GROUND WATER EXPLORATION AND EXPLOITATION IN SRI LANKA
NO 01 Drilling Company in sri Lanka
By
Deepal Chandima
Global Water Systems (Pvt)ltd
Kandy
Tel0714348263/0714348317
Global Water Systems
Your Single Source for Efficient, Safe and Reliable Ground Water Resource Management
With its historic roots in high-capacity well drilling,
Global Water Company has expanded its services to clients and industries around the Sri Lanka.
A publicly traded company (Wijesena Group of Company), Global Water
Company provides sophisticated drilling services and related products and services in several principal
markets:
Our Vision
The company's vision is to provide top-quality service in the most efficient, cost-effective manner possible while never once losing sight of the client's specific needs.
OUR MISSION
To consult and development work
to provide technical services to Enviromental,Geotechnical and Groundwater extraction and tube well drilling sectors,
with a view to improving the quality of life in Sri Lanka
Our Main Services
ENVIRONMENTAL PROTECTION AND ASSESSMENTS
NON-STOP EMERGENCY RESPONSE
SITE INVESTIGATION
ENVIRONMENTAL AUDITS
RISK ASSESSMENT
ENVIRONMENTAL IMPACT ASSESSMENT (E.I.A.)
SITE REMEDIATION - REMEDIATION SYSTEM DESIGN AND IMPLEMENTATION
ENVIRONMENTAL CONSULTING
DESIGN AND PRODUCTION OF VARIOUS REMEDIATION TECHNOLOGY EQUIPMENT
WASTE DISPOSAL
WATER MANAGEMENT
GROUND WATER PROSPECTING
Hydrogeological & geophysical investigation
WELL DESIGN AND CONSTRUCTION RELATED TO GROUNDWATER RESOURCES EXPLOITATION
AQUIFER TESTS
WATER SUPPLY WELLS MAINTENANCE AND REHABILITATION
INSPECTION OF DRILLED WELLS, DRAINAGE AND SEWAGE SYSTEMS
WATER TREATMENT UNIT PRODUCTION
EXPERT WITNESS FOR HYDROGEOLOGY AND WATER RESOURCES MANAGEMENT, WASTE TREATMENT DESIGNS
Water quality assessments.
AND EVALUTION)
Water Resources
Global Water continues its dominance as the leading groundwater services company. Our full range of water related services include Hydrogeological investigation, geophysical investigation, geological mapping, resource identification, well field design and development, pump tests, pump services, water filtration and purification, pipeline installation, sewer rehabilitation, storage, aquifer maintenance, remediation and wastewater treatment and discharge.
Geotechnical Construction
To stabilize soils for construction, Global Water services include artificial ground freezing, chemical grouting, ompaction grouting, construction drilling, drilled micropiles, jet grouting, permeation grouting, post-tensioned rock and soil anchors, vibratory ground improvement and stone columns. Vibratory ground improvement and jet grouting are ideal for increasing the load bearing soil characteristics needed for civil construction projects. Artificial ground freezing is used for groundwater control and excavation support in water-bearing soils.
Environmental Drilling
We maintain drilling teams specially trained to work on hazardous waste sites and groundwater contamination projects. From initial site assessment to the implementation of remediation, services include: borehole geophysics; investigative drilling; well logging; monitoring wells; recovery wells; and maintenance of groundwater recovery systems. Our large equipment inventory supports most drilling methods, sampling techniques, well depths and diameters.
Safety
Safety is an integral part of Global Water’s management structure. A dedicated Safety and Environmental Health Sciences Division directs programs to keep all field personnel trained in current safety practices. All drilling crews are OSHA 40-hour Hazardous Waste trained with current 8-hour and supervisor updates, which include annual medical monitoring. In addition to the PRD training, crews are well trained. Forklift and crane certification is standard for all Global Water field employees.
Water Resources Division
Now, with expertise in every phase of water resource management, Global Water Company is uniquely qualified to provide design build services for a complete project or any combination of needs.
Source Identification
Our combination of experienced technical staff and resources allows Global Water Company to cost effectively identify the most practical water source for our clients’ needs, be it surface water or groundwater. Global Water’s scientific approach is designed to located a water supply that will best meet the customer’s needs in a cost-effective and efficient manner.
Develop & Maintain
Once an appropriate source is identified, a water system is constructed. This includes drilling, construction and development of a well or, in the case of surface water, constructing an appropriate intake system. Pumps and equipment are specified and installed. A properly designed and maintained water system provides optimal performance and reliability over the long run.
Purification
Global Water resolves water quality problems through custom-engineered filtration and treatment systems. Global Water’s chemists and engineers determine the appropriate treatment technology then construct a system scaled to each customer’s unique needs.
Wastewater Treatment
For the completion of the water resource cycle, Global Water designs and builds wastewater treatment plants. Global Water can help maintain or expand existing plants or construct new facilities. Plants are available in a variety of configurations and, utilizing the latest in treatment technology, serve the needs of large and small municipalities and industry.
Source
Hydrogeologic services to locate water resources
Whether groundwater or surface water,
Global Water Hydrogeologists
perform detailed feasibility studies to
determine the best source for a project.
Surface Water
Surface water sources are capable of
providing economical, abundant water
supplies that often exceed those of
several vertical wells, and with significantly
lower operating and land
acquisition costs. Using large, efficient
pumps, the site yield can be maximized
while reducing energy requirements.
Surface Water Intakes - Surface water
intakes offer distinct environmental
and economical advantages with low
Groundwater
Economical groundwater supplies are
becoming increasingly difficult to locate
and develop. Growing concerns
regarding groundwater quality degradation,
regulatory limitations and declining
production rates demand innovation to
achieve desirable results. The ability to
understand the issues at hand and select
a viable approach to locate and develop
a source in a timely and effective
manner is essential to success.
To reduce the risks and added costs
associated with random exploration
drilling, Global Water’s Hydrogeologists
use a systematic method for
finding appropriate groundwater
resources.
capital expenditures and lower
operational and maintenance costs.
Infiltration Galleries - Where surface
water intake systems are not feasible
due to quality or yield limitations,
infiltration galleries have proven most
effective.
Radial Collector Wells incorporate a
vertical shaft which in turn utilizes
horizontal screen laterals to collect
filtered groundwater. Typically installed
close to a dependable surface water
source, these wells take advantage of a
natural filtering process called
Riverbank Filtration. This helps reduce
chemical treatment costs and ensures
the owner of high quality water
production.
Develop
Design & construction of reliable well and pump systems
Water supply development requires the
integration of engineering and hydrogeologic
sciences with the art of well
drilling. This combination is the basis
for Global Water’s success in
producing long-lasting, efficient water
supply systems.
Working with proven design principles
and site information, we provide
clients with well specifications for each
project. These include details on every
aspect of the system, including test
hole drilling, pump selection, well
Water Systems Equipment
From specifying the correct pump to
water treatment and distribution
equipment, Global Water offers
clients complete services for equipment
sales, installation and maintenance.
Critical to any water supply system is a
reliable pump - carefully selected and
properly installed. Our personnel select
the most efficient pump for the job by
matching pump specifications to the
well design and aquifer characteristics.
Vertical turbines, submersibles, short coupled and horizontal centrifugal
pumps are available in virtually any
needed capacity, to meet a variety of
applications including:
• Municipal and industrial water wells
• Lake or river intakes
• Irrigation wells
• Booster service
• Fire well service
• Mine dewatering
screen gravel packing, grout sealing,
well development and pump testing. A
detailed and comprehensive specification
helps assure each client of a high
quality, cost effective water supply.
Successful completion of a project also
depends on selecting the proper
drilling method for the site and well
design. With over 1500 drilling and
service rigs located coast-to-coast,
Global Water has the flexibility to
assign rigs and support equipment as
required. Our drilling capabilities
include: air, mud and reverse circulation
rotary, auger and hollow stem
auger, dual and triple wall reverse
circulation, percussion hammer and
cable tool.
Global water’s professional approach to
design, construction and development
can be applied to a variety of well
types including, monitor,wells, high production water wells,
specially designed injection wells and
Global Water can also supply
clients with water treatment equipment
including chlorinators, aerators, filters
and controls. From well design to point
of distribution, we offers complete
systems on a turnkey basis. Each
component or system is installed by
trained and experienced personnel who
adhere to rigid quality standards.
The total systems approach results in an
integrated water supply system.
others.
Maintain
Programs that ensure continuous operation of vital systems
Services for the Life of the System
Skilled technicians, specialized tools
and equipment, and sophisticated
techniques are essential to the smooth
operation of a water supply system.
Let Global Water manage your
system so you can concentrate on your
operation.
Pump Repair & Maintenance
Our personnel provide expert repair
and trouble-shooting services on
vertical turbine pumps, submersibles,
horizontal centrifugal pumps and
others regardless of manufacturer. To
ensure reliable well performance, a
preventive maintenance program is
tailored to accommodate specific
pumping schedules. This program
typically includes:
• An initial and annual inspection
• Oil changes
• Repacking
• Pumping tests
• Immediate emergency service
Operations Management
Global Water can design monitoring systems that continuously monitor water system efficiencies. The results are recorded on dataloggers.
Technical personnel can evaluate and
apply this data to manage optimum
system efficiency.
All too often symptoms that indicate
well or pump problems are ignored
until they result in a breakdown or
serious reduction in performance.
Preventive maintenance helps pinpoint
trouble spots before they become
downtime or require major repairs.
We also provides expert
repair and maintenance on water
treatment equipment such as
chlorinators, aerators, pressure filters,
ion exchange systems and membrane
filtration systems. Media replacement
services are also available to restore or
enhance the performance of existing
filters.
Well Maintenance
A water system is dynamic. After a well has been in operation for a while, its capacity may decline or water quality may change. Chemical treatment of water wells is a process of treating wells, well screens, gravel walls and adjacent water bearing formations to rid them of silt, mud, mineral scale and microscopic organisms which reduce the output of water and decrease the efficiency of the well.
In restoring a well to its calculated
output, Layne engineers first carefully
analyze the well's history and possible
sources of the lost capacity, then select
the most appropriate method of
treatment, apparatus and chemicals to
be used. Each rehabilitative program is
individually suited to the unique
situation of the well involved.
• Pre-scheduling of routine work
• Service for many non-PRD pumps
and wells
• Detailed maintenance records
Keeping pumps in full operation helps
ensure efficient well production. When
possible, our crews will minimize a
client’s downtime by repairing a pump
on-site. Or, if necessary, repairs will be
made at a Global Water machine
shop, which provides repair of all
makes of pumps and gear drives.
Purify
State-of-the-art filtration and purification systems
Global Water’s Water Treatment
Division has been developing practical
approaches to system designs for
potable water, contaminated groundwater,
industrial process and
wastewater treatment. Global Water
has designed, manufactured and installed
thousands of treatment units for clients
throughout the Sri Lanka.
Our ability to perform key processes
in-house, combined with practical
experience in construction and start-up
of treatment facilities, provides a high
degree of control over project cost,
quality and schedule. With our range
of experience in all areas of water
treatment, Our engineers, fabricators,
and field service technicians can
recommend and implement appropriate,
cost effective solutions to all water
quality issues.
As a total system provider, Global Water
can construct complete
water and wastewater treatment
facilities to meet your requirements,
including the installation of all
equipment. With experience in both
on-site industrial process water and
municipal biological treatment plants,
we can modify existing facilities or
construct an entirely new plant.
Process Design
Layne is experienced in treating a wide
variety of inorganic and organic
contaminants including:
• Iron • Color
• Hardness • Turbidity
• Taste/Odor • Nitrate
• Manganese • Sulfates
• Radium
• VOCs • Suspended Solids
Wastewater Treatment
Environmentally compliant plants for virtually any size or treatment requirement
Tighter restrictions on wastewater
discharge and the growing demand for
clean potable water have placed a
greater emphasis on water treatment
methods and plant capacities.
Global Water constructs new
facilities and also makes improvements
to existing plants. This includes water
and wastewater treatment plants, in
addition to pump stations, lagoons and
holding basins.
Serving both private and public
sectors, our experienced workforce
takes on projects large or small from
regional offices providing responsive,
long-term support even after the initial
work is completed.
For fast-track projects, our in-house
design team and construction staff
works together to get your project
underway as quickly as possible.
Whatever your wastewater treatment requirements, you can rely on Global Water Company’s experience and reputation to provide the optimal system for your needs.
Wastewater Treatment Technologies
Global Water Company provides
wastewater treatment and water reuse
systems for both municipal and
industrial wastewater applications.
Global Water has the know-how to provide
the right system for your treatment and
reuse needs, and can help identify the
most effective treatment technology,
whether it be conventional treatment,
sequencing batch reactors, or membrane
bioreactors. Global Water can provide
everything from full-scale in-ground
systems to skid-mounted, scalable
package treatment plants. Contact our
highly trained professionals for your
free site evaluation.
Completed projects in Sri Lanka
Kandy District
1. Project : Tube well at Pallekele
Client :Plantation Human Development Trust,
Kandy
Work done by GWS :Hydrogeological Investigation & Drilling of the tube well,Pump installation monitoring
2. Project : Tube well at Dodanwela
Client : St. Joseph Church Kandy
Work done by GWS: Hydrogeological Investigation, Drilling of the tube
well & test pumping
3. Project : Tube well at Kundasale
Client : RT Oil Stores, Kandy
Work done by GWS : Hydrogeological Investigation & Drilling of the
tube well
4. Project : Tube well at Heerassagala
Client : Mr. Jaythilaka
Work done by GWS : Hydrogeological Investigation & Drilling of
the tube well
5. Project : Tube well at Hedeniya
Client : Mr. Jagath Amarapathy
Work done by GWS : Hydrogeological Investigation & Drilling of
the tube well
6. Project : Tube well at Doluwa
Client : Mr. Tony Maclaughling
Work done by GWS : Hydrogeological Investigation & Driling of
the tube well
7. Project : Tube well at Kahatapitiya, Gampola
Client : Jumma Mosque Gampola
Work done by GWS : Hydrogeological Investigation & Driling of
the tube well
8. Project : Tube well at Hindu cultural center, Kandy
Client : Hindu cultural center
Work done by GWS : Hydrogeological Investigation & Driling of
the tube well
Matale District
1. Project : Tube well at Rattota
Client : Mr. Fedric Carlson
Hydrogeological Investigation & Drilling of the tube well
2. Project : Flushing of the tube well at Muwandeniya
Tamil School
Client : Plan Sri Lanka
Flushing of the tube well & Pump installation monitoring
3. Project : Tube well at Ulpathpitiya Mosque
Client : Ulpathpitiya Jumma Mosque
Hydrogeoogical Investigation & Drilling of the tube well
4. Project : Tube well at Ukuwela Arabic School
Client : Ukuwela Arabic School
Hydrogeological Investigation & drilling of the tube well
3. Project : Tube well at Ulpathpitiya Mosque
Client : Ulpathpitiya Jumma Mosque
Hydrogeoogical Investigation & Drilling of the tube well
4. Project : Tube well at Ukuwela Arabic School
Client : Ukuwela Arabic School
Hydrogeological Investigation & drilling of the tube well
5 .Project : Tube well at Kavudupelella
Client : Mr.Keerthi wijethunga, Water care
Enginering
Hydrogeological Investigation & drilling of the tube well
Kurunegala District
1. Project : Tube well at Kurunegala
Client : Mr. Somasiri , Freedom Holiday Resort
Hydrogeological Investigation, Drilling of the tube well &
Installation of the submersible pump
2.Project : Tube well at Kurunegala
Client : Mr. Roy R.S. Ravindra
Hydrogeological Investigation , Drilling of the tube well ,
Pumping test.
3.Project : Tube well at Mawathagama
Client : Mr. Moremada
Drilling of the tube well
Colombo District
1. Project : Tube well at St Joseph college
Client : St. Joseph College
Hydrogeological Investigation & Drilling of the tube well
2. Project : Flushing of the tube well at Piliyandala
Client : ETI homes (Pvt) Ltd
Flushing of the tube well
Puttlam District
Objective of the project work was to supply the water for coconut saplings .
1. Project : Drilling of a tube well at Vanathavillu
Client : Mr. Rohan Ratnayaka
Hydrogeological investigation , Drilling of the tube well, pumping test
2. Project : Drilling of a tube well at Otley estate - Eranavillu ,
Vanathavilu
Client : Mr. Kumaran
Hydrogeological Investigation, Drilling of the tube well and Monitoring
of pump installation.
3. Project : Drilling of a tube well at Karaitivu , Vanathavilu
Client : Mr. Kumaran
Hydrogeological Investigation, Drilling of the tube well
4. Project : Drilling of a tube well at Puliyankulam , Vanathavilu
Client : Mr. Kumaran
Hydrogeological Investigation, Drilling of the tube well
5. Project : Drilling of a tube well at Alavillu , Vanathavilu
Client : Mr. Kumaran
Hydrogeological Investigation, Drilling of the tube well
Badulla District
1. Project : Drilling of four tube wells at Haputale
Client : Roehampton Estate
Hydrogeological Investigation, Drilling of the Tube Wells
2. Project : Drilling of a tube well at Bandarawela
Rest house
Client : Mr. Bandularatna
Hydrogeological Investigation, Drilling of the tube Well
and installation of submersible pump
Vehicles
Model Vehicle No
TATA 713E LA-6284
TATA 713E LA-6292
Drilling Equipments & Accessories
Details of master rig and other related parts.
PRD 450 - Portable
DEPTH
6” over burden diameter & 4'/2" dia bore holes to a depth of 250ft.) using 3" drill rod.
PRIMEMOVER
Deck engine of 15bhp for hydraulic / air from compressor for pneumatic.
WORK METHOD
Rotation with direct circulation, nucleus destruction with bleeding by water,air or foam.
MAST
Channel structureMax. Capacity : 22000 lbs (10 tons)Height : 8 ft.(2.4 mtr)Rod handling :5ft.(1.5 mtr)Capacity
PULL UP SPEED
93 ft/min (28.2mtr / min)
PULL UP FORCE
9790lbs (4450kgs)
PULL DOWN FORCE
7345 lbs (3340 Kgs)
PULL DOWN SPEED
124 ft/min (37.7mtr/min)
REEVING RATIO
1:2
ROTARY HEAD
Max. torque :16650 in-lbs(190kg-mtrs.)Max. speed :0 to 25 rpm
OPTIONAL ATTACHMENT
The above portable model can be supplied with pneumatic winch and rotation motor to drill to a depth of 600ft using 3inch drill rod as an economy model.
ADDITIONAL FEATURES
The same mast can be mounted on small truck for easy approach of difficult site condition. This can also be altered to drill horizontal bores upto 300 feet.
SUITABLE COMPRESSOR
450 CFM / 150 PSI;450 CFM / 175 PSI;600 CFM / 200 PSI.
PRD 14 hammer
Bits of 41/2” to 6” diameter
Why Global Water Systems?
· Our vehicles with portable drilling unit could reach to the last edge of the site which other vehicles cannot reach.
· The Maneuverability of our vehicle enables us to attend to even the most difficult projects that the other similar companies are unable to attend.
No.05 Dalada Veediya,Kandy,
Sri lanka
Tel: 0812202846
Fax: 0812202850
Emai: carpark@pfik.org
