Bits ‘n Pieces – The Driller’s Blog

New Pump Options for Geotechnical Drilling

Posted by Rod McCoremick on Mar 7, 2016 10:00:00 AM
Rod McCoremick


There’s a new pump in town, and it’s giving the old pumps a run for their money. In the world of geotechnical drilling, drillers have been using the same type of pumps for a long time. Drillers in this field now have a new pump to consider and it brings some excellent benefits to the table.


One of the products seen on the market over the years is the progressive cavity pump. The problem with this model of pump is that it cannot provide more than 225 psi in the best of conditions. For most contracts, this will be sufficient. However, in situations where more pressure is required, this pump may fall short.




The reality is that confirming bedrock happens on a regular basis, but for special deep coring contracts, different equipment is required. These deeper coring operations may require that geotechnical drillers diversify and expand the breadth of their drilling equipment in order to obtain better results while drilling through bedrock. Optimal coring parameters require higher rotation speeds and higher water pressure. Your usual pump may not build enough pressure to provide adequate flushing, and you may risk burning your bit or cause premature wear and tear to the matrix.

So why not just get a triplex pump that will provide the psi required for coring? Because they are often big, heavy and can be very expensive. They take up a lot of space and most drillers just think they will not have enough ore drilling to justify a larger, powerful pump. This is why the new Elepump mud pump is a great option. This new pump is small and so lightweight that it can be moved by two men.

This new mud pump handles bentonite and quick-setting cement and it is great in abrasive conditions.  It provides enough pressure to flush the bit properly and extend bit life but the best part is its durability. We’ve been testing the Elepump and our geotechnical customers have seen impressive results. After 10 months and 700 hours of use we opened it up and were pleasantly surprised - no parts had to be replaced and no maintenance had to be performed. This was while bentonite and quick-setting cement were being regularly used over the 10 months. We have had similar results in core drilling applications in tough, abrasive conditions.


For geotechnical drillers, this means a new mud pump that can pay for itself due to the reduction in maintenance and spare parts. Why would anyone not consider this new, durable mud pump?


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Topics: Geotechnical drilling, How to choose equipment

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