中国石油大学学报（自然科学版）2011，Vol.35Issue(4)：144-149,6.DOI:10.3969/j.issn.1673-5005.2011.04.027
煤层气井气体对有杆泵排采的影响
Effect of gas on sucker rod pump for coalbed methane well
摘要
Abstract
The mathematical model of gas and water two phase flow was developed, and the calculation method of volumetric efficiency was obtained for sucker rod pumps on the basis of the two phase flow theory in coalbed methane ( CBM) wells. The variation of dynamic fluid level and volumetric efficiency under different operating conditions and the relationships of volumetric efficiency with stroke, inlet gas-liquid ratio and inlet pressure of the pump, were developed based on the numerical solution and simulation analysis of well liquid into the pump in CBM wells. The condition of gas lock and its preventive measures were given under low submergence depths by combining the relationship of clearance volume factor and pressure in pump with polytropy of gas expansion flow. Hie results show that die volumetric efficiency is increased by reducing stroke, clearance volume and inlet gas-liquid ratio of pump, and increasing the submergence pressure. And the inlet gas-liquid ratio of pump has a large impact on pump efficiency. The volumetric efficiency decrease* with the clearance volume factor increasing when the gas in clearance space is taken into account.关键词
煤层气井/有杆泵/充满度/气水两相流/仿真分析Key words
coalbed methane well/ sucker rod pump/ volumetric efficiency/ gas and water two phase flow/ simulation analysis分类
能源科技引用本文复制引用
刘新福,吴建军,綦耀光,赵培华..煤层气井气体对有杆泵排采的影响[J].中国石油大学学报（自然科学版）,2011,35(4):144-149,6.基金项目
国家科技重大专项课题(2011ZX05038-002) （2011ZX05038-002）
山东省科技发晨计划项目(2009GG10007008) （2009GG10007008）
中层石油大学(华东)研究生创新基金项目(CXZD11-09) （华东）
