QGEP gauges two FPSO sizes for Atlanta heavy crude
The first Brazilian independent oil company Queiroz Galvao Exploration & Production (QGEP) and its partners, OGX Petróleo e Gás Participações S.A (OGX) and Barra Energia do Brasil Petróleo e Gás Ltda (Barra Energia), are currently evaluating two different schemes to develop the offshore Block BS-4 and select the corresponding Atlanta FPSO.
To support its growth, QGEP acquired concessions rights in nine offshore blocks in the main Brazilian basins, Camamu-Almada, Campos, Jequitinhonha and Santos.
These concessions include post-salt and pre-salt fields in ultra-deep water.
– QGEP 30% is the operator
– Barra Energia 30%
– OGX 40%
In January 2013, QGEP got the approval of the local Petroleum National Agency (ANP) to develop the Atlanta crude oil field within the the Block BS-4.
Together with the neighboring Oliva field, Atlanta is a field of extra heavy crude oil with 14° API.
Located 185 kilometers distance from the Brazilian coast by 1,550 meters water depth, Atlanta belongs to the southern Santos Basin with 1.5 billion barrels estimated reserves in-place of crude oil.
The satellite field Oliva should hold 360 million barrels of reserves in place.
In volume, the Block BS-4 development program is based on 260 million barrels for Atlanta and 62 million barrels for Oliva.
Genesis to complete Atlanta FPSO conceptual study
To start production QGEP is planning to drill two horizontal wells so that the output from Atlanta should be somewhere between 24,000 b/d and 36,000 b/d.
Then for Atlanta and Oliva full field development, QGEP is considering to drill 10 additional wells by 2019.
This uncertainty on the future production led QGEP and its partners to work on different scenario to develop the Atlanta and Oliva fields.
Based on the scenario considered by QGEP, Genesis is studying a floating production, storage and offloading (FPSO) vessel with 30,000 b/d capacity and alternatively a larger unit with 100,000 b/d capacity.
In one end, the small FPSO could be available shortly and modified for the production of extra heavy crude oil to start in 2014 or early 2015.
But the Atlanta field is too narrow to accept a second FPSO later on to support the expected additional production.
Therefore this small FPSO should be replaced in the future by the large version of 100,000 b/d capacity by 2017.