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The influence of tectonic evolution on the accumulation and enrichment of coalbed methane(CBM)

机译：构造演化对煤层气（CBM）富集与富集的影响

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摘要

The current accumulation and enrichment of CBM reservoir is a result of the preservation and destruction of former CBM, after the superposing evolution of reversing-and-uplifting and the subsequent evolution within the coal-hearing basin. The critical moment of the CBM reservoir formation is the time when the burying depth of the overlying net thickness amounts to the least in geological history after the gas generation of coal beds. Except the coal-bearing basins of lower netamorphism, most basins suffered the evolution stage of reversion and uplift. The formation of the CBM reservoir is controlled by the beginning and lasting time, and the intensity of reversing and uplifting. The tectonic evolution after reversing and uplifting also affects the accumulation of CBM in coal-bearing basin. The CBM constantly dissipates in the area of chronically uplifting and de-nudating. The area developed overlying sedimentation is advantageous to the preservation of CBM, but also can lead to the reduction of CBM saturation.
机译：煤层气盆地内反转抬升叠加演化及后续演化后，煤层气储集层目前的富集与富集是对原有煤层气进行保存和破坏的结果。煤层气储层形成的关键时刻是煤层气生成后上覆净厚度的埋藏深度达到地质历史上最小的时间。除了含碳量较低的含煤盆地外，大多数盆地都经历了逆转和隆升的演化阶段。煤层气储层的形成受开始和持续时间，以及反转和抬升强度的控制。逆转抬升后的构造演化也影响了含煤盆地煤层气的成藏。煤层气不断散布在长期隆起和消亡的地区。沉积物上方形成的区域有利于煤层气的保存，但也会导致煤层气饱和度的降低。

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