The encapsulation of downhole components such as Hydraulic Control Lines, Single Line Encapsulation, Dual-Line Encapsulation (FLATPACK), Triple-Line Encapsulation (FLATPACK) has become prevalent in downhole applications. The overlaying of plastic provides several benefits that help to ensure a successful completion.
Encapsulation keeps from metal to metal contact.
Encapsulation can provide protection to underlying components while in hole such as a lines that can be across a sand face or possibly in contact with a high rate of gas.
Duplex 2507 is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance. Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.
Application
Desalination Equipment
Chemical process pressure vessels, piping and heat exchangers
Marine Applications
Flue Gas Scrubbing Equipment
Pulp & Paper Mill Equipment
Offshore Oil production/technology
Oil and gas industry equipment
| Austenitic: | 316L | ASTM A-269 |
| Duplex: | S31803/S32205 | ASTM A-789 |
| S32750 | ASTM A-789 | |
| Nickel alloy: | N08825 | ASTM B-704; ASTM B-423 |
| N06625 | ASTM B-704; ASTM B-444 | |
| CuNi alloy | Monel 400 | ASTM B-730; ASTM B-165 |
| Alloy |
O.D. |
W.T. |
Yield Strength |
Tensile Strength |
Elongation |
Hardness |
Working Pressure |
Burst Pressure |
Collapse Pressure |
|
inch |
inch |
MPa |
MPa |
% |
HV |
psi |
psi |
psi |
|
|
|
|
min. |
min. |
min. |
max. |
min. |
min. |
min. |
|
| Duplex 2507 |
0.250 |
0.035 |
550 |
800 |
15 |
325 |
13,783 |
33,903 |
13,783 |
| Duplex 2507 |
0.250 |
0.049 |
550 |
800 |
15 |
325 |
19,339 |
41,341 |
18,190 |
| Duplex 2507 |
0.250 |
0.065 |
550 |
800 |
15 |
325 |
25,646 |
52,265 |
22,450 |