天然气地球科学 ›› 2021, Vol. 32 ›› Issue (2): 262267.doi: 10.11764/j.issn.1672-1926.2020.10.001
舒志国1(),刘莉1,梁榜1(),陆亚秋1,郑爱维1,包汉勇2
Zhi-guo SHU1(),Li LIU1,Bang LIANG1(),Ya-qiu LU1,Ai-wei ZHENG1,Han-yong BAO2
摘要:
页岩气已成为特低渗透储层中最重要的非常规能源之一,由于其独特的储层性质和多级水力压裂改造的共同作用,形成了复杂的多尺度流动机制。在物质平衡理论的基础上,采用五线性流模型的储层构造简化方式,依据储集容量和渗流特征关系将地层分为基质压力系统和裂缝压力系统,将具有“一井一藏”特征的页岩气井SRV分为基质压力系统和压裂裂缝压力系统,建立了一种基于物质平衡理论的页岩气井产能评价新方法,该方法能准确有效地评价页岩气井产能和地层能量的下降,证明了页岩气井裂缝缝网储集容量是真实存在的、不可忽略的。与RTA软件中的HZ Multifrac模型相比,提出的模型在涪陵页岩气田的典型生产井应用中取得了更准确的评价结果,准确匹配上了不同生产时期的实测井底流压和关井静压,能够为涪陵页岩气井合理配产制度的科学制定提供理论依据。
中图分类号:
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