Abstract: To address issues such as wax deposition in oil wells and corrosion scale formation in oil and water wells during the development of offshore oil and gas fields,and in line with the demand for efficient well completion and production,an intelligent composite coiled pipe system suitable for offshore oil fields was developed by optimizing the commonly used composite coiled pipe in onshore oilfields,increasing the pipe diameter and tensile strength,and integrating quick connection technology. During the sea trial in well X1 of a certain oilfield in the Bohai Sea,the production pipe string was successfully run in hole and all functions performed normally. Research shows that the intelligent composite coiled pipe has superior anti-corrosion,anti-scaling,and anti-waxing performance compared to conventional metal pipe,significantly enhancing the efficiency of well completion and workover operations and improving economic benefits.

Key words: intelligent composite coiled pipe, offshore oil and gas fields, anti-corrosion, anti-scaling and anti-waxing