Corrosion mechanism of hydrogenated nitrile butadiene rubber O-ring under simulated wellbore conditions | Health & Environmental Research Online (HERO)

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HERO ID

4700272

Reference Type

Journal Article

Title

Corrosion mechanism of hydrogenated nitrile butadiene rubber O-ring under simulated wellbore conditions

Author(s)

Zeng, D; He, Q; Li, Tan; Hu, J; Shi, T; Zhang, Zhi; Yu, Z; Liu, R

Year

2016

Is Peer Reviewed?

Yes

Journal

Corrosion Science
ISSN: 0010-938X
EISSN: 1879-0496

Volume

107

Page Numbers

145-154

DOI

10.1016/j.corsci.2016.02.028

Web of Science Id

WOS:000374358900015

URL

http://www.sciencedirect.com/science/article/pii/S0010938X16300713
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Abstract

Corrosion testing of hydrogenated nitrile butadiene rubber (HNBR) O-ring was conducted at 140 degrees C, 35 MPa containing 0.5 MPa CO2 for 168 h in simulated wellbore conditions using self-designed-compression simulator and autoclave. The mechanical properties, EDS and fracture morphology analyses were performed. The corrosion under the compression state was more serious than that under the free state. Moreover, liquid corrosion was more serious under the free state. The decrease of mechanical properties can be attributed to the penetration of corrosive media and chemical actions, which changed the structure of rubber chains, weakened the reinforcement role of carbon black (CB). (C) 2016 Elsevier Ltd. All rights reserved.

Keywords

Rubber O-ring; Corrosion; Weilbore; CO2; Carbon black; Gas field