油气储运
油氣儲運
유기저운
2001年
2期
32-34
,共3页
原油%加剂原油%低温流动性%低速剪切%影响%机理%实验研究
原油%加劑原油%低溫流動性%低速剪切%影響%機理%實驗研究
원유%가제원유%저온류동성%저속전절%영향%궤리%실험연구
通过对室内模拟管流低速剪切流动参数的测试和蜡晶显微观察，研究了低速剪切对不同原油低温流动性的影响及对蜡晶影响之间的关系。研究表明，不同组成的原油，低速剪切对蜡晶的影响不同，低速剪切既能破碎蜡晶聚集体，又能形成蜡晶聚集体。管道流动过程中的“恢复”现象实质就是管流低速剪切改善加剂原油低温流动性的表现，其机理是管流的低速剪切使得高速剪切后破碎的蜡晶聚集体重新形成
通過對室內模擬管流低速剪切流動參數的測試和蠟晶顯微觀察，研究瞭低速剪切對不同原油低溫流動性的影響及對蠟晶影響之間的關繫。研究錶明，不同組成的原油，低速剪切對蠟晶的影響不同，低速剪切既能破碎蠟晶聚集體，又能形成蠟晶聚集體。管道流動過程中的“恢複”現象實質就是管流低速剪切改善加劑原油低溫流動性的錶現，其機理是管流的低速剪切使得高速剪切後破碎的蠟晶聚集體重新形成
통과대실내모의관류저속전절류동삼수적측시화사정현미관찰，연구료저속전절대불동원유저온류동성적영향급대사정영향지간적관계。연구표명，불동조성적원유，저속전절대사정적영향불동，저속전절기능파쇄사정취집체，우능형성사정취집체。관도류동과정중적“회복”현상실질취시관류저속전절개선가제원유저온류동성적표현，기궤리시관류적저속전절사득고속전절후파쇄적사정취집체중신형성
By means of shear simulation, tests of flow parameters and polarized microscopic observation ,this paper studied the relation between the influence on the wax crystal and that on the low-temperature flow properties of the PPD-treated wax crude due to the low rate shear. It has been experimentally confirmed that the influence caused by the low rate shear on the wax crystal varies from the different crude. It not only can destroy the wax crystal congeries ,but also can prompt their formation. The fluidity recovery during the pipeline flow is essentially the exhibition of the low temperature flow properties improvement of the PPD-treated waxy crude due to the low rate shear during the pipeline flow,the mechanism of which is that the congeries ,which are broken after high rate shear,gather again under the pipe flow shear.
