上交换式防气抽油泵的研制与应用
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摘要
针对油田常规防气抽油泵寿命短以及防气效果不理想的问题,研制了上交换式防气抽油泵。该泵采用在泵筒上部开设换气槽结构,在工作过程中当抽油泵柱塞下端行至换气槽及以上位置时,下泵腔与油管腔连通,下泵腔内的气体与油管腔实现充分交换,从而减少气体的不利影响。该泵适用于不同气油比油井原油的开采,具有防气效果佳、结构合理、可靠性高以及使用寿命长等优点。现场试验结果表明,上交换式防气抽油泵在高气油比油井中下泵一次性成功率100%,与普通抽油泵相比,泵效平均提高了7.3%。上交换式防气抽油泵的研制成功为高气油比油井的开采提供了新的技术手段。
To address the issues of conventional anti-gas pump like short life and low anti-gas effect,the upper switching anti-gas oil pump has been developed. The pump has a ventilation slot structure in the upper cylinder. When the lower end of pump plunger reaches the ventilation slot and its upper position,the lower pump chamber communicates with the tubing chamber,the gas achieves full exchange,thereby reducing the adverse effects of the gas. The pump is suitable for wells with different gas-oil ratio,presenting the advantages of good anti-gas effect,reasonable structure,high reliability and long life. Field test shows that the upper switching anti-gas oil well pump has a onetime lowering success rate of 100% at high gas-oil ratio wells,and enhanced average pump efficiency of 7. 3% compared with the conventional pump. This anti-gas pump provides a new technical mean for producing high GOR oil well.
To address the issues of conventional anti-gas pump like short life and low anti-gas effect,the upper switching anti-gas oil pump has been developed. The pump has a ventilation slot structure in the upper cylinder. When the lower end of pump plunger reaches the ventilation slot and its upper position,the lower pump chamber communicates with the tubing chamber,the gas achieves full exchange,thereby reducing the adverse effects of the gas. The pump is suitable for wells with different gas-oil ratio,presenting the advantages of good anti-gas effect,reasonable structure,high reliability and long life. Field test shows that the upper switching anti-gas oil well pump has a onetime lowering success rate of 100% at high gas-oil ratio wells,and enhanced average pump efficiency of 7. 3% compared with the conventional pump. This anti-gas pump provides a new technical mean for producing high GOR oil well.
引文
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