井底流压对挥发油井产能的影响  

Effect of bottom-hole flowing pressure on productivity of volatile oil well

作　　者：吕红磊 LYU Honglei(Testing Branch of PetroChina Daqing Oilfield Co.Ltd.,Daqing,Heilongjiang 163412,China)

机构地区：[1]中国石油大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《油气井测试》2020年第6期62-67,共6页Well Testing

基　　金：中石油大庆油田有限责任公司科技研发项目“凝析油气藏试油压裂方法及配套工艺技术研究”(QR-AO-08-2017006)。

摘　　要：挥发油藏饱和压力接近地层压力、试油工作制度不合理等会永久破坏储层。为满足试油稳定求产、有效保护储层,利用大庆某探区F1和F2两口挥发油井实际地层资料和数值模拟方法,分析井底流压对挥发油井产能的影响,并给出规律性认识:挥发油井在试油过程中,尽量使井底流压大于挥发油藏饱和压力生产,避免挥发油迅速脱气破坏储层;若不能实现井底流压大于挥发油藏饱和压力生产,应选择井底流压接近饱和压力的最佳试油工作制度进行生产;在开发过程中,选择合理的开采方式,提高油井的采收率。该分析结果对科学有效地开发挥发油气藏具有重要的意义。Because the saturation pressure of volatile oil reservoir is close to formation pressure, if the working system of oil test is unreasonable, the reservoir will be destroyed permanently. In order to meet the requirements of stable production test and protect reservoir effectively, based on the actual formation data of two volatile oil wells F1 and F2 in a certain exploration area of Daqing Oilfield, the influence of bottom hole flow pressure on the productivity of volatile oil wells is analyzed by using numerical simulation method, and the regular knowledge is given: during the production test of volatile oil well, the bottom hole flow pressure should be greater than the saturation pressure of volatile oil reservoir, so as to avoid the rapid degassing of volatile oil and the damage of the reservoir. If the bottom hole flow pressure cannot be greater than the saturation pressure of volatile oil reservoir, the optimal production test system should be selected under the bottom hole flow pressure close to saturation pressure. During development, reasonable production mode should be selected to improve oil recovery. The analysis results are of great significance for the scientific and effective development of volatile oil and gas reservoirs.

关 键 词：挥发油气藏 井底流压 产能 IPR曲线 饱和压力 开采方式 工作制度 

分 类 号：TE353[石油与天然气工程—油气田开发工程]