渤海某油田电脱水器中乳化液的防治

Resolution of the Emulsion in Electric Dehydrator of Bohai Oilfield

王 晶 徐 超 呼文财 王 欣

WANG Jing，XU Chao，HU Wencai，WANG Xin

针对渤海某油田电脱水器中乳化液问题，分析了乳化液的来源、成因及在电脱中积累的原因，并找到了现场电脱水器中乳化液不断累积问题的解决办法。研究结果表明，电脱水器中乳化液是由于铁与胶质、沥青质形成了复杂高分子化合物而导致，向乳化液中加入盐酸或四羟甲基硫酸磷（THPS）均可破坏铁和胶质、沥青质所形成的复杂化合物，使有机铁变为无机铁，从而溶于水中。现场THPS加注试验结果表明，向电脱水器中加入90mg/L的THPS能解决电脱水器中乳化液的生成及积累的问题。表3参8

In order to solve the emulsion problem in electric dehydrator of Bohai oilfield，the origin，cause and accumulation of the emulsion was analyzed and the resolution of emulsion accumulation of was found out. The lab tests showed the emulsion was caused by the compound of the ferric iron，colloid and asphaltenes，the formed compound could be destroyed when the hydrochloric acid or THPS were added into the emulsion，as a result，the organic ferric was transformed into inorganic ferric，making the ferric dissolve into the water. The field trial showed the emulsion accumulation problem in the electric dehydrator could be resolved when the THPS was injected at dosage of 90 mg/L.

10.19346/j.cnki.1000-4092.2019.04.032