| 四川盆地上三叠统隔气式气驱产水模式 |
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| 引用本文： | 陆正元,李颖,彭轩,龚昌明.四川盆地上三叠统隔气式气驱产水模式[J].成都理工大学学报(自然科学版),2010,37(2):113-119. |
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| 作者姓名： | 陆正元 李颖 彭轩 龚昌明 |
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| 作者单位： | 油气藏地质及开发工程国家重点实验室(成都理工大学),成都,610059;中国石油西南油气田分公司川中油气矿区,四川,遂宁,629001 |
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| 基金项目： | 四川省重点科技项目(07JY029-144) |
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| 摘 要： | 通过四川盆地中部上三叠统裂缝性储层地质和开发动态的综合研究,认为气井产水能量主要受控于被水体分隔的天然气膨胀驱动,不同于一般气藏中的水体侵入。由于地层水和天然气的黏度存在显著差异,在较大压差开发条件下,具有高流度的被分隔空间天然气或多或少能够突破底部水体窜入井底采出,分隔空间的气水界面并非均匀下降,气窜是产出分隔天然气的主要方式。开发过程中的气水产量变化的影响因素包括气井所在的储气空间和被水体分隔的其他储集空间的天然气储量、分隔水体的体积和分隔阻力以及生产井的产量,这些因素的相互配置关系由井孔储层在裂缝系统中的位置所决定。提高气井排水能力、加大生产压差为分隔空间天然气突破水体创造条件,是产出分隔空间天然气提高有水气藏采收率的主要途径。
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| 关 键 词： | 川中 上三叠统 隔气式气驱水 裂缝系统 有限水体 |
Model of gas driving water production by compartment-gas in Upper Triassic in Sichuan Basin of China |
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| LU Zheng-yuan,LI Ying,PENG Xuan,GONG Chang-ming.Model of gas driving water production by compartment-gas in Upper Triassic in Sichuan Basin of China[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2010,37(2):113-119. |
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| Authors: | LU Zheng-yuan LI Ying PENG Xuan GONG Chang-ming |
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| Institution: | LU Zheng-yuan1,LI Ying1,PENG Xuan2,GONG Chang-ming2 1.State Key Laboratory of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu 610059,China,2.Central Sichuan Gas Field,Southwest Branch of CNPC,Suining 629001 |
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| Abstract: | On the basis of a comprehensive study of fracture reservoir geology and performance,it is believed that the water production is mainly controlled by the function of the elastic expansion energy of the gas compartmentalized by the water in the gas pool of the Upper Triassic sandstone in Central Sichuan,which is different from the water drive in the conventional gas pool with bottom or side water.Because of the viscosity difference between formation water and gas,the compartmentalized gas with the high mobili... |
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| Keywords: | Central Sichuan Upper Triassic water drive by compartment-gas fracture system finite aquifer |
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