气体驱动泵排液采气机理及应用试验
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摘要
针对气井的开发随着时间的延长会出现积液直至停产的问题,采用一种最经济的气田开发方式即利用气井自身能量实现积液井的正常生产。气体驱动泵排液采气是一新型的排液采气技术,详细阐述了其利用气体活塞面积大的特点放大气体压力并把积液排出井筒的机理,绘制了驱动泵体的内部结构示意图,分析了泵的主要参数计算方法。通过现场应用,验证了驱动泵的实际效果,分析了应用失败的原因,并进一步提出了泵的选井方式、应用条件和改进措施。
Along with extending the development time, liquid accumulation often appears in gas wells even to stop production. The most economic method is that these wells may provide themselves with energy to keep the liquid accumulation wells in a normal production. For a novel technology of gas drive pump to drainage gas recovery, the feature of gas piston with large area and the mechanism of enlarging gas pressure to drain liquid accumulation are presented. Moreover, an internal structure d of pump body is mapped out, and a method to calculate the main parameter is analyzed. And the effect of drive pump is validated by its application, and some reasons on its failure are analyzed. In addition, the well selecting methods, application condition, and improving measures are further made.
Along with extending the development time, liquid accumulation often appears in gas wells even to stop production. The most economic method is that these wells may provide themselves with energy to keep the liquid accumulation wells in a normal production. For a novel technology of gas drive pump to drainage gas recovery, the feature of gas piston with large area and the mechanism of enlarging gas pressure to drain liquid accumulation are presented. Moreover, an internal structure d of pump body is mapped out, and a method to calculate the main parameter is analyzed. And the effect of drive pump is validated by its application, and some reasons on its failure are analyzed. In addition, the well selecting methods, application condition, and improving measures are further made.
引文
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[4]易珍丽,候淞译,李延华,等.涩北二号疏松砂岩气田水侵特征分析[J].天然气技术与经济,2013,7(2):25-29.
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[2]王会强.边水气藏气井见水时间预测方法[J].特种油气藏,2008,15(4):73-75.
[3]汪周华,王子敦,邓丹,等.考虑重力及气体非达西效应影响的边水气藏边水突破时间预测模型[J].石油钻采工艺,2016,38(2):210-215.
[4]易珍丽,候淞译,李延华,等.涩北二号疏松砂岩气田水侵特征分析[J].天然气技术与经济,2013,7(2):25-29.
[5]刘双全,吴晓东,吴革生,等.气井井筒携液临界流速和流量的动态分布研究[J].天然气工业,2007,27(2):104-106.
[6]马海宾,冯朋鑫,王宪文,等.一种计算苏里格气田最小携液流量的方法[J].天然气技术与经济,2014,8(6):25-26.