Drill bits are the most widely used in oil drilling and geological
drilling. Tricone bits have the effect of rocking, crushing and
shearing the formation rock during rotation. Therefore, the roller
cone bit can adapt to various soft, medium and hard formations.
Especially after the emergence of jet-type roller bits and
long-nozzle roller cone bits, the roller bit drilling speed is
greatly increased, which is a major revolution in the development
of roller cone bits. Tricone bit by tooth type can be divided into
milling teeth (steel teeth) roller bit, insert the tooth (carbide
roller gear set) roller bit; according to the number of roller can
be divided into single cone, double cone , Tricone and multi-roller
bit. The most widely used at home and abroad, the most common is
the tricone bit.
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.
|Bit Diameter||IADC||Applications||Special Features(Cutting Structure,Lug Protection)||Weight||PIN Conn||Operating Suggestions WOB/RPM|
|9 7/8” 251mm||635||Medium-hard and abrasive formations with high compressive
strengths.||Coical on gage and inner rows;Hardmetal on lug;Wear resistant
carbide on shirttail lip and lug.||143||65||6 5/8”API||29,630-59,250Ibs/100-60RPM|
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.