Rubaco_Drilling_Profile_Compressed

Drilling Services Profile
RUBACO SARL
Comprehensive Drilling Service Provider
26-27, Poteau Rouge, Route Kambove, Commune de Panda, Likasi,
Province du Katanga, R. D. Congo
Mob: +243-9983 92100, +243-9923 47073
E-Mail: services@rubamindrc.com, sales@rubamindrc.com
www.rubamin.com

RUBACO SARL - Comprehensive Drilling Service Provider
1 | P a g e
Our Background
Rubaco SARL is the subsidiary company of flagship Rubamin Group in India.
To know more about the group visit www.rubamin.com
Rubaco SARL is geared to provide a complete range of drilling facilities to
accommodate all types of drilling job for the Congolese mineral
exploration & Mining industry.
Rubaco SARL also maintains a premier health and safety culture for all
parties associated with the company and its operations. Company values
equal importance to environmental protection, operational efficiency,
customer service, and profitability.
Our Strength
 Incorporated in 2004, Rubaco has over ten year strong presence in Africa.
 At Rubaco, we have carefully built an arsenal of drilling tools and materials
to meet all your drilling needs.
 Our selection focuses on accessibility, versatility, accuracy, efficiency and safety.
 Rubaco has an experienced team comprising both Local and Expat professionals. We have a
repertoire of advanced Resources and Technical Collaborations with International Expert Groups.
Drilling Services -
 Mineral Exploration
o Surface Coring / Diamond Drilling – 1500m Depth Capacity
o Reverse Circulation (RC ) Drilling – 200m Depth Capacity
o Multipurpose (RC Pre-Collaring Continued by Diamond tails) Drilling
o Auger
o RAB / Percussion
 Mining
o Grade Control Drilling
o Blasthole Drilling
o Geotechnical Drilling
o Dewatering Holes
o Service Holes
 Water
o Hydro Geological Investigations
o Mine Dewatering
o Production Wells
o Domestic Tube Wells
o Community Wells
 Geo-Technical
 Under Ground Drilling
 Civil (Drill pads, Access Roads) & Others
Figure 2Diamond Drill Rig DE-710
Figure 1 Diamond Drill Rig
KDR 750 in operation

2 | P a g e
Diamond Drill Rigs
1 X CD-180 1500 – 1800 m NQ
4 X DE-710 Drill Rig 1200 m NQ
3 X KDR-1000 Drill Rig 1000 m NQ
2 X LF-90 Drill Rig 900 m NQ
1 X LF-70 Drill Rig 600 m NQ
1 X KDR-750 Drill Rig 750 m NQ
1 X KDR-600 Drill Rig 600m NQ
4 X DM-400/625 500 m NQ
1 x Back Pack Drill 20 m
Multi-Purpose, Percussion (RC / DTH), Rotary, Water well
1 X PRD Multistar Diamond, RC, Water well
1 X Hanjin-700 Drill Rig Diamond, RC, Water well
1 X TM-DTH-NQ-RC Diamond, RC, DTH
1 X Super Rock 5000 RC / Grade Control, Water Well
1 X TC 40 Diamond, RAB, Water Well
1 X PRD Tractor Rig RC / Grade Control, Water Well
1 X PRD Grade Control & Blast hole Rig Grade Control & Blast Hole
2 X KLR 3000 Water Well
1 x DTHR 450 Water well
1 X BEC Geotechnical, Multipurpose, Water Well
NB: New Rigs in addition to above in Transit / Acquisition are KLR – 3000, SuperRock-
5000, Underground Rig, Horizontal Drill Rigs
Civil (Drill pads, Access Roads) & Others
Dozers, Front end Loaders, Dumpers, Backhoe Loaders, etc.
Trucks, Light Vehicles, Water Bowsers, Booster Compressors, Mud Pumps,
Submersible Pumps, Gensets, etc

3 | P a g e
Exploration Drilling (Surface)
Conventional Surface Coring / Diamond Drilling
Diamond Core Drilling facilitates in the extraction of the
insitu rock to surface for the study of the Lithology,
Grade, Structure and Stratigraphy for the Geologists.
Rubaco team is well versed with the Katangan
fractured sediments and have acquired the expertise
to give the best quality (Core Recovery) core to the
client.
It is equipped with the largest number of Diamond
Core Rigs in DRC with various capacities and
mounting to suit all terrain and depth requirements.
Fleet
o Six (6) Crawler Mounted Deep Drilling
Hydrostatic Rigs – upto Max NQ Depth 1500 m
 CD-180- 1 No.
 DE-710 – 4 No.
 KDR-1000- 3 No.
o Four (4) Crawler Mounted Deep Drilling Hydrostatic Rigs – upto Max NQ Depth 1000 m
 LF-90 – 2 No.
 LF-70 – 1 No.
 KDR-750- 1 No.
 KDR-600 – 1 No.
o Four (4) Man portable Rigs – Max Capacity 400 m
o One Back Pack Drill – Capacity 20m
Figure 3 CD-180 Diamond Drill Rig

4 | P a g e
Reverse Circulation Drilling
Reverse Circulation Drilling produces the rock
chips through the inner tube of the double walled
drill string. These samples are uncontaminated true
representative samples.
The RC drilling is a time and cost saving accurate
method to evaluate the potential of large areas and
good in target testing.
Booster Compressors are available for additional
air pressure and volume to control the water
column.
Fleet
Rubaco is equipped with the
 SuperRock 5000
 Hanjin 700
 PRD Multistar
 Tractor Mounted Rig
 BEC Tractor Mounted Rig
Figure 5 Tractor mounted RC RigFigure 6 Booster Compressor
Capacity: 1800 CFM/900 PSI
Figure 4 Track Mounted RC Rig - Hanjin

5 | P a g e
Multipurpose Drilling
Multipurpose Drilling is a cost saving combination of Diamond and RC drilling.
In this method the holes will be with the RC (Reverse Circulation) drill collars and Diamond
Tails.
Rubaco is equipped with three rigs with the facility of RC and Diamond.
Fleet
Rubaco is equipped with the
 Hanjin 700
 PRD Multistar
 BEC Tractor Mounted Rig
Figure 7 Multipurpose Rig "PRD Multistar"

6 | P a g e
Grade Control Drilling
The Grade Control Drilling bridges the gap between the Mine Planning and Production teams
with the accurate evaluation of the Grades of the Ore planned for the excavation.
This is an RC rig suited for the mine.
Fleet
 SuperRock 5000
Figure 8 Super Rock 5000

7 | P a g e
Blasthole Drilling
Rotary and DTH Blasthole drilling for the opencast mines / quarries
Fleet
 PRD 650BH
The Crawler mounted Drill Rig with hydraulic top drive head capable of drilling 4 ½ “to 6” dia
bore holes to a depth of 50 mtrs
An IR make compressor driven by Cummins engine to develop 540 Cfm @ 185 Psi is mounted
on the above track.
Figure 9 Blasthole Rig

8 | P a g e
Service Holes
Large Diameter Holes for the interconnection to the underground workings for the supply
utilities, aggregate, cement, air shafts, etc...
Figure 10 Drill String

9 | P a g e
Water
Borehole Siting
Borehole or well siting is locating a hole on the ground that could yield the best source of
water.
This is done by the Geophysical Survey conducted in the target area.
Rubaco team of Hydrogeologists equipped with the latest Geophysical tools coupled with
about a decade expertise on the DR Congo ground are almost certain in their
recommendation for the Well Siting.
WELL DESIGNING
A water well design involves selection of proper dimensions like the diameter of the well and
that of the casing, length and location of the screen including slot size, shape and percentage
of open area, design of gravel pack, selection of screen material etc.
Good water well design aims to ensure an optimum combination of performance and long
service life.
Rubaco with its experience can guide in the proper well designing.
Dewatering Holes
Rubaco is equipped to
takeup the Mine
Dewatering holes
either vertical or
horizontal.
The vertical Holes vary
in the finish diameter
of 14” (355 mm) to 17”
(430 mm) to the
depths of 200-300 m.
These holes are done
by either a plot RC
/DTH hole reamed or
direct by the Rotary
method.
Figure 11 Large Diameter Mine Dewatering rotary drill unit.

10 | P a g e
Potable / Production / Irrigation Wells
Wells for the Domestic and industrial water utility,
through the percussion and rotary methods.
We also take up the well sunder the community
development programmes of various corporate
clients and NGOs.
We cater the needs of the large diameter
production wells for Irrigation.
Our Hydro Geology Wing is capable of locating the
right place for the potable water with best quality
and quantity parameters.
Piezometer & Monitoring Wells
Drilling, development and installation of
Piezometers
WELL DEVELOPMENT
Well development is the process which causes
reversals of flow through the screen openings so as
to wash out the fines and rearrange the formation
and for particles in a naturally developed well and
form a graded filter with rings of increasing
porosity and permeability towards the well in an
artificially gravel packed well, so that ultimately the well will yield clear sand-free water.
Proper development increases the well efficiency by
Using Compressed air: This method will prove to be rapid and effective when properly used
under favorable conditions. The process involves in combination of surging and pumping. By
means of sudden release of large volumes of air, a strong surge is produced by virtue of the
resistance of water head. Pumping is done with and airlift
Of 8 hours to 72 hours.
TEST PUMPING / AQUIFER PERFORMANCE TEST OF WATER WELLS
 Step Drawdown Test
 Constant Discharge Test
 Recovery Test:
 Slug Test
 Data interpretation to determine aquifer characteristics,
 Transmissibility and storage coefficients of the aquifers……etc
Figure 12 Vibrating piezometer Installation

11 | P a g e
YIELD TEST
o Volumetric discharge measurements
o Orifice meter
o Flow meter measurements,
90 degree/60 degree V-
Notch
WATER QUALITY
The chemical composition of ground
water is related to soluble products of
rock weathering and decomposition
and changes with respect to time and
space. Geochemical studies provide a
complete knowledge of the water
hydrological regimen.
o Drinking water standards
o Quality of water for industrial uses
o Irrigation water quality
e.g.: TDS (total dissolved solids), PH, EC, Turbidity,
Chloride, Nitrate, etc.
SELECTION OF SUITABLE PUMP/PERFORMANCE OF PUMP
After conducting airlift test, aquifer test or pump test, mp pump will be selected by observing
drawdown with respect to time and observation of flow rate. E.G.
o Characteristic curves of pump
o Total head
o Horse power consumed
o Pump efficiency
o Particular operating speed ….etc
o Pump size
o Bowl diameter
o Capacity range
o Head
Figure 13 Airlift

12 | P a g e
GeoTechnical
Geotechnical Drilling is related to the construction of a
structure such as plant, building or other to check the
ground (Soil / Rock) parameters and their suitability.
Rubaco can take up the tests such as
 SPT (Standard Penetration Test)
 Shelby Tube Test
 Hollow Stem Auger
 Triple tube Core Drilling
 Rotary drilling
 Core Orientation
 Water level measurements
 Piezometer installations and others
Figure 15 Geotechnical (SPT) Test in progress
Figure 16 Test Sample
Figure 14 New Multipurpose GeoTech Rig

13 | P a g e
Other Works
 Drill pads and Access
Roads for the
Exploration sites
 Topographic Survey

14 | P a g e
Our Clientele
In addition to the in-house exploration we provide services to other prestigious clients. The satisfied
clientele of our services include various National and International Public / Private Companies.
Client Contract Drilling Performed
KCC Diamond, Geotechnical, Mine Dewatering,
Piezometer, Packer tests, Service holes and
Community Water wells
MUMI Diamond Drilling & Grade Control Drilling
Gecamines SARL Diamond Drilling & Grade Control RC Drilling
GCM – KCC Diamond Drilling
VALE Diamond Drilling (Portable)
Enterprise Swanepoel SARL Geo Technical Drilling
GCK SARL Blast Hole Drilling
HPC Diamond, Geo-Technical, Hydrogeological
SAFRICAS Blasthole Drilling
African Metals (LME SPRL) Diamond Drilling & RC Drilling
Huachin Metal Leach SPRL RC Drilling
Mboula Mining RAB Drilling
United Mining SPRL RC Drilling
MMSC SPRL RC Drilling
Mineral Corp. Ltd. Diamond Drilling
Trust Mining Blast Hole Drilling
Clairmont (Canada) RC Drilling
Rubamin SARL Diamond Drilling & RC Drilling
Minalex SARL Diamond Drilling, RAB Drilling & Auger Drilling

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