新场须二裂缝性有水气藏产水特征及治水实践

doi:10.7657/XJPG20250215

摘要/Abstract

摘要：

针对新场须二气藏普遍产水，产水特征复杂，水侵模式认识不清，缺乏有效治水对策，稳产形势严峻等问题，基于气藏静态地质资料及生产动态数据，综合采用气藏工程理论方法、正交试验及开发实践经验总结，开展气藏产水特征分析，提出气井典型水侵模式，形成治水对策。研究结果表明：新场须二气藏产水特征复杂，5种类型并存，通过绘制图版可实现快速判断出水类型；水侵模式分为裂缝水窜型和缓慢突进型2种，裂缝发育程度及压裂改造规模是影响水侵模式的决定性因素；对裂缝水窜型应严控压差、均衡排水，对缓慢突进型应合理制度、局部堵水。

关键词: 新场须二气藏, 裂缝性有水气藏, 出水类型识别, 水侵模式, 治水对策

Abstract:

The T₃X² gas reservoir in the Xinchang structural belt, Sichuan Basin, suffers a lot of challenges such as widespread water production, complex water production characteristics, unclear water invasion patterns, and a lack of effective water control strategies, affecting the stable production. Based on geological data and production performance from the gas reservoir, and using the theories/techniques of gas reservoir engineering, orthogonal experiments and development practices, the water production characteristics of the gas reservoir were analyzed, typical water invasion patterns were clarified, and water control strategies for gas wells were proposed. The results show that the T₃X² gas reservoir has 5 types of water production which can be identified by plotting charts. The water invasion patterns are classified into: rapid water channeling along fractures and slow water advancing. The degree of fracture development and the scale of fracturing treatments are the key factors influencing water invasion pattern. For the pattern of rapid water channeling along fractures, controlling pressure difference and balancing water drainage are critical, while for the pattern of slow water advancing, rationalizing production system and localized water blocking are recommended.

Key words: T₃X² gas reservoir, fractured and watered gas reservoir, water production type identification, water invasion pattern, water control strategy

中图分类号:

TE371

曾慧, 易婷, 李兴文, 袁玥, 杨艾, 向雷. 新场须二裂缝性有水气藏产水特征及治水实践[J]. 新疆石油地质, 2025, 46(2): 246-252.

ZENG Hui, YI Ting, LI Xingwen, YUAN Yue, YANG Ai, XIANG Lei. Water Production Characteristics and Water Control Practices in T₃X² Fractured and Watered Gas Reservoir in Xinchang Structural Belt, Sichuan Basin[J]. Xinjiang Petroleum Geology, 2025, 46(2): 246-252.

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