摘要
根据悬点示功图,判断油井的气影响与油气比、沉没度、井深等多种因素有关.根据抽油泵游动阀的开启条件,考虑采油后期的实际状况,推导柱塞滞后位移的修正计算公式,编制计算程序并应用于现场测试井.结果表明,采用悬点示功图判断气体对泵效的影响存在误差,应采用柱塞滞后位移公式的计算结果判断油井的气影响,尤其是当柱塞位移为0.05～0.40m时.
Hydrocarbon effect in the well bore is closely related to many kinds of factors,such as oil-gas ratio,submergence depth,hole depth when the water ratio surpass 90 percent the analysis of polished rod diagram.Based on the opening condition of oil well pump traveling valve,considering the reality of late oil extraction,the computational formulas of plunger lagged displacement are deduced,and computation program is compiled to apply to measuring wells on-the-spot.It indicates that there exist errors when judging the influence of gas to pump efficiency by polished rod diagram,so formula of plunger displacement to judge hydrocarbo effect in well bore,especially the plunger displacement is between 0.05 and 0.4 m should be used.
出处
《大庆石油学院学报》
CAS
北大核心
2008年第1期54-56,121,共3页
Journal of Daqing Petroleum Institute
关键词
油气比
悬点示功图
滞后位移
影响因素
oil-gas ratio
polished rod diagram
lagged displacement
influencing factor
