Testing Investigation of Protective Coatings for Downhole Oil Tube

Liping Zhang; Qibin Zhang; Yanjun Zhang; Beibei Xie; Yingying Ahang

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자료유형: 학술저널

저자정보: Liping Zhang Qibin Zhang Yanjun Zhang Beibei Xie Yingying Ahang

저널정보: 한국부식방식학회 Corrosion Science and Technology Corrosion Science and Technology 제7권 제1호

발행연도: 2008.1

수록면: 13 - 15 (3page)

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Aiming at the corrosion circumstances and corrosion prevention needs of downhole oil tubes, series protective coatings for downhole oil tubes have been developed in the authors’ laboratory, including a baked type coating YG-01 and an air curing type coating YG-03, etc. The performance investigation of the coatings has been done for testing their corrosion resistance, mainly including salt fog test, immersion test in oil-field waste water and various acid solutions, high temperature and high pressure test in alkali solution or H2S/CO2 environment, as well as some other performances. The investigation results show that oil tube anti-corrosion coatings developed here can endure over 4000 hrs salt fog test, over 1000 hrs immersion in various acid solutions at room temperature and in boiling oil-field waste water. In addition, the coatings can keep intact after experiencing test in alkali solution under 70 MPa pressure at 150℃ for 24 hrs, and in simulative sour gas environment under the total pressure of 32 MPa (PH₂S=3.2 MPa, PCO₂=3.2 MPa) at 90℃ for 168 hrs, which show that the coatings can be used for corrosion prevention in downhole environments with specific high temperature and high pressure, such as sour gas wells. The other testing results show the oil tube protective coatings have excellent comprehensive performance.

#oil tube #protective coating #anti-corrosion #performance

참고문헌 (3)

참고문헌 신청

/ / Standard SY/T 0544-2004, The Technical Specification for Solvent Internal Coatings of Oil Drilling Pipes (in Chinese), Petroleum Industry Press of China, (2005)

/ / Standard SY/T 5951-2004, The Technical Specification for Oil Tubes Coated with Epoxy Epoxy-Phenolic Resin Coating (in Chinese), Petroleum Industry Press of China, (2005)

Li Lianbao / 1998 / / Petroleum Engineering Construction (4) : 34 ~

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