| 煤层气试井设计方法 |
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| 引用本文： | 唐书恒. 煤层气试井设计方法[J]. 煤田地质与勘探, 1999, 27(2): 29-31,28. |
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| 作者姓名： | 唐书恒 |
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| 作者单位： | 中国煤田地质总局第一勘探局 邯郸 056004 |
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| 基金项目： | 煤炭科学基金,国家自然科学基金 |
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| 摘 要： | 注入压降试井可以获取煤层气储层的重要参数。注入的压力、排量以及注入和压降段的时间是关系到试井成功与否的关键因素。用实例说明了如何进行煤层气井的注入压降试井设计。
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| 关 键 词： | 煤层气 注入压降 试井 设计 |
| 收稿时间： | 1998-10-05 |
DESIGN OF COAL BED METHANE WELL TEST |
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| Tang Shuheng. DESIGN OF COAL BED METHANE WELL TEST[J]. COAL GEOLOGY & EXPLORATION, 1999, 27(2): 29-31,28. |
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| Authors: | Tang Shuheng |
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| Affiliation: | No.1 Exploration Bureau, China National Administration of Coal Geology |
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| Abstract: | On the basis of deformation mechanics,the paper promotes FEM program for the displacement and strain calculation of elastic,homogenous rock layers under mining,and realizes the coupling analysis of large deformation strain and fissure net permeability according to relations between displacement of rock layer and breadth of fissure.There is a model analysis and calculation for the change of fissure permeability of roof rock layers under mining.The results show that vertical fissure permeability increases about 4 times,and horizontal one decreases about 4 times under the condition of nonconsidering roof rock layers break.That is to say,the deformation in roof rock layer have a great influence on the fissure permeability. |
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| Keywords: | finite deformation fisstured medium permeability coupling models |
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