关键词: 青海油田, 连续管作业技术, 推广应用, 启示

Abstract: Qinghai Oilfield urgently needs the latest equipment and process technology to offset the harsh natural environment and poor social logistic conditions. With the help of the special platform provided by CNPC to extend new technology of coiled tubing, Qinghai Oilfield actively combined a series of advantages of coiled tubing – short service period, low accident rate, small formation damage and easy tripping-in – with its own actual conditions and conversed development pattern for continual technological innovation and application on a larger scale. The oilfield established a high-quality specialized technological service crew and developed a series of characteristic processes, such as low-pressure gas well coiled tubing nitrogen foam flushing service process, coiled tubing flushing well integrated service process and coiled tubing injecting well scale-removing process. With the annual service amount leading the nation for four consecutive years, the scale application has reached the advanced international standards, Qinghai Oilfield brought about conversion of plateau downhole service from low-end labor service to modern downhole operational technological service, achieving remarkable integrated economic performance and promoting oil and gas engineering technological development. Extension of coiled tubing service technology allowed Qinghai Oilfield to put high-end technological results into wide application, improve its independent creating ability and engineering technological service level, and make a satisfactory economic performance.