with complete solutions 2025
Well jconstruction jconsists jof jthe jfollowing jcomponents? j- jANS✓✓-drilling,
jinstallation jof jcasing, jplacing jwell jscreens, jgrouting, jDEVELOPMENT
Minimum jgrouting jdistance? j- jANS✓✓-10' jis jcode
Artesian jWell j- jANS✓✓-Artesian jpressure jis jthe jresult jof jgravity jand jthe
jconfining jAquifer
Artesian jWell jLayers j- jANS✓✓-CONFINING jLayer j(top)
CONFINED jAQUIFER j(middle)
IMPERMEABLE jLayer j(bottom)
Types jof jdrilling jtechniques j- jANS✓✓-Cable jtool, jAir jrotary, jMud jrotary,
jReverse jcirculation jrotary, jJetting j& jDriving
GROUTING j- jANS✓✓-IS jTHE jACT jOF jINJECTING jCERTAIN jSUBSTANCES jINTO
jVOID jSPACE jTO jREDUCE jOR jELIMINATE jTHEIR jPERMEABILITY,
jCONSOLIDATE jOR jINCREASE jTHEIR jSTRENGTH.
(Filling jspace jbetween jthe jcasing jand jbore jhole jwith jcement jor jclay)
Methods jof jGrouting jinclude j- jANS✓✓-Tremie jpipe joutside jcasing,
Tremie jpipe jinside jcasing,
Casing jmethod jor jHalliburton jmethod
Neat jCement jRatio j- jANS✓✓-Cement jand jWater, j5.5 jto j6gal jof jh20 jto j1 jcubic
jfoot jof jPortland jcement jwith j3% jbentonite jto jprevent jshrinkage
Tremie jPipe jOutside jCasing j- jANS✓✓-Grout jplaced jthrough jsmall jpipe joutside
jcasing,
Centering jguides jare jplaced jalong jlength jof jcasing,
Lower jend jof jcasing jhas jdrillable jplug,
Casing jheld jdown jby jrig jso jit jdoesn't jfloat,
Shallow jwells ja jpositive jdisplacement jpump jcan jbe jused.
Tremie jPipe jInside jCasing j- jANS✓✓-Grout jPipe jinstalled jtemporarily jinside
jcasing,