利用相渗曲线探索递减率随含水率变化呈现的规律

doi:10.13809/j.cnki.cn32-1825/te.2025.01.014

油气藏评价与开发 ›› 2025, Vol. 15 ›› Issue (1): 110-115.doi: 10.13809/j.cnki.cn32-1825/te.2025.01.014

利用相渗曲线探索递减率随含水率变化呈现的规律

马培申¹(), 孙宜丽¹, 舒政², 谭夜强¹, 余强³, 张薇¹, 吴长虎¹, 齐勇²()

1.中国石化河南油田分公司勘探开发研究院，河南南阳 474780
2.西南石油大学油气藏地质及开发工程全国重点实验室，四川成都 610500
3.中国石化河南油田分公司采油一厂，河南南阳 474780

收稿日期:2024-04-11 发布日期:2025-01-26 出版日期:2025-02-26
通讯作者: 齐勇 E-mail:mapeishen@sina.com;2062478871@qq.com
作者简介:马培申（1968—），男，本科，高级工程师，从事油气田开发研究工作。地址：河南省南阳市桐柏县埠江镇河南油田，邮政编码：474780。E-mail：mapeishen@sina.com
基金资助:
国家科技重大专项子课题“海上平台聚合物快速溶解技术研究”(2016ZX05025-003-008)

Study on variation in decline rate with water cut using relative permeability curves

MA Peishen¹(), SUN Yili¹, SHU Zheng², TAN Yeqiang¹, YU Qiang³, ZHANG Wei¹, WU Changhu¹, QI Yong²()

1. Research Institute of Exploration and Development, Sinopec Henan Oilfield Compary, Nanyang, Henan 474780, China
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
3. No.1 Oil Production Plant, Sinopec Henan Oilfield Compary, Nanyang, Henan 474780, China

Received:2024-04-11 Online:2025-01-26 Published:2025-02-26
Contact: QI Yong E-mail:mapeishen@sina.com;2062478871@qq.com

摘要/Abstract

摘要：

为探究油田开发过程中不同含水率阶段产量递减率的变化情况。基于相渗曲线，研究了递减率、含水上升率、含水率三者之间的关系，建立了注采平衡的条件下递减率与含水率的关系，最后针对厚层油藏Z和多层油藏S进行实例计算分析。研究结果表明：在注采平衡的理想条件下，某一含水率阶段递减率受采液速度、束缚水饱和度的共同影响。递减率随着含水率的上升呈抛物线式变化，且递减率与采液速度成正比关系。在油藏确定的条件下，产量递减率大小主要由采液速度的大小决定，可通过调整井网密度、注采井数比等影响采液速度的参数控制产量递减。通过建立递减率与含水率的变化关系，明确产量递减变化规律的影响因素，为减缓产量递减对策提供依据。

关键词: 递减率, 相渗曲线, 含水率, 含水上升率, 采液速度

Abstract:

To investigate the variation of production decline rate at different water cut stages during oilfield development, this study explored the relationship between decline rate, water cut rise rate, and water cut based on relative permeability curves. The relationship between decline rate and water cut under injection-production balance conditions was established, followed by computational analyses on a thick oil reservoir Z and a multi-layer oil reservoir S. The results showed that, under ideal injection-production balance conditions, the decline rate at a certain water cut stage was jointly influenced by liquid production rate and irreducible water saturation. The decline rate exhibited a parabolic trend with increasing water cut and was proportional to the liquid production rate. For a given reservoir under known conditions, the magnitude of the production decline rate was primarily determined by the liquid production rate and could be controlled by adjusting parameters such as well spacing density and the ratio of injection to production wells, which affected the liquid production rate. By establishing the relationship between decline rate and water cut, factors influencing production decline are clarified, providing a basis for strategies to mitigate production decline.

Key words: decline rate, relative permeability curve, water cut, water cut rise rate, liquid production rate

中图分类号:

TE34

马培申,孙宜丽,舒政等. 利用相渗曲线探索递减率随含水率变化呈现的规律[J]. 油气藏评价与开发, 2025, 15(1): 110-115.

MA Peishen,SUN Yili,SHU Zheng, et al. Study on variation in decline rate with water cut using relative permeability curves[J]. Petroleum Reservoir Evaluation and Development, 2025, 15(1): 110-115.

图/表 9

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利用相渗曲线探索递减率随含水率变化呈现的规律

Study on variation in decline rate with water cut using relative permeability curves

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