Core heads

Reservoir Group offer a comprehensive range of core heads, exhibiting numerous unique features that enhance core quality and coring performance.

Reservoir Group offer a comprehensive range of core heads, exhibiting numerous unique features that enhance core quality and coring performance.

Core head development is a continuous process and many of our improvements result from adapting and improving our designs to overcome specific coring challenges.
The extensive product range enables the selection of a core head that, for a particular formation, will deliver optimum performance in terms of core quality, low mud filtrate invasion, core recovery, penetration rates and efficiency.
Reservoir Group Core Heads for out CP core barrel platforms are equipped with a double bearing located inside the crown of the core head. This brings the following benefits
Thrust Bearing – Efficient rotational independence between the Inner and Outer Core Barrel
Radial Bearing – Prevents any lateral movement of the Inner Barrel
Controlled Spacing – to guarantee a minimal flow in the throat.


Three different types of core head technologies are available to cover all coring applications:

Polycrystalline Diamond Cutter (PDC) Core head Technology

Best used in Unconsolidated, soft to hard formation types
Most commonly used Core Head type
Not recommended for formations contain chert or conglomerates
Repairable


TSP Core Head Technology

Medium ROP in medium to hard formations
The best in some specific applications
Not recommended for very hard formations
Cannot be repaired
Expensive


Impregnated Core Head Technology

Designed for very hard and abrasive formations
Can be run with a motor
Cannot be repaired
Offer the higher diamond content



Natural Diamond Core Head Technology

The first ever core bits
Available for all formations but nowadays only used for hard abrasive rocks
Good multi-application bit for exploration wells (versatility)
Cannot be repaired
Cheap