Preparation method of long-chain polymer glue and application of long-chain polymer glue in oil and gas fields

The invention provides a preparation method of long-chain polymer glue, which specifically comprises the following steps: adding polyacrylic acid and catechol into deionized water, then adding a boric acid solution, regulating the pH value to 9.0 by using a NaOH solution under the protection of nitrogen, and mechanically stirring; meanwhile, the invention also provides an application of the long-chain polymer glue in oil and gas fields, and the application is to improve the threaded connection performance of oil pipes by using the long-chain polymer glue. The long-chain polymer glue provided by the invention is applied to oil and gas fields, the threaded connection performance of oil pipes can be improved, and the long-chain polymer glue and a coating technology are utilized, so that threads of petroleum pipes have relatively good corrosion resistance, sealing performance and thread gluing resistance.