Method of testing ERW pipe weld seam for susceptibility to hydrogen embrittlement

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11235427
APP PUB NO 20210229221A1
SERIAL NO

16773485

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method of managing a tubular having a seam that exhibits signs of hydrogen induced cracking that extends radially along the seam, and which is different from classic step-wise cracking. Included in the method is evaluating the strength and ductility specimens taken from the tubular that have been hydrogen charged; and which provides an indication if the seam is susceptible to hydrogen embrittlement. The strength is evaluated by comparing tensile strength of the hydrogen charged specimen with that specified in an industry standard, such as API 5L. The ductility is evaluated based on comparing percent elongation of the hydrogen charged specimen with percent elongation of a specimen obtained from the tubular and not hydrogen charged. Tubulars with seams found susceptible to hydrogen embrittlement would not be put into sour service, whereas those found not susceptible to hydrogen embrittlement can be put in a sour service.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • SAUDI ARABIAN OIL COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Al-Anezi, Mohammed A Dhahran, SA 2 6
Al-Muaili, Saad M Dammam, SA 2 6
Ba, Bakri Khalid A Dhahran, SA 1 6

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Aug 1, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 1, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 1, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00