绒囊工作液在煤层气勘探开发中的应用前景  

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

作　　者：郭本广[1] 郑力会[2] 孟尚志[1] 孔令琛[2] 

机构地区：[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

出　　处：《资源与产业》2011年第4期117-121,共5页Resources & Industries

基　　金：国家科技重大专项大型油气田及煤层气开发(2011ZX05062)

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。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.

关 键 词：绒囊工作液 煤层气 作用机理 钻井 固井 

分 类 号：TE357[石油与天然气工程—油气田开发工程]