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1. (WO2018196622) HIGH-PERFORMANCE, CORROSION-RESISTANT AND ECONOMICAL COMPOSITE STEEL COILED TUBING AND MANUFACTURING METHOD THEREFOR

Pub. No.:    WO/2018/196622    International Application No.:    PCT/CN2018/082784
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 13 01:59:59 CEST 2018
IPC: F16L 9/02
F16L 9/04
F16L 58/08
C22C 38/18
C22C 38/50
B23K 33/00
B21C 37/15
Applicants: JASON ENERGY TECHNOLOGIES CO.,LTD.
杰森能源技术有限公司
Inventors: CAI, Xiaojing
蔡孝井
CHEN, Huashun
陈化顺
REN, Chengjun
任成军
LIN, Xu
林旭
YAN, Guang
闫光
Title: HIGH-PERFORMANCE, CORROSION-RESISTANT AND ECONOMICAL COMPOSITE STEEL COILED TUBING AND MANUFACTURING METHOD THEREFOR
Abstract:
A high-performance, corrosion-resistant and economical composite steel coiled tubing and a manufacturing method therefor, the composite steel coiled tubing comprising: a metallurgically bonded base layer (1) and composite layer (2); the base layer (1) is a carbon steel or low alloy steel layer; the composite layer (2) is a corrosion-resistant alloy, such as stainless steel or a titanium alloy, the composite layer (2) being disposed at an inner surface or outer surface of the base layer (1). The manufacturing method therefor comprises: the processing of the base layer (1) and the composite layer (2), using high-temperature rolling to achieve the tight bonding of metallurgical layers of the base layer (1) and the composite layer (2), and using straight seam welding to form the composite steel coiled tubing. The manufactured composite steel coiled tubing is strong, has good plastic toughness, is corrosion resistant and is economical.