12 1/4" 532 311mm Drilling stem tools Tricone drill Bits
Mining roller cone bit is the most widely used type of bit. Tricone
bit work alternately cutting tooth contact bottom hole, rock
breaking torque, cutting teeth and the bottom of the contact area
is small, high pressure, easy to eat into the ground, work The
total blade length, and thus reduce wear and tear. Tricone bit to
adapt to a variety of stratum from soft to hard. According to the
number of roller can be divided into a single roller cone bit, two
roller bit, tricone bit and four roller bit .
According to the cutting material can be divided into steel teeth
(milling teeth) and indented roller bit .Tobot drill bit as a
drilling rock tools have been widely used, significant improvement
in bit performance directly reduce drilling costs, especially
nearly ten Annual progress is the fastest.Life and ROP two
performance indicators, they ultimately determine the extent of the
impact of drilling costs Drill bit penetration rate and service
life is an effective way to reduce drilling costs, it is documented
that the improvement of the drilling rate The improvement of drill
life is more significant than the improvement of drill life, in
which the improvement of drill cutting structure is the most direct
way to increase the penetration rate of drill bit.For a long time,
the improvement of cutting structure has been mainly focused on the
main cutting tooth
For example, in the case of cemented carbide tooth structures,
wedge teeth, scalloped teeth, scalloped teeth, worn teeth, etc.
have been invented successively, and in the recent decade, it has
been gradually realized that the gage structure also has the effect
on a drill bit drill Speed and life expectancy have a greater
impact, especially in the application of high-gradient wells and
horizontal wells require a reasonable diameter gage structure, a
number of new gage structure has been developed and applied to the
roller cone bit achieved good results.
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
Hardmetal and wear resistant carbide were applied to shirttail and
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
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
Bottom hole must be clean and bit must not be used for long section
Drilling process must operate smoothly, find that there is Bie jump
on abnormal phenomenon, should be timely analysis and take
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|
|12 1/4” 311mm||532||Soft formations with low compressive strengths.||Coical on gage and inner rows;Hardmetal on lug;Wear resistant
carbide on shirttail lip and lug.||216||98||6 5/8”API||24,500-61,250Ibs/110-80RPM|
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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.
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quality records and inspection data; the performance of the product
can withstand customer inspection.
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