TY -的AU - Su,小明AU -丽安,Zhanghua盟——元,元PY - 2019 DA - 2019/07/22 TI -研究油水比的影响的流变特性羟乙基纤维素(HEC) SP - 7405702六世- 2019 AB -羟乙基纤维素(HEC)是广泛应用于水基钻井液增粘剂由于其良好的流动性,稳定,携砂能力,和良好的储层保护,虽然有不足的流变性质在更高的温度。为了利用其优势和提高热稳定性,一个创新的方法,提出了HEC乳液中溶解。研究表明,与传统的水溶液相比,油水乳液作为解决方案可以有效地改善流变特性和热稳定性。油水比例对流变特性具有明显的影响。首先,减少油水比、表观粘度和剪切应力下降;其次,在恒定的油水比例或温度、剪切速率越大,表观粘度越低,抗剪强度越大;最后在极低的剪切速率下,HEC乳液的粘度达到超过50000 mPa·s,可有效解决砂带的问题困难和容易形成砂床在水平井和高角孔。此外,乳化稳定性和油水比的增加使下降的。退化不明显的油水比例不到30时:70。相反,性能急剧下降,当油水比例大于30:70。 The separator liquid was more than 2 cm and was even about 1/3 when the oil-water was 50 : 50. On the basis of analysis of the experimental results, we can see that oil-water emulsion could effectively improve the rheological stability and thermal stability of HEC and the optimal oil-water ratio was 30 : 70. This study provided a new thought for application of HEC or other polymers in drilling fluid. SN - 1468-8115 UR - https://doi.org/10.1155/2019/7405702 DO - 10.1155/2019/7405702 JF - Geofluids PB - Hindawi KW - ER -