Steel for expandable casing for oil well and manufacturing method thereof
A technology for expanding casing and oil wells, which is used in manufacturing tools, temperature control, resistance welding equipment, etc., can solve the problems of affecting the sealing performance of expandable casing, easy to stick and low strength of threaded connection parts, and avoid easy cracking. , to avoid the effect of easy sticking, good anti sticking performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0017] The mass percent of steel alloy material for oil well expandable casing of the present invention: C: 0.15%, Mn: 1.65%, Si: 0.27%, Al: 0.03%, P: 0.008%, S: 0.003%, N: 0.007%, Ca : 0.003%, Nb: 0.06%, Ti: 0.03%, Mo: 0.26%, Re: 0.036, and the rest is Fe. Mn:Si: 6.1:1.
[0018] Manufacture of expandable casing for oil well:
[0019] Firstly, hot-rolled coils are prepared: the above-mentioned steel materials (components) for expandable casing for oil wells are smelted in an oxygen-blown converter, continuously cast into slabs with a thickness of about 250mm, heated to about 1200°C, and heated at a temperature of 1050-1100°C Rough rolling is carried out at the same time, and finish rolling is carried out at a temperature of 900°C. After rolling, water is sprayed for cooling, the cooling rate is 15-20°C / s, and the coiling temperature is 580°C to make a hot-rolled coil with a thickness of about 10mm.
[0020] Secondly, hot-rolled coils are used to produce straight seam resista...
Embodiment 2
[0025] Mass percentage of steel alloy material for oil well expandable casing: C: 0.09%, Mn: 1.74%, Si: 0.21%, Al: 0.04%, P: 0.007%, S: 0.004%, N: 0.007%, Ca: 0.002 %, Nb: 0.05%, Ti: 0.03%, Cr: 0.33%, Re: 0.045, and the rest Fe. Mn:Si is 8.28:1.
[0026] Manufacture of expandable casing for oil well:
[0027] First, prepare hot-rolled coils: the above-mentioned steel materials (components) for expandable oil well casings are smelted in an oxygen-blown converter, and then continuously cast into slabs with a thickness of about 250mm, heated to about 1200°C, and heated at a temperature of 1080~ Rough rolling is carried out at 1100°C, finish rolling is carried out at 780-950°C, water is sprayed for cooling after rolling, the cooling rate is 15-20°C / s, and the coiling temperature is 520-600°C to make a hot-rolled sheet with a thickness of about 12.7mm roll.
[0028] Secondly, hot-rolled coils are used to produce straight seam resistance welded steel pipes. The edge milling metho...
Embodiment 3
[0033] The mass percent of the steel alloy material for oil well expandable casing of the present invention: C: 0.12%, Mn: 1.61%, Si: 0.24%, Al: 0.04%, P: 0.009%, S: 0.004%, N: 0.007%, Ca : 0.004%, Nb: 0.07%, V: 0.05%, Ti: 0.04%, Ni: 0.24%, Cu: 0.17%, Re: 0.032, and the rest is Fe. Mn:Si is 6.7:1.
[0034] Manufacture of expandable casing for oil well:
[0035] First, hot-rolled coils are prepared: the above-mentioned steel materials (components) for expandable casing for oil wells are smelted in an oxygen-blown converter, continuously cast into slabs with a thickness of about 250mm, heated to about 1200°C, and heated at a temperature of 1000-1100°C Rough rolling is carried out when the temperature is 770-940 ° C, and water is sprayed for cooling after rolling. The cooling rate is 18-23 ° C / s, and the coiling temperature is 540-590 ° C. It is made into a hot-rolled sheet with a thickness of about 14.3mm. roll.
[0036] Secondly, hot-rolled coils are used to produce straight...
PUM
Property | Measurement | Unit |
---|---|---|
Thickness | aaaaa | aaaaa |
Yield strength | aaaaa | aaaaa |
Tensile strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com