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针对常规热洗清蜡法存在洗井周期短、易造成油层污染,热洗难度大而热洗效率较低的问题,提出了“两测、一停”热洗操作法。采用该方法,可有效提高热洗质量,降低热洗用液量,减少油层污染,降低热洗费用的特点。本文通过现场实践对辽河油田茨榆坨采油作业二区铁17区块7口井进行了试验性洗井,试验结果表明,与常规热洗方式相比,油井的单次入井液量下降、单次热洗费用降低、油井热洗后恢复期缩短、热洗周期延长,在油井产量未发生变化前提下,各项热洗指标都明显变好,见效显著,建议将此种热洗清蜡方式在全区推广应用。
Aiming at the problems of conventional hot wash and wax removal methods, such as short washing cycle, easy to pollute the oil layer, difficult to hot-wash and low heat-washing efficiency, a hot-wash operation method of “two measurements and one stop” was proposed. By adopting the method, the quality of the hot washing can be effectively improved, the volume of the hot wash liquid can be reduced, the pollution of the oil layer can be reduced, and the heat washing cost can be reduced. In this paper, experimental wells were drilled in seven wells of Tie17 block in the Second District of Ziyu Tuo Oilfield in Liaohe Oilfield. The experimental results show that compared with the conventional hot-cleaning method, Wash costs reduced, the oil wells after the hot wash shorten the recovery period, hot wash cycle extended under the premise of the oil well production did not change, the hot wash indicators were significantly better, effective noticeable, it is recommended this hot wash waxing method in the whole District promotion and application.