New technologies such as the centrifugal winding method and improved GPI screw joints have expanded the application performance and research results of fiberglass reinforced plastic pipes over their long-term development. This study describes a strength design method for new oil well pipes, which are required for untapping deep oil wells as existing oil and gas fields become depleted. The durability of these pipes must exceed 30 years. Here, we quantified the withstanding pressure (100 MPa), depth (7000 m), heat resistance (250°C) and the pH of the corrosion resistance (pH = 2). We also propose a strength design method that specifies new OCTGs for a global standard; namely, the Global Oil & Gas Pipe Institute (GPI) standard.
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