Earth & Environmental Sciences
fracture initiation
100%
perforation
84%
hydraulic fracturing
71%
borehole
58%
cement (construction material)
47%
azimuth
23%
well
16%
fracture orientation
16%
fracture geometry
16%
geometry
15%
fracture propagation
15%
tortuosity
14%
in situ stress
13%
oil well
13%
gas well
13%
rock property
13%
numerical method
11%
tunnel
10%
mechanical property
10%
trajectory
9%
drilling
9%
hydrocarbon
8%
world
6%
modeling
5%
Chemical Compounds
Boreholes
81%
Hydraulics
55%
Cements
30%
Geometry
13%
Well drilling
10%
Hydrocarbons
9%
Hydraulic fracturing
8%
Oil wells
8%
Numerical methods
6%
Stress concentration
6%
Rocks
6%
Analytical models
6%
Gases
6%
Tunnels
6%
Trajectories
5%
Engineering & Materials Science
Boreholes
81%
Hydraulics
55%
Cements
30%
Geometry
13%
Well drilling
10%
Hydraulic fracturing
8%
Oil wells
8%
Hydrocarbons
6%
Numerical methods
6%
Stress concentration
6%
Rocks
6%
Analytical models
6%
Tunnels
6%
Trajectories
5%