摘要
水力压裂过程中涉及到众多固液两相流问题,如使用压裂液将支撑剂输送至地层、压裂液返排时对支撑剂的携带等。由于目前使用的支撑剂密度多大于压裂液密度,支撑剂在随压裂液运动的同时会发生沉降。支撑剂在压裂液中的沉降速度直接关系到现场的工艺设计,因此有必要对支撑剂沉降进行深入研究。目前煤层气压裂主要为清水压裂。针对清水压裂,对常用支撑剂沉降模型的计算值与实验数据进行对比,最终优选出与实际符合最好的支撑剂沉降模型。
There exist a lot of issues about solid-liquid two-phase flow in hydraulic fracturing, such as fracturing fluid transporting proppants to the fomation or carrying them out while flowback. Proppant settling always occurs because its density is higher than fracturing fluid, and the settling velocity directly relates to the process design. Therefore, it is necessary to study the settlement of proppants. Currently, water fracturing has been widely used in coalbed methane. In this paper, calculated values of each model were compared with experimental data, the best model was selected ultimately.
出处
《当代化工》
CAS
2015年第6期1253-1256,共4页
Contemporary Chemical Industry
关键词
支撑剂
沉降模型
煤层气
proppant
settling model
coalbed methane
