Gregg Marine Services offers offshore drilling, sediment sampling, and cone penetration testing (CPT) services. Our drill ship, the Quin Delta, is a self propelled ocean going vessel with a draft of only 5-feet. This allows for offshore drilling in a wide range of locations, from deep waters, to harbors, rivers and shallow inland locations. The Quin Delta is equipped with 80-foot spuds which can be used for stable anchoring in waters up to 70-feet deep.

The Quin Delta is ideally suited for offshore foundation and liquefaction studies, soil sampling and coring, and for establishing baseline conditions and material quantities for dredging programs.

 The Quin Delta Drill Ship

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 for more about THE QUIN DELTA.

CPT soundings can be completed using either a conventional CPT system deployed by the B-80 or with our specially designed "minicone" system. The minicone system is a miniaturized CPT system that utilizes a coilable cone rod and thruster unit mounted in a cage that is lowered to the seafloor. The minicone is attached to a shipboard data acquisition system and results can be viewed in real-time during the sounding. The minicone can also be controlled by ROV.  The minicone system allows for rapid deployment and completion of CPT soundings in water as deep as 10,000-feet.

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 for more ON THE MINICONE.
 

Gregg also operates vibra-core and gravity core sampling systems that can be used to collect near surface soil cores. The vibra-core system can be used to collect core samples to depths up to 20’. The gravity core system is useful for quickly sampling soils to a depth of 5’.  For deeper coring, Gregg uses an OW coring system.  The OW system is capable of obtaining 2” cores and 3” Shelby tube or 3” split spoon samples.

Gregg Marine Services also operates portable minicone, CPT, drilling, and coring systems that may be deployed on other vessels. Previous use has included jack-up boats and barges for over-water drilling and CPT. 

Portable spud barge developed for water 3’ to 20 ‘ in depth and capable of anchoring in deeper waters.