pengunaan metode geostatistik

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 PENGUNAAN METODE GEOSTATISTIK DALAM PENDIFINISIAN DATA GOLOGI PETROFISIKA RESERVOIR MINYAK DAN GAS BUMI USULAN TESIS OLEH : ADANG SUHERMAN 22191025 PROGRAM PASCA SERJANA BIDANG REKAYASA PERTAMBANGAN INSTITUT TEKNOLOGI BANDUNG 1992

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Page 1: PENGUNAAN METODE GEOSTATISTIK

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PENGUNAAN METODE GEOSTATISTIK 

DALAM PENDIFINISIAN DATA GOLOGI PETROFISIKA

RESERVOIR MINYAK DAN GAS BUMI

USULAN TESIS

OLEH :

ADANG SUHERMAN

22191025

PROGRAM PASCA SERJANA

BIDANG REKAYASA PERTAMBANGAN

INSTITUT TEKNOLOGI BANDUNG

1992

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DFATAR ISI

HAL

I.PENDAHULUAN

I.1. LATAR BELAKANGI.1.1. Al!" M#$%&# G#%!$$'!$'( 

I.1.2. G#%!$$'!$'( &l) P#"*!'+" D$ G#%l%,'

I.1.-. K#/$/" (" K+($#+'!$'( P#$+%*'!'( 

I.2. TUJUAN DAN LINGKUP PENELITIAN

I.2.1. T//" P#"#l'$'"

I.2.2. L'",(/ P#"#l'$'"

II. DASAR TEORI

1. PERUBAH TEREGIONAL

2. STASIONARITAS DAN HIPOTESA INTRINSIK 

-. PERHITUNGAN VARIOGRAM

3. SIFAT VARIOGRAM14 P& T'$'( Al

24 P& T'$'( T( H'",,

5. MEMBUAT MODEL TEORITIS

6. TEORI KRIGGING

7. PENURUNAN PERSAMAAN KRIGGING

8. SIFATSIFAT KRIGGING

9. SIMULASI KONDISIONAL

14 P+'"!'

24 P+%!#&/+ 

III. METODOLOGI

1. SUMBER DATA

2. PEMERAIAN DATA

-. PENYELENGGARAAN GEOSTATISTIK 

IV. JADAL PENELITIAN

V. KEPUSTAKAAN

LAMPIRAN

A. KELULUSAN ;PERMEABILITAS4

B. KETERUSAN ;TRANSMISIVITY4

C. KESARANGAN ;POROSITY4

D. HUBUNGAN KESARANGAN DENGAN KELULUSANE. SKEMA :

METODE GEOSTATISTIK DAN INTER STUDI GEOLOGI DALAM

PENDEFINISIAN DATA GEOLOGI.

DIAGRAM ALIR IDEAL TAHAPAN RISET MODELING KOMPUTER 

GEOLOGI.

  PREDICTION OF FLUID FLOW AND FLUID ENTRAPMENT .

- INTREGRATION OF GEOPHYSICAL, GEOLOGI AND ENGGINERING

 DATA FOR RESERVOIR DESKRIPTION.

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I. PENDAHULUAN

I.1.LATAR BELAKANG

I.1.1. Alasan Metode Geostatistik 

Dl) #)#+'" +/", &' l)< ('$ $'&( )/",('" )#",&("

 #",/(/+" &' !#l/+/ +/", $#+!#/$< (" $#$' !#ll/ $#+('$ & =%"$%

 #",)$" >", /)l"> !",$ $#+$!. S#l"/$"> "'l' !#l'"

 #",)$"< '!"> &'#+('+(" #+&!+(" #",)$" >", &. Dl)

 #+('+" $#+!#/$< '! $#+&' (#!l" >", $#+,"$/", & %!'!' &"

&'!$+'/!' $'$'( #",)$".

M#$%&# #)#+'" >", =%=%( /"$/( )#"#+",(" (#&'" &' l)<

>", )#)#+'$/",(" *=$%+ (#!l" $#+!#/$ &' $! &l )#$%&#

,#%!$$'!$'(. M#$%& '"' )#",,/"(" #/ $#++#,'%"l >", &' #+(#"l("

%l# G. M$#+%". P#/ $#++#,'%"l &l >", $#+!#+ &l) +/", >",

)#"/"/(" !/$/ !$+/($/+ $#+!#/$ $/ #/ >", )#)/">' ('$"

!#=+ !!'l< /(" #/ =(.

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I.1.2. Geostatistik dalam Pendifinisian Data Geoloi

Dl) !$/&' ,#%l%,'< #",)$" "$+ l'" #+/ *%$% /&+<

!/+?#> ,#%l%,' &" ,#%*'!'(< &$ !/)/+ %+ ;)#l'/$' !#+/( %+< l%, !/)/+<

'"$' %+< &" &$ #",/'" !/)/+4. A"l'! (%)%!'$ $#+& &$

 #",)$" $#+!#/$< )#+/(" +%!#! #"&'*'"'!'" &$ ,#%l%,' /"$/( '!

)#"&'!(+'!' ,#%l%,' l%(l $/ +#,'%"l< "$+ l'" !/$/ =#(" &"

reservoir  )'">( &" ,! /)'.

P+%!#! #"&'*'"'!'" &$ ,#%l%,'< )#"=(/ ##+ )#$%& "l'!

 #!#+$ l$ "$/ #"== &$">< )#l'/$' '"$#++#!$!' ,#%*'!'(< "l'!

,#%(')'< "l'! )'(+%l#%"< "l'! *'!'( '"$' %+< "l'! l%, !/)/+< &"

"l'! ,#%!$$'!$'(. S#)/ !l'", )#",'!' /"$/( )#"&'!(+'!'(" &$

,#%l%,' >#", )#l'/$' l'$%l%,'< #$+%*'!'(< !'*$ $/" '"&/(< /)/+ 

 l#%$')#+>< /+/$" !$+$',+*' &" !$/(+/$ ,#%l%,'.

I.1.!. Ke"#t#$an akan Ka%akte%isasi Pet%ofisika

P#+"#+'" !'*$ $/" &'#+l/(" &l) #)%&#l" ,#%l%,'< "$+ l'"

/"$/( +"#"#"$/(" (#!+","< )!/(" !/#)%&#l" @!"#   s$ri%%i&'(  $/

 'eo)i$or* /"$/( )#"#"$/(" (#l/l/!" )!/(" !/#)%&#l" l'+"

*l/'& #+)/(".

Dl) !$/&' l'" &" #"=#(" *l/'& #)#+'" !'*$ $/"

&'#+l/(" /"$/( +#!#"$!' &$ reservoir   !$$'! &" &$ reservoir   &'")'!

&l) $', &')#"'</"$/( )#)",/" )%&#l (/"$'$$'* #%l%' !$$'( &"

)%&#l e&'i&eeri&'   &'")'!< '",, &'#+%l# )%&#l ,#%l%,'e&'i&eeri&' .

K%+#l!' )%&#l $#+!#/$ &#"," !$$'!$'( $" +%&/(!'< ('+"> &'&$

)%&#l ,#%l%,' '&+%&'")'( "$+ !$/ reservoir   &#"," reservoir   l'"">

&l) &l) !$/ &#%!'!$#).Dl) #",#l%l" reservoir   !')/l!' l'+" *l/'& )#+/(" =+

>", ##($'* /"$/( #+)l" +'l(/ reservoir . U"$/( !/(!#!"? !')/l!'

$#+!#/$ &'#+l/(" (#$#l'$'" #)#+'" reservoir . P#+"#+'" !/$/ reservoir 

)#l'/$' :

. K%"*',/+!' !$+/($/+ 

 . S'*$ $/"

=. S'*$ *l/'&

&. J#"'! #"&%+%", reservoir .

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M!l >", /)/) &l) #)#+'" reservoir   &l (+($#+'+!'

("*',/+!' !$+/($/+ &" !'*$ $/". S'*$ $/" >", +"#"#"$/(" +'l(/

; %er+or!&"e4 reservoir   &l (#!+"," ;%+%!'$!4 &" (#l/l/!"

;#+)#'l'$!4 $/".

I.2.TU&UAN DAN LINGKUP PENELITIAN

I.2.1. T#'#an Penelitian

T//" #"#l'$'" >", &'/!/l(" &' !'"' &l #",,/"" )#$%&

,#%!$$'!$'( &l) #"&#*'"'!'" &$ ,#%l%,' (/!/!"> ,#%l%,' #$+%*'!'(

reservoir  )'">( &" ,!< >'$/ (#!+"," &" (#l/l/!" $/". P#"#l'$'"

'"' /, )#+/(" #">#l#!'" $#!'! /"$/( P+%,+) S2 P#+$+""" ITB<

 '&", (/!/! #(!l%+!'.

I.2.2. Link#( Penelitian

. O>#( S$/&'.

P#",,/"" &$ l%, !/)/+ /"$/( #"(!'+" (#!+"," &" (#l/l/!"+#!#+?%'+ :

14 P#)('" l%, /"$/( )#"(!'+ "'l' (#!+"," &" (#l/l/!" &l)

!/)/+.

24 P#+('+" (#!+"," &" (#l/l/!" >", $'&( &'(#$/' & l%(!'

$#+$#"$/.

-4 M#",&(" (%+#l!' (#!+"," &" (#l/l/!" !!'l !#=+

(%"$'"/#.

 . C+ P#">#l#!'".

U"$/( #">#l#!'" l &' $! &'$#)/ &#"," :

14 M#",,/"(" +%,+) ,#%!$$'!$'( >", !/& &.

24 M#",#)",(" +%,+) ,#%!$$'!$'( /"$/( !')/l!' (%"&'!'%"l<

)#"&' !#/ )%&#l s$)o")!$i".

=. D$.

U"$/( $#!$ &" "l'! )%&#l< &$ &'#+,/"(" &$ &" !#/ !(+'!'

S1 #+$)","< >'$/ &l &$ L"," M&/+ U$+< >", &/l/

)#+/(" 'l> (#+' K%&#=% C%. L$&.

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II. DA)AR TE*RI

1. PEUBAH TEREGI*NAL

B#"$/( $#+#,'%"l &'#+(#"l(" %# G.M$#+%" /"$/( )#"#+",("

(#&'" >", $#+!#+ &l) +/", $/ ($/ &+' )#"/"/(" !/$/

!$+/($/+ $#+$#"$/. P#/ >", )#"='+'(" (#&'" $#+!#/$ &'!#/$ #/

$#++#,'%"l ;R#.V4. P& (#"$""> #/ &l) )#"#+",(" (#&"

&l) $" &" $)%!*'+ $/ !'(l/! '+< &'(#$/' !#,' #/

$#++#,%"l.

S#=+ )$#)$'! !/$/ R#.V +"#+/(" */",! ;4< &l "'l' &'

!/$/ $'$'( ;&l) 1< 2 $/ - &')#"!4 &+' >", )#+/(" (#&'" >",

&'#l+'.

T#%+' #/ $#+#,'%"l &$ )#l'/$' #/ >", l/! !+"'

(!+ /"$/( )#)"$/ :

14 M#"$/(" &!+ $#%+' /"$/( )#"/"/((" !'*$ !$+/($/+ & (#'&'" l)

&l) #"$/( +"$#)$'(.

24 M#l#",(' l$ +($'! /"$/( +"#)#=(" )!l #"(!'+".

U"$/( )/&"> &l) )#",,/"(" #/ $#+#,'%"l & (#&/

(%"!# &' $! #+"( &" $#%+' (#)/",('"" & */"!' =( ;RF4.

S#/ R#.V >", &'"%$!'(" ;4 &'+$'(" !#,' +#l'!!' */",!' =( 

>", &'"%$!'(" !#,' ;4 &#"," )#">/!/" (#)l' /(/) &'!$+'/!'

RF &" &$.

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K#!/l'$" $')/l &" (#">$" ">( #/ $#++#,'%"l

;!##+$' #+)/(" l'!" &" (#$#+/!" & !$/ ('*#+4 >", /"'( &"

$'&( )/",('" /"$/( &'!')/l(" &#"," "> !$/ +#l'!!' RF<

!#,')" )#",'$/", #(!#($!'. V"'"!' $/ */",!' &#"!'$!

(#)/",('""< & RV >", &'&!+(" !'l "/)#+'( &#"," #+'$/","

$/",,l. J&' !$$'!$'( RF )#)#+l/(" '%$#! >", =/(/ l/#! /"$/( 

!#)/ )!l +($'!.

2. )TA)I*NARITA) DAN HIP*TE)A INTRIN)IK 

S/$/ RF &'($(" !$'%"#+ '( #(!#($!' ;4 (%"$" &' !#)+",

$'$'( :

E + ,-/ 0 m-/ m

J/, (%?+'" "$+ &/ $'$'( &" $'&( $#+,"$/", & $#+'!">

&" < $' "> & ?#=$%+ ; 4 :

E + ,-/ m 0 + ,-3/ m 0 K - 3 /

 & (#&" $#+$#"$/< ?+'"!' $'&( $#+,"$/", :

E + -,-/ m /2 0 4a% + ,-/ 0 K -5/

P& #"/+/"" #+!)" (+',,'", )#)#+l/(" !$!'%"+'$! $'&( 

"> /"$/( ;4 !#"&'+'< $' & (#"'(("">. K'$ "> )#)#+l/("

'%$#! < /"$/( !#)+", ?#($%+ (#"'((" ;4 ;4 &l

#(!#(!$!' "%l &" !#/ ?+'"!' >", $'&( $#+,"$/", & $'$'( . I"'

 '! &'$/"/((" !#,' #+(/$

E + ,-6$/ ,-/ 0 5

4a% + ,-6$/ ,-/ 0 2 7 -$/

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'%$#! $#+!#/$ &'!#/$ '"$+'"!'( '%$#'!. F/",!' =( >", !#!/' &#","

'%$#! $#+!#/$ &'!#/$ */",!' =( '"$+'"!'( ;IRF4. ;4 &'!#/$ !#)'

?+'%,+).

F/",!' =( '"$+'"!'( ;IRF4 &'&#*'"'!'(" !#,' :

7-$/ 1

2  4a% + ,-6$/ ,-/ 0

$/

7-"/ 1

2  E + -,-6$/ ,-//2 0

>", #++$' 2 ;4 &l +$+$ #+#&" (/&+$ "$+ &/ $'$'( 

>", $#+'!.

!. PERHITUNGAN 8ARI*GRAM

D+' '%$#! &' $! ;4 &#"," )/& &$ &''$/", &#","

(/&+$ #+#&" >", &''$/", & +#l'!!' $/",,l. J'( (#&'" >",

&')$' &l) !$/ &')#"!'< )( )#"&#($' !(l+. J'( $'$'( #",)$"

$#+l#$( #+$/+" )( ?+'%,+) &$ &''$/", & "'l' &'(l' '/)l

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7-$/ 1

2 N (h)   ∑i=1

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  xi //2 0

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 xi 9 &$ >", &',/"(" &

 x i  &" x i &" N;4 /)l !"," $'$'( >", $#+'! !#+( .

Sl !$/ !$/&' >", )" )#+/(" ?#($%+< &l ?+'%,+)

>", )#+/(" */",!' &" &/ (%)"#" $/ &l) (%%+&'"$ %l+< >'$/

!#/ */",!/ &+' )%&/l/! |h|  &l '+( "$+ $'$'( &" !/&/$ %l+ .Ɵ

J'( $'$'( #",)$" $'&( #+$/+" &l) '&", &$+ )(

&'(#l%)%((" )#"&' ##+ (#l! &+' +( &" !/&/$ .Ɵ

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P#+"&'"," &+' ?+'%,++" &#"," + >", #+#& ("

)#"/"/((" !&iso$ro%i  &+' (#&'". Dl) l '!%$+%'(< ;4 ">

)#+/(" */",!' &+'

|h|.

:. )I;AT 8ARI*GRAM

1/ Pada Titik A<al

P& (+',,'",.< !'*$ ?+'%,+) & $'$'( l !",$ #+'$'",

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(/&+$ (%"?#+,#"4 !##+$' $'",,' (%l%) '+ ;)e! 4 &

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/"$/( !#$' !#($%+ >", $'&( "%l< !##+$' & l"> $! $%$l

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!$+/($/+ 'l", >", &'$#)/(" & #+,"$'" /" $/"" &

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G)+ 1.

4 M%&#l    4 )%&#l !#+'=l

=4 )%&#l #(!%"#!'l &4 )%&#l ,/!!'"

2/ Pada Titik Tak Hina

S#l'" !'*$ & $'$'( l< !'*$ #"$'", & ?+'%,+) &l

 +'l(/ & +( >", #!+. S#l) (#"'(" &l) !$!'%"#+<

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!'ll >", !)' &'"," ?+'" &$ l",". J+( &')" !'ll &'='&'!#/$ &#+ #",+/ ;r!&' 4. D#+ #",+/ )#"/"/(("

l/!"> &+ #",+/ &" $'$'( #",)$"< & +( &' $! &#+

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 & !(l #+#&4< @)o0e  e++e"$(  ;$')/l"> (%+#l!' "#,$'* (+#"

&"> %" (> &'!#('$+ %"# )'!('"4. K#">(" *l/($/!' ,+*'( 

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)'+ )#+/(" *l/($/!' !)l'",. N'l' !/$/ #(!#+')#"$l

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 #"/+/"" #+!)" ("',,'",. M%&#l $#%+'$'! /"$/( ;4 )#">$("

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 +'"" '%$#! '"$+'"!'(4< #+'$/"," & :

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4a%   ∑i=1

 N 

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 λi λ j γ  -  xi  

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