Tungsten alloy anti-corrosion wear-resistant casing and anti-corrosion liner
Classification:
Key words:
Hunan Nafel_Nafel_Tungsten Alloy Casing
1. Structure: ● Tungsten alloy layer is deposited on the inner and outer walls of API standard pipe. The liner tube is perforated on the casing substrate (called liner tube after perforation), and a tungsten alloy layer is deposited on the outer wall of the tube body. 2. Performance index: ● Mechanical performance: the pipe conforms to API standard ● Anticorrosion performance: H2S/CO2 high temperature corrosion resistance, salt water corrosion resistance, alkali corrosion resistance, weak acid corrosion resistance, meeting the corrosion resistance requirements NACE0177 the standard ● Wear resistance: better wear resistance, equivalent to hard chromium layer. ● Hardness of tungsten alloy layer: hardness ≥ 650HV ● Binding force between tungsten alloy layer and substrate: tested according to GB/T5270-2005, the coating will not crack or fall off ● Thread connection: the thread has good anti-sticking property ● Appearance: uniform and bright, silver white ● Thickness of tungsten alloy layer: ≥ 60μm 3, performance test ● Wear resistance and corrosion resistance test: it has passed various corrosion resistance and wear resistance tests of Xi'an Pipe Institute, Xi'an Moore Laboratory and Mechanical Industry Surface Coating Product Quality Supervision and Inspection Center. ● Gas sealing experiment: passed the gas sealing experiment of Xi'an Pipe Institute. Corrosion Detection Experiment of Yuanba Gas Field (Xi 'an Moore Petroleum Engineering Laboratory) The detection project is based on the standard detection mechanism corrosion rate corrosion morphology NACE RP-0775-2005 Xi 'an Moore Petroleum Engineering Laboratory conclusion under the simulated corrosion environment of Yuanba (H2S partial pressure is 5MPa,CO2 partial pressure is 11MPa, elemental sulfur content is 10g/L, chloride ion content is 80000mg/L, temperature is 160 ℃), the uniform corrosion rate of 1# and 2# samples is 0.0119mm/a and 0.0076mm/a, respectively. The uniform corrosion is mild corrosion, and there is no obvious local corrosion on the surface of the sample. Under the condition of simulated residual acid flowback corrosion environment (H2S partial pressure is 5MPa,CO2 partial pressure is 11MPa; The corrosion medium is residual acid prepared by Southwest Oil and Gas Field Engineering Institute, and the PH value is adjusted to 4.0. The temperature is 160 ℃), the uniform corrosion rate of the sample is 0.0069mm/a, the uniform corrosion is mild corrosion, and there is no obvious local corrosion on the sample surface.
Product Details
1. Structure:
● The inner and outer walls of API standard pipe are deposited with tungsten alloy layer. The liner tube is perforated on the casing substrate (called liner tube after perforation), and a tungsten alloy layer is deposited on the outer wall of the tube body.
2. Performance indicators:
● Mechanical properties:Pipes comply with API standards
● Corrosion resistance:H2S/CO2 high temperature corrosion resistance, salt water corrosion resistance, alkali corrosion resistance, weak acid corrosion resistance, meet the standard NACE 0177 corrosion resistance requirements
● Wear resistance:Better wear resistance, equivalent to hard chrome layer.
Hardness of tungsten alloy layer:Hardness ≥ 650HV
● Binding force between tungsten alloy layer and substrate:The test shall be carried out according to GB/T5270-2005, and the coating shall not crack or fall off.
● Threaded connections:Thread has good anti-galling
● Appearance:Uniform bright, silvery white
Tungsten alloy layer thickness:≥ 60μm
3. Performance testing
● Wear and corrosion resistance test:It has passed various corrosion resistance and wear resistance tests of Xi'an Pipe Institute, Xi'an Moore Laboratory and Mechanical Industry Surface Coating Product Quality Supervision and Inspection Center.
● Gas seal test:The gas sealing experiment of Xi'an Pipe Institute was passed.
Corrosion Testing Experiment of Yuanba Gas Field (Xi'an Moore Petroleum Engineering Laboratory)
Test Items | According to the standard | Testing institutions |
corrosion rate corrosion morphology | NACE RP-0775-2005 | Xi'an Moore Petroleum Engineering Laboratory |
Conclusion | Under the simulated corrosion environment of Yuanba (H2S partial pressure is 5MPa,CO2 partial pressure is 11MPa, elemental sulfur content is 10g/L, chloride ion content is 80000mg/L, temperature is 160 ℃), the uniform corrosion rate of 1# and 2# samples is 0.0119mm/a and 0.0076mm/a respectively, the uniform corrosion is mild corrosion, and there is no obvious local corrosion on the sample surface. Under the condition of simulated residual acid flowback corrosion environment (H2S partial pressure is 5MPa,CO2 partial pressure is 11MPa; The corrosion medium is residual acid prepared by Southwest Oil and Gas Field Engineering Institute, and the PH value is adjusted to 4.0. The temperature is 160 ℃), the uniform corrosion rate of the sample is 0.0069mm/a, the uniform corrosion is mild corrosion, and there is no obvious local corrosion on the sample surface. | |
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Hunan Nafel New Material Technology Co., Ltd.
Company office address: 27th floor, west tower, Hunan business council building, 569 furong middle road section 3, Yuhua district, Changsha city, Hunan province
Address: Changde Surface Treatment Industrial Park, Songlin Road, Changde Economic Development Zone, Hunan
Telephone:+860731-82712276
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