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1. WO2000040833 - DRILL PIPE PROTECTOR ASSEMBLY

Publication Number WO/2000/040833
Publication Date 13.07.2000
International Application No. PCT/US2000/000299
International Filing Date 06.01.2000
Chapter 2 Demand Filed 04.08.2000
IPC
E21B 17/10 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
10Wear protectors; Centralising devices
E21B 41/00 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
41Equipment or details not covered by groups E21B15/-E21B40/95
CPC
E21B 17/1007
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
10Wear protectors; Centralising devices, ; e.g. stabilisers
1007for the internal surface of a pipe, e.g. wear bushings for underwater well-heads
E21B 17/1064
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
10Wear protectors; Centralising devices, ; e.g. stabilisers
1057Centralising devices with rollers or with a relatively rotating sleeve
1064Pipes or rods with a relatively rotating sleeve
E21B 41/0078
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
41Equipment or details not covered by groups E21B15/00 - E21B40/00
0078Nozzles used in boreholes
Applicants
  • WESTERN WELL TOOL, INC. [US/US]; 9758 Whithorn Drive Houston, TX 77095, US (AllExceptUS)
  • MOORE, Norman, Bruce [US/US]; US (UsOnly)
  • FULLER, Andrew, Dale [US/US]; US (UsOnly)
Inventors
  • MOORE, Norman, Bruce; US
  • FULLER, Andrew, Dale; US
Agents
  • LAMPERT, Gregory, S.; Christie, Parker & Hale, LLP P.O. Box 7068 Pasadena, CA 91109-7068, US
Priority Data
60/114,87506.01.1999US
null29.12.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DRILL PIPE PROTECTOR ASSEMBLY
(FR) DISPOSITIF DE PROTECTION DE TIGE DE FORAGE
Abstract
(EN)
A drill pipe protector assembly for providing hydraulic lift and improved sliding lubrication to a drill string. The protector defines a tubular sleeve that is attached to a section of drill pipe and resides over the outer diameter of the drill pipe while moving within an associated well casing or well hole. The sleeve is adapted to provide hydraulic lift and sliding lubrication relative to the well casing and thus, increase the proclivity of the drill pipe to slide down the hole while also reducing the development of cutting dams. The sleeve includes a plurality of radially oriented openings which direct drilling mud from the annular space between the sleeve and drill pipe to the annular space between the sleeve and the casing or outer well wall. The sleeve also includes a plurality of wedge shaped longitudinal channels in communication with the radial openings. The channels direct the longitudinal flow of the drilling fluid along the outside of the sleeve to lubricate the outer surface of the sleeve and create hydraulic lift. The sleeve also includes a number of raised curvature surfaces having low coefficient of friction inserts located on the curved surfaces.
(FR)
La présente invention concerne un dispositif de protection de tige de forage servant à l'élevation hydraulique et à la lubrification de glissement d'un train de forage. Ledit dispositif de protection comprend un manchon tubulaire relié à une partie de la tige de forage et situé sur le diamètre extérieur de ladite tige lors de son mouvement à l'intérieur d'un revêtement de puits ou d'un trou de forage associé. Le manchon est conçu de manière à permettre l'élevation hydraulique et la lubrification de glissement du revêtement de puits, augmentant ainsi le mouvement de la tige de forage qui abaisse par glissement le trou de forage, tout en réduisant l'accumulation de débris. Le manchon comprend plusieurs ouvertures radiales qui orientent la boue excavée de l'espace annulaire situé entre le manchon et la tige de forage vers l'espace annulaire situé entre le manchon et le revêtement de puits ou la paroi extérieure du puits. Le manchon comprend également plusieurs canaux longitudinaux cunéiformes en contact avec les ouvertures radiales. Les canaux dirigent le flux longitudinal de fluide de forage le long de la partie extérieure du manchon pour lubrifier la surface extérieure de celui-ci et permettre l'élevation hydraulique. Le manchon possède en outre un certain nombre de surfaces courbées surélevées ayant des inserts à faible coefficient de frottement situés sur les surfaces courbées.
Also published as
GBGB0026753.4
NO20013346
Latest bibliographic data on file with the International Bureau