Research and application of downhole throttling technology in Yulin gas field

The technological process of the high-pressure gas gathering and concentrated alcohol injection is adopted in Yulin gas field, but some problems as bad fluid-carrying capability, hydrate plugging and high bearing pressure of pipeline, have been found in the process of production. So starting from principle of downhole throttling technology, in this paper we study the determination of the process parameters and analyze the application feasibility in Yulin gas field. Results indicate that downhole throttling technology is suitable for this gas field and can decrease the wellhead pressure.