| 四川古蔺DCMT-3井排采曲线特征及开发前景分析 |
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| 引用本文： | 尹中山,肖建新,汪威.四川古蔺DCMT-3井排采曲线特征及开发前景分析[J].中国煤炭地质,2012(1):13-16. |
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| 作者姓名： | 尹中山 肖建新 汪威 |
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| 作者单位： | 四川省煤田地质局,四川成都610072 |
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| 摘 要： | 川南煤田大村矿段煤层气地面抽采试验井DCMT-3排采曲线特征显示见气较快，达到工业产能时间（高于1000m3／d）超过6个月，且降产幅度缓慢，属低产稳定型煤层气井，已累计产气超过50万m3。依据DCMT-3井生产期间的产气量、压力等变化规律，通过储层特征、经济投入分析认为，大村矿段煤层气具有较好的商业开发前景。建议采用同走向不同水平线状布井，加快开展清洁压裂液试验，以提高单井或井组产能，将发挥综合社会经济效益。实现古叙矿区等煤田的安全开采。
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| 关 键 词： | DCMT-3井 低产稳定型 含煤层气系统 线状布井 清洁压裂液 |
Analysis of DCMT-3 Well Drainage Curve Characteristics and Exploitation Prospect, Gulin, Sichuan |
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| Yin Zhongshan,Xiao Jianxin and Wang Wei.Analysis of DCMT-3 Well Drainage Curve Characteristics and Exploitation Prospect, Gulin, Sichuan[J].Coal Geology of China,2012(1):13-16. |
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| Authors: | Yin Zhongshan Xiao Jianxin and Wang Wei |
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| Institution: | (Sichuan Bureau of Coal Geological Exploration, Chengdu, Sichuan 610072) |
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| Abstract: | The drainage curve characteristics of CBM surface exploitation test well in the Dacun sector, South Sichuan coalfield have revealed fast CBM intersection, over 6 months of industrial capacity （≥ l000m3/d） reached duration, and slower capacity reducing range, thus belong to low-yielding and steady type CBM well, cumulative production of CBM over half million cubic meters. On the basis of CBM output and pressure variation patterns, analyzed reservoir characteristics and economic investment, have considered that the CBM in Dacun sector has better commercial development prospect. Suggestions of different level linear well spacing along the strike, speeding up clean fracturing fluid testing to improve single well or well group capacity, thus can exert integrated social and economic benefits, realize safe coal mining in the Gulin-Xuyong mining area and other coalfields. |
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| Keywords: | DCMT-3 well low-yielding and steady type CBM-bearing system linear well spacing clean fracturing fluid |
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