The goal was to assess seabed conditions prior to the emplacement of a drilling rig at three proposed locations (previously drilled) together with reconnaissance survey work at two additional platforms and along a number of proposed cable/pipeline routes. Survey objectives included the following:
- Undertake a Debris Clearance Survey (DCS) at each of the locations.
- Identify and establish areal nature of the previous spud can footprints.
- Establish the nature of the shallow soils, within the top 5m and to a depth of >20- 25m.
- Acquire deep CPT data >20m at two locations.
- Acquire representative data at nominal proposed Relief Well Locations (RWL).
- Reconnaissance of existing platforms and along proposed routes (single lines).
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In addition to a site survey, TDI-Brooks completed gCPT measurements at two proposed drill sites. The purpose of the TDI-Brooks Gravity CPT (gCPT) tool is to transport a precisely calibrated memory cone penetrometer down to the seabed to gather dynamic PCPT cone data from the mud line to 10+ m BML. In addition to its 1,800lb (800 kg) driving head with lifting bale and trigger, the rig comprises a self- contained PCPT cone penetrometer that measures tip resistance (qc), sleeve friction (fs), and pore pressure (u2) using standard ASTM dimensions and protocols for its 15-cm2 cone.
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TDI-Brooks provides laboratory analysis on sediment samples via their state-of-the-art laboratory facility in College Station, Texas. Their environmental, geochemical, and geotechnical laboratories all provide high-quality analytical services and scientific interpretation.
