SCHLUMBERGER Survey report 4-Nov-2004 10:11:22 Page 1 of 4 Client...................: SANTOS Ltd. Field....................: Callister Well.....................: Callister-1 Spud date................: 13-Oct-2004 API number...............: Last survey date.........: 04-Nov-04 Engineer.................: A. DeCastro/D. Hastie Total accepted surveys...: 76 MD of first survey.......: 0.00 m RIG:.....................: Jack Bates MD of last survey........: 3914.50 m STATE:...................: VIC ----- Survey calculation methods------------- ----- Geomagnetic data ---------------------- Method for positions.....: Minimum curvature Magnetic model...........: BGGM version 2004 Method for DLS...........: Mason & Taylor Magnetic date............: 15-Oct-2004 Magnetic field strength..: 1218.81 HCNT ----- Depth reference ----------------------- Magnetic dec (+E/W-).....: 10.27 degrees Permanent datum..........: LEAST ASTRONOMICAL TIDE Magnetic dip.............: -69.95 degrees Depth reference..........: Driller's Depth GL above permanent.......: -129.42 m ----- MWD survey Reference Criteria --------- KB above permanent.......: -15240.00 m Reference G..............: 1000.05 mGal DF above permanent.......: 29.00 m Reference H..............: 1218.81 HCNT Reference Dip............: -69.95 degrees ----- Vertical section origin---------------- Tolerance of G...........: (+/-) 2.50 mGal Latitude (+N/S-).........: 0.00 m Tolerance of H...........: (+/-) 6.00 HCNT Departure (+E/W-)........: 0.00 m Tolerance of Dip.........: (+/-) 0.45 degrees ----- Platform reference point--------------- ----- Corrections --------------------------- Latitude (+N/S-).........: -304.57 m Magnetic dec (+E/W-).....: 10.27 degrees Departure (+E/W-)........: -304.57 m Grid convergence (+E/W-).: -0.29 degrees Total az corr (+E/W-)....: 10.56 degrees Azimuth from Vsect Origin to target: 0.00 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type ...: I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction [(c)2004 IDEAL ID9_1C_01] SCHLUMBERGER Survey Report 4-Nov-2004 10:11:22 Page 2 of 4 === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (m) (deg) (deg) (m) (m) (m) (m) (m) (m) (deg) 100f) type (deg) === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIP None 2 299.00 0.50 0.00 299.00 299.00 1.30 1.30 0.00 1.30 0.00 0.05 MWD_M None 3 385.00 1.00 0.00 86.00 384.99 2.43 2.43 0.00 2.43 0.00 0.18 MWD_M None 4 414.00 1.00 0.00 29.00 413.98 2.94 2.94 0.00 2.94 0.00 0.00 MWD_M None 5 446.00 1.00 0.00 32.00 445.98 3.49 3.49 0.00 3.49 0.00 0.00 MWD_M None 6 471.00 1.50 0.00 25.00 470.97 4.04 4.04 0.00 4.04 0.00 0.61 MWD_M None 7 557.00 1.00 0.00 86.00 556.95 5.92 5.92 0.00 5.92 0.00 0.18 MWD_M None 8 615.00 0.50 0.00 58.00 614.95 6.68 6.68 0.00 6.68 0.00 0.26 MWD_M None 9 643.00 0.50 0.00 28.00 642.95 6.92 6.92 0.00 6.92 0.00 0.00 MWD_M None 10 672.00 1.00 0.00 29.00 671.94 7.30 7.30 0.00 7.30 0.00 0.53 MWD_M None 11 701.00 1.00 0.00 29.00 700.94 7.81 7.81 0.00 7.81 0.00 0.00 MWD_M None 12 728.00 0.50 0.00 27.00 727.94 8.16 8.16 0.00 8.16 0.00 0.56 MWD_M None 13 756.00 1.00 0.00 28.00 755.93 8.53 8.53 0.00 8.53 0.00 0.54 MWD_M None 14 787.50 1.00 0.00 31.50 787.43 9.08 9.08 0.00 9.08 0.00 0.00 MWD_M None 15 790.06 0.45 331.69 2.56 789.99 9.11 9.11 -0.00 9.11 359.97 7.63 MWD None 16 817.91 0.45 330.23 27.85 817.84 9.30 9.30 -0.11 9.30 359.32 0.01 MWD None 17 847.21 0.69 337.63 29.30 847.14 9.56 9.56 -0.24 9.56 358.59 0.26 MWD None 18 874.56 1.05 344.29 27.35 874.48 9.95 9.95 -0.37 9.96 357.90 0.42 MWD None 19 903.94 1.25 333.65 29.38 903.86 10.50 10.50 -0.58 10.52 356.83 0.30 MWD None 20 931.51 1.37 331.34 27.57 931.42 11.06 11.06 -0.87 11.09 355.49 0.14 MWD None 21 959.28 0.22 170.41 27.77 959.19 11.30 11.30 -1.02 11.34 354.83 1.73 MWD None 22 990.11 1.04 330.11 30.83 990.02 11.48 11.48 -1.15 11.54 354.27 1.23 MWD None 23 1016.77 1.00 334.61 26.66 1016.67 11.90 11.90 -1.37 11.98 353.42 0.10 MWD None 24 1037.31 1.03 330.72 20.54 1037.21 12.23 12.23 -1.54 12.32 352.82 0.11 MWD None 25 1073.31 0.97 332.91 36.00 1073.20 12.78 12.78 -1.84 12.91 351.82 0.06 MWD None 26 1101.55 1.29 326.69 28.24 1101.44 13.26 13.26 -2.12 13.43 350.91 0.37 MWD None 27 1130.35 1.38 328.84 28.80 1130.23 13.82 13.82 -2.48 14.05 349.84 0.11 MWD None 28 1159.59 1.19 326.05 29.24 1159.46 14.38 14.38 -2.83 14.65 348.87 0.21 MWD None 29 1188.36 1.09 328.96 28.77 1188.23 14.86 14.86 -3.14 15.19 348.08 0.12 MWD None 30 1216.58 1.00 326.02 28.22 1216.44 15.29 15.29 -3.41 15.67 347.42 0.11 MWD None [(c)2004 IDEAL ID9_1C_01] SCHLUMBERGER Survey Report 4-Nov-2004 10:11:22 Page 3 of 4 === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (m) (deg) (deg) (m) (m) (m) (m) (m) (m) (deg) 100f) type (deg) === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== 31 1245.42 1.04 326.14 28.84 1245.28 15.72 15.72 -3.70 16.15 346.76 0.04 MWD None 32 1274.17 1.16 320.05 28.75 1274.02 16.16 16.16 -4.03 16.66 345.99 0.18 MWD None 33 1303.61 0.91 307.43 29.44 1303.46 16.53 16.53 -4.41 17.11 345.07 0.35 MWD None 34 1332.69 0.59 319.05 29.08 1332.54 16.78 16.78 -4.69 17.43 344.39 0.37 MWD None 35 1361.48 0.51 310.54 28.79 1361.32 16.98 16.98 -4.89 17.67 343.95 0.12 MWD None 36 1390.36 0.53 314.61 28.88 1390.20 17.16 17.16 -5.08 17.89 343.51 0.04 MWD None 37 1417.46 0.62 318.06 27.10 1417.30 17.35 17.35 -5.27 18.13 343.12 0.11 MWD None 38 1447.76 0.51 316.13 30.30 1447.60 17.57 17.57 -5.47 18.40 342.72 0.11 MWD None 39 1476.30 0.56 320.25 28.54 1476.14 17.77 17.77 -5.65 18.65 342.38 0.07 MWD None 40 1503.90 0.49 302.77 27.60 1503.74 17.94 17.94 -5.83 18.86 341.99 0.19 MWD None 41 1532.52 0.49 296.48 28.62 1532.36 18.06 18.06 -6.04 19.04 341.50 0.06 MWD None 42 1560.05 0.41 312.01 27.53 1559.89 18.18 18.18 -6.22 19.21 341.11 0.16 MWD None 43 1588.76 0.41 306.97 28.71 1588.60 18.31 18.31 -6.38 19.39 340.79 0.04 MWD None 44 1674.20 0.58 302.18 85.44 1674.03 18.72 18.72 -6.99 19.99 339.53 0.06 MWD None 45 1759.79 0.77 300.09 85.59 1759.62 19.24 19.24 -7.85 20.78 337.79 0.07 MWD None 46 1847.14 0.95 294.58 87.35 1846.96 19.84 19.84 -9.02 21.79 335.55 0.07 MWD None 47 1930.43 0.89 302.24 83.29 1930.24 20.47 20.47 -10.20 22.87 333.52 0.05 MWD None 48 2017.36 0.91 307.00 86.93 2017.15 21.25 21.25 -11.32 24.07 331.95 0.03 MWD None 49 2103.93 0.96 309.22 86.57 2103.71 22.12 22.12 -12.43 25.37 330.67 0.02 MWD None 50 2187.51 0.94 306.90 83.58 2187.28 22.97 22.97 -13.52 26.66 329.52 0.02 MWD None 51 2273.18 1.01 323.23 85.67 2272.94 24.00 24.00 -14.53 28.06 328.80 0.10 MWD None 52 2358.91 0.97 322.75 85.73 2358.66 25.18 25.18 -15.43 29.53 328.51 0.01 MWD None 53 2445.35 0.96 329.95 86.44 2445.08 26.39 26.39 -16.23 30.98 328.41 0.04 MWD None 54 2524.68 1.01 330.09 79.33 2524.40 27.57 27.57 -16.91 32.35 328.48 0.02 MWD None 55 2559.17 0.98 331.10 34.49 2558.89 28.09 28.09 -17.21 32.94 328.51 0.03 MWD None 56 2616.28 1.09 335.82 57.11 2615.99 29.02 29.02 -17.67 33.97 328.67 0.07 MWD None 57 2701.32 1.08 328.22 85.04 2701.01 30.44 30.44 -18.42 35.58 328.82 0.05 MWD None 58 2786.73 0.87 334.96 85.41 2786.41 31.71 31.71 -19.12 37.03 328.91 0.09 MWD None 59 2873.56 0.47 315.46 86.83 2873.24 32.56 32.56 -19.65 38.03 328.89 0.16 MWD None 60 2960.21 0.37 282.26 86.65 2959.88 32.87 32.87 -20.17 38.57 328.47 0.09 MWD None [(c)2004 IDEAL ID9_1C_01] SCHLUMBERGER Survey Report 4-Nov-2004 10:11:22 Page 4 of 4 === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (m) (deg) (deg) (m) (m) (m) (m) (m) (m) (deg) 100f) type (deg) === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== 61 3045.67 0.47 240.13 85.46 3045.34 32.76 32.76 -20.74 38.77 327.66 0.11 MWD None 62 3129.38 0.54 224.15 83.71 3129.05 32.30 32.30 -21.31 38.70 326.58 0.06 MWD None 63 3215.10 0.92 224.41 85.72 3214.76 31.52 31.52 -22.08 38.48 324.99 0.14 MWD None 64 3303.12 1.31 213.64 88.02 3302.76 30.18 30.18 -23.13 38.02 322.53 0.15 MWD None 65 3330.63 1.43 212.93 27.51 3330.27 29.63 29.63 -23.49 37.81 321.59 0.13 MWD None 66 3358.35 1.62 214.79 27.72 3357.98 29.02 29.02 -23.90 37.59 320.52 0.22 MWD None 67 3386.78 1.69 213.08 28.43 3386.39 28.33 28.33 -24.36 37.37 319.31 0.09 MWD None 68 3414.60 1.67 214.65 27.82 3414.20 27.66 27.66 -24.81 37.16 318.10 0.05 MWD None 69 3473.12 2.20 213.29 58.52 3472.69 26.02 26.02 -25.92 36.72 315.11 0.28 MWD None 70 3528.68 2.23 216.78 55.56 3528.21 24.26 24.26 -27.15 36.41 311.78 0.08 MWD None 71 3557.20 2.26 215.08 28.52 3556.71 23.36 23.36 -27.80 36.31 310.03 0.08 MWD None 72 3586.67 2.18 216.17 29.47 3586.15 22.43 22.43 -28.47 36.24 308.23 0.09 MWD None 73 3700.75 2.17 212.69 114.08 3700.15 18.86 18.86 -30.92 36.21 301.38 0.04 MWD None 74 3787.16 2.50 209.01 86.41 3786.49 15.83 15.83 -32.71 36.34 295.83 0.13 MWD None 75 3898.83 2.70 196.27 111.67 3898.05 11.18 11.18 -34.63 36.39 287.89 0.17 MWD None 76 3914.50 2.70 196.27 15.67 3913.70 10.47 10.47 -34.84 36.38 286.73 0.00 Proj to TD [(c)2004 IDEAL ID9_1C_01]