CAJ | 학술논문

通过建立煤层裂隙、含气性等与其弹性参数关系，进一步理清了瓦斯富集与储层弹性参数变化量之间的内在联系——煤层瓦斯含量与煤层速度、密度呈现负相关特征。以典型的煤矿采区实测数据为基础，计算了5个煤层弹性参数随煤层中瓦斯的吸附量变化关系，结果表明：煤层中瓦斯含量与密度呈现出负相关性；与密度变化量、剪切模量变化量、拉梅常数变化量及AVO检测因子4个参数呈现正相关关系。在三维地震研究区采用与瓦斯含量呈正相关的4个弹性参数对瓦斯富集区分别进行了预测。引入综合评价因子，建立其与4种岩性反演结果相关的一次线性函数，并绘制4弹性参数综合预测瓦斯富集区成果图，达到预测煤层瓦斯富集区的目的。
통과건립매층렬극、함기성등여기탄성삼수관계，진일보리청료와사부집여저층탄성삼수변화량지간적내재련계——매층와사함량여매층속도、밀도정현부상관특정。이전형적매광채구실측수거위기출，계산료5개매층탄성삼수수매층중와사적흡부량변화관계，결과표명：매층중와사함량여밀도정현출부상관성；여밀도변화량、전절모량변화량、랍매상수변화량급AVO검측인자4개삼수정현정상관관계。재삼유지진연구구채용여와사함량정정상관적4개탄성삼수대와사부집구분별진행료예측。인입종합평개인자，건립기여4충암성반연결과상관적일차선성함수，병회제4탄성삼수종합예측와사부집구성과도，체도예측매층와사부집구적목적。
Based on relationship between coal seam fissure, gas-bearing property and elastic parameters, sorted out further internal log?ic between gas enrichment and coal reservoir elastic parameter variation—coal seam gas content and velocity, density present negative correlation features. On the basis of typical coalmine winning district measured data, computed variation of 5 coal seam elastic parame?ters along with the adsorbance variation. The result has shown that coal seam gas content and density is negatively correlated;with 4 pa?rameters of density, shear modulus, Lame constant variations and AVO detection factors present positive correlation. In 3D seismic prospecting study area, using 4 elastic parameters positively correlated with gas content carried out gas enrichment area prediction re?spectively. Introduced factors of comprehensive assessment, established 4 lithologic inversion results one-off correlation function, and plotted 4 elastic parameters comprehensively predicted gas enrichment area result map, and finished with comprehensive prediction of coal seam gas enrichment area target.