Abstract: Because of asphaltine deposition, in some oil wells, there was serious asphaltine plugging. For this problem, a highly-efficient asphaltine plugging remover was developed. One component with strong penetration ability could make asphaltine deposition disperse to small asphaltine particles. Oil-soluble cationic surfactant could absorb small asphaltine particles onto the surface, which could prevent the clustering of these asphaltine particles. An efficient solvent for asphaltine was also added. The result indicated that the asphaltine plugging remover could disperse and dissolve the asphaltine deposition effectively, on the average, 81.1% of asphaltine deposition could been dissolved in this asphaltine plugging remover at 70℃, the ability was better than that of samples from market, and a good result was also obtained in field tests.

Key words: petroleum, asphaltine, deposition, dissolution, asphaltine plugging remover

摘要： 塔河油田部分油井存在沥青质严重沉积堵塞井筒的问题,针对这一问题研制了一种高效沥青分散解堵剂,强渗透分散组分能够有效地渗透分散沥青质颗粒,油溶性阳离子表面活性剂能够吸附在沥青质颗粒表面增加稳定性,高效溶剂能够部分溶解沥青质。结果表明:沥青分散解堵剂能够有效地溶解分散沥青质,70℃下平均溶解效率为81.1%,高于其他市售药剂,现场试验取得较好的效果。

关键词: 石油, 沥青质, 沉积物, 溶解, 沥青解堵剂