胺基聚醇AP-1和有机硅抑制剂GWJ及其复合剂对水合物生成的影响

Effects of Amino Polymeric Alcohol AP-1,Organic Silicon Inhibitor GWJ and Their Complex on the Hydrate Formation

利用自制装置,模拟深水钻井中的温度和压力,考察不同含量的胺基聚醇AP-1、有机硅抑制剂GWJ和胺基聚醇AP-1与有机硅抑制剂GWJ的复合剂对钻井液中水合物生成的影响。实验结果表明,当胺基聚醇AP-1含量为0.5%(w)时促进水合物的生成;当胺基聚醇AP-1含量为1.0%(w)或2.0%(w)时则抑制水合物的生成,且随胺基聚醇AP-1含量的增加,其对水合物生成的抑制作用增强;当有机硅抑制剂GWJ含量为2.0%(w)时促进水合物的生成,水合物生成速率随有机硅抑制剂GWJ含量的增加而降低;在初始压力7 MPa、初始温度4℃时,当添加胺基聚醇AP-1含量为2.0%(w)和有机硅抑制剂GWJ含量为2.0%(w)的复合剂时,水合物生成的诱导时间为580 min,有效抑制了水合物的生成。

The effects of amino polymeric alcohol AP-1 with different content, organic silicon inhibitor GWJ and their complex agents on the hydrate formation in drilling fluid were studied in a self-made experimental installation. The results showed that 0.5%（w） AP-1 could promote the hydrate formation, but 1.0%（w） and 2.0%（w） AP-1 would inhibited the hydrate formation and the inhibitory effect was enhanced with increasing the AP-1 content. 2.0%（w） GWJ could promote the hydrate formation, and the hydrate formation rate decreased with increasing the GWJ content. Under the conditions of initial pressure 7 MPa, and initial temperature 4 ℃, when the complex agent consisting of 2.0%（w） AP-1 and 2.0%（w） GWJ was used, the induction time for the hydrate formation was 580 min, which could inhibit effectively the hydrate formation in the system.