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地质通报  2010 

青海祁连山冻土区天然气水合物资源量的估算方法――以钻探区为例

, PP. 1310-1318

Keywords: 天然气水合物,资源量,估算方法,祁连山冻土,青海

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Abstract:

祁连山冻土区天然气水合物DK-1、DK-2、DK-3、DK-4号钻孔揭示,该区天然气水合物及其异常主要产出于破碎岩层裂隙中和砂岩孔隙中,根据不同的赋存类型分别赋予具体地质含义,并运用体积法建立了2种产状天然气水合物资源量的计算方法。基于野外地质观测统计数据和室内分析测试结果,在钻探区约40×104m2的范围内,计算得到砂岩孔隙中的天然气水合物资源量约为6.24×104m3天然气,破碎岩层裂隙中的天然气水合物资源量约为88×104m3天然气,总的资源量约为94.2×104m3天然气。可以看出,钻探区中产于破碎岩层裂隙中的天然气水合物资源量是主体,这与钻探中肉眼观察的结果一致。

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