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1. WO2015012854 - RETRIEVAL OF COMPRESSED PACKERS FROM A WELLBORE

Publication Number WO/2015/012854
Publication Date 29.01.2015
International Application No. PCT/US2013/052190
International Filing Date 26.07.2013
IPC
E21B 33/12 2006.1
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
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
E21B 17/02 2006.1
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
CPC
E21B 23/00
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
23Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
E21B 33/128
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
128with a member expanded radially by axial pressure
E21B 33/129
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
129with mechanical slips for hooking into the casing
Applicants
  • HALLIBURTON ENERGY SERVICES, INC. [US]/[US]
Inventors
  • SECHERE, Karla
  • RICHARDS, William, M.
  • FROSELL, Thomas, J.
Agents
  • HILTON, Robert, C.
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) RETRIEVAL OF COMPRESSED PACKERS FROM A WELLBORE
(FR) RÉCUPÉRATION DE GARNITURES COMPRIMÉES À PARTIR D'UN PUITS DE FORAGE
Abstract
(EN) A packer assembly is located in a compacted wellbore and a method of relieving compression on the packer assembly are disclosed. An initial load path that exists when the packer assembly is in a set position is altered. The alteration of the load path relieves substantially all of the compression on the packer assembly. This causes a lower packer mandrel to move towards an upper packer mandrel. This upward movement shortens the distance between the upper packer mandrel and the lower packer mandrel, which removes the compressive forces on the packer assembly.
(FR) L'invention concerne un ensemble de garnitures qui est situé dans un puits de forage compacté et un procédé de soulagement de la compression sur l'ensemble de garnitures. Un chemin de charge initial, qui existe lorsque l'ensemble de garnitures est dans une position réglée, est altéré. L'altération du chemin de charge soulage substantiellement la totalité de la compression sur l'ensemble de garnitures. Ceci amène un mandrin de garniture inférieur à se déplacer vers un mandrin de garniture supérieur. Ce mouvement vers le haut raccourcit la distance entre le mandrin de garniture supérieur et le mandrin de garniture inférieure, ce qui élimine les forces de compression sur l'ensemble de garnitures.
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