International Standards Stable Hole Wall W And WT Series Casing Tube

International Standards Stable Hole Wall W And WT Series Casing Tube

Description:

Casing is a tube or pipe made of grade steel and is used to stabilize the upper section of a bore hole to prevent it from caving in and to prevent loss of drilling fluids

A casing shoe is found on the leading edge (the bottom) of a casing string to help advance it through the overburden layer and into the bedrock. Basically, its purpose is to make a hole for the casing which goes from the surface through the overburden to the bedrock. Because it is used to drill through overburden, the materials used in its composition are simpler and less expensive.

Casing shoes are often considered “disposable” because sometimes, once the driller reaches the bedrock with the casing, everything can be left there. This is a decision left up to the geologist or the mining company. As a result, a driller will want to choose an inexpensive casing shoe. On the other hand in really tough overburden, choosing a shoe with a high performance matrix is important in order to achieve a good penetration rate through boulders. You want to make sure it doesn’t wear out before it reaches the bedrock.

There are a few types of casing shoes, each for different conditions, and like most drilling equipment, choosing the right one is important.

W Series: AW, BW,NW,HW,PS ,SW

WT series: HWT,PWT

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