Degree of wear.- Records the physical condition of the drill bit after its rotation period. Report the condition of the teeth (T), ***roller-cone bits*** (B) and gauge (G) of the drill bit

fuentes (en la primera es la imagen 4.2 "roller cone bits):

Información técnica del petróleo - ***Brocas4.2. Brocas Cónicas “Roller Cone Bits. Existen dos tipos de brocas cónicas disponibles: a) Brocas con dientes de acero “steel teeth”. b) Brocas con insertos*** ...
www.infopetroleo.com/index.php?...content... -

Oilfield Glossary: Term 'roller-cone bit' - Invented by Howard Hughes, ***the roller-cone bit has conical cutters or cones that have spiked teeth around them. As the drillstring is rotated, the bit cones*** ...
www.glossary.oilfield.slb.com/Display.cfm?...roller-cone bi... -

Roller cone bit - Wikipedia, the free encyclopedia - ***A roller-cone bit is a drill bit used for drilling through rock, for example when drilling for oil and gas***. The bits are sub divided into different ...
en.wikipedia.org/wiki/Roller_cone_bit -

Development of Roller-Cone Bits With Active PDC Shear-Cutting ... - DE Scott - 1996 -
A patented roller-cone bit that combines the conventional drilling mechanics of a roller-cone bit with the shearing action of polycrys- ...
www.onepetro.org/google/Papers/SPE/eJournal.../00025736.pdf...

The Effects of Asymmetric Nozzle Sizing on the Performance of ... - MR Wells - 1993 -
eral routines to optimize the hydraulics of roller cone bits have been extensively .... 7-8 for 2.1 and 4.2 HSI respectively. Included in these ...
www.onepetro.org/google/Papers/SPE/eLibrary.../00025738.pdf...

The Impact of a Novel TCI Bit on Oseberg's Horizontal Drilling Program - S Andresen - 1997 -
and cutting structure limitations of conventional roller cone bits used in earlier Oseberg wells, emphasizing the negative impact of excessive gauge wear ...
www.onepetro.org/google/Papers/SPE/eLibrary.../00037638.pdf...

HARDFACING COMPOSITIONS FOR EARTH BORING TOOLS - Patent application - ***Roller cone bits include one or more roller cones rotatably mounted to the bit body***. ... The carbide particles give the hardfacing material hardness and wear .... For example, a drill bit is also subjected to varying degrees of impact and .... may be comprised of from about 3.7 to about 4.2 weight percent carbon. ...
www.faqs.org/patents/app/20100038145 -

Roller cone drill bits-tooth : Buyer's Guide -CategoriesBentonite/fluid additives;Locators, walkover sonde/beacon systems;Reamers;Rock drill bits;***Roller cone drill bits-tooth***; ...
buyersguide.undergroundconstructionmagazine.com/.../roller-cone-drill-bits-tooth -

1 A proposal for the real-time measurement of drill bit tooth wear ... - GA Cooper -
Abstract. A method is proposed to estimate the ***degree of tooth wear of a drill bit*** by comparing its actual drilling performance, measured in real time, ...
www.maxsimul.com/Publications/GRCToothWear.pdf

Rotary Steerable Bit Gauge Design, Schlumberger - To optimize performance, LYNG Drilling offers rotary steerable gauge design for individual drill bits. Since drill bits used with the PowerDrive rotary ...
www.slb.com › ... › Drillbit Technology › PDC Drill Bits -

[PDF] IADC Dull Grading - : PDF/Adobe Acrobat - Quick view
When ring gauging a sharp (new) roller cone bit, a nominal ring gauge ... The “go” gauge is manufactured to the maximum roller cone bit tolerance ...
www.halliburton.com/public/sdbs/sdbs_contents/.../H03040.pd... -

***Photograph of roller-cone bit*** - Roller-cone bit. The roller-cone bit, from which one of the three cones has been removed, efficiently crushes rock as the cones roll on the bottom of the ...
www.glossary.oilfield.slb.com/DisplayImage.cfm?... -