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Varel International Ind L p
Varel International Ind L p_20131212

Varel International Ind L p patents


Recent patent applications related to Varel International Ind L p. Varel International Ind L p is listed as an Agent/Assignee. Note: Varel International Ind L p may have other listings under different names/spellings. We're not affiliated with Varel International Ind L p, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "V" | Varel International Ind L p-related inventors


 new patent  Bit for drilling with casing or liner string and manufacture thereof

A bit for drilling with a casing or liner string includes: a tubular stem made from a high strength metal or alloy; a head: having a cutting face with an inner cone, an outer shoulder, and an intermediate nose between the cone and the shoulder; attached to an end of... Varel International Ind L p

Thermomechanical testing of shear cutters

A method for testing thermal fatigue resistance of a shear cutter includes: engaging the shear cutter with a rotating target cylinder; moving the shear cutter along the rotating target cylinder until the shear cutter is heated to a threshold temperature; cooling the shear cutter in response to heating of the... Varel International Ind L p

Roller cone drill bit with improved erosion resistance

A method of manufacturing a roller cone for a drill bit includes: selectively carburizing a land of the roller cone between a plurality of spots on the land for protection against erosion; after carburization, forming sockets in the roller cone at the spots; and mounting cermet inserts in the sockets.... Varel International Ind L p

Hybrid roller cone and junk mill bit

A hybrid bit for use in a wellbore includes: a body having a shank for connection to a drilling motor or drill pipe and a plurality of legs attached to the shank; and a plurality of cutting structures. The cutting structures include a roller cone mounted to a first one... Varel International Ind L p

Modified surface properties of percussion tools used in downhole drilling

A system and method of fabricating a percussion tool that includes one or more surfaces modified using the ferritic nitrocarburization process. The percussion tool includes a piston positioned in sliding contact within a casing. The piston includes an inner wall and an outer wall, where the inner wall defines a... Varel International Ind L p

Apparatus to improve the performance of a leached cutter

A cleaned component having a polycrystalline structure, a method and apparatus for cleaning a leached component to form the cleaned component, and a method for determining the effectiveness of cleaning the leached component. The cleaned component includes a leached layer that has at least a portion of by-product materials removed.... Varel International Ind L p








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