SCHLUMBERGER Survey report 24-Oct-2007 17:01:18 Page 1 of 2 Client...................: Japan Agency for Marine-Earth Science and Technology Field....................: Nankai-Kumano Well.....................: C0002A Spud date................: 13-Oct-07 API number...............: 07CHS0064 Last survey date.........: 17-Oct-07 Engineer.................: M. Jakulj/C. Xi/Q.G. Ming Total accepted surveys...: 30 MD of first survey.......: 1964.50 m Rig:.....................: Chikyu MD of last survey........: 3339.09 m STATE:...................: Japan ----- Survey calculation methods------------- ----- Geomagnetic data ---------------------- Method for positions.....: Minimum curvature Magnetic model...........: BGGM version 2007 Method for DLS...........: Mason & Taylor Magnetic date............: 06-Oct-2007 Magnetic field strength..: 916.75 HCNT ----- Depth reference ----------------------- Magnetic dec (+E/W-).....: -6.50 degrees Permanent datum..........: Mean Sea Level Magnetic dip.............: 46.65 degrees Depth reference..........: Drill Floor GL above permanent.......: -1948.00 m ----- MWD survey Reference Criteria --------- KB above permanent.......: 28.50 m Reference G..............: 999.59 mGal DF above permanent.......: 28.50 m Reference H..............: 916.75 HCNT Reference Dip............: 46.65 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-).........: 0.00 m Magnetic dec (+E/W-).....: -6.50 degrees Departure (+E/W-)........: 0.00 m Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: -6.50 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)2007 IDEAL ID12_0C_12] SCHLUMBERGER Survey Report 24-Oct-2007 17:01:18 Page 2 of 2 === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== 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) 10m) type (deg) === ======== ====== ======= ====== ======== ======== ================ =============== ===== ===== ====== 1 1964.50 0.00 0.00 0.00 1964.50 0.00 0.00 0.00 0.00 0.00 0.00 TIP None 2 2000.77 0.34 313.18 36.27 2000.77 0.07 0.07 -0.08 0.11 313.18 0.09 MWD None 3 2115.82 0.75 277.77 115.05 2115.81 0.41 0.41 -1.07 1.15 290.86 0.04 MWD None 4 2231.12 0.95 278.99 115.30 2231.10 0.66 0.66 -2.77 2.84 283.43 0.02 MWD None 5 2271.98 0.93 280.92 40.86 2271.96 0.78 0.78 -3.43 3.51 282.77 0.01 MWD None 6 2348.80 0.95 271.40 76.82 2348.77 0.91 0.91 -4.67 4.76 281.01 0.02 MWD None 7 2383.17 1.09 267.46 34.37 2383.13 0.90 0.90 -5.29 5.36 279.69 0.05 MWD None 8 2420.17 1.05 264.57 37.00 2420.12 0.85 0.85 -5.97 6.04 278.14 0.02 MWD None 9 2458.22 1.09 262.91 38.05 2458.17 0.78 0.78 -6.68 6.73 276.63 0.01 MWD None 10 2499.11 1.23 266.27 40.89 2499.05 0.70 0.70 -7.50 7.54 275.33 0.04 MWD None 11 2536.07 1.20 266.85 36.96 2536.00 0.65 0.65 -8.29 8.31 274.51 0.01 MWD None 12 2559.83 1.21 264.21 23.76 2559.76 0.61 0.61 -8.79 8.81 274.00 0.02 MWD None 13 2615.89 1.34 266.60 56.06 2615.80 0.52 0.52 -10.03 10.04 272.94 0.03 MWD None 14 2652.28 1.33 264.85 36.39 2652.18 0.45 0.45 -10.87 10.88 272.38 0.01 MWD None 15 2727.25 1.55 265.28 74.97 2727.13 0.29 0.29 -12.75 12.75 271.31 0.03 MWD None 16 2765.75 1.67 265.81 38.50 2765.61 0.21 0.21 -13.83 13.83 270.86 0.03 MWD None 17 2842.01 1.75 268.78 76.26 2841.84 0.10 0.10 -16.10 16.10 270.36 0.02 MWD None 18 2880.16 1.76 269.22 38.15 2879.97 0.08 0.08 -17.27 17.27 270.27 0.00 MWD None 19 2918.36 2.06 251.55 38.20 2918.15 -0.14 -0.14 -18.51 18.51 269.55 0.17 MWD None 20 2957.11 2.50 231.03 38.75 2956.87 -0.90 -0.90 -19.83 19.85 267.41 0.24 MWD None 21 2996.34 2.87 228.70 39.23 2996.06 -2.08 -2.08 -21.23 21.33 264.40 0.10 MWD None 22 3033.69 3.24 223.89 37.35 3033.35 -3.46 -3.46 -22.66 22.93 261.32 0.12 MWD None 23 3071.10 4.01 215.60 37.41 3070.69 -5.29 -5.29 -24.16 24.73 257.66 0.25 MWD None 24 3107.78 4.13 214.75 36.68 3107.28 -7.41 -7.41 -25.66 26.71 253.88 0.04 MWD None 25 3145.52 4.05 228.85 37.74 3144.92 -9.41 -9.41 -27.43 29.00 251.07 0.27 MWD None 26 3182.24 4.69 225.98 36.72 3181.53 -11.30 -11.30 -29.49 31.58 249.03 0.18 MWD None 27 3223.37 4.67 227.41 41.13 3222.53 -13.61 -13.61 -31.93 34.71 246.92 0.03 MWD None 28 3262.38 4.21 232.90 39.01 3261.42 -15.54 -15.54 -34.24 37.61 245.59 0.16 MWD None 29 3301.01 4.01 252.09 38.63 3299.95 -16.81 -16.81 -36.66 40.33 245.36 0.36 MWD None 30 3339.09 4.25 250.24 38.08 3337.93 -17.70 -17.70 -39.25 43.06 245.73 0.07 MWD None [(c)2007 IDEAL ID12_0C_12]