3 Inch Shank SRE531 RC Drill Bit Water Well Drilling , Bore Well Drill Bits

3 Inch Shank SRE531 RC Drill Bit Water Well Drilling , Bore Well Drill Bits

Product Introduce:

In reverse circulation, drilling fluid (usually water or very thin mud) flows down the annulus, up the drill pipe to the suction side of a pump, and into the tank or pit. Cuttings are lifted inside the drill pipe that has a smaller cross section than the annulus. Suction lift of the pumps limits this method to approximately 450 ft depth at sea level. The method that is preferred for geothermal wells utilizes an air pipe inside the drill pipe to provide the lift, and a cyclone or similar separator to separate air from the water and cuttings mixture. The air lift greatly increases depth capacity.Reverse circulation. The course of drilling fluid downward through the annulus and upward through the drill stem, in contrast to normal circulation in which the course is downward through the drill stem and upward through the annulus. Seldom used in open hole, but frequently used in workover operations.

Adavantages:

Woring Principle:

By using compressed air to extract rock fragments sample,the samples travel through rods to a sample splitter at surface, avoiding all contact between the samples and the borehole wall that allows samples to be retrieved with minimal contamination.

Specification:

SOLLROC RC BIT model RE531:

About us:

SOLLROC Reverse Circulation drilling (RC) ,from size 3’’ to 5.5’’, is a technique of drilling that uses dual wall drill rods that consist of an outer drill rod with an inner tube. By using compressed air to extract rock fragments sample,the samples travel through rods to a sample splitter at surface, avoiding all contact between the samples and the borehole wall that allows samples to be retrieved with minimal contamination,which is mainly used in deep hole exploration and mining grade control.

Delivery Way:

By Air, By express or By Sea

Package :

Ply-wooden cases + pallet