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
| W And WT Series Casing Parameter | |
| Standard | OD(mm) | ID(mm) | Wall Thickness (mm) | TPI | Male thread Length(mm) | Weight (kg/m) |
| AW | 57.1 | 48.4 | 4.35 | 4.0 | 57.2 | 5.66 |
| BW | 73 | 60.3 | 6.35 | 4.0 | 63.5 | 10.44 |
| NW | 88.9 | 76.2 | 6.35 | 4.0 | 69.9 | 12.93 |
| HW | 114.3 | 101.6 | 6.35 | 4.0 | 76.2 | 16.91 |
| HWT | 114.3 | 101.6 | 6.35 | 2.5 | 62.8 | 16.91 |
| PW | 139.7 | 127 | 6.35 | 3.0 | 82.6 | 20.88 |
| PWT | 139.7 | 125.5 | 7.1 | 2.5 | 62.8 | 23.22 |
| SW | 168.3 | 152.4 | 7.95 | 3.0 | 88.9 | 31.44 |
Rock sample:
Company Information:
Company Information
1. Our factory has been specialized in manufacturing drilling tools
and spare parts since 1980.
2. We have advanced technology and equipment.
3. Our technician has more than 25 year’s professional working
experience.
4. Rock drilling tools are exported throughout the world. Main
market: Norway, Turkey, USA,
Canada, Australia, Brazil, Uruguay, Iran, Philippines, Thailand,
India, etc.
