Origin Energy CSG Limited - ANNUAL PETROLEUM LEASE REPORT Table 2: Production Volumes Permit: PL41 Period: 1-Jun-05 to 31-May-06 Reservoir Water Production Total Petroleum Production "Flared/ Vented Gas" Fuel Gas Injected Petroleum s 13 (1-f) s 13 (1-g) s 13 (1-i) s 13 (1-j) s 13 (1-k) Gas Condensate Gas (ML) (Mm3) (ML) (Mm3) (Mm3) (Mm3) Mantuan (AM) 0.0105 14.45 0.0000 0.00 0.49 0.00 Mantuan (SM) 0.0563 4.15 0.0000 0.00 0.21 0.00 Catherine (SC1) 0.0037 3.93 0.0000 0.00 0.20 0.00 Catherine (SC3) 0.0139 12.57 0.0000 0.00 0.64 0.00 Lower Catherine (SCL) 0.0003 0.11 0.0000 0.00 0.01 0.00 Freitag (SF) 0.1076 20.20 0.0000 0.00 1.03 0.00 Aldebaran (SA1) 0.0000 0.00 0.0000 0.00 0.00 0.00 Aldebaran (SA2) 0.0000 0.00 0.0000 0.00 0.00 0.00 Lower Aldebaran (SAL1) 0.1179 0.56 0.0043 0.00 0.03 0.00 Lower Aldebaran (SAL27) 0.7836 3.74 0.0288 0.00 0.19 0.00 Staircase (SS) 0.0979 0.47 0.0036 0.00 0.02 0.00 NOTES 1. Flared / Vented gas during workovers or testing 2. Fuel gas has been back allocated to each PL and reservoir based on production "3. Total Petroleum Production is the total amount of gas which came out of the well, not the gas sold. Includes impurities eg CO2" Origin Energy CSG Limited - ANNUAL PETROLEUM LEASE REPORT Table 2: Production Volumes Permit: PL42 Period: 1-Jun-05 to 31-May-06 Reservoir Water Production Total Petroleum Production "Flared/ Vented Gas" Fuel Gas Injected Petroleum s 13 (1-f) s 13 (1-g) s 13 (1-i) s 13 (1-j) s 13 (1-k) Gas Condensate Gas (ML) (Mm3) (ML) (Mm3) (Mm3) (Mm3) Mantuan Sth (RM) 0.0086 1.35 0.0000 0.00 0.04 0.00 Mantuan Nth (RM) 0.0023 2.00 0.0027 0.00 0.06 0.00 Freitag Nth (RF) 0.0058 5.54 0.0048 0.00 0.17 0.00 Freitag Sth (RF) 0.1097 24.22 0.0200 0.18 0.77 0.00 Aldebaran Nth (RA) 0.0363 10.66 0.0162 0.00 0.34 0.00 Aldebaran Sth (RA) 0.0276 7.31 0.0050 0.00 0.23 0.00 Lower Aldebaran (RAL) 0.0030 2.20 0.0005 0.00 0.07 0.00 NOTES 1. Flared / Vented gas during workovers or testing 2. Fuel gas has been back allocated to each PL and reservoir based on production "3. Total Petroleum Production is the total amount of gas which came out of the well, not the gas sold. Includes impurities eg CO2" Origin Energy CSG Limited - ANNUAL PETROLEUM LEASE REPORT Table 2: Production Volumes Permit: PL43 Period: 1-Jun-05 to 31-May-06 Reservoir Water Production Total Petroleum Production "Flared/ Vented Gas" Fuel Gas Injected Petroleum s 13 (1-f) s 13 (1-g) s 13 (1-i) s 13 (1-j) s 13 (1-k) Gas Condensate Gas (ML) (Mm3) (ML) (Mm3) (Mm3) (Mm3) Aldebaran Sth (SMA) 0.0001 0.03 0.0001 0.00 0.00 0.00 Aldebaran (SMA) 0.0045 1.64 0.0059 0.00 0.06 0.00 Reids Dome (SMRD) 0.0000 2.28 0.0052 0.00 0.08 0.00 Rewan (YR) 0.0018 1.87 0.0000 0.00 0.07 0.00 Aldebaran (YA) 0.1615 63.97 0.4347 0.00 2.37 0.00 NOTES 1. Flared / Vented gas during workovers or testing 2. Fuel gas has been back allocated to each PL and reservoir based on production "3. Total Petroleum Production is the total amount of gas which came out of the well, not the gas sold. Includes impurities eg CO2" Origin Energy CSG Limited - ANNUAL PETROLEUM LEASE REPORT Table 2: Production Volumes Permit: PL44 Period: 1-Jun-05 to 31-May-06 Reservoir Water Production Total Petroleum Production "Flared/ Vented Gas" Fuel Gas Injected Petroleum s 13 (1-f) s 13 (1-g) s 13 (1-i) s 13 (1-j) s 13 (1-k) Gas Condensate Gas (ML) (Mm3) (ML) (Mm3) (Mm3) (Mm3) Aldebaran (MA1) 0.0133 7.98 0.0831 0.00 0.48 0.00 Aldebaran (MA2) 0.0031 1.81 0.0266 0.00 0.11 0.00 Aldebaran (MA3) 0.0004 1.63 0.0097 0.00 0.10 0.00 Aldebaran (MA4) 0.0144 4.37 0.0289 0.00 0.26 0.00 Reids Dome (MRD) 0.1861 19.41 0.2044 0.00 1.17 0.00 Lower Reids Dome (MRDL) 0.0278 0.75 0.0098 0.00 0.05 0.00 Aldebaran (WA) 0.0265 37.54 0.1702 0.00 1.39 0.00 NOTES 1. Flared / Vented gas during workovers or testing 2. Fuel gas has been back allocated to each PL and reservoir based on production "3. Total Petroleum Production is the total amount of gas which came out of the well, not the gas sold. Includes impurities eg CO2" Origin Energy CSG Limited - ANNUAL PETROLEUM LEASE REPORT Table 2: Production Volumes Permit: PL45 Period: 1-Jun-05 to 31-May-06 Reservoir Water Production Total Petroleum Production "Flared/ Vented Gas" Fuel Gas Injected Petroleum s 13 (1-f) s 13 (1-g) s 13 (1-i) s 13 (1-j) s 13 (1-k) Gas Condensate Gas (ML) (Mm3) (ML) (Mm3) (Mm3) (Mm3) Aldebaran (GA) 0.1662 80.21 0.3532 0.00 4.82 0.00 NOTES 1. Flared / Vented gas during workovers or testing 2. Fuel gas has been back allocated to each PL and reservoir based on production "3. Total Petroleum Production is the total amount of gas which came out of the well, not the gas sold. Includes impurities eg CO2" kL km3 PJ kL kL FIELD_NAME RESERVOIR SumOfH2O SumOfCPROD CGPJ SumOfCCOND SumOfCH2O InDate ARCTURUS MANTUAN 1.358711486 590423.7056 21.5868925 0 883.0907097 31-May-06 GLENTULLOCH GA 10.92592975 360367.442 12.24139851 1475.800101 952.0099475 31-May-06 MERIVALE MA1.1 1.24847114 395916.6933 16.18799192 8236.923579 951.1838638 31-May-06 MERIVALE MA2.1 0.285139862 62917.27067 2.580099277 1009.287698 217.5951745 31-May-06 MERIVALE MA3 0.030059955 69593.97892 2.858586603 1199.344996 67.39702695 31-May-06 MERIVALE MA4 2.025430645 418947.0122 16.89689427 7021.66713 1471.26058 31-May-06 MERIVALE MRD1 11.5476801 303954.1168 11.98204805 5234.733496 2139.74571 31-May-06 MERIVALE MRDL 1.60924766 11019.80019 0.406630627 232.5724463 407.732607 31-May-06 MYRTLEVILLE SMA1 0 148226.4859 5.564910311 1187.453696 217.1296236 31-May-06 MYRTLEVILLE SMA1 STH 0 9905.70588 0.408115082 50.55020431 27.09265498 31-May-06 ROLLESTON RA1 NTH 1.64624586 83644.7163 3.159263584 90.65776453 206.2319516 31-May-06 ROLLESTON RA1 STH 0.705709471 90028.56092 3.41865231 111.3925251 301.0899381 31-May-06 ROLLESTON RAL NTH 0.296353716 13099.7875 0.484787381 7.676629475 11.14866386 31-May-06 ROLLESTON RF1 NTH 0.190173974 44168.8493 1.64906589 297.105964 26.6253635 31-May-06 ROLLESTON RF1 STH 11.06358315 661316.7484 24.847581 1223.126944 1029.802127 31-May-06 ROLLESTON RM1 NTH 0.19662664 30278.901 1.127187353 7.672808997 9.585070518 31-May-06 ROLLESTON RM1 STH 0 180057.4128 6.560353581 1.475855603 517.4769251 31-May-06 SPRINGTON SA1 0 62877.56845 2.383059844 1.471785701 762.9881779 31-May-06 SPRINGTON SA2 0 3303.023 0.123103667 0 1.733894876 31-May-06 SPRINGTON SAL1 9.63416055 3444.34 0.140735732 21.98131461 678.5620328 31-May-06 SPRINGTON SAL27 64.01006199 22884.431 0.935057851 146.0453622 4508.412529 31-May-06 SPRINGTON SC1 0.072758444 95260.9851 3.48724408 0 103.5520439 31-May-06 SPRINGTON SC3 1.526489459 354156.492 13.05346629 0 278.443357 31-May-06 SPRINGTON SCL1 0 4193.461 0.154738711 0 9.063524164 31-May-06 SPRINGTON SF3 7.2870238 277155.9006 10.39728318 24.85584396 1946.584845 31-May-06 SPRINGTON SM1 5.94361318 73893.011 2.724435316 0 664.7960318 31-May-06 SPRINGTON SS1 8.00128392 2860.548 0.116881991 18.25563047 563.5504061 31-May-06 SPRINGVALE SMA1 0 216631.3125 8.015941747 1767.437585 177.9537599 31-May-06 SPRINGVALE SMRD1 0 14275.68214 0.391869726 41.73320938 0 31-May-06 WESTGROVE WA 2.295516245 154801.2316 4.582116457 599.5380838 116.2431295 31-May-06 YELLOWBANK YA 14.90635259 1646436.981 48.25229776 20417.69759 3504.66444 31-May-06 YELLOWBANK YR2 0 50531.28514 1.860842671 0 40.22127227 31-May-06 kL km3 PJ kL kL FIELD_NAME RESERVOIR SumOfH2O SumOfCPROD CGPJ SumOfCCOND SumOfCH2O InDate ARCTURUS MANTUAN 1.228290021 575977.5096 21.05615485 0 872.566551 31-May-05 GLENTULLOCH GA 14.28202332 280159.9882 9.523679817 1122.58773 785.7630468 31-May-05 MERIVALE MA1.1 1.31814282 387934.4407 15.85923504 8153.797788 937.8771814 31-May-05 MERIVALE MA2.1 0.441020888 61108.77381 2.506312605 982.6905116 214.4881769 31-May-05 MERIVALE MA3 0.057451847 67964.01804 2.791635634 1189.678536 66.97754639 31-May-05 MERIVALE MA4 1.861596482 414574.03 16.7162901 6992.722578 1456.899706 31-May-05 MERIVALE MRD1 11.85644434 284546.5304 11.21973934 5030.303888 1953.611588 31-May-05 MERIVALE MRDL 1.6873517 10269.27643 0.3789363 222.7810421 379.9632279 31-May-05 MYRTLEVILLE SMA1 0.446786189 147345.0116 5.531855025 1184.102682 214.4186494 31-May-05 MYRTLEVILLE SMA1 STH 0.060548622 9876.96201 0.406930835 50.4738253 27.02085279 31-May-05 ROLLESTON RA1 NTH 4.106003099 72985.8123 2.75743823 74.45014798 169.940014 31-May-05 ROLLESTON RA1 STH 3.02079738 82720.28782 3.141166857 106.4177913 273.4650241 31-May-05 ROLLESTON RAL NTH 0.257495771 10894.8565 0.403204934 7.155745567 8.174211937 31-May-05 ROLLESTON RF1 NTH 0.779669644 38630.6303 1.442766737 292.3538034 20.84362713 31-May-05 ROLLESTON RF1 STH 8.67008462 637098.0663 23.93449103 1203.11712 920.0900695 31-May-05 ROLLESTON RM1 NTH 0.234071054 28279.905 1.054024099 4.939110796 7.328204034 31-May-05 ROLLESTON RM1 STH 0.88291035 178710.3958 6.511456864 1.475855603 508.9233671 31-May-05 SPRINGTON SA1 0 62877.56845 2.383059844 1.471785701 762.9881779 31-May-05 SPRINGTON SA2 0 3303.023 0.123103667 0 1.733894876 31-May-05 SPRINGTON SAL1 11.06667009 2881.066 0.117720357 17.64393316 560.6293555 31-May-05 SPRINGTON SAL27 73.52781282 19141.995 0.782141916 117.2274849 3724.858704 31-May-05 SPRINGTON SC1 1.665607335 91332.7861 3.343746158 0 99.8781524 31-May-05 SPRINGTON SC3 1.622285202 341590.513 12.58992842 0 264.5124728 31-May-05 SPRINGTON SCL1 0.168868852 4084.829 0.15073019 0 8.746210092 31-May-05 SPRINGTON SF3 12.43970778 256959.9846 9.641409706 24.85584396 1839.025316 31-May-05 SPRINGTON SM1 6.25328652 69738.633 2.571263399 0 608.5457537 31-May-05 SPRINGTON SS1 9.19092426 2392.745 0.097767561 14.65340596 465.606492 31-May-05 SPRINGVALE SMA1 0.200736516 215871.6385 7.987909775 1764.908639 176.1935952 31-May-05 SPRINGVALE SMRD1 0 11996.65986 0.333070951 36.50894912 0 31-May-05 WESTGROVE WA 2.713555338 117258.5072 3.470851814 429.378256 89.77027177 31-May-05 YELLOWBANK YA 16.56862529 1582465.981 46.37991671 19983.02755 3343.175249 31-May-05 YELLOWBANK YR2 0.007079088 48659.65674 1.791918914 0 38.42450901 31-May-05