Hunan New Diamond Construction Machinery Co., Ltd.
|Place of Origin:||Hunan, China (Mainland)|
|Brand Name:||New Diamond|
|Model Number:||7 7/8" 412 200mm Tricone drill Bits|
|Minimum Order Quantity:||Negotiable|
|Packaging Details:||Carton packaging and wooden box packing|
|Delivery Time:||5-8 work days|
|Payment Terms:||L/C, T/T, Western Union|
|Supply Ability:||According to order quantity|
|IADC Code:||412||Circulation Type:||Jet Air|
|Pin Connection:||4 1/2” API||Metric Bit Diameter:||200mm|
|Product Weight:||34KG||Weight On Bit:||7,880-15,750Ibs|
three cone bit,
milled tooth drill bit
The main structural features
1,the use of high strength and toughness carbide teeth, improve the impact resistance of teeth to reduce the broken tooth rate;
2,Optimized design of the number of teeth, the number of teeth, tooth height and unique alloy tooth profile, give full play to the bit cutting ability and cutting speed;
3, the use of snap-lock locking cone, can withstand high-pressure drilling;
4, cone welding inlay reduction alloy, improve anti-bite bearing capacity;
5,the use of highly saturated nitrile rubber O-ring, the optimized seal compression to improve the reliability of bearing seals;
6, the use of all-rubber reservoir can limit the pressure differential and prevent the drilling fluid from entering the lubrication system, providing a good lubrication for the bearing system and ensuring the normal working of "O" ring seals and increasing the working life of the drill bit;
7,the use of new low-wear grease, drill seal lubrication system to improve the ability of high temperature.
|1.Tailored insert shapes and grades manufactured using state-of-the-art tungsten carbide technology for different formations having varied drillability and compressive strength,to provide an optimum match beteen inserts wear resistance and toughness.|
|2.By using computer simulation of the rock bteaking at the bottom of the hole,Shareat’s engineers are able to design the best inserts space to ensure the most balanced load on each insert.|
|3.Double rows of gage inserts For better maintaining full gage hole.|
|Based on the calculating of the load distribution on the bearing components,all shareate bits incorporate bearings that have optimal geometry and load distribution designed to give maximum bearing life.|
Bearing Type:Roller-Ball-Roller-Thrust Button without seal.
Bearing Type:O-Ring Seal-Roller-Ball-Roller-Thrust Button. See
·The seal keeps the mud,cuttings,air and water ouside the bearings.
·The bearing works in lubricant and friction conditions,this results in less bearing wear and longer bearing life.
|LUGAND SHIRTTAIL ENHANCEMENT|
1.Conventional Shirttail DesignThis shirttail features a”terraced”design,which increases escape area and the bailing velocity and decreases cuttings regrind and wear on shirttail and shirttail lip.
Hardmetal and wear resistant carbide were applied to shirttail and shirttail lip.
2.Particular Shirttail Design
This shirttail features a”terraced”design,which increases eacape area and the bailing velocity and decreases cuttings regrind and wear on shirttail and shirttail lop.
Hardmetal was applied to shirttail lip and lug.Wear resistant catbide on shirttail lip and lug and around the”terrace”lower part of shirttail lug.
·Please select the applicable formation and parameters according to the instructions.
·Carefully check the bits appearance and to check the bits threaded end face,whether the serial number on the box and certificate.
·Selection of WOB and RPM should be within the limits of the recommended parameters, higher WOB and RPM cannot be used simultaneously.
·Bottom hole must be clean and bit must not be used for long section reaming.
·Drilling process must operate smoothly, find that there is Bie jump on abnormal phenomenon, should be timely analysis and take effective measures
·The bit should be kept indoor with dry and well ventilated conditions at 10-33℃ and kept from sunshine and rain. Stored under such conditions, quality of bit is guaranteed for 3 years.
|Bit Diameter||IADC||Applications||Special Features(Cutting Structure,Lug Protection)||Weight||PIN Conn||Operating Suggestions WOB/RPM|
|7 7/8” 200mm||412||Very soft formations with low compressive strengths and high drillability.||Chisel on gage,conical on inner rows;Hardmetal on lug;Wear resistant carbide on shirttail lip and lug.||75||34||4 1/2” API||7,880-15,750Ibs/120-90RPM|
1.Price commitment: in order to ensure the high reliability of products, raw material selection are using grapefruit brand products; under the same competitive conditions, and not to reduce product technical performance on the basis of sincerity at a favorable price to customers.
2.Quality commitment: product manufacturing and testing have quality records and inspection data; the performance of the product can withstand customer inspection.
3.Customer service: in order to create new diamond brand, enhance the visibility of enterprises,establish corporate image, we serve customers with the principle of "preferential prices, good service, reliable product quality" principle.
The appearance of the picture is different from that of the actual product, and the actual product is the standard.
Contact Person: Rick.liao