DL-超深低漏整简抽油泵的研制与应用
China Petroleum Machinery（2009）
Abstract
针对常规抽油泵在泵挂深度超过2200 m进行深抽时抽油泵漏失和易失效的问题,研制了DL-超深低漏整筒抽油泵.该抽油泵由内泵筒、外泵筒、连通孔、柱塞和固定阀连接而成,内泵筒的内外侧均处在油管内液体之中,内泵筒的内外侧不存在压差,消除了常规抽油泵的"鼓胀效应",从根本上减少了抽油泵的间隙漏失.现场试验表明,超深低漏整筒抽油泵能明显减少漏失量.中原油田现场应用的4口井中,平均单井日增液2.6 t,日增油1.2 t,泵效提高11%,己阶段性增油560 t,创经济效益224万元.
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Key words
superdeep low leakage oil well pump,internal and external pressure differential,leakage,ballooning effect
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