METHODS OF DRILLING

Rotary Percussion Drilling:

Drilled trough the weathered overburden into the solid underlying rock formation. The hole through the overburden will be reamed for casing to be installed to prevent any loose rocks or earth to fall into the hole. The hole can be drilled to final depth and cleaned out for pump testing.

Symmetrix/Odex Drilling:

In problem formations like: riverbed and highly fractured formations, it might be necessary to install the casing as the drilling continues as the formation keeps collapsing and it prevents the casing to be inserted normally. Once the problem area was cased off and the solid rock formation was penetrated, normal percussion drilling can continue to the required depth. The hole can then be cleaned and developed for pump testing and insertion of a pump.

Core Drilling:

Phuduhudu Drilling has the capacity to do drill core holes in unconsolidated formations.

Rotary Mud Drilling:

In sand and clay formations, the mud rotary method is used. It is a specialize method that allows us to drill trough the sands and the hole stays open for insertion of casing. A screen is placed apposite the targeted horizon to allow the water to flow into the hole. Between the screen and coarse sand, a filter pack is placed to prevent any fines to flow with the water into the hole

Fluid Reverse Circulation (FRC) & RC

The technique entails the removing of drilled material by roller or drag bits through the drilling rod and rotation head to either a cyclone or vibratory screen unit. The borehole is filled with water and replenished constantly from settling ponds to maintain that level. The water flow to bring the sample up in the rod is actuated and maintained by compressed air with an airline in the drilling rod. The speed of sample return is much slower than conventional RC and is thus not so destructive, where the requirement is to obtain as large as possible drill chip samples. This technique is use to extract bulk samples for kimberlite or to drill large diameter deep water production holes in formations like dolomite The company has extensive experience in FRC drilling in consolidated and unconsolidated formations.

Phuduhudu drilling company exceeded our expectations with their specialized drilling services.

Satisfied Client

★★★★★