摘要
利用自制的可视化模拟携砂装置,通过统计计算出砂量与加砂量之比（携砂率）,研究了3种不同黏度流体在定向井以及水平井中的携砂规律。结果表明,在不同井斜角、不同黏度的情况下,流体的携砂率是不一致的。当井斜角为45°时,低黏流体不利于携砂,提高流体黏度有利于提高携砂率;当井斜角为60~90°（大斜度及水平井段）时,高黏流体从沉积的岩屑床上方滑过,携砂率下降,而低黏流体能对岩屑床产生扰动作用,提高岩屑的携带效率。这项研究结果为定向井和水平井钻井液流变参数的选择提供了重要参考依据。
The sand-carrying law of three fluids with different viscosities in directional wells and horizontal wells was studied by using homemade visual analog device of sand-carrying to calculate the sand production and sanding proportion.The results showed that the fluid's sand-carrying rate was inconsistent in the case of different inclinations and viscosities.When the inclination was 45°,the low viscosity fluid was not conducive for sand-carrying,when its viscosity was raised,it was favorable for improving sand-carrying rate.When the inclination was in the range of 60~90°(in highly deviated and horizontal wells),the higher viscosity fluid flowed over the cuttings bed,it induced low cuttings-carrying rate.However,the low viscosity fluid could produce disturbance to the cuttings bed,improved the cuttings-carrying rate.This research provides an important reference for choosing the rheological parameters of drilling fluids in directional and horizontal wells.
出处
《长江大学学报（自科版）（中旬）》
2016年第2期54-57,6,共4页
Journal of Yangtze University(Nature Science Edition)
基金
中海油田服务股份有限公司科研项目(G1415CS-B21C012)
关键词
定向井
水平井
钻井液黏度
井斜角
模拟装置
携砂率
directional well
horizontal well
drilling fluid viscosity
inclinations
analog device
sand-carrying rate
