Barriers. Placement & Verification Casing Section Removal Conductor Removal Data & Planning Intervention Equipment Well Inspection & Cement Condition
a 10 4 5 1 7  
b 4 2 3   6 2
c 6 5   2 2 2
d 7 4   1   2
e 7 2 1   2 1
f 5   1   6  
g 2 1     8  
h 4 3       2
i 2 1   1 3  
j 1     1 2  
k     1     1
l         2  
m       1