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海上复杂易垮塌地层高性能油基钻井液研发与应用

吴江 李龙 任冠龙 张崇

吴江, 李龙, 任冠龙, 张崇. 海上复杂易垮塌地层高性能油基钻井液研发与应用[J]. 钻井液与完井液, 2018, 35(5): 55-60. doi: 10.3969/j.issn.1001-5620.2018.05.011
引用本文: 吴江, 李龙, 任冠龙, 张崇. 海上复杂易垮塌地层高性能油基钻井液研发与应用[J]. 钻井液与完井液, 2018, 35(5): 55-60. doi: 10.3969/j.issn.1001-5620.2018.05.011
WU Jiang, LI Long, REN Guanlong, ZHANG Chong. Development and Application of A High Performance Oil Base Drilling Fluid for Drilling Complex Sloughing Formations in Offshore Operations[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 55-60. doi: 10.3969/j.issn.1001-5620.2018.05.011
Citation: WU Jiang, LI Long, REN Guanlong, ZHANG Chong. Development and Application of A High Performance Oil Base Drilling Fluid for Drilling Complex Sloughing Formations in Offshore Operations[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 55-60. doi: 10.3969/j.issn.1001-5620.2018.05.011

海上复杂易垮塌地层高性能油基钻井液研发与应用

doi: 10.3969/j.issn.1001-5620.2018.05.011
基金项目: 

中国海洋石油集团有限公司科技攻关项目“高温高压钻完井液、固井工艺研究与应用”(CNOOC-KJ 135ZDXM 24 LTD ZJ 02)。

详细信息
    作者简介:

    吴江,硕士研究生,1983年生,2010年毕业于中国石油大学(北京)油气井工程专业,主要从事海上油气井钻井及储层保护工艺技术研究。E-mail:wujiang2@cnooc.com.cn。

  • 中图分类号: TE254.3

Development and Application of A High Performance Oil Base Drilling Fluid for Drilling Complex Sloughing Formations in Offshore Operations

  • 摘要: 南海西部北部湾盆地涠西南油田涠洲组地层受构造应力及地层高含硬脆性泥页岩影响,井壁失稳风险极高,传统油基钻井液在钻进涠二段过程中不断出现起钻困难、井壁失稳和固井质量差等诸多问题。在分析传统油基钻井液应用情况的基础上,通过对乳化剂、封堵剂以及提切剂等处理剂优选,研发了新型高油水比(95∶5)高性能油基钻井液体系,该钻井液具有良好的井壁稳定、封堵能力以及优异的ECD控制能力,抗劣质土污染可达15%,岩心被钻井液损害后渗透率恢复值在90%以上,返排压力为0.4 MPa,具有良好的储层保护能力,并可提高机械钻速和起下钻效率。现场应用结果表明,高性能油基钻井液钻进涠洲组二段地层时,钻井液流变性稳定,封堵性强,井眼清洁效果好,ECD值低,未发生井漏现象,井深2 500 m钻井周期为8.09 d,较前期开发井钻井周期降低48%,储层保护效果良好。为今后北部湾海域类似油田开发提供了良好借鉴。

     

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出版历程
  • 收稿日期:  2018-06-29
  • 刊出日期:  2018-09-30

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