Core orientation

 

Core orientation is the process by which the original in situ position or orientation of a core cylinder is determined. Typically, a mark, groove, or line is placed on the surface of the core using gravity as reference and the in situ azimuth of the marking is determined with respect to geographic north. Cores are oriented to facilitate measurement of directional properties in the rock. Most routinely, orientation is used to measure large scale features such as bedding, cross-bedding, fractures and flow textures. The obtained data can later be fed directly into the ore-reserve estimation for planning of orebody extraction, safe and economical mine and shaft design as well as various infrastructure projects - all a good reason to implement core orientation into your drilling program.

ORICORE® core orientation services

Aziwell provides a new approach to core orientation with our ORICORE® Core Orienter. The system is first of its kind that simply replace the core barrel head with a logging device. Thus no need to retrieve the rods to install and later dismantle the orienter and full length of core is achieved. As a consequence core orientation can now be done with little or no loss of production, compared to conventional systems that require rigid planning and cause substantial down time in production whenever used. With the ORICORE® as little as 3m of the hole can be oriented without any extra cost involved. 

 

By implementing ORICORE® to your drilling program you will have fast and easy access to highly accurate measurements and can reduce crew and rod handling related to core orientation with up to 94%.

 

AZIDRILL® core orientation

AZIDRILL® has the capability to preform core orientation while steering. The system is first of its kind, and ensures oriented core, even in steered sections.

Applications

 

Measurements of large scale features

Mapping of large scale features such as bedding/foliations, folds, cross-beddings, fractures and flow textures.

 

Measurements of downhole stress and strain fields

In recent years, oriented core has been used to establish the directions of downhole stress and strain fields. 

 

Collection data for slope stability analyses

Oriented core samples can provide supplemental information for slope stability analyses, such as structure and properties of discontinuities encountered, to better understand favorable and unfavorable conditions within a rock slope and underground openings.