:1319975749@qq.com;
    王韧,1987年生,男,蒙古族,吉林松原人,高级工程师,主要从事油基钻井液技术等方面的研究工作。E-mail:wangrdr@cnpc.com.cn;
    屈沅治,1975年生,男,汉族,湖南新邵人,教授级高级工程师,主要从事油基钻井液技术等方面的研究。E-mail:quyz_dri@cnpc.com.cn;
    黄宏军,1965年生,男,汉族,河南南阳人,高级工程师,主要从事国内外钻井液技术研究与现场应用等方面的研究工作。E-mail:huanghj_dri@cnpc.com.cn
  • 基金资助:
    国家自然科学基金面上项目(52174016);中国石油天然气集团有限公司科学研究与技术开发项目(2021DJ4404)

Research on the Mechanism and Countermeasures of Shaft Instability in the Southern Margin of Junggar Basin

SUN Jinsheng1,2, LI Rui1,2, WANG Ren2, QU Yuanzhi2, HUANG Hongjun2   

  1. 1. School of Chemistry & Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. CNPC Engineering Technology R & D Company Limited, Changping, Beijing 102206, China
  • Received:2021-09-10 Published:2022-01-25

摘要: 准噶尔盆地南缘深层钻井存在高温高压、井壁失稳等难题,现用油基钻井液技术面临巨大挑战。根据呼探1井复杂情况统计,基于对失稳地层岩样组构及特征的分析,揭示了井壁失稳机理。结合南缘深层钻井液技术需求,优选自主研发的纳米封堵剂、超细碳酸钙和弹性石墨形成粒度级配,构建了可有效封堵0.05~50.00μm地层孔缝的油基钻井液体系,该体系180 ℃热滚后高温高压滤失量仅2.8 mL,并可抗20%复合盐水及5%硫酸钙污染,为南缘深层钻井提供了重要技术支撑。

关键词: 准噶尔盆地, 井壁失稳, 机理揭示, 油基钻井液, 处理剂优选, 体系构建

Abstract: Deep drilling in the southern margin of the Junggar Basin has problems such as high temperature and high pressure and instability of the borehole wall. The current oil-based drilling fluid technology is faced with huge challenges. According to the statistics of the complex situation of Well Hutan 1, based on the analysis of the fabric and characteristics of the rock samples of the unstable formation, the mechanism of the instability of the borehole wall is revealed. Combined with the technical requirements of deep drilling fluids in the southern margin, the self-developed nano plugging agent and super fine calcium carbonate and elastic graphite form a particle size gradation, constructing an oil-based drilling fluid system that can effectively seal the pores and fractures of the 0.05~50.00μm formation, the fluid loss of this system is only 2.8 mL after hot rolling at 180 ℃, and it is resistant to the 20% composite brine and 5% calcium sulfate pollution and can provide important technical support for deep drilling in the southern margin.

Key words: Junggar Basin, shaft wall instability, mechanism revealed, oil-based drilling fluid, treatment agent optimization, system construction

中图分类号: