Casing Bit & Casing Shoes Bit is used on the leading edge of a casing tube string to advance it through the overburden layer and into the bedrock by means of rotational drilling. Depending on the range of application, the cutting media on the core bit may take the form of synthetic diamond on the impregnated type, natural drill diamond on the surface-set type, or tungsten-carbide particles or elements.

Depending on the cutting media, Forsun makes four types of Casing & Casing shoe & Rod Shoe Bits:

  • Impregnated Diamond Casing & Casing shoe & Rod Shoe Bits
  • Surface set Casing & Casing shoe & Rod Shoe Bits
  • Tungsten Carbide Casing & Casing shoe & Rod Shoe Bits
  • Electroplated Diamond Casing & Casing shoe & Rod Shoe Bits

Casing Bits & Casing Shoes Bits

Impregnated Diamond Casing Shoe Bit is the most commonly used as it has the widest range of application and is generally the most efficient tool for advancing casing through overburden layers. IDP manufactures impregnated diamond casing shoe Bit that may be used with all sizes of standard casing tubes. The basic construction of these casing shoe Bit features a sintered powdered metal crown that is fused to a steel tool body or shank. 

Surface-set diamond casing shoe Bits are recommended for use when drilling relatively soft and abrasive formations such as sandstone or limestone. The diamonds are embedded in a powdered metal matrix body tool crown that is fused to a steel tool body. 

Tungsten-Carbide Casing Shoe Bit. This type of casing shoe Bit uses seismic grade tungsten carbide as the cutting media. Tungsten carbide does not possess the hardness of diamond and as such has a limited range of application as a drill tool cutting media. Tungsten-carbide casing shoe Bit are however a very cost effective means of drilling through softer unconsolidated formations. 

Standard Casing Shoes
Size Outside Inside Set Diameter
Set Diameter
  Inch Mm Inch Mm
RW* 1.475 /1.465 37.46 / 37.21 1.188 /1.183 30.18 /30.05
EW* 1.880 /1.870 47.75 / 47.50 1.497 /1.492 38.02 /37.90
AW* 2.350 /2.340 59.69 / 59.44 1.902 /1.897 48.31 /48.18
BW 2.970 /2.960 75.44 / 75.19 2.377 /2.367 60.38 /60.12
NW* 3.620 /3.610 91.95 / 91.70 2.997 /2.987 76.12 /75.87
HW* DCDMA 4.632 /4.617 117.65 /117.27 3.980 /3.970 101.09 /100.84
HWT 4.632 /4.617 117.65 /117.27 3.930 /3.920 99.82 / 99.57
PW** 5.660 /5.640 143.76 /143.26 4.865 /4.850 123.57 /123.19
SW* 6.800 /6.780 172.72 /172.21 5.948 /5.933 151.08 /150.70
UW* 7.815 /7.785 198.50 /197.74 6.916 /6.896 175.67 /175.16
ZW* 8.825 /8.795 224.15 /223.40 7.987 /7.967 202.87 /202.36
  • What is our competitive advantage? +

    Strict quality management, Low price, Good service ideas and Good professional knowledge. Based on the chinese continually developing large machinery industry and market.
  • How to make a good enquiry? +

    Please send more details as you can. For example, if you need the drill bits. Please let us know what size of drill bit do you need? what is the IADC of drill bit you need? what is the quantity you need? which kind of formation is the drill bit for?
  • Does a low price mean good value + bad quality? +

    Though almost each type of our products has different quality grades, they all are of reliable quality. You are invited to request for samples to check whether they can really suit your needs. As items in various quality grades have different prices and also the costs are not constant, it's
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Contact Info

If you would like to be a reseller of our products, please contact us.

Address: Ningxiang Economic Development Zone, Changsha, Hunan, China, 410618

Telephone: 86-769-89806066

Skype: yeboxcom 

Email:  Ms.Alice