Categories | Tricone Drill Bit |
---|---|
Brand Name: | ROSCHEN |
Model Number: | 6 5/8 |
Certification: | ISO |
Place of Origin: | CHINA |
MOQ: | 1 pcs |
Price: | Negotiate |
Supply Ability: | 10000 pcs |
Packaging Details: | Wood box |
Tricone Bit: | China 9 5/8′′ Kingdream Tricone Bit |
rock: | rock drill bit |
Drilling: | Tricone Bit: Drilling Equipment |
Drill Bit: | Tricone Bit Drill Bit |
Manufacturer: | TCI Tricone Bits Manufacturer |
drill: | tricone rock roller drill bit |
Type: | KBS Tricone Drill Bits |
well drilling: | tricone bit for well drilling |
sale: | tricone drill bits for sale |
Name: | tricone bits |
sizes: | China tricone bit sizes |
international: | rock bit international |
Company Info. |
ROSCHEN GROUP |
Verified Supplier |
View Contact Details |
Product List |
Tricone rock bit 6 5/8 inch for medium soft formation Minerals
Australian Drilling
Australian Drilling
Well drilling
soft formation, medium soft formation, hard formation, medium hard formation, very hard formation
Well drilling is the process of drilling a hole in the ground for the extraction of a natural resource such as ground water, brine, natural gas, or petroleum, for the injection of a fluid from surface to a subsurface reservoir or for subsurface formations evaluation or monitoring. Drilling for the exploration of the nature of the material underground (for instance in search of metallic ore) is best described as borehole drilling.
Vertical Drill Bit
The earliest wells were water wells, shallow pits dug by hand in
regions where the water table approached the surface, usually with
masonry or wooden walls lining the interior to prevent collapse.
Modern drilling techniques utilize long drill shafts, producing
holes much narrower and deeper than could be produced by digging.
Well drilling can be done either manually or mechanically and the
nature of required equipment varies from extremely simple and cheap
to very sophisticated.
Managed Pressure Drilling (MPD) is defined by the International Association of Drilling Contractors (IADC) as "an adaptive drilling process used to more precisely control the annular pressure profile throughout the wellbore." The objectives of MPD are "to ascertain the downhole pressure environment limits and to manage the annular hydraulic pressure profile accordingly."
The earliest record of well drilling dates from 347 AD in China.[1]
Petroleum was used in ancient China for "lighting, as a lubricant
for cart axles and the bearings of water-powered drop hammers, as a
source of carbon for inksticks, and as a medical remedy for sores
on humans and mange in animals."[2] In the modern era, the first
roller cone patent was for the rotary rock bit and was issued to
Howard Hughes Sr. in 1909. It consisted of two interlocking cones.
Walter Benona Sharp worked very closely with Hughes in developing
the rock bit. The success of this bit led to the founding of the
Sharp-Hughes Tool Company. In 1933 two Hughes engineers, one of
whom was Ralph Neuhaus, invented the tricone bit, which has three
cones. The Hughes patent for the tricone bit lasted until 1951,
after which other companies made similar bits. However, Hughes
still held 40% of the world's drill bit market in 2000. The
superior wear performance of PDC bits gradually eroded the
dominance of roller cone bits and early in this century PDC drill
bit revenues overtook those of roller cone bits. The technology of
both bit types has advanced significantly to provide improved
durability and rate of penetration of the rock. This has been
driven by the economics of the industry, and by the change from the
empirical approach of Hughes in the 1930s, to modern day domain
Finite Element codes for both the hydraulic and cutter placement
software.
Drill bits in mechanical drilling
Several factors affect drill bit selection. Due to the high number
of wells that have been drilled, information from an adjacent well
is most often used to make the appropriate selection. Two different
types of drill bits exist: fixed cutter and roller cone. A fixed
cutter bit is one where there are no moving parts, but drilling
occurs due to shearing, scraping or abrasion of the rock. Fixed
cutter bits can be either polycrystalline diamond compact (PDC) or
grit hotpressed inserts (GHI) or natural diamond. Roller cone bits
can be either tungsten carbide inserts (TCI) for harder formations
or milled tooth (MT) for softer rock. The manufacturing process and
composites used in each type of drill bit make them ideal for
specific drilling situations. Additional enhancements can be made
to any bit to increase the effectiveness for almost any drilling
situation.
A major factor in drill bit selection is the type of formation to
be drilled. The effectiveness of a drill bit varies by formation
type. There are three types of formations: soft, medium and hard. A
soft formation includes unconsolidated sands, clays, soft
limestones, red beds and shale. Medium formations include calcites,
dolomites, limestones, and hard shale. Hard formations include hard
shale, calcites, mudstones, cherty lime stones and hard and
abrasive formations.
Until 2006, market share was divided primarily among Hughes
Christensen, Security-DBS (now Halliburton Drill Bits and
Services), Smith Bits (a subsidiary of Schlumberger), and
REEDHycalog (acquired by NOV in 2008).
By 2014, Ulterra (now a subsidiary of ESCO Corp.) and Varel
International (now a subsidiary of Swedish engineering group
Sandvik) had together gained nearly 30% of the U.S. bit market and
eroded the historical dominance of the Smith, Halliburton, and
Baker Hughes.
TRICONE DRILL BITS - STANDARD CONNECTION SIZES * | |
SIZE | STANDARD PIN CONNECTION |
2 1/2" to 2 3/4" inclusive | A - AW Rod |
2 7/8" to 3 3/8" inclusive | N4 Rod |
3 1/2" to 4 1/2" inclusive | 2 3/8" API |
4 5/8" to 5" inclusive | 2 7/8" API |
5 1/8" to 7 3/8" inclusive | 3 1/2" API |
7 1/2" to 9 3/8" inclusive | 4 1/2" API |
9 1/2" to 14 3/8" inclusive | 6 5/8" API |
14 1/2" to 18 1/2" inclusive | 6 5/8" API or 7 5/8" API |
18 5/8" to 26" inclusive | 7 5/8" API or 8 5/8" API |
27" and larger | 8 5/8" API |
*Tricone bits are available with alternative connection sizes on request. |
For more information, please contact:
ROSCHEN GROUP LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschenmining.com ; http://www.roschendrilling.com
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