FEATURES OF OBTAINING SPECIAL OIL AND GAS DRILLING PIPES-Reference-Cited by-同舟云学术

FEATURES OF OBTAINING SPECIAL OIL AND GAS DRILLING PIPES

Published:2022-04-13 Issue:3 Volume:78 Page:257-263
ISSN:2619-0753
Container-title:Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information
language:
Short-container-title:Černaâ metallurgiâ. Bûlletenʹ naučno-tehničeskoj informacii

Author:

MAMEDOV А. T.¹,ISMAILOV N. SH.¹,GUSEINOV M. CH.¹,GULIEV F. T.²,SHAKHOV S. I.³,SIVAK B. A.⁴

Affiliation:

1. Azerbaijan Technical University, Azerbaijan, Baku

2. Baku Steel Company, Azerbaijan, Baku

3. Federal State Unitary Enterprise Central Research Institute of Ferrous Metallurgy named after I.P. Bardin, Russia, Moscow; MISIS Scientific and Technical University, Russia, Moscow

4. B. A. SIVAK

Abstract

Steels for drill pipes used in the oil and gas industry are subject to high requirements regarding alloying along with special metallurgical treatment. The technologies used at Baku Steel Company to ensure the required level of quality of pipes were examined. Data on chemical composition of billets from 21 melts of manganese containing steel 32Г2 in 60-t electric arc furnace and strength indexes of pipes with 114×7,4 mm section produced from the melts are presented in this study. The analysis of data has confirmed the possibility of producing pipes of proper quality at specified heat treatment regimes. However, in a number of cases the cracks and some other defects appeared during pipe rolling. Additional research has been carried out to eliminate them. It was recommended to use scrap with reduced impurities during charging electiric arc furnace and the proportion of pig iron should be increased. When steel is processed in a ladle-furnace, the timely supply of aluminium and other components must be provided. To ensure high chemical purity of steel and maximum removal of non-metallic impurities, to obtain a denser structure of the cast billet, it is recommended to apply special methods of exposure in the mould and carefully control the parameters of continuous casting. The recommendations were formulated for continuous casting regimes, including casting speed and cooling intensity.

Publisher

South Ural State University

Subject

General Medicine

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