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Formation

Evaluation &Wellsite DutiesEdi B. Setyobudi2016

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Further Readings

Baer !ughes" 1##6" $Wellsite%eology Re'eren(e %uide)

Baer !ughes" 1##6" $Sur'a(e*ogging Systems +raining

%uide)Seubert" B.W." 1##," $+heWellsite %uide -n ntrodu(tionto %eologi(al Wellsite/erations) + etroEusantara /nline ubli(ation

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Formation Evaluation+e(hni3ues used to determine the ability o' 4ellbore to e(onomi(ally rodu(ehydro(arbons5

Wellbore (utting eamination

7ud logging hydro(arbon gases re(ordi8oring

Wireline logging

Well testing

+yas 7irasih

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Wellsite %eologist Duties

8olle(t" Evaluate and Re(ord allgeologi(al data and reort to the/eration %eology Suervisor5

Des(ribe and re(ord lithology and !sho4s en(ountered in the 4ell

Witness & :8 mud logging and4ireline oerations

8ore oint sele(tion and des(rition;in(lude SW8isual orosity &ermeability

!ydro(arbon Sho4ndi(ation

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-dditional Des(ritions%rain (olor 9 mainly to des(ribe grains in loose s

8utting Shae 9 tyi(ally teture 'or so't sedimelie (oal" shale and siltstone" but some 'eaturesre(ogniCed as ressure and bit tye ee(t

Fissility9 main internal stru(ture to identied sha

*uster9 mainly used 'or mineral or sho4ing dego' (oal maturity

8rystallinity9 se(ially used 'or limestone

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!8 Sho4s

/il Sho4s/il sho4 des(rition under ultra9violet light mi(ros(oe

%as Sho4s+otal %as readings using hot94ireunit ;gas dete(toregg

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i(ing 8ore oint

7ud ;*ithologi(< *og

8orrelate 4ith

eisting 4ell loidenti'y amarer above(ore oint

Sto at drillingbrea (ir(uout samles

' (onrmed /! to (hange

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8ore Bit and 8oreBarrels

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*ay Do4n +he 8ore in +he 8oBoes

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Des(ribe +he 8ore

/il bleeding 'rom the (ores

*ithology Sedimentary

stru(tures

!8 sho4s

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Wireline *ogging re Iobn'orm *ogging Engineer 4ith5

*ogging rogram as stated in the Drillingrogram and number o' rush (oies

-ll *og !eader Data ;Well ame" *o(ation"Elevation et(