西南石油大学学报（自然科学版）2025，Vol.47Issue(4)：113-120,8.DOI:10.11885/j.issn.1674-5086.2023.02.20.02
疏松砂岩有水气藏产量劈分新方法
A New Production Splitting Method for Unconsolidated Sandstone Gas Reservoir with Water
王国锋 1王小鲁 2奎明清 2赵辉 2苗苗2
作者信息
- 1. 南方石油勘探开发有限责任公司,广东 广州 510240
- 2. 中国石油青海油田分公司,甘肃敦煌 736202
- 折叠
摘要
Abstract
Production splitting is a prerequisite for the accurate description of multilayer gas reservoirs.However,KH me-thod,mutation method,gas production profile test and other production splitting methods commonly used at present have some problems,such as low accuracy and no long-term dynamic production splitting.In order to solve the problems,the iterative calculation was carried out by combining the stress-sensitive productivity equation and the material balance equation consid-ering the influence of water sealed gas,and automatic fitting method was used to fit the production history,the optimal fitting parameters were obtained,and A new production splitting method for unconsolidated sandstone gas reservoir with water was innovatively proposed.The results show that when laminar coefficient and turbulent coefficient of the combined production zone are different,the contribution rate curve presents an"X"type trend;when dynamic reserves of the combined production zone are different,the contribution rate curve of production presents a"＜"type trend;the greater the difference between lami-nar coefficient,turbulent coefficient and dynamic reserves,the greater the difference between production contribution rates.Through the case analysis of a gas well in Sebei-2 Gas Field,it is found that the research results show that the production split-ting result for unconsolidated sandstone gas reservoir with water is similar to the test result of gas production profile(average error 4.70％),and the contribution rate of production can be obtained in real time.关键词
应力敏感/有水气藏/水封气/多层合采/产量劈分Key words
stress sensitivity/gas reservoir with water/water sealed gas/multilayer commingled/production splitting分类
能源科技引用本文复制引用
王国锋,王小鲁,奎明清,赵辉,苗苗..疏松砂岩有水气藏产量劈分新方法[J].西南石油大学学报（自然科学版）,2025,47(4):113-120,8.
