Penentuan Parameter Petrofisik berdasarkan Data Log

TUJUAN

• Menentukan Zona Interpretasi Petrofisis berdasarkan formasi dan data log per sumur.

• Menentukan nilai Parameter Petrofisis untuk WATER, CALCITE, QUARTZ, SHALE per zona interpretasi

Metode

• Neutron Density Cross Plot

• Neutron Gamma Ray Cross Plot

• GR/Vcl Resistivity Cross Plot

• Density Sonic Cross Plot (If Sonic Use)

N-D Xplot

N-GR Xplot

GR-RT Xplot

SON-D Xplot

)1( wc

wcdc

GRGR

)1( dc

dcwcwc rhob

rhobrhob

)1( wc

wcwcdc

NphiNphi

Rhob DC core BRG-10 XRD

Diambil dari pembacaan crossplot Diambil dari cross plot ILD-Vclay dan ils/ilm/msfl-Vclay

ZONE PICKING

• Berdasarkan formasi

GUF

BSMNT

TAF

BRF

Phase 12.25”

Phase 8.5”

• Menentukan Porositas

• Menentukan Parameter Clay (WC)

Neutron Density Xplot

TAF

• WC: 0.309;2.62

• DC: 0.271;2.71

BRF

• WC: 0.164 ; 2.6

• DC: 0.107 ; 2.71

BSMNT

Water (1,1)

Wet Clay (0.35, 2.61)Quartz (0, 2.65 gr/c3) Dry Clay (0.326, 2.71 g/c3)

ALL INTERVAL

GUFGUF

• WC: 0.446 ; 2.468

• DC: 0.355 ; 2.71

Neutron Gamma Ray Xplot• Menentukan Parameter Clay (WC)

• Menentukan parameter Quartz/Calcite

GUF

• WC: 0.446;112

• DC: 0.355;130

• QTZ : 0 ; 54

BRF

• WC: 0.164 ; 146

• DC: 0.107 ; 156

• CALC : 0 ; 25TAF

• WC: 0.309 ; 194

• DC: 0. 271 ; 205

• QTZ : 0 ; 40

Quartz

Dry Clay

Water

Wet Clay

QuartzQuartzQuartz

Wet ClayWet Clay

Quartz (0,30)

Dry Clay (0.326;155)

Water (1,0)

Wet Clay (0.35;150)

ZONE PICKING

• Berdasarkan formasi dan log response

GUF

BSMNT

TAF

BRF

GUF1

GUF2

TAF1

TAF2

GUF1

• WC: 0.43 ; 112

• DC: 0.341 ; 129

• QTZ : 0 ; 54

GUF2

• WC: 0.43 ; 2.48

• DC: 0.341 ; 2.71

GUF2

• WC: 0.47 ; 106

• DC: 0.343 ; 131

• QTZ : 0 ; 54

GUF1

• WC: 0.47 ; 2.379

• DC: 0.343 ; 2.71

GUF1

Neutron Density Xplot GUF

Neutron Gamma Ray Xplot GUF

• Menentukan Resistivity Clay menjadikan nilai Sw/Sxo di Shale interval, rata-rata 100%

• Membantu menentukan zonasi interpretasi

Vclay Resistivity Xplot

ALL INTERVAL

RT - Vclay

ALL INTERVAL

Rxo - Vclay

BRF

Rt Shale: 5.95

TAF1 & TAF 2

TAF2 Rt Shale: 12.7

TAF1 Rt Shale: 4.8

Vclay RT Xplot (Zone by zone)

GUF1 & 2

Rt Shale: 1.3

MINERAL SOLVER

Default Density value of QUARTZDari data air formasi

Dari Log Header

Scale 1:1500

Ouput Layout BRG-33 GUF

Scale 1:350

Ouput Layout BRG-33 BRF

Scale 1:500

TAFOuput Layout BRG-33

RESSUM BRG-33

Ouput Layout RESSUM BRG-33

Tentative Time Frame

Actual :

• Struktur Beringin selesai 20 sumur (1 hari = 1 sumur)

• Struktur Pandan collecting data

Terima Kasih

Back Up Slides

1 1 22

Rt a Rw

Vcl

RclSw

m Vcln

Indonesia Equation

Matrix

(Quartz)Wet Clay Free Water HC

Rw

Vsh Swe

Rtsh

wcwcbw vv

bwet v

hcvfwvwcvqtzve

Rhob Illite = 2.78 g/c3

Rhob Kaolinite = 2.62 g/c3

RhobDC = (2.78*(6/10)) + (2.62 (4/10))

= 1.668 + 1.048

= 2.716 gr/c3

BRF MODEL

)1( wc

WcWaterwcdc

DTDTDT

• WC: 74 ; 2.6

• DC: 66 ; 2.71

• Calcite: 0 ; 47

BRG-16

Water (1,1)

Wet Clay (0.35, 2.61)Quartz (0, 2.65

gr/c3) Dry Clay (0.326, 2.71 g/c3)

ALL INTERVAL

ELAN VS “PICK” PARAMETER

Quartz

Dry Clay

Water

Wet Clay

QuartzQuartzQuartz

Wet ClayWet Clay

Quartz (0,30)

Dry Clay (0.326;155)

Water (1,0)

Wet Clay (0.35;150)

Komparasi dengan Parameter ELAN

ElanELAN VS “PICK” PARAMETER

ELAN VS “PICK” PARAMETER

ELAN VS “PICK” PARAMETER

• Penentuan Porositas Efektif :Øe = Phi input – Vcl × Øtclay

• Penentuan Porositas Total :Øt = Øe + Vcl GR × Øtclay

• Penentuan Porositas Total Clay :

Øtclay =

• Penentuan Saturasi Air dengan Metode Indonesian Equation :

=

• Penentuan Swirr :

Swirr =

• Penentuan k (Empirical Relation) :

k =

• Penentuan k (Tixier Relation)

k =

• Penentuan k (Timur Relation)

k =

• Penentuan k efektif :

keff =