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OPEN HOLE WIRELINE LOG EVALUATION ROUTINES
0. DEFINITION OF TERMS
1. DEFINITION OF TERMS
1. SHALE VOLUME
1. CONSOLIDATED OLDER ROCKS USING GAMMA RAY
2. OLDER ROCKS USING GAMMA RAY
3. TERTIARY ROCKS USING GAMMA RAY
4. WATER BEARING ZONE FROM SPONTANEOUS POTENTIAL
5. WATER BEARING ZONE FROM SP LOG
6. FROM NEUTRON LOG
7. FROM DEEP RESISTIVITY LOG QUICK LOOK
8. FROM DEEP RESISTIVITY LOG
9. DENSITY/NEUTRON CROSSPLOT
10. DENSITY/SONIC CROSSPLOT
11. NEUTRON/SONIC CROSSPLOT
12. CLAVIER - CRETACEOUS ROCKS USING GAMMA RAY
2. STANDARD POROSITY
1. SONIC
1. SONIC WYLLIE
2. SONIC CONSOLIDATED FORMATION AND CARBONATES
3. SONIC UNCONSOLIDATED SAND SLIGHTLY SHALY
4. SONIC CALCULATE DELTAt FROM SONIC POROSITY
2. COMPENSATED FORMATION DENSITY LOG
1. CLEAN ZONE
2. CONSOLIDATED FORMATIONS - SHALY
3. CALCULATE BULK DENSITY FROM DENSITY POROSITY
3. GAMMA NEUTRON TOOL
1. GAMMA NEUTRON TOOL
4. CNL DPOR CROSSPLOT POLAR COORDINATES
1. CNL DPOR CROSSPLOT POLAR COORDINATES
5. CNL FDC CROSSPLOT POLAR COORDINATES
1. CNL FDC CROSSPLOT POLAR COORDINATES
6. HYDROCARBON EFFECT POROSITY AND HYDROCARBON DENSITY
1. COMPENSATED NEUTRON LOG AND FORMATION DENSITY
2. SIDEWALL NEUTRON LOG AND FORMATION DENSITY
7. QUICK LOOK POROSITY
1. CNL/FDC POROSITY
2. CNL/FDC POROSITY - GAS ZONE
3. SECONDARY POROSITY INDEX
3. POROSITY CONVERSIONS
1. SCHLUMBERGER CNL CONVERSIONS
1. LIMESTONE TO SANDSTONE CONVERSION
2. LIMESTONE TO DOLOMITE CONVERSION
3. SANDSTONE TO LIMESTONE CONVERSION
4. DOLOMITE TO LIMESTONE CONVERSION
2. SCHLUMBERGER SNP_GNT CONVERSIONS
1. LIMESTONE TO SANDSTONE CONVERSION
2. LIMESTONE TO DOLOMITE CONVERSION
3. SANDSTONE TO LIMESTONE CONVERSION
4. DOLOMITE TO LIMESTONE CONVERSION
3. DRESSER-ATLAS CNL CONVERSIONS
1. LIMESTONE TO SANDSTONE CONVERSION
2. LIMESTONE TO DOLOMITE CONVERSION
3. SANDSTONE TO LIMESTONE CONVERSION
4. DRESSER-ATLAS SNP_GNT CONVERSIONS
1. LIMESTONE TO SANDSTONE CONVERSION
2. LIMESTONE TO DOLOMITE CONVERSION
4. CROSSPLOT POROSITY
1. COMPENSATED NEUTRON LOG/DENSITY CROSSPLOT
1. LIMESTONE TO DOLOMITE ( ITERATIVE ROUTINE )
2. SANDSTONE TO LIMESTONE ( ITERATIVE ROUTINE )
2. SIDEWALL NEUTRON POROSITY/DENSITY CROSSPLOT
1. LIMESTONE TO DOLOMITE ( ITERATIVE ROUTINE )
2. SANDSTONE TO LIMESTONE ( ITERATIVE ROUTINE )
3. COMPENSATED NEUTRON LOG/SONIC CROSSPLOT
1. LIMESTONE TO DOLOMITE ( ITERATIVE ROUTINE )
2. SANDSTONE TO LIMESTONE ( ITERATIVE ROUTINE )
4. SIDEWALL NEUTRON POROSITY/SONIC CROSSPLOT
1. LIMESTONE TO DOLOMITE ( ITERATIVE ROUTINE )
2. SANDSTONE TO LIMESTONE ( ITERATIVE ROUTINE )
5. DENSITY/SONIC CROSSPLOT
1. LIMESTONE TO DOLOMITE
2. SANDSTONE TO LIMESTONE
3. SANDSTONE TO DOLOMITE
5. TOTAL-MATRIX SOLUTION
1. 2-LOG LITHOLOGY -- N/A
2. 3-LOG LITHOLOGY -- N/A
3. 4-LOG LITHOLOGY -- N/A
6. PERMEABILITY
1. TIXIER (1955)
1. TIXIER EQUATION
2. TIXIER EQUATION USING CAPILLARY PRESSSURE
2. TIMUR (1968)
1. TIMUR EQUATION
2. TIMUR EQUATION USING CAPILLARY PRESSURE
3. COATES AND DUMANOIR (1972)
1. COATES AND DUMANOIR EQUATION IN A CLEAN ZONE
2. COATES AND DUMANOIR EQUATION IN A SHALY SAND ZONE
3. COATES AND DUMANOIR EQUATION USING CAPILLARY PRESSURE
4. CORE POROSITY/LOG PERMEABILITY
1. CORE POROSITY / LOG PERMEABILITY
7. RESISTIVITY
1. APPARENT WATER RESISTIVITY
1. ARCHIE'S EQUATION
2. SHELL HARD ROCK EQUATION
3. SIMANDOUX EQUATION
4. FERTL'S EQUATION 1
5. FERTL'S EQUATION 2
2. FORMATION FACTOR
1. FORMATION FACTOR FROM POROSITY (FS)
2. FORMATION FACTOR FROM DEEP RESISTIVITY (FR)
3. FORMATION FACTOR FROM SHALLOW RESISTIVITY (FXO)
4. RATIO OF FR OVER FS (FRFS)
3. RESISTIVITY INDEX
1. RESISTIVITY INDEX ( RO = F * RW )
2. RESISTIVITY INDEX ( RO = CONSTANT )
4. RWSP
1. CREATE A TEMPERATURE GRADIENT CURVE
2. CALCULATE RW - TEMPERATURES IN DEGREES C
3. CALCULATE RW - TEMPERATURES IN DEGREES F
5. FORMATION RESISTIVITY
1. CALCULATE FORMATION RESISTIVITY - TEMPERATURES IN DEGREES C
2. CALCULATE FORMATION RESISTIVITY - TEMPERATURES IN DEGREES F
8. WATER SATURATION
1. ARCHIE'S EQUATION
2. SIMANDOUX EQUATION
3. WAXMAN-SMITS EQUATION
4. FERTL'S EQUATION #1
5. FERTL'S EQUATION #2
6. SHELL'S HARD ROCK EQUATION
7. TOTAL SHALE EQUATION
8. MODIFIED TOTAL SHALE EQUATION
9. DISPERSED CLAY EQUATION
10. INDONESIA EQUATION
11. LAMINAR EQUATION
12. PARABOLIC EQUATION
13. HOSSIN'S EQUATION
14. DOLL'S EQUATION
15. IRREDUCIBLE WATER SATURATION EQUATION
16. TDT/NEUTRON LIFETIME EQUATION - CLEAN ZONE CALCULATION
17. TDT/NEUTRON LIFETIME EQUATION - SHALY SAND ZONE CALCULATION
18. TDT/NEUTRON LIFETIME EQUATION - VERY SHALY ZONE CALCULATION
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ENVIRONMENT CORRECTION ROUTINES
1. INVASION CORRECTION
1. DUAL INDUCTION - LL8 (RXO/RM = 20 OR 100)
2. DUAL LATERLOG - with RXO Curve
2. BOREHOLE CORRECTION
1. GAMMA RAY BOREHOLE CORRECTION
2. ILD BOREHOLE CORRECTION
3. ILM BOREHOLE CORRECTION
4. LL8 BOREHOLE CORRECTION
3. LOG INVERSION
1. CONDUCTIVITY --> RESISTIVITY
2. RESISTIVITY --> CONDUCTIVITY
3. GRAMS/CC --> KG/M3
4. KG/M3 --> GRAMS/CC
5. MICROSECONDS/FT --> MICROSECONDS/M
6. MICROSECONDS/M --> MICROSECONDS/FT
7. INCHES --> MILLIMETERS
8. MILLIMETERS --> INCHES
9. DEGREES F --> DEGREES C
10. DEGREES C --> DEGREES F
4. TRUE VERTICAL DEPTH (TVD)
1. TVD - N/A
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UTILITY ROUTINES
1. 1-CURVE COMPOSITE
1. SUBSTITUTE A CONSTANT IN AN INTERVAL
2. INTERPOLATE IN AN INTERVAL
3. IF CURVE 1< CONSTANT TAKE CONSTANT
4. IF CURVE 1<=CONSTANT TAKE CONSTANT
5. IF CURVE 1> CONSTANT TAKE CONSTANT
6. IF CURVE 1<=CONSTANT TAKE CONSTANT
7. IF CURVE 1==CONSTANT TAKE CONSTANT
8. IF CURVE 1<>CONSTANT TAKE CONSTANT
9. SHIFT CURVE
2. 2-CURVE COMPOSITE
1. MINIMUM OF 2 CURVES
2. MAXIMUM OF 2 CURVES
3. IF CURVE 1< CONSTANT TAKE CURVE 2
4. IF CURVE 1<=CONSTANT TAKE CURVE 2
5. IF CURVE 1> CONSTANT TAKE CURVE 2
6. IF CURVE 1<=CONSTANT TAKE CURVE 2
7. IF CURVE 1==CONSTANT TAKE CURVE 2
8. IF CURVE 1<>CONSTANT TAKE CURVE 2
3. 3-CURVE COMPOSITE
1. MINIMUM OF 2 CURVES
2. MAXIMUM OF 2 CURVES
3. IF CURVE 1< CONSTANT TAKE CURVE 2
4. IF CURVE 1<=CONSTANT TAKE CURVE 2
5. IF CURVE 1> CONSTANT TAKE CURVE 2
6. IF CURVE 1<=CONSTANT TAKE CURVE 2
7. IF CURVE 1==CONSTANT TAKE CURVE 2
8. IF CURVE 1<>CONSTANT TAKE CURVE 2
4. MATHEMATICS
1. ABS - ABS(-2)=2
2. ACOS - ACOS(-0.5)=2.094 (2pi/3 rad) ACOS(-0.5)*180/PI()=120(deg)
3. ASIN - ASIN(-0.5)=-0.5236(-p/6 rad) ASIN(-0.5)*180/PI()=-30(deg)
4. ATAN - ATAN(1)=0.785398 ATAN(1)*180/PI()=45(degrees)
5. CEIL - CEIL(1.2)=1
6. CONST - CONST(2)=2
7. COS - COS(60*PI()/180)=0.5 COS(60)=-0.952413
8. COSH - COSH(EXP(1))=7.610125
9. COT - COT(45*PI()/180)=1
10. CSC - CSC(30*PI()/180)=1/0.5 = 2
11. DEG - DEG(PI())=180
12. EXP - EXP(1)=2.718282 EXP(2)=7.389056 EXP(LN(3))= 3
13. EXPONENT - EXPONENT(8)=4
14. FLOOR - FLOOR(1.2)=1
15. HYPOT - HYPOT(34)=5
16. INT - INT(1.23)=1
17. INV - INV(.5)=2
18. LOG - LOG(10^1)=1
19. LN - LN(EXP(1))=1
20. MANTISSA - MANTISSA(8)=.5
21. MOD - MOD(103)=10-3*INT(10/3)=1
22. NEG - NEG(10)=-10
23. POW - POW(103)=1000
24. POW10 - POW10(3)=1000
25. RAD - RAD(180) = PI()
26. RANDOM - RANDOM(30) = a number between 0 and 29
27. SEC - SEC(60*PI()/180) = 1/0.5 = 2
28. SGN - SGN(-1) = -1
29. SIN - SIN(PI())=0 SIN(PI()/2)=1 SIN(30*PI()/180)=.5
30. SINH - SINH(1) = 1.175201194 SINH(-1) = -1.175201194
31. SQR - SQR(4) = 2
32. TAN - TAN(0.785) = 0.99920 TAN(45*PI()/180) = 1
33. TANH - TANH(-2)=-0.96428 TANH(0)=0 TANH(0.5)=0.462117
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