drilling33
mining29
drill24
diameter23
pipe21
casing19
shear17
pump17
cement17
psi16
density16
analysis16
method16
mud16
fluid15
wells15
equation15
gas15
pressure15
vertical15
clay15
solids15
cos14
surface14
drilled14
oil14
rig13
wellbore13
borehole13
fracture13
fluids13
flow12
liner12
slurry12
slope12
mines12
rotary12
annular12
velocity12
coal12
stress12
mineral12
api12
rock12
fig12
methods11
minerals11
friction11
ore11
shale11
annulus11
joint10
failure10
hole10
tubing10
design10
stresses10
string10
blasting10
wmf10
Terms
1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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18
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19
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20
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21
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22
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23
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24
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25
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26
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27
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28
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29
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30
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31
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32
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33
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34
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35
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36
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37
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38
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39
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40
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41
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42
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43
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44
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45
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46
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47
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48
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49
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50
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