水侵型储气库多周期注采气水互驱在线核磁驱替实验

doi:10.3969/j.issn.1006-6535.2026.01.008

特种油气藏 ›› 2026, Vol. 33 ›› Issue (1): 66-74.DOI: 10.3969/j.issn.1006-6535.2026.01.008

水侵型储气库多周期注采气水互驱在线核磁驱替实验

杨小松¹, 曾大乾¹, 庞进², 张广权¹, 周春希², 朱思南¹, 吴桐桐², 张铭³

1.中国石化石油勘探开发研究院,北京 100083;
2.重庆科技大学,重庆 401331;
3.中国石油辽河油田分公司,辽宁盘锦 124010

收稿日期:2025-06-17 修回日期:2025-10-24 出版日期:2026-02-25 发布日期:2026-06-22
通讯作者: 庞进(1981—),男,教授,2003年毕业于西南石油学院石油工程专业,2015年毕业于中国石油大学(华东)油气田开发工程专业,获博士学位,现从事油气藏工程相关研究。
作者简介:杨小松(1976—),男,高级工程师,1996年毕业于西南石油学院资源勘察工程专业,2006年毕业于西南石油大学油气田开发工程专业,获博士学位,现从事油气田开发相关工作。
基金资助:
中国石化科技部项目“水侵型储气库注采运行规律与库容高效利用技术研究”(P23197);重庆市教委重点项目“复杂双层碳酸盐岩水侵气藏储气库渗流规律与注采能力研究”(KJZD-K202401507);重庆市自然科学基金“隔史层型混合页岩裂缝渗流规律研究及储层优选”(CSTB2023NSCQ-MSX0679)

Online NMR displacement experiment on gas-water mutual displacement during multi-cycle injection-production in a water-invaded gas reservoir

YANG Xiaosong¹, ZENG Daqian¹, PANG Jin², ZHANG Guangquan¹, ZHOU Chunxi², ZHU Sinan¹, WU Tongtong², ZHANG Ming³

1. Sinopec Petroleum Exploration and Production Research Institute, Beijing 100083, China;
2. Chongqing University of Science and Technology, Chongqing 401331, China;
3. Petrochina Liaohe Oilfield Company, Panjin, Liaoning 124010, China

Received:2025-06-17 Revised:2025-10-24 Online:2026-02-25 Published:2026-06-22

摘要/Abstract

摘要： 针对水侵型储气库多周期注采时气水互驱渗流机理复杂、有效储集空间演化规律不清晰等问题,选取文96储气库储5井岩心作为研究对象,开展了多周期气水互驱在线核磁共振驱替实验。通过实时监测T₂谱及信号分布特征,系统地分析了储层物性、驱替压力和注采速率对气水互驱效率的影响。结果表明:储层物性对气水互驱效率的影响显著,针对储层渗透率小于5.00 mD的低渗储层,经多周期注采后气体可动用孔隙体积下降约15%,而渗透率大于80.00 mD的储层多周期注采后气体可动用孔隙体积下降约2%,且孔隙体积缩减主要集中于前3个注采周期;驱替压力与可动空间成对数关系,临界压力约为17 MPa,低于此阈值时驱替效率显著降低,高于该值则流体分布趋于均质化;当注采速率提升至2.0 mL/min时,可动空间增加约7%,表明高速注采可通过增强驱动力减少流体滞留;多周期注采所引发的渗流滞后效应不断累积,将导致有效储集空间持续缩减。该研究为水侵型储气库的库址优选、注采参数的优化及运行效率的提升提供了理论依据与技术支撑。

关键词: 水侵型储气库, 多周期注采, 气水互驱, 在线核磁共振, 驱替实验

Abstract: Due to the complex gas-water mutual displacement flow mechanisms and insufficient understanding of the evolution of effective storage space during multi-cycle injection-production in water-invaded gas reservoirs,this study selected the core from Well 5 of Wen 96 Gas Storage as research object and carried out online nuclear magnetic resonance(NMR)displacement experiments under multi-cycle gas-water mutual displacement.By real-time monitoring of T₂ spectra and signal distribution characteristics,the effects of reservoir physical properties,displacement pressure,and injection-production rates on gas-water mutual displacement efficiency were systematically analyzed.The results indicate that reservoir properties have a significant impact:in low-permeability reservoirs with permeability below 5.00 mD,the recoverable gas pore volume decreases by about 15% after multi-cycle injection-production,whereas in high-permeability reservoirs with permeability above 80.00 mD,it decreases by only about 2%,with most of the pore volume reduction occurring in the first three cycles.Displacement pressure correlates logarithmically with recoverable space,and a critical pressure of around 17 MPa is identified.Below this threshold,displacement efficiency declines significantly,while above it,fluid distribution tends to become homogeneous.When the injection-production rate is increased to 2.0 mL/min,the movable space increases by about 7%,indicating that high-rate injection-production can reduce fluid entrapment by enhancing drive forces.The cumulative seepage hysteresis effect induced by multi-cycle injection-production continues to reduce effective storage space,a phenomenon calling for special attention in long-term operation.This study provides theoretical guidance and technical support for site selection optimization,injection-production parameter optimization,and operational efficiency improvement in water-invaded gas storage reservoirs.

Key words: water-invaded gas storage, multi-cycle injection-production, gas-water mutual displacement, online NMR, displacement experiment

中图分类号:

TE349

杨小松, 曾大乾, 庞进, 张广权, 周春希, 朱思南, 吴桐桐, 张铭. 水侵型储气库多周期注采气水互驱在线核磁驱替实验[J]. 特种油气藏, 2026, 33(1): 66-74.

YANG Xiaosong, ZENG Daqian, PANG Jin, ZHANG Guangquan, ZHOU Chunxi, ZHU Sinan, WU Tongtong, ZHANG Ming. Online NMR displacement experiment on gas-water mutual displacement during multi-cycle injection-production in a water-invaded gas reservoir[J]. Special Oil & Gas Reservoirs, 2026, 33(1): 66-74.

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水侵型储气库多周期注采气水互驱在线核磁驱替实验

Online NMR displacement experiment on gas-water mutual displacement during multi-cycle injection-production in a water-invaded gas reservoir

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