Nabrajah
| Location |
Southern Hadramaut Governorate of Yemen
|
| Permit |
Block 43 |
| Oil Search's interest |
28.33% equity and 33.33% paying interest |
| JV Partners |
DNO (56.67% equity and 66.67% paying interest), Yemen General Corporation for Oil & Gas (15% equity) |
| Operator |
DNO |
| Original Recoverable 2P Reserves (gross) |
9.7 million barrels |
| Remaining Recoverable 2P Reserves (gross, as at 31 Dec 2007) |
2.8 million barrels |
In 2003, Oil Search farmed-in to Block 43 in Yemen. The second well to be drilled on the Block in early 2004, Nabrajah-1, discovered oil in the Qishn S1 and S2 sandstone objectives. Following a three well appraisal programme, the Block partners, led by Norwegian operator DNO, decided to develop the field by way of an Early Production Facility using leased processing equipment. The development plan was submitted to the Yemeni Authorities in late 2004.
The initial development comprised five production wells, one water injection well and a 12 kilometre pipeline to the adjacent Block 14 where the oil is processed and piped to the coast for export using existing infrastructure. The Block 43 partners pay a tariff to Block 14 for the use of its facilities. The field commenced production in July 2005, and production rates peaked at over 11,000 bopd in 2006.
In 2005, the Nabrajah-5 appraisal well discovered oil in two new horizons, the Basement, which is a prolific producer in nearby blocks, and in the overlying Kohlan formation. Initial appraisal of these new horizons has been unsuccessful. Consequently, 3D seismic was acquired over the Block, to assist in optimally locating future appraisal/development wells, as well as identifying additional exploration prospects. An appraisal/development driling programme is ongoing. Oil Search's working interest in Nabrajah is 28.3% Recent Performance
Production net to OSH
| mmbbl | 1Q | 2Q | 3Q | 4Q | Year |
| 2005 |
0 |
0 |
0.03 |
0.14 |
0.17 |
| 2006 |
0.16 |
0.16 |
0.14 |
0.11 |
0.57 |
| 2007 |
0.14 |
0.14 |
0.12 |
0.12 |
0.52 |
| 2008 |
0.11 |
0.04 |
|
|
0.15 |
Last quaterly report
Gross production from the Nabrajah field during the first quarter of 2008 was 0.55 million barrels, produced at an average rate of 6,048 bopd. Oil Search’s net entitlement share (defined as cost oil plus profit oil) was 0.11 million barrels, 5% lower than in the fourth quarter of 2007.
Debottlenecking of the Qishn CPF and the Basement CPF continued during the quarter. The Qishn CPF upgrade is now planned to be completed by the end of May 2008 and the Basement CPF upgrade by mid June 2008.
Nabrajah-17 was spudded in early March to develop the north-eastern part of the field based on a recent reinterpretation of the area. The well came in low to prognosis, however, was successfully sidetracked updip, encountering Qishn S1 and S2 reservoir intervals above the Oil: Water contact. Reservoir pressures were above expectations, indicating the area has not been swept by previous main-field production wells. Nabrajah-17 S has recently been completed and tied-back to the CPF and is now in production.
Interpretation of the 3D seismic survey continues to focus on establishing the viability of exploration and development targets within and close to the Nabrajah field. The operator expects to alternate drilling exploration wells with Nabrajah field development wells over the balance of the year.
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