煤层气与常规天然气测试技术的异同  

Differences of Well Testing Between CBM and Conventional Gas Well

作　　者：刘曰武[1] 赵培华 鹿倩 方惠军[3] 徐建平[4] 蒋华[4] 林学敏[4] 

机构地区：[1]中国科学院力学研究所,北京100190 [2]中石油煤层气有限责任公司,北京100028 [3]中国科学院广州地球化学研究所,广东广州510640 [4]大港油田测试公司,天津300270

出　　处：《油气井测试》2010年第6期6-11,共6页Well Testing

基　　金：国家重大专项"大型气田及煤层气开发"专项支持;课题编号2009ZX05038001

摘　　要：煤层气测试资料的分析成果对确定煤层气的排采制度和制订合理的开发方案是至关重要的,研究该问题的目的在于解决目前只能利用常规方法进行测试、常规软件进行测试资料解释的问题。煤储层在成份、结构及其物理力学性质上与常规储层(如砂岩)有着明显的差异;煤层气的赋存和采出机理与砂岩中天然气也有着本质区别。要获取煤层准确参数、正确评价煤层,必须研究煤层气测试的相关理论方法。但目前对煤层气测试的认识较少。从常规天然气测试与煤层气测试的差异对比的角度出发,给出了煤层气测试的诸多特征。从研究对象的储层特征、煤层气的赋存特征以及不同开发阶段的流体分布及流动特征等方面,论述了煤层气与常规天然气测试技术异同的根本原因。从测试方法、测试工艺、解释模型和资料分析方法等方面,分析了煤层气与常规天然气测试技术的差异。研究成果对充分认识和理解煤层气测试的重要作用有积极的意义。The analysis results of well test data are significant important for ascertaining the well completion method of CBM and arranging the development plan.The purpose of this paper is to solve the well test problems that CBM test process and data analysis method only use all be used for the conventional gas by now.The coalbed is distinctly different from the conventional gas reservoir(e.g.sand formation) in aspects of component,structure,physical and dynamics property.The storage form and production mechanism in CBM are intrinsic different from that in conventional gas.In order to get the accurate parameter and evaluate coal bed exactly,the related theoretical approach for CBM well test which is known less must be researched.Therefore,comparing the CBM well test with the conventional natural gas test,characteristics of CBM well test are proposed in the paper.The paper discussed the fundamental reasons of difference between CBM well test technology and conventional gas,which was researched in reservoir characteristics,storage characteristics,fluid distribution characteristics in various stage and so on.The distinction of CBM test technology and conventional natural gas was analyzed in detail from test method,test technics,interpretation model to material analytic method.The research results have positive significance to comprehend and understand CBM well test adequately.

关 键 词：煤层气井 油气井 试井 

分 类 号：P618.11[天文地球—矿床学]