EP 0265341 A3 19891115 - INFLATABLE WELL PACKERS
Title (en)
INFLATABLE WELL PACKERS
Publication
Application
Priority
US 92262886 A 19861024
Abstract (en)
[origin: EP0265341A2] An inflatable well bore packer element (10), having inner and outer elastomer plies (23, 24) and an intermediate sheath of reinforcing wires (26,30) is secured at each end to a central mandrel (18) by inner and outer annular coupling members (32, 35). Wedge-shaped gripping members (42, 43) that hold the free ends of the reinforcing wires between facing surfaces of the coupling members are positioned and secured by independently tightened rings (46, 48). The inner elastomer ply (23) is bonded to the inside of the inner coupling member (32), and the tip of the inner coupling member is formed with a deformable skirt portion (34) that flexes during packer inflation to oppose extrusion of the inner ply into the reinforcing wire holding area between the facing surfaces. The tip (36) of the outer coupling member is rounded to protect the outer elastomer ply (24) from tearing.
IPC 1-7
IPC 8 full level
E21B 33/124 (2006.01); E21B 33/127 (2006.01)
CPC (source: EP)
E21B 33/1243 (2013.01); E21B 33/1277 (2013.01)
Citation (search report)
- [YP] FR 2582077 A2 19861121 - CAOUTCHOUC MANUF PLASTIQUE [FR]
- [Y] US 3542127 A 19701124 - MALONE BILLY C
- [A] US 4253676 A 19810303 - BAKER EUGENE E, et al
- [A] US 3529667 A 19700922 - MALONE BILLY C
- [A] US 3524503 A 19700818 - BAKER EUGENE E
- [AD] US 4406461 A 19830927 - MCGILL HOWARD L [US]
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0265341 A2 19880427; EP 0265341 A3 19891115; EP 0265341 B1 19940615; CA 1276547 C 19901120; DE 3750069 D1 19940721
DOCDB simple family (application)
EP 87402350 A 19871021; CA 550057 A 19871023; DE 3750069 T 19871021