Abstract 7075 aluminum alloy is widely used in the aerospace field, and its use process is
subjected to serious corrosion environment. This study aims to explore the influence …

Impact cracks near the borehole are beneficial to geothermal energy development in many
aspects, such as hydraulic fracturing, perforation and so on. However, the quantitative …

As a flexible crushing technology, the high-pressure water jet breaking concrete has unique
advantages in the aspect of safety, quality and environment protection in contrast with …

Perforation is critical to create a flow pathway between a shale reservoir and the production
casing for hydraulic fracturing. However, the damage characteristics of shales by abrasive …

Abrasive water jet (AWJ) technology is one of the fastest growing methods of cutting
materials in recent years. Because percussion drilling can cause numerous impact cracks …

In order to improve the efficiency and safety of shield machine cutting reinforced concrete
piles, abrasive waterjets (AWJs) assisted mechanical combined cutting technology is …

Various casing perforation methods are used to ensure a hydrodynamic reservoir-to-well
connection. However, perforated wells often do not perform satisfactorily during production …

Air DTH (Down-The-Hole) hammer percussion drilling (vibration percussion drilling) has
proven to be a highly efficient geothermal drilling technique, and percussion fractures near …

We investigated a vibro-impacting indenter interacting with strata in the form of metal or rock
samples experimentally and via mathematical modelling. An experimental programme was …

Different scholars had carried out much research on rock damage during perforation by
numerical simulation or experiment, but they had not considered the influence of metal jet …