PDC drag bits water well drilling tools pdc drilling tools
non-coring pdc bits
1.balanced force design
2.reasonable layout of PDC cutters
PDC drag bit
Diamond Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades.They are usually designed for use in soft formations such as sand, clay, or some soft rock.Their uses include drilling water wells, mining, geothermal, environmental and exploration drilling.Whenever possible, they should be used to drill pilot holes, for they produce cuttings are easiest to log.Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples. Many special designs are available upon your request.
Other than PDC bits, drilling drag bits have the lowest cost per bit. Drilling drag bits are a rotary drill bit built with a steel body and tungsten carbide teeth.
These bits will out preform other more expensive bits if used appropriately. Drilling drag bits are extremely popular choice for seismic drilling, blast hole drilling and geothermal drilling applications. For best results adjust the rotational speed to 50% less than what you would normally use for a tricone bit of the same size and reduce the weight on bit by the same amount.
PDC drag bit
A diamond drag bit is simply a series of blades (usually three or four in number) which produce a shearing
action when rotated. They are comparatively inexpensive due to the lack of moving parts and theycan penetrate softer formations such as stiff clays and mudstones very quickly.The drag bit
usually used in very soft to medium formation when the dth hammer as the tricone bit, lose of
their effectiveness.The cleaning of the hole is realized by the injection of air or water.
There are two forms of drag bits:
- "Step" type for soft grounds
- "Chevron" type for medium hard grounds
Specification of PDC drag bit l
1) Drag bits are made according to API standard or no thread standard just welding.
2) Various step and chevron drag bits are available from 3 inch to 17 1/2 inch. (normal small size are 3",3 3/4",3 7/8",4 3/4",4 5/8",5 7/8",8 1/2" to 17 1/2"and so on).
3) There is very good feedback from our customers because of the quality and price.
4) Different drag bits can be made according to your drawings or samples.
|Size ||Type Pin ||Wt. (lbs.)|
|1 3/4'' ~ 2 1/2''||AW, A-Rod||2|
|2 5/8'' ~ 2 7/8''||AW, A-Rod||2 1/2|
|2 3/4'' ~ 3 1/4''||3THD/4THD N-ROD 2'' IF||4|
|3 3/8'' ~ 3 3/4''||3THD/4THD N-ROD 2'' IF||4 1/2|
|3 7/8'' ~4 3/4''||2 3/8'' API Pin||6|
|4 7/8'' ~ 5 1/8||2 3/8'' API Pin||7|
|5 1/4'' ~5 1/2''||2 3/8'' API Pin||8|
|4 5/8'' ~ 5''||2 7/8'' API Pin||10|
|5 1/8'' ~5 1/2''||2 7/8'' API Pin||11|
|5 5/8'' ~ 6 1/4''||3 1/2'' API Pin||18|
|6 1/2'' ~ 6 3/4''||3 1/2'' API Pin||19|
|7'' ~ 7 1/2''||3 1/2'' API Pin||21|
|7 5/8'' ~ 8''||3 1/2'' API Pin||23|
Ps: Special design is available upon your requirement.
PDC drag bit :
1.We will keep track of each customer to get the feedback of product quality and service. And we will make an amendment according to your feedback.
2.If the product size is wrong, we will send the right one freely.
3.We guarantee the high quality. Please feel free to contact us if you found any damage. We will solve the
4.We can provide product repair services.
The optimaler price, the best quality, the fastest speed, the best service.Your every piece of advice to us we will be very seriously treatment. If you have any suggestion to us, please surely tell us by mail in a timely
manner You are not just a visitor, but our partner in common progress.
Sincerely hope to cooperate with you.
1. How to order the products?
Send the inquiry with detail item description or with Model number.
If there is no packing demand we take it as sea-way packing.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. About lead time and shipping time?
The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.
According the distance from china to your port, usually from China to European about 25 days. To West of American 20 days.
3.Can I expect a quality products?
Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
Pls do not forget to add below information in your inquiry which will help us to give you the exact quotation at the first time:
1) the size of the tricone bit you need
2) the IADC code of the bit, like 537G
3) the drilling information of the layer
Welcome visit our page, any need pls feel free to contact me.
I'm Bonnie, always at your service!