煤层气选区评价方法探讨——以准噶尔盆地南缘为例

发布时间：2018-01-12 07:24

本文关键词：煤层气选区评价方法探讨——以准噶尔盆地南缘为例　出处：《煤炭学报》2017年04期 　论文类型：期刊论文

【摘要】：煤层气选区评价历来是煤层气勘探的一个重要环节,其中评价方法的选择关系到能否准确命中目标靶区,近年来的选区评价方法从定性评价逐渐发展为定量评价。以准噶尔盆地南缘为评价区,从定性—半定量—定量评价的思路方法着手,首先选取了典型的5种评价方法,系统地论述了其在煤层气评价选区中的利弊,发现定性评价方法仍有着其广泛运用的空间,虽然现有的定量评价方法进一步降低了主观因素影响,但这5种评价方法均不同程度地存在着主观性、经验性判断。在对这5种方法进行异同点总结的基础之上,笔者进一步引进了主成分分析法这一定量评价方法,避免了主观因素影响,优选出四工河—大黄山区段为有利区段,与前述5种方法结果相同,表明主成分分析法运用于煤层气选区评价是合理可靠的,完全避免了主观因素的影响成为其选区评价的最大优点。在综合分析了各评价方法的优缺点之后,提倡运用初步定性判断—定量评价研究—定性评价验证的思路来进行煤层气的选区评价。
[Abstract]:The evaluation of CBM selection is always an important link in CBM exploration, and the selection of evaluation method is related to whether or not to hit the target accurately. In recent years, the method of constituency evaluation has gradually developed from qualitative evaluation to quantitative evaluation. Taking the southern margin of Junggar Basin as the evaluation area, the idea of qualitative-semi-quantification-quantitative evaluation is taken as the starting point. Firstly, five typical evaluation methods are selected, and the advantages and disadvantages of them in the evaluation district of CBM are systematically discussed, and it is found that the qualitative evaluation method still has its wide application space. Although the existing quantitative evaluation methods further reduce the impact of subjective factors, but these five evaluation methods have different degrees of subjectivity. Empirical judgment. On the basis of summing up the similarities and differences of the five methods, the author further introduced the principal component analysis (PCA), a certain amount of evaluation method, to avoid the influence of subjective factors. The section of Sigonghe-Dawangshan is selected as favorable section, which is the same as the five methods mentioned above, which indicates that the application of principal component analysis to the evaluation of coal-bed methane district is reasonable and reliable. Completely avoid the influence of subjective factors to become the biggest advantage of its constituency evaluation. After comprehensive analysis of the advantages and disadvantages of each evaluation method. The idea of preliminary qualitative judgment, quantitative evaluation research and qualitative evaluation verification should be used to evaluate the selection of CBM.
【作者单位】：中国矿业大学(北京)地球科学与测绘工程学院;
【基金】：中国地调局地质调查资助项目(1211302108025-4)
【分类号】：P618.13
【正文快照】： 我国煤层气资源量巨大,经过近十几年的迅速发展,我国煤层气的勘探开发已取得了较大突破,从中高煤阶煤层气成功开发到低煤阶煤层气勘探开发取得重大进展,煤层气选区评价方法的地位日益突出,能否准确地运用合理的评价方法是煤层气商业开发者最为关心的问题之一。煤层气的选区评

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