NGWA - Study Questions and answers - General Drilling
Exam
ArtesiangPressuregisggenerally...g-gans✔✔...gagresultgofggravitygandgconfininggbeds.
Whatgisgtruegaboutgthegorigingofgrocks?g-
gans✔✔1.gSandstonesgweregoncegsandgdepositsgandgcouldghavegbeengrivergsand,gbeachgsands,
gorgdunegsands.
2.gSomeglimestonesgcontaingfossilsgbecausegtheygweregoncegthegmuckygbottomsgofgshallowgse
as.
3.gShalesgweregoncegclaygbeds.
Sedimentarygformationsgmaygreachgdepthsgofgagmilegorgmore.
(T/F)gGroundgwater,glikegsurfacegwater,ghasgagtendencygtogflowgdownhill.g-gans✔✔True.
Thegthreegmaingtypesgofgrockgare...g-gans✔✔...gigneous,gsedimentary,gandgmetamorphic.
Watergwouldgbegleastglikelygfoundgingwhatggeologicalgformation?g-gans✔✔Granite.
(T/F)gMoregthang90%gofgourgnation'sgfreshgwatergisgunderground?g-gans✔✔True.
Priorgtogsettinggthegrig,gyougshould...g-
gans✔✔1.gMakegsuregtheregaregnogoverheadgpowerglinesgwithingatgleastg20'gofgthegmast.
2.gLocategallgburiedgmaterials.
3.gVerifygyougaregongthegrightgpropertygandgmeetgthegcorrectgsetbackgrequirements.
, Confinedgspacegentrygrulesgrequire...g-gans✔✔1.gShoringgofgtrenchgwallsgoverg4'gdeep.
2.gEstablishmentgofgbuddygsystem.
3.gHavegdriller'sgassistantgcheckgjacksgasgoperatorglevelsgrig.
Ingsettinggupgandglevelinggthegrig,gthegrightgproceduregisgto...g-
gans✔✔1.gUsegsuitablegjackgpadsgforgstabilization.
2.gPositiongriggforgminimumgleveling.
3.gHavegdriller'sgassistantgcheckgjacksgasgoperatorglevelsgrig.
(T/
F)gAgwellgmaygbegusedgasgsewagegdisposalgsitegonlygifgitgisgcasedgtogthegbottomgofgthegborehol
e.g-gans✔✔False.
Whengconsideringgthegwellgsite,gthegmoregimportantgthinggtogconsidergisgthe...g-
gans✔✔...gplacegwheregitgisgleastglikelygtogbegcontaminated.
Airgforcedgdowngthegdrillgpipe...g-gans✔✔...gclearsgdrillgcuttings.
Thegbestgmethodgtogdrillgagdomesticgwatergsupplygwellgingcavernousghardgrockgwouldgbe...g-
gans✔✔...gcablegtool.
Thegadvantage(s)gofgreversegcirculationgdrillingginclude(s)...g-
gans✔✔...gporositygandgpermeabilitygaregrelativelygundisturbed.
Thegfollowinggdrillgriggisgthegleastgacceptablegtogdrillgthroughgagconsolidatedgshalegingsandston
egformation...g-gans✔✔...gagbucketgrig.
Exam
ArtesiangPressuregisggenerally...g-gans✔✔...gagresultgofggravitygandgconfininggbeds.
Whatgisgtruegaboutgthegorigingofgrocks?g-
gans✔✔1.gSandstonesgweregoncegsandgdepositsgandgcouldghavegbeengrivergsand,gbeachgsands,
gorgdunegsands.
2.gSomeglimestonesgcontaingfossilsgbecausegtheygweregoncegthegmuckygbottomsgofgshallowgse
as.
3.gShalesgweregoncegclaygbeds.
Sedimentarygformationsgmaygreachgdepthsgofgagmilegorgmore.
(T/F)gGroundgwater,glikegsurfacegwater,ghasgagtendencygtogflowgdownhill.g-gans✔✔True.
Thegthreegmaingtypesgofgrockgare...g-gans✔✔...gigneous,gsedimentary,gandgmetamorphic.
Watergwouldgbegleastglikelygfoundgingwhatggeologicalgformation?g-gans✔✔Granite.
(T/F)gMoregthang90%gofgourgnation'sgfreshgwatergisgunderground?g-gans✔✔True.
Priorgtogsettinggthegrig,gyougshould...g-
gans✔✔1.gMakegsuregtheregaregnogoverheadgpowerglinesgwithingatgleastg20'gofgthegmast.
2.gLocategallgburiedgmaterials.
3.gVerifygyougaregongthegrightgpropertygandgmeetgthegcorrectgsetbackgrequirements.
, Confinedgspacegentrygrulesgrequire...g-gans✔✔1.gShoringgofgtrenchgwallsgoverg4'gdeep.
2.gEstablishmentgofgbuddygsystem.
3.gHavegdriller'sgassistantgcheckgjacksgasgoperatorglevelsgrig.
Ingsettinggupgandglevelinggthegrig,gthegrightgproceduregisgto...g-
gans✔✔1.gUsegsuitablegjackgpadsgforgstabilization.
2.gPositiongriggforgminimumgleveling.
3.gHavegdriller'sgassistantgcheckgjacksgasgoperatorglevelsgrig.
(T/
F)gAgwellgmaygbegusedgasgsewagegdisposalgsitegonlygifgitgisgcasedgtogthegbottomgofgthegborehol
e.g-gans✔✔False.
Whengconsideringgthegwellgsite,gthegmoregimportantgthinggtogconsidergisgthe...g-
gans✔✔...gplacegwheregitgisgleastglikelygtogbegcontaminated.
Airgforcedgdowngthegdrillgpipe...g-gans✔✔...gclearsgdrillgcuttings.
Thegbestgmethodgtogdrillgagdomesticgwatergsupplygwellgingcavernousghardgrockgwouldgbe...g-
gans✔✔...gcablegtool.
Thegadvantage(s)gofgreversegcirculationgdrillingginclude(s)...g-
gans✔✔...gporositygandgpermeabilitygaregrelativelygundisturbed.
Thegfollowinggdrillgriggisgthegleastgacceptablegtogdrillgthroughgagconsolidatedgshalegingsandston
egformation...g-gans✔✔...gagbucketgrig.
