Title:
STRUCTURAL DESIGN AND VERIFICATION METHOD FOR METAL WITHHOLDING PIPE FITTING OF OIL FIELD PIPE
Document Type and Number:
WIPO Patent Application WO/2023/137969
Kind Code:
A1
Abstract:
Disclosed in the present invention is a structural design and verification method for a metal withholding pipe fitting of an oil field pipe. The method comprises the following steps: 1) determining key parameters of a pipe fitting, which parameters comprise a geometric parameter, a material parameter, and an operating condition parameter of the pipe fitting; 2) determining common failure modes of a metal withholding pipe fitting, which modes comprise a shear failure between an inner core and an outer sleeve, and an intercoat adhesion failure between inner teeth and a plastic layer; and 3) respectively proposing theoretical calculation and checking numerical models according to the failure modes in step 2) and the parameters of the pipe fitting in step 1) combined with a theoretical failure equation of mechanics. For two failure modes, i.e. a shear failure between an inner core and an outer sleeve and an intercoat adhesion failure between inner teeth and a plastic layer, theoretical calculation and checking numerical models are respectively proposed in the present invention, which are highly valuable for both the development of a new pipe fitting and the safety verification of an existing pipe fitting.
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Inventors:
CHU ZHANPENG (CN)
CHEN MINGHUA (CN)
HUO FULEI (CN)
CHEN JIANGHUI (CN)
JIN CHONGYANG (CN)
LIU YUEMING (CN)
CHEN MINGHUA (CN)
HUO FULEI (CN)
CHEN JIANGHUI (CN)
JIN CHONGYANG (CN)
LIU YUEMING (CN)
Application Number:
PCT/CN2022/100130
Publication Date:
July 27, 2023
Filing Date:
June 21, 2022
Export Citation:
Assignee:
LINHAI WEIXING NEW BUILDING MAT CO LTD (CN)
International Classes:
G06F30/17
Domestic Patent References:
| WO2017121112A1 | 2017-07-20 |
Foreign References:
| CN114491844A | 2022-05-13 | |||
| CN109781324A | 2019-05-21 | |||
| CN105468812A | 2016-04-06 |
Other References:
JUNLI GUO, ZHIBO DONG, XUESONG LIU, PING WANG, HONGYUAN FANG: "Design of Undermatching T Joints Based on the Thought of Equal Load Carrying Capacity", JIXIE GONEHENG XUEBAI - CHINESE JOURNAL OF MECHANICAL ENGINEERING, JIXIE GONGYE CHUBANCHE, BEIJING, CN, vol. 55, no. 6, 20 March 2019 (2019-03-20), CN , pages 1 - 10, XP093079715, ISSN: 0577-6686, DOI: 10.3901/JME.2019.06.001
Attorney, Agent or Firm:
HANGZHOU ZHEKE PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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