1. Hydro-geological exploratory drilling

Hydro-geological exploratory drilling aims to study on hydro-geological conditions through the analysis of soil samples, well-loggings and pumping tests.

Exploratory drilling is carried out by auto-operating drilling rig such as YPБ-3AM-500, YPБ-2,5A... CWRPI is able to have exploratory core drilling up to the depth of 500m.

Drilling rig YPБ-3AM-500 on site

2. Exploitation drilling

Besides the conventional circulation drilling method, CWRPI now makes it mainly available with Dual-Wall Reserve Circulation technology. This method is more applicable for big drilling wells, extracting water from the unconsolidated sediments such as those in the Nam Bo Plain. This technology is widely applied in developed countries thank o its prominent advantages in comparison with the normal drilling technology, that is:   

- Able to drill huge wells 

- Little impact is found in target aquifers due to the little or no clay fluid is used during the drilling.    

- Drilled wells are straight, easy to install pumping machine.

- Increasing extraction capacity of the wells 

DRILLCON, 1БA-15B and YPБ-3AM-500 renovated drilling rigs are used in Dual-Wall Reserve Circulation (by the Division for Water Resources Planning and Investigation for the South of Vietnam). These drilling rigs allow us to drill up to the depth of 500m with the diameter of 800 mm.

diagram drilling technology THN

Drilling rig DRILLCON at Vietnam Brewery Factory

Inovated drilling rig THN at Bac Lieu Province

3. Geo-engineering foundation surveying drilling

Geo-engineering foundation surveying drilling is carried out by XY-100, XY-1A, YГБ-50M drilling rigs. The possible depth of drilling could be from 100 to 150 m. All the three Divisions of the Center are able to operate this kind of drilling on even river, lake and shallow sea as well as carry out on site tests with the Technical standard of ASTM, BS...

YГБ-50 Drilling rig in exploratory drilling for garbage bury in Ben Cat – Binh Duong

Geo-engineering surveying drilling on river

J-200 drilling rig checking concrete cores in Can Tho bridge