Carina Seismic offers performance beyond geophones
With the combination of up to 20dB improvement in SNR, fine spatial sampling and full wellbore coverage for every shot, Carina Seismic data offers unprecedented detail in every shot record.
Recent field data shows a direct comparison between Carina Seismic and conventional wireline geophones. The test involved acquisition in a well with a Constellation enabled fibre-optic cable cemented behind the casing, with wireline geophones deployed in the same well. The seismic source was a 26,000lb vibroseis situated approx. 700m from the wellhead.
This data, collected at the CO2CRC Otway test site, shows how Carina Seismic offers much greater detail in each shot record compared to geophones. Deep reflections are clearer, slower moving signals such as converted shear reflections are better resolved.
Carina Seismic: stack of 5 sweeps, acquired with full wellbore coverage for every shot. Total acquisition time: ~4mins.
Wireline geophones: stack of 5 sweeps, over 11 tool positions. Total acquisition time: ~4hrs
High quality seismic data at a fraction of the time and cost of conventional methods
Carina Seismic achieves full wellbore coverage for every shot, eliminating the need for repositioning a tool at different depths, enabling vertical seismic profiling within minutes instead of hours.
With permanently installed fibres, the receivers are available at all times with no further deployment costs. Repeat surveys can be acquired on-demand at a fraction of the cost, enabling more frequent surveys giving greater insight into changes in the reservoir.
Silixa’s new suite of advanced software tools provides real-time field deliverables. Acquisition QC plots are generated at the wellsite to ensure high quality, accurate data is collected. SEGY files, fully populated with accurate source and receiver headers, are generated in real-time.
Silixa has worked closely with some of the world’s largest operators to implement IT solutions that enable transfer of data to processing centres around the world. With fast-track processing flows, images can be available a few hours after acquisition for accelerated decision making.