Santos Basin

Canada-based oil and gas company Pacific Rubiales Energy has announced the discovery of light oil at the Kangaroo-1 exploration well, in block S-M-1101 in the Santos Basin, offshore of Brazil.

The well has been drilled to a depth of 3,049 metres, while mudlog, wireline petrophysical and MDT pressure data has confirmed the presence of a light oil column in Eocene aged rocks.

Analyses of pressure data has established a gross column of 25 metres and an oil / water contact in the well.

During spudding, the well intersected the Eocene reservoir section 300 metres down dip from the trap crest, as earlier identified on seismic mapping conducted by Karoon Gas Australia, the operator of S-M-1101 and S-M-1165 blocks.

Pacific Rubiales is currently conducting a wireline programme at the well, full results of which are expected in the coming days, while a drill stem test programme will be carried out once the wireline evaluation is complete.

The company said that the full evaluation programme for the well is expected to continue through to February 2013.

On 18 September 2012, Pacific Rubiales Energy signed an agreement to drill the well, as a minimum work commitment for both the blocks, where it has 35% participating interest.

The company holds a 100% interest in PetroMagdalena Energy, which owns light oil assets in Colombia, plus 100% interest in C&C Energia, which owns light oil assets in the Llanos Basin.

Located in the South Atlantic Ocean, about 300km south-east of São Paulo, Brazil, the Santos Basin is a 352,260m² offshore bear trap pre-salt basin.

Major oil fields in the basin include Tupi and Jupiter, whereas Sugar oil field is expected to contain 25 and 40 billion barrels of oil.


Image: Santos Basin. Photo courtesy of Mmm.