| 蔡路,姚艳斌,全贵龙,陈华,陈庆刚,李勇,杜胜江.贵州织金平桥向斜煤层气储层地质特征及有利开发层优选[J].贵州地质,2016,33(4):278-283 |
| 贵州织金平桥向斜煤层气储层地质特征及有利开发层优选 |
| Geological Characteristics of Coal Reservoir in PingQiao Syncline of Zhijin，Guizhou Province and Favorable Horizons Evaluation |
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| DOI： |
| 中文关键词: 贵州织金 平桥向斜 PQT-1井 煤层气 有利开发层 |
| 英文关键词:Zhijin GuiZhou Province Pingqiao syncline PQT-1 CBM Favorable horizons evaluation |
| 基金项目:国家自然科学基金“煤储层流体微观相互作用的动态地质效应”（41472137）；贵州省科技计划社会攻关项目“煤系非常规天然气（煤系气）富集规律研究”（黔科合[2016]支撑28074）。 |
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| 中文摘要: |
| 基于平桥向斜地面地质调查，PQT-1井钻、录、测井及取芯测试资料的分析，对该区煤储层地质特征进行了总结，并深入探讨了有利开发层与煤厚、煤间距、显微组分、灰分产率和含气性特征之间的对应关系。研究结果表明：PQT-1井纵向上8套主力煤层呈“厚度小、层数多、间距近”的特征，适合“分层压裂，多层合采”的开发工艺。其中，C14与C16组合煤厚大、含气量适中、灰分产率较低、解吸压差较小，为最有利煤层气开发层；C30与C32组合、C17与C20组合受制于煤厚，为第二、第三有利煤层气开发层。 |
| 英文摘要: |
| Based on the geological survey in Pingqiao syncline, this paper analyzes the drilling, logging date and Coring test data of the Well PQT-1 to summarize the geological characteristics of coal reservoir in the area. Furthermore, the relationship between favorable formation for development and key parameters were deeply discussed，including coal thickness, coal pitch, micro components, ash yield and gas content. The results show that eighth sets of main seam featured “small thickness, multi layers, close interval” in vertical of Well PQT-1, which make it suitable forthe development process of separate fracturing and co-production. Among the eighthsets, theC14 and C16stratas characterized with great thickness coal, moderate gas content, low ash yields and small desorption pressure were evaluated the most favorable layers. Limited to the coal thickness, theC30 , C32 two strata and the C17 , C20 two stratas take the second and the third place respectively. |
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