WATER WELL DRILLING 101 FOR
GENERAL EXAM
drilling,xinstallationxofxcasing,xplacingxwellxscreens,xgrouting,xDEVELOPMENTx-xans-
✔✔Wellxconstructionxisxcomprisedxofxthexfollowingxcomponets?
10'xisxcodex-xans-✔✔Minimumxgroutingxdistance?
ArtesianxpressurexisxthexresultxofxgravityxandxthexconfiningxAquiferx-xans-
✔✔ArtesianxWell
CONFININGxLayerx(top)
CONFINEDxAQUIFERx(middle)
IMPERMEABLExLayerx(bottom)x-xans-✔✔ArtesianxWellxLayers
Cablextool,xAirxrotary,xMudxrotary,xReversexcirculationxrotary,xJettingx&xDrivingx-xans-
✔✔Typesxofxdrillingxtechniques
ISxTHExACTxOFxINJECTINGxCERTAINxSUBSTANCESxINTOxVOIDxSPACExTOxREDU
CExORxELIMINATExTHEIRxPERMEABILITY,xCONSOLIDATExORxINCREASExTHEIRx
STRENGTH.
(Fillingxspacexbetweenxthexcasingxandxborexholexwithxcementxorxclay)x-xans-
✔✔GROUTING
Tremiexpipexoutsidexcasing,
Tremiexpipexinsidexcasing,
CasingxmethodxorxHalliburtonxmethodx-xans-✔✔MethodsxofxGroutingxinclude
CementxandxWater,x5.5xtox6galxofxh20xtox1xcubicxfootxofxPortlandxcementxwithx3%xbent
onitextoxpreventxshrinkagex-xans-✔✔NeatxCementxRatio
Groutxplacedxthroughxsmallxpipexoutsidexcasing,
Centeringxguidesxarexplacedxalongxlengthxofxcasing,
Lowerxendxofxcasingxhasxdrillablexplug,
Casingxheldxdownxbyxrigxsoxitxdoesn'txfloat,
Shallowxwellsxaxpositivexdisplacementxpumpxcanxbexused.x-xans-
✔✔TremiexPipexOutsidexCasing
GENERAL EXAM
drilling,xinstallationxofxcasing,xplacingxwellxscreens,xgrouting,xDEVELOPMENTx-xans-
✔✔Wellxconstructionxisxcomprisedxofxthexfollowingxcomponets?
10'xisxcodex-xans-✔✔Minimumxgroutingxdistance?
ArtesianxpressurexisxthexresultxofxgravityxandxthexconfiningxAquiferx-xans-
✔✔ArtesianxWell
CONFININGxLayerx(top)
CONFINEDxAQUIFERx(middle)
IMPERMEABLExLayerx(bottom)x-xans-✔✔ArtesianxWellxLayers
Cablextool,xAirxrotary,xMudxrotary,xReversexcirculationxrotary,xJettingx&xDrivingx-xans-
✔✔Typesxofxdrillingxtechniques
ISxTHExACTxOFxINJECTINGxCERTAINxSUBSTANCESxINTOxVOIDxSPACExTOxREDU
CExORxELIMINATExTHEIRxPERMEABILITY,xCONSOLIDATExORxINCREASExTHEIRx
STRENGTH.
(Fillingxspacexbetweenxthexcasingxandxborexholexwithxcementxorxclay)x-xans-
✔✔GROUTING
Tremiexpipexoutsidexcasing,
Tremiexpipexinsidexcasing,
CasingxmethodxorxHalliburtonxmethodx-xans-✔✔MethodsxofxGroutingxinclude
CementxandxWater,x5.5xtox6galxofxh20xtox1xcubicxfootxofxPortlandxcementxwithx3%xbent
onitextoxpreventxshrinkagex-xans-✔✔NeatxCementxRatio
Groutxplacedxthroughxsmallxpipexoutsidexcasing,
Centeringxguidesxarexplacedxalongxlengthxofxcasing,
Lowerxendxofxcasingxhasxdrillablexplug,
Casingxheldxdownxbyxrigxsoxitxdoesn'txfloat,
Shallowxwellsxaxpositivexdisplacementxpumpxcanxbexused.x-xans-
✔✔TremiexPipexOutsidexCasing