摘要：Abrasive waterjet (AWJ) fracturing has become an accepted horizontal multistage stimulation technique due to its flexibility and high efficiency of extensive fracture placement. The downhole tool failure of AWJ fracturing becomes an issue in the massive hydraulic fracturing because of high velocity and proppant erosion. This paper proposed a 3D computational fluid dynamics (CFD)-based erosion model by considering high-velocity waterjet impact, proppant shear erosion, and specific inner structure of hydra-jet tool body. The discrete phase approach was used to track the proppant transport and its concentration distribution. Field observation provides strong evidence of erosion patterns and mechanisms obtained from CFD simulation. The results show that the erosion rate has a space dependence in the inner wall of the tool body. The severe erosion areas are primarily located at the entries of the nozzle. Evident erosion patterns are found including a 'Rabbit's ear' erosion at the upper-layer nozzles and a half bottom loop erosion at the lower-layer nozzles. Erosion mechanisms attribute to high flow velocity at the entry of nozzles and the inertia force of proppant. Sensitivity analysis demonstrates that the pumping rate is a primary factor contributing to erosion intensity.

关键字：Hydraulic fracturing Erosion Computational fluid dynamics (CFD) Waterjet

ISSN号：1672-5107

卷、期、页：卷: 17 期: 3 页: 701-711

发表日期：2020-06-01

影响因子：2.095600

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）

发表期刊名称：PETROLEUM SCIENCE

参与作者：贾云鹏

通讯作者：张怡,高世旺

第一作者：盛茂,黄中伟,田守嶒

论文类型：期刊论文

论文概要：盛茂,黄中伟,田守嶒,张怡,高世旺,贾云鹏，CFD analysis and field observation of tool erosion caused by abrasive waterjet fracturing，PETROLEUM SCIENCE，2020，卷: 17 期: 3 页: 701-711

论文题目：CFD analysis and field observation of tool erosion caused by abrasive waterjet fracturing