|Features:||High Penetration Rate, High Speed,High Performance||Product Name:||Diamond Drilling Tools|
|Working Layer:||6mm, 8mm,10mm,12mm||Use:||Exploration Drilling Casing Positioning|
|Siz:||BW , NW , HW , PW / NQ , HQ , PQ||Type:||Casing Shoe Bit|
Impregnated casing shoe bit,
Crown type casing shoe bit,
8mm drilling casing shoe
BW NW HW PW High Quality China Impregnated Diamond Casing Shoe Flat And W Crown Type Casing Shoe Bit
BW NW HW PW Diamond Casing Shoe
Casing and rod shoes are designed to position the rods or casing under overburden in drilling hole. The interior is smooth and large enough. Therefore, free passage of coring equipments such as bits, reaming shells, core barrels and drill rods is easily allowed. Under difficult drilling conditions such as unconsolidated overburdened or broken abrasive materials, these diamond tools are suitable to use.
Tungsten-Carbide casing shoe
Tungsten-Carbide casing shoe set with large tungsten-carbide elements that are physically embedded into the crown of the tool. Tungsten-carbide does not possess the hardness of diamond but it is very cost effective means of drilling through softer unconsolidated formations. The application of this type of casing shoe is primarily in geotechnical soil investigation or for advancing casing tubes through overburden layers that are composed mainly of clay, sand, gypsum or soft shale.
Impregnated diamond casing shoe
Impregnated diamond casing shoe 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. We have two crown types of impregnated diamond casing shoes available, flat and V-ring.
Surface set diamond casing shoe
Surface set diamond casing shoe differs from the impregnated type in that they are set with a single layer of natural drill diamond in a pre-determined pattern on the working surfaces of the tool. Surface-set diamond casing shoes are recommended for use when drilling relatively soft and abrasive formations such as sandstone or limestone.
|Description||Outside Diameter||Inside Diameter|
|Size||Outside Set Diameter||Inside Set Diameter|
|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*||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|
|PWT||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|
|Size||Unit weight (kg)|
Contact Person: Mr. yuan