| 煤层气有限导流压裂井的压力动态分析 |
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| 引用本文： | 陈伟 段永刚 谢军. 煤层气有限导流压裂井的压力动态分析[J]. 西南石油大学学报(自然科学版), 2000, 22(1): 47-50. DOI: 10.3863/j.issn.1000-2634.2000.01.013 |
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| 作者姓名： | 陈伟 段永刚 谢军 |
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| 作者单位： | 1.西南石油学院计算机科学系,四川 南充 637001; 2.西南石油学院完井技术中心; 3.四川石油管理局 |
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| 摘 要： | 针对煤层气产出过程中的降压、解吸、扩散、渗流等特点,应用非稳态解吸模型;研究了煤层气在基质和割理中的单相流动;建立了新的有限导流压裂井评价模型;讨论了裂缝壁面表皮系数、吸附系数、裂缝储容系数和窜流系数对压力动态的影响;分析了煤层气压裂井的压降典型曲线特征和参数估计方法,从而为煤层气藏开发提供了可靠的数据。
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| 关 键 词： | 煤层气 压裂井 有限导流 非稳态解吸模型 动态分析 |
| 收稿时间： | 1999-03-09 |
TRANSIENT PRESSURE ANALYSIS OF FINITE-CONDUCTIVITY FRACTURED WELL FOR COALBED METHANE |
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| CHEN Wei DUAN Yong-gang XIE jun. TRANSIENT PRESSURE ANALYSIS OF FINITE-CONDUCTIVITY FRACTURED WELL FOR COALBED METHANE[J]. Journal of Southwest Petroleum University(Seience & Technology Edition), 2000, 22(1): 47-50. DOI: 10.3863/j.issn.1000-2634.2000.01.013 |
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| Authors: | CHEN Wei DUAN Yong-gang XIE jun |
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| Affiliation: | Southwest Petroleum Inst |
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| Abstract: | Based on the characteristics of the pressure declining, desorption, diffusion and fluid flow in the process of coalbed methane from matrix of coal seam. Applying the non-equilibrium desorption methods in the paper, we studied the singlephase flow of coalbed methane in coal matrix and cleat, and es-tablished a new evaluation model for finite conductivity fractured well of coalbed methane. The paper described the effect of the factors of fracture face damage skin, adsorption, fracture storage, and interporosity flow on transient pressure performance. Finally, the characteristics of typical curves for coalbed methane and parameter estimation were discussed. It gets thereliable supports for coalbed methane reservoir development. |
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| Keywords: | coalbed methane fractured well finite conductivity non-equilibrium adsorption model transient pressure analysis |
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