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1. WO2016134451 - THREAD PROFILES FOR ROTARY SHOULDERED CONNECTIONS

Publication Number WO/2016/134451
Publication Date 01.09.2016
International Application No. PCT/CA2016/000051
International Filing Date 26.02.2016
IPC
E21B 17/042 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
02Couplings; Joints
04between rod and bit, or between rod and rod
042threaded
E21B 17/02 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
02Couplings; Joints
F16B 33/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
33Features common to bolt and nut
02Shape of thread; Special thread-forms
CPC
E21B 17/042
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
17Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables;; Casings; Tubings
02Couplings; joints
04between rod ; or the like; and bit or between rod and rod ; or the like
042Threaded
F16B 33/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
33Features common to bolt and nut
02Shape of thread; Special thread-forms
Applicants
  • DRECO ENERGY SERVICES ULC [CA]/[CA]
Inventors
  • KALANTARI, Masoud
  • MARCHAND, Nicholas Ryan
Agents
  • TOMKINS, Donald V.
Priority Data
62/121,50827.02.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) THREAD PROFILES FOR ROTARY SHOULDERED CONNECTIONS
(FR) PROFILÉS DE FILETAGE POUR RACCORDS ROTATIFS À ÉPAULEMENT
Abstract
(EN)
A thread profile for rotary shouldered threaded connections uses different thread root radii for the pin thread and the box thread in order to optimize stress distribution and maximize thread contact area. The thread profile may be adapted for use in double- shouldered, two-start, taper-threaded connections to replace currently-used threaded connections such as the rotor-to-adapter connection in a downhole motor. The thread profile may incorporate an undercut buttress design.
(FR)
Cette invention concerne un profilé de filetage pour raccords filetés rotatifs à épaulement, mettant en œuvre des rayons de base de filet différents pour le filetage mâle et le filetage femelle afin d'optimiser la répartition des tensions et de maximiser la zone de contact de filetage. Selon un mode de réalisation, ledit profilé de filetage est conçu pour être utilisé dans des raccords à filetage conique à double épaulement et double pas pour remplacer les raccords filetés actuellement utilisés, par exemple pour la connexion rotor/adaptateur dans un moteur de fond de trou. Selon un mode de réalisation ledit profilé de filetage intègre un dessin trapézoïdal en contre-dépouille.
Also published as
Latest bibliographic data on file with the International Bureau