| 三维实验模拟双水平井联合法开采天然气水合物 |
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| 引用本文： | 冯景春,李小森,王屹,张郁,李刚,陈朝阳.三维实验模拟双水平井联合法开采天然气水合物[J].现代地质,2016,30(4):929-936. |
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| 作者姓名： | 冯景春 李小森 王屹 张郁 李刚 陈朝阳 |
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| 作者单位： | 1中国科学院天然气水合物重点实验室, 广东 广州510640；
2中国科学院广州能源研究所天然气水合物研究中心，广东 广州510640；
3广东省新能源和可再生能源研究开发与应用重点实验室，广东 广州510640；4中国科学院大学，北京100049 |
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| 基金项目： | 国家杰出青年基金项目（51225603）；国家自然科学基金项目（51406210，51476174）；国家海洋地质专项（GHZ2012006003）；中国科学院重点部署项目（KGZD-EW-301-2）；中国石油-中国科学院科技合作项目（2015A-4813） |
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| 摘 要： | 为研究联合法开采天然气水合物，在水合物三维实验开采模拟平台中利用双水平井进行降压联合注温水开采水合物实验，得到温度和压力分布、产气、产水、三相饱和度变化与开采方法的传热特性。整个开采过程可以分为自由气释放阶段、静置阶段、降压开采阶段和注热开采阶段。研究结果表明在自由气释放阶段和静置阶段有二次水合物生成。在注热阶段，水合物在降压和注热的协同作用下进行分解。反应釜中的水合物最终被完全分解，并且本研究的能效比高于前人利用垂直井进行降压联合热吞吐分解水合物的能效比，表明利用双水平井进行降压联合注温水是一种有效的分解水合物的方法。
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| 关 键 词： | 三维 水合物 分解 联合法 双水平井 传热特性 |
Three-dimension Experimental Investigation of Hydrate Dissociation by the Combined Method with Dual Horizontal Wells |
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| FENG Jingchun,LI Xiaosen,WANG Yi,ZHANG Yu,LI Gang.Three-dimension Experimental Investigation of Hydrate Dissociation by the Combined Method with Dual Horizontal Wells[J].Geoscience——Journal of Graduate School,China University of Geosciences,2016,30(4):929-936. |
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| Authors: | FENG Jingchun LI Xiaosen WANG Yi ZHANG Yu LI Gang |
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| Institution: | 1Key Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou,
Guangdong510640, China
2Guangzhou Center for Gas Hydrate Research, Guangzhou Institute of Energy Conversion,
Chinese Academy of Sciences, Guangzhou, Guangdong510640, China|
3Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, Guangdong510640, China
4University of Chinese Academy of Sciences, Beijing100049, China |
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| Abstract: | Depressurization in conjunction with warm water injection with dual horizontal wells was employed to investigate the gas production performance of hydrate dissociation in a cubic three dimension simulator. Based on the process of pressure and temperature changing with time, the experiment can be divided into four sections,i.e. the free gas release stage, the quiescence stage, the depressurization stage and the injection stage. The experimental results showed that hydrates formed a second time in the free gas release stage and the quiescence stage. In the injection stage, the hydrate was dissociated under the synergistic effect of depressurization and thermal stimulation. The change of the hydrate/gas/water saturation indicates that the hydrate can be dissociated completely. In addition, the energy ratio in this study is higher than that in the previous study by the vertical well with the Huff and Puff method. |
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| Keywords: | three dimension hydrate dissociation combined method dual horizontal wells heat transfer characteristic |
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