钻井液处理剂璜化高分子化合物降解放出H_2S的途径研究

STUDY ON THE APPROACH OF H_2S RELEASED FROM DEGRADED SULFONATED POLYMER OF DRILLING MUD CONDITIONING AGENT

在高温或 ＳＲＢ或电解作用下，对水基钻井液中的处理剂磺化高分子化合物进行降解反应，试验证实分别释放出了Ｈ_２Ｓ，在室温下腐蚀产物为Ｆｅ_９Ｓ_８，在６０℃以上为ＦｅＳ，这种来源的Ｈ_２Ｓ同样是有害的，可能造成油井管的腐蚀并使钻井液性能变差。

At high temperature or SRB or electrolytic action, the sulfonated high molecular compound of water --based drilling mud conditioning agent is degraded releasing out H_2S. The corrosion products are Fe_9S_8 at room temperature, and FeS when temperature is above 60℃. The derived H_2S is also hazard.dus to the drilling string and casing, and may reduce the performance of drilling mud.