【摘要】 大牛地气田盒1段气藏储量丰度大,但整体动用率偏低,物性较差、非均质性强是动用程度较低的根本原因。常规测井数据对气层响应不明显,和评价过程的人为因素是影响气层有效评价的主因。通过测井、薄片分析、实验分析、试井等资料的综合分析,在总结气层特征与高产富集因素的前提下,探求定性、定量结合的办法对盒1段致密气进行方便、有效地评价。各参数权重分析结合高产富集因素分析结果显示,可利用重要参数对气层进行定性评价;选取关键井单采气层的测井、地质参数,建立定量分级评价模型,可对气层进行良好分级评价。气层单井、水平井产能数据与评价结果进行对比验证,认为气层综合评价方法可用于复杂致密砂岩气评价,评价结果可指导直井、水平井开发。更多还原

【Abstract】 Daniudi Gas Field He 1 member gas reservoir reserves in abundance,but the overall producting rate is low.Poor physical property,strong heterogeneity is the fundamental reason of low degree producting.The unclearly conventional logging response characteristics of gas reservoir and the great human factor mainly influenced the gas reservoir evaluation.On the basis of summarizing gas reservoir characteristics and the factor of gas accumulation and high production through comprehensive analysis of logging,thin sections,experimental analysis and well test data,we seek the qualitative and quantitative approach to effective and convenient evaluation of tight gas in H1 Member.The weight of parameters analysis combined with the factor analysis of gas accumulation and high production results suggested that gas reservoir could be qualitatively devided by several key factors.Gas reservoir can be effectively graded by the quantitative evaluation model,which be established by selected logging and geological parameters from key wells.Comparing result of production capacity and gas characteristics of plane and profile suggest the comprehensive evaluation method can be effectively utilized in tight gas reservoir evaluation,the evaluation results can be utilized to guide exploration and development for vertical wells and horizontal wells.更多还原