超稠油潜油电泵尾管装置的研制与应用　　

Development and application of the tail pipe device for ultra-heavy oil submersible pump

杜林辉 刘玉国 刘瑞 睢芬 涂东

DU Linhui LIU Yuguo LIU Rui SUI Fen TU Dong

中国石油化工股份有限公司西北油田分公司塔河采油二厂，新疆轮台　841604

No. 2 Oil Production Plant, Tahe Oilfield, Northwest Sub. Corporation, SINOPEC, Luntai 841604, China

塔河油田超稠油电泵井受掺入稀油的不稳定性、稀稠油混配效果差影响，电泵运行工况极不稳定，故障停机井次多，运行寿命低，且现有技术水平难以动用原油黏度100×104 mPa·s以上、黏温拐点3 500 m以下井储量。为改善电泵运行工况，延长运行寿命及动用超稠油井储量，从改善稀稠油混配效果及确保超稠油能够顺利入泵出发，研制了电泵加装尾管装置，并进行了5井次矿场试验。试验表明：该装置能够提高稀稠油混配效果，改善电泵运行工况，动用超稠油井储量，在稠油电泵井中具有广阔的应用前景。

Affected by the instability of mixed light oil and the poor mixing effect of thin and heavy oil, the ultra-heavy oil electric submersible pump in Tahe oilfield was characterized by extremely unstable operation condition, more fault shutdown times, low running life and difficult to develop the well reserves by the current technical level, which oil viscosity is more than 100 × 104 mPa·s and viscosity-temperature inflection point is deeper than 3 500 m. In order to improve the pump operating condition, extend the running life and increase the reserves of ultra-heavy oil produced by mechanical lifting. From the aspects of improving the dilute heavy oil mixing effects and ensuring super heavy oil could smoothly enter into the pump, a pump installed tail pipe device was developed, and was applied in five wells in field. The results show that: the device is able to enhance dilute heavy oil mixing effects, improve the pump operating condition and produce ultra-heavy oil reserves. The pump has broad application prospects in the heavy oil wells.