Karoon Gas Australia is revising its previous estimates of the Kangaroo field in the Santos basin offshore Brazil that decreases its 2C resources by nearly 39%. The Australian company is also estimating its Echidna’s light oil gross contingent 2C resource volume to be of 75 MMbbl.
 |
|
Santos basin. Image from Karoon. |
Karoon’s engineers evaluated several aspects including mapping, which used higher resolution reprocessed 2 millisecond 3D seismic data; samples and information was collected from the Palaeocene and Maastrichtian reservoir units in Kangaroo-1, Kangaroo-2 up-dip sidetrack, Kangaroo-2 sidetrack wells, and Echidna-1 exploration wells; reservoir models; and data from other Karoon wells in the joint venture permits and wells in the surrounding area.
Kangaroo
After integrating new well and seismic data, Kangaroo’s 2C resources are now estimated to be 54 MMbbl, instead of 88 MMbbl as originally thought.
The Kangaroo wells are located in S-M-1165.
The Kangaroo-2 and sidetrack wells intersected seven separate oil accumulations, all with different oil water contacts from those seen in Kangaroo-1, Karoon said.
However, the company also said that the net impact of the new data and interpretation is reflected in the new narrower contingent resource range distribution, resulting in the level of certainty that the contingent resource range is now much greater.
Nearby prospects to both Kangaroo and Echidna: Emu up dip, Joey, and Puggle, will provide targets for later drilling as low cost resource additions.
Echidna
Karoon’s Echidna estimate of 75 MMbbl, will bring a total of 129 MMbbl of 2C resource to the area.
The Echidna wells are located in exploration block S-M-1102.
Greater well control and higher resolution seismic data has increased confidence around the contingent resource estimates, which is reflected in a tighter resource range between the 1C and 3C volumes, Karoon said.
In April, Karoon confirmed a 213m gross oil column at the Echidna-1 well.
“This increased confidence in the contingent resource, along with strong production test results and the shallow water and reservoir setting continue to support potential combined and standalone development options,” Robert Hosking, Karoon managing director said.
Brazil’s ANP approves plan
Earlier this week, the Brazilian oil and gas regulator, the Agência Nacional do Petróleo, Gás Natural e Biocombustíveis (ANP) approved Karoon’s revised appraisal plan (PAD) for Karoon’s 65% owned Santos basin Blocks, S-M‐1037, S‐M‐1101, S‐M‐1102, S‐M‐ 1165 and S‐M‐1166.
Firm commitments in the PAD are set to be complete by 31 December 2018 and include two wells to be drilled in the Emu and Echidna area; and the acquisition and processing of 3D seismic.
Contingent commitments set to begin on 1 January 2019, include drilling up to four contingent wells that will result in a six-month extension to the contingent period, which could last as long as 31 December 2020.
Karoon is the operator of Blocks S-M-1102, S-M-1037, S-M-110, S-M-1165 and S-M-1166 with 65% interest. Pacific Rubiales Energy Corp. holds the remaining 35%.
Read more:
ANP approves Karoon revised appraisal plan
Karoon hits at third Santos well
Subscribe
