Drilling methods employed are: -
• Rotary Mud Drilling
• Rotary Air Drilling - Down The Hole Hammer
• Overburden Drilling Eccentric (ODEX) Drilling
• Flooded Reverse Circulation Drilling (FRCD)
• Large Diameter Auger Drilling
All our drilling rigs are fully imported truck and track mounted solely custom-designed for groundwater exploration and capable of drilling the required diameter to depths exceeding 350 meters. They are equipped with air rotary capabilities for small or large diameter drill holes. Each rig is equipped with auxiliary high pressure air compressor and large volume mud pumps on board.
DRILCO is the first private drilling company in Malaysia to introduce the Flooded Reverse Circulation Drilling (FRCD) method for water well drilling in exploration as well as in production. We are still the first and only private company to own this type of drilling machine. Flooded Reverse Circulation Drilling method is employed in unconsolidated or alluvium formations, where the underlying geological settings of the site consist essentially of loose clayey-sandy-gravelly deposits commonly of extensive thickness generally found along the coasted plains or further inland along major river valleys. This method was proven to be the best and most successful method for drilling large diameter boreholes up to 900 mm (36”) in unconsolidated sand and gravel formations or alluvium.
This Flooded Reverse Circulation (FRCD) methodology of drilling was also employed successfully in many of our larger Alluvium Drilling Project in LRA Kelantan for Air Kelantan Sdn Bhd (AKSB), Jabatan Pengairan Dan Saliran Malaysia (JPS) and Jabatan Mineral Dan Geosains (JMG) with large diameter borehole of between 500 mm (20”) and 600 mm (24”) and installation of 300 mm (12”) and 400mm (16”) diameter well casings and screens respectively. With this milestone, we look forward to the drilling of much larger and deeper structures, especially in delivering on time and within the project specifications.
