Abstract: In order to follow the trend of technological syncretization and promote the rapid and efficient development of petroleum engineering technologies, measures for cross-border syncretization innovation of petroleum engineering technologies in the past ten years were studied. It is believed that the cross-border syncretization innovation of petroleum engineering technologies mainly includes cross-border scientific research alliance and technological cooperation, venture capital, technological syncretization innovation, technological merger and acquisition, etc. The operating environment of oilfield service enterprises is increasingly transparent, and the operation mode is more flexible. The operation mode and procedure are constantly optimized, and the construction performance index is constantly improved. Furthermore, the scope of application is constantly expanded, and the connotation of oilfield service is increasingly enriched. According to the influence of cross-border syncretization innovation on petroleum engineering technologies, four development suggestions on cross-border syncretization innovation of petroleum engineering technologies were put forward, including improving the ability to scan external technologies, strengthening the external connection ability, creating a symbiotic innovation ecology, and focusing on the cultivation and aggregation of talents with T-shaped knowledge structures. The results and suggestions are of great significance to accelerate the development of cross-border syncretization of petroleum engineering technologies.