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Hydrocarbs specializes in reverse circulation (RC) and diamond core drilling. The main fleet consists of a multipurpose rig, which have the ability to perform both RC and core drilling. This enables the flexibility for transition mid-way through a hole based on client requirements with one rig, rather than having two rigs on site. There is thus a subsequent reduction in cost associated with mobilization and demobilization. A significant time is saved thus enabling us to attain and exceed our client’s drill programme.

Hydrocarbs offers different types of drilling services as summarized below:

Reverse Circulation (RC)

Reverse Circulation (RC) is the method of choice for obtaining consistently high quality rock chip samples with speed and efficiency. RC drilling typically involves drilling about 200-400 into the ground. In terms of pricing, whereas the RC is more expensive than air-core drilling, it is less expensive than diamond core drilling. Samples are normally collected at various depths using a percussion RC hammer, which is pneumatic-driven, and pulverizes the rock. The sample is then transferred to the surface through an inner tube and collected via a cyclone and into a sample bag.

       Diamond Core


  • Core drilling is a system that drills and collects a core (cylindrical) sample in the state in which it is found (undisturbed sample), i.e. in situ. The system known as ‘wire-line coring’ is used, i.e. a diamond impregnated (hollow) core bit is used which cuts until the core barrel is full. Drilling mud/cutting   cools/lubricates the drill bit and acts as medium for lifting cuttings to surface. This method is used to drill to depths up to 1500m. A diamond-impregnated drill bit cuts a core of a rock; hence it is often referred to as 'diamond' coring. The core sample is removed at intervals, usually 3 meters, and catalogued.


  • Core Drilling

Core Drilling (CD) is a system that drills and collects a core (cylindrical) sample in the state it is found, i.e. in-situ. The system known as ‘wire-line coring’ is used, ie. a diamond impregnated (hollow) core bit is used which cuts until the core barrel is full. Drilling Mud/Cutting oil cools/lubricates bit and acts as medium for lifting cuttings to surface.

The scope of our Core Drilling includes the following sizes:

  • NQ2 Ø 50.5 mm (2 inch)
  • HQ Ø 63.5 mm (2 1/2 in)
  • HQ3 Ø 61.1 mm (2 13/32 in)
  • PQ Ø 85.0 mm (3 11/32 in)
  • PQ3 Ø 83.0 mm (3 9/32 in)


  • Reverse Circulation

Reverse Circulation (RC) - RC drilling involves drilling to circa 400 meter and it the most common type of drilling. It is generally faster than diamond core drilling and generally produces better samples and better penetration than rotary air blast drilling (RAB). This method is more expensive then Air-core drilling but less expensive than Core drilling. RC drilling produces rock chips rather than core. This method collects samples from depth by pulverizing the rock which is then blown up through an inner tube and collected in a sample bag. This method is often used for reconnaissance and exploration drilling. Hydrocarbs is capable of drilling using the latest Face Sampling hammers & equipment drilling holes with 140mm dia. to depths of between 50 - 400 meters.


  • Directional Drilling


Hydrocarbs has the capability to undertake directional drilling where deviation control is required, intersecting targets below inaccessible locations, allowing multiple target intersections by deviating branch holes from parent hole and altering course of a drill hole to intersect target.


  • Drill Rigs

Hydrocarbs operates with a very versatile multipurpose Mintec 12.8 crawler mounted drill rig. The rig is self-contained, with its own on-board world leading Ingersoll Rand compressor. A side-mounted rod racks for easy loading of RC and diamond drill rods.

The company also expects a fleet of drilling rigs to be added to its current fleet in the first quarter of 2013.

  • Support Equipment

A wide variety of support vehicles are also operated alongside the rig. Truck-mounted booster and auxilliary compressors are always present on site to support the rig when required. Purpose-built crawler-mounted support vehicles (Mule), and 4x4 Bell Tractors, assist to ensure smooth drilling operations 24/7 are also present. Combined with a substantial number of MAN trucks (6x6, 6x4 and 4x4), numerous other trucks and bowsers, and a fleet of Toyota Landcruiser pickups, workers can operate efficiently, safely, in steep or difficult terrain, without any delays.

  • Work Force

Efficient drill program and accurate results depends on a high degree of skill and technical competence. The Company recognizes that the profitability of any given project is determined in part by how effectively the drill rigs can be operated and the samples collected. Management believes that Hydrocarbs’ training and monitoring program facilitates these goals in being achieved.

Hydrocarbs currently employs 30 personnel for both Operations and Administration.

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