摘要
基于测井曲线划分的煤体结构 ,利用聚类分析将两淮煤田各矿井煤体结构划分为原生结构 碎裂煤 (Ⅰ类 )、碎斑煤(Ⅱ类 )和糜棱煤 (Ⅲ类 ) 3种类型。根据煤层气试井资料 ,建立了煤储层渗透率与Ⅱ、Ⅲ类构造煤厚度百分比之间的数学模型 ,并依据Ⅱ、Ⅲ类构造煤的发育程度 ,将煤储层渗透率划分为高、中、低渗 3个级别。在上述分析和研究的基础上 ,探讨了两淮煤田Ⅱ、Ⅲ类构造煤和低渗区的分布特征 ,为煤层气勘探选区避开煤体结构强烈破碎、煤储层可改造性差的区段指明了方向。
Based on coalbody structures classified by log curves, coalbody structures of various mines in Huaibei and Huainan coal fields were divided into primary constructional coal-ruptuired coal, mortor coal and mylonitic coal utilizing cluster analysis method. In the light of the data of coalbed methane testing well, a methematical model between coal reservoir permeability and the accumulative percent of thickness of tectonic coal Ⅱ and Ⅲ is set up. With the development degree of tectonic coal Ⅱ and Ⅲ,coal reservoir permeability is consistently classified into high, medium and low. On the basis of the above, distributing characteristic of tectonic coal Ⅱ & Ⅲ and low permeability are discussed, and the way is showed clearly for keeping away from the sections where coalbody structure is intensively broken up and coal reservoir is hardly changed.
出处
《测井技术》
CAS
CSCD
2003年第2期140-143,共4页
Well Logging Technology
基金
国家自然科学基金--科学部主任基金 :40 2 4 2 0 1 2
关键词
测井曲线
划分
煤体结构
预测
煤储层
渗透率
煤层气
coal reservoir coalbody structure log curve permeability Huaibei and huainan coal fields
