资源与产业 ›› 2011, Vol. 13 ›› Issue (4): 117-121.

• 资源开发 • 上一篇    下一篇

绒囊工作液在煤层气勘探开发中的应用前景

郭本广1, 郑力会2, 孟尚志1, 孔令琛2   

  1. 1中联煤层气有限责任公司,北京 100011;2中国石油大学 石油工程学院,北京 102249
  • 收稿日期:2010-12-06 修回日期:2011-03-15 出版日期:2011-08-20 发布日期:2011-08-20
  • 作者简介:郭本广(1962—), 男, 高级工程师, 主要从事煤层气勘探开发研究与管理工作。
  • 基金资助:

    国家科技重大专项大型油气田及煤层气开发(2011ZX05062)。

APPLICATION PROSPECT OF FUZZYBALL WORKING FLUID IN COALBED METHANE EXPLORATION

 GUO  Ben-guang1,ZHENG  Li-hui2, MENG  Shang-zhi1, KONG  Ling-chen2   

  • Received:2010-12-06 Revised:2011-03-15 Online:2011-08-20 Published:2011-08-20

摘要:

选择合适的井筒工作流体用于勘探开采煤层气迫在眉睫。泡沫类工作液已成为煤层气作业的重要选择之一,在国内外煤层气作业中应用广泛。在泡沫类工作液基础上研发的绒囊工作液,不但解决了泡沫类工作液在液柱压力下泡沫消失问题,而且在煤层气钻井过程中表现出密度可调、承压能力强、封堵性能好、储层保护效果明显等特点。实例还表明绒囊工作液匹配地层裂缝、孔道大小或形状的自适应能力强,全面封堵渗流通道。这种自适应地层渗流通道的作用机理表明,绒囊工作液在煤层气欠平衡钻井、低密度水泥浆固井、提高地层承压能力以及储层改造等方面应该有很好的应用前景。要实现这些作业环节成功应用绒囊工作液,应加强绒囊工作液在钻井液、水泥浆、射孔液和压裂液等方面的应用研究,满足煤层气勘探开发需要。

关键词: 绒囊工作液, 煤层气, 作用机理, 钻井, 固井

Abstract:

It is urgent to choose an appropriate working fluid for coalbed methane exploration and development. The foam working fluid as one choice of coalbed exploration has been used extensively worldwide. The fuzzy-ball working fluid which is based on foam working fluid not only prevent vanishment of foam, but also bears of adjustable fluid density, pressure-bearing capacity, good sealing capability and excellent reservoir protection. It is proven to be of a strong self-adapting capability in sealing strata fissures, channels sizes and shapes, which show a good application prospect in coalbed methane unbalance drilling, low-density cement slurry, increasing strata pressure-bearing capability and reservoir reconstruction. To achieve this application of fuzzy-ball working fluid, research shall be enhanced in drilling fluid, cement slurry, perforating fluid and fracturing fluid.

Key words: fuzzy-ball working fluid, coalbed methane, mechanism, drilling, fixing borehole

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