Are you interested in learning more about Diamond Core Drill Bits China factory? Contact us today to secure an expert consultation!
Polycrystalline diamond drill bit (PDC drill bits) is widely used in petroleum exploration and exploitation, horizontal directional drilling, which greatly improves the construction efficiency as well as drilling speed, and also reduces drilling time and drilling cost.
The development of diamond drill bits in recent years has been particularly dramatic&#;various sizes and types of diamond drill bits as pilot bits used for horizontal directional drilling (HDD). HDD is a trenchless technology that connected with mud motors can achieve higher RPM than a tricone bit.
Directional well drilling is one of the effective technologies to improve the efficiency of petroleum exploration and development, and diamond drill bits play a more and more important role in directional well drilling with their own performance advantages. In order to improve the quality of drilling, it is necessary to improve the research on the drilling trend of diamond drill bits in directional well, and improve the efficiency of directional well drilling through the research on the influence of PDC bit drilling in directional well.
GREAT has experienced engineers who can design different types of diamond drill bits, if you would like to get more information, just feel free to contact us.
We all expect the diamond drill bits to have a long service life.
Here are the main factors :
1: The diamond drill bits are not like tricone bits, if the PDC cutters are pretty good, then they can work very long.
2: It is used for suitable drilling formation, so we always ask the customers how many blades they want, what the cutters' sizes are, if they are single row or double row, spiral blade or straight blade if they have any reference pictures so that we can design a diamond bit according to drilling formation. Drilling different formation also has different ROP, runs, footage.
3: Choosing reliable manufacture is the most important for a long working life diamond drill bit.
With the development of science and technology and the continuous innovation of technology, the drilling process has been continuously optimized. In recent years, our company has strengthened the close cooperation with drilling company, optimized the diamond bit according to the targeted design of different blocks and different formation lithology, continuously optimized the diamond drill bit selection, greatly improved the mechanical drilling rate and extended the service life of the diamond PDC bit.
BRIEF IN GREAT PDC BIT OPERATION MENU
a&#;Make sure the hole is clean and no any junk.
b&#;Run previous bit with junk basket if junking anticipated
a&#;Remove bit from packing box.
b&#;Stand bit on wood or rubber cushion - not on steel decking.
c&#;Record bit number.
d) Inspect bit for damage.
e)Screw up proper bit nozzles according to drilling engineer's design.
f&#;Check inside of bit clean and junk free.
a&#;Clean and grease the pin and box.
b&#;Fit bit breaker to bit and engage latch.
c&#;Fit bit breaker in rotary table.
d&#;Torque up with Recommended torques.
a&#;Approach casing shoe/obstructions cautiously.
b&#;Ream tight spots - see reaming.
c&#;Last joint - wash to bottom.
d&#;Tag bottom gently with full flow and low RPM.
e&#;Circulate for 5 minutes.
a&#;Reaming under - gauge holes are not Recommended - only tight spots.
b&#;Full flow.
c&#;Low WOB - 1/10 max. WOB.
d&#;Maintain a low ROP and high RPM
e&#;Avoid high torque.
a&#;Low WOB to drill first foot - cutting profile.
a&#;Full flow until Kelly up.
b&#; Making connection.
c&#;Record pressure on and off bottom.
d&#;Check pump strokes.
a&#;Find the optimum drilling parameter for each formation within recommended limit - by varying - WOB - RPM - flow.
Do not forget and set:
Soft formation- High ROP increases risk of plugging. Hard stringers- Reduce RPM to avoid overheating. Limit WOB - high WOB shortens bit life.
b&#;Survey - Regular survey recommended.
a&#;Blocked waterways - increase in pressure difference off and on bottom.
- Kick brake.
- Maintain full flow.
- Maintain rotation.
b&#;Blocked nozzles - increase in pressure drop off and on bottom.
- Circulate for 5 minutes.
- Raise Kelly, allow to fall rapidly - avoid surge.
- Do not drop bit on bottom.
We are a reliable manufacturer of PDC bits (Diamond drill bits ), tricone bits, hole openers/reamers since . Our brand is GREAT which looks like China GREAT WALL and wish to keep it longer and stronger.
Design:
GREAT has a professional team for R&D, production PDC Bits.
An experienced Team of Design Engineers and a deep understanding of elements ensures high-performance PDC Bit designs and manufacture.
Great can keep the secret and patent if our clients supply the drawings.
Manufacture:
Great bits are manufactured in API 7-1 & ISO manufacturing facility.
Blanks are hot forged & heat treated before machining.
The blank machining is done on the world's latest multi-axis CNC Machines from Mazak, Japan.
Quality test report:
Great Bits are seriously manufactured according to clients' clear target requirements.
All our bits are proved to be with satisfied quality test report from our international markets and domestic.
Strategy:
High quality with the best price is our advantage for long-term cooperation.
Great has gained a high reputation in China and international markets.
Service:
Great staff are with abundant export experience.
Considerate after-sales service.
If you are looking for a quality product, please first take several minutes to get more ideas about GREAT bits. You will find it is a very competitive product.
Drill Bits 101 - Top 3 Things to Know
When it comes to choosing the right drill bit for the job, there are three things to consider; material, coating, and the geometry of the tool. We&#;ll break it all down in a concise way to help clear things up to save you some time.
1. Materials
- What&#;s this thing made out of?The first thing to think about is the composition of the drilling bit. There are three popular composites and they all serve a different purpose.
The company is the world’s best diamond saw blade for stone cutting manufacturers supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
1a. High-Speed Steel - The Workhorse
High-Speed Steel (HSS) is the most popular drill bit material for several reasons. High-Speed Steel is readily available, and we have plenty of it right here in the United States. HSS is also extremely versatile. Manufacturers can configure an HSS drill bit for just about any application you can think of.
1b. M42 Cobalt or HSS with Cobalt Added
M42 Cobalt is high-speed steel with 8-10% Cobalt added in order to increase the hardness and endurance of the tool. You can pretty much expect the same characteristics as a standard HSS drill, but with increased performance across the board.
1c. Carbide - If Superman was a Drill Bit
Solid Carbide drill bits are the most expensive but they will outlast other drill bit materials by a longshot. A Carbide drill will outlast a Cobalt drill by at least twenty times, reducing the cost-per-hole significantly.
One characteristic of Carbide is that it&#;s brittle, so it won&#;t flex. This makes Carbide a bad choice for hand drilling. If you&#;re running a CNC or frequently use a drilling press, this material is worth the investment.
Carbide drills allow for a Through Spindle Coolant system or TSC as it&#;s known. In situations where you&#;re drilling deep into very hard materials, the feeding of coolant through the drill allows for better chip evacuation and self-cooling. This also helps to prevent wear, which is nice since TSC drill bits are pricey.
The most expensive in terms of up-front costs
Has the best drill-to-hole ratio
Can be run much faster (three to five times), decreasing the time needed to produce holes
Provides the best heat and chip resistance
Allows for
Through Spindle Coolantsystem or
TSCWill outlast M42 Cobalt by at least a factor of 10-20
2. Coatings
- The protective shield!Throw a good coating on any drill bit and you&#;ll completely change its characteristics. Coatings extend tool life and improve cutting performance. We&#;ve selected a few of the most popular coatings to keep things simple, so let&#;s jump in.
2a. Bright Finish
Bright Finish is a funny term because these drill bits are actually uncoated. Simply put, this keeps costs down.
Inexpensive
Great for drilling into low-carbon steel and aluminum.
2b. Black Oxide
Black Oxide finishes increase lubricity which helps to resist damage from heat and corrosion. Naturally, this also extends the life of the tool. These bits are best for use on ferrous metals.
Inexpensive
More lubricity
Resists oxidation
Heat treatment means 50% longer tool life, over Bright Finish
2c. Black & Gold
Black and Gold finish drill bits resist corrosion and breakage while increasing lubricity. These bits are not prone to chipping and flaking.
One of the most popular coatings for HSS Drills
An excellent coating for field techs wanting an excellent all-around drill bit
2d. TiN or Titanium Nitride
TiN extends the drill life and is an excellent entry-level coating for machining needs.
2e. AlTiN or Aluminum Titanium Nitride
AlTiN is a couple of steps up from TiN, with extended life and performance. An interesting charismatic is that these do not perform well on aluminum since aluminum is part of the coating.
Excellent for wet milling of titanium and high-temp material
Much higher heat tolerance compared to TiN and TiCN.
Good for use applications where chipping isn&#;t an issue
Not great for aluminum drilling
3. Geometry
Geometry is just as important as the material and coating when it comes to the performance and characteristics of a drill bit. Consider that every manufacturer has its own proprietary configurations so we&#;ll just focus on the general aspects.
3a. Webbing
Skinny drill bits snap more easily than thick drill bits. This is where spending a little more money for heavy-duty geometry is nice. That said, there is much more to drill design than the thickness and it&#;s not always a priority but it is a nice thing to be aware of.
3b. Length
A shorter drill bit is more rigid which is ideal so you should always use the shortest drill possible. That said, sometimes you have to use a longer drill bit. In these instances, you should at least use the shortest flute-length (cutting portion) possible. Using a drill with an unnecessary long flute length means that you&#;re choosing to use a less stable drill. This is not advised. The next question to ask is, &#;How much flute length do I need?&#; The rule of thumb for determining this is to take the diameter of the drill bit, double that, and then you&#;ll have the minimal flute length needed above the hole for proper chip evacuation.
Stubbies drills are great in CNC machines
Jobbers are good for use in drill presses and in hand-held drill guns.
There are many lengths for various applications
3c. Drill Point Angle
About flute length
There are actually a handful of drill point angles, but 118º and 135º are the two most common. A 118º drilling point is commonly put on lower-cost, general-purpose drill bits. It&#;s suitable for mild steel, aluminum, and other soft metals. On the other hand, 135º is for hardened steel and other tougher materials.
3d. Helix Angle (spiral angle)
A critical feature in twist drills, helix angles determine the process of chip formation. Large helix angles are good at removing soft, long-chipping materials. Small helix angles are good for the removal of hard, short-chipping materials. Note that there is some overlap in how helix angles are categorized.
10º to 29º3e. Self-Centering Split Point
This is an excellent and underappreciated feature in twist drills. A split-point drill bit prevents walking when starting a cut. Without a split-point, technicians would first need to drill pilot holes or use punches in order to start their cuts. This would, of course, take a lot more time and cut into your bottom line.
Prevents walking, especially on a curved surface
Split Points generate less heat and require less force
Most Cobalt and Carbide Drills feature Split Points
Not all HSS drill bits manufacturers feature self-centering split points since it&#;s more expensive to make these cuts. You get what you pay for
Most HSS drill bit manufacturers do not offer self-centering split-points on drill sizes under 1/16&#;
That Just About Covers It!
As we said earlier, every manufacturer has its own special sauce when it comes to drill bit design but the high-level points we covered here are universal. We hope that this condensed guide will serve as a foundation and help you understand what to consider when choosing the right drill bits for your upcoming jobs.
If you have any questions at all, please feel free to reach out to our team at (833) 4-ETOOLS. You can also us at .
Contact us to discuss your requirements of concrete diamond wire saw ropes. Our experienced sales team can help you identify the options that best suit your needs.