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High Strength High Temperature Wet CO2 Service

JFE-UHP™-15CR-125

High demand for natural gas, deep water drilling and an increasing number of high pressure, high temperature (HPHT) wells has generated the need for a high strength OCTG material which can provide superior corrosion resistance at high temperatures. JFE-UHP™-15CR-125 is that material. A tempered Martensitic microstructure provides high strength at ambient and elevated temperatures with excellent corrosion resistance properties in both productive and none productive environments.

a. Specifications

(a) Process of Manufacture

Process : Seamless
Heat Treatment : Quenched and Tempered/Ausformed Tempered

(b) Chemical Composition

(wt %)

Grade C
max.
Si
max.
Mn
max.
P
max.
S
max.
Cr Ni Mo Cu
max.
JFE-UHP™-15CR-125 0.04 0.50 0.60 0.020 0.005 14.0~16.0 6.00~7.00 1.8~2.5 1.5

(c) Specified Physical Properties (at Ambient Temperature)

Grade
Yield Strength
min. max.
Tensile Strength
min.
Elongation
%
Hardness
max.
HRC
ksi
(MPa)
ksi
(MPa)
ksi
(MPa)
JFE-UHP™-15CR-125 125(862) 150(1034) 135(931) API Formula 37

b. Test Data

(1) CO2 Corrosion Test Results of UHP™-15CR-125

CO2 Corrosion Test Results of UHP-15CR-125

(2) SSC Test Results of UHP™-15CR-125

SSC Test Results of UHP-15CR-125
SSC Test Results of UHP-15CR-125

(3)Tensile test results of UHP™-15CR-125 at elevated temperature

SSC Test Results of UHP-15CR-125 at elevated temperature

*JFE-UHP™-15CR-125 provides better tensile properties at elevated temperature than Duplex stainless steel, which requires cold drawn.

(4) Corrosion test results in acidizing condition

Corrosion test results in acidizing condition

*JFE-UHP™-15CR-125 provides better corrosion resistance than Duplex stainless steel during acidizing operations.

Notes:

-The corrosion testing data in this brochure were obtained from laboratory testing results. Care should always be taken when selecting materials, as operating conditions may change during the period of usage.

-Regarding completion / packer fluid
Care should be taken in the selection of well fluids such as completion/packer fluids used in connection with this material in order to minimize the risk of stress corrosion cracking. JFE recommends that you consult with a person knowledgeable about fluid compatibility with this material in making a selection.
-Cr tubulars have shown a tendency toward localized pitting corrosion when stored in moist environments.
Special precautions during coating, shipping and storage are required.

-Anti-galling connection
Cr tubulars have been categorized as prone to thread galling, JFE Steel recommends to use FOX™ and JFEBEAR™ premium connection which overcomes this concem by its special design criteria.

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