INVESTIGATION OF OIL WELL TO GAS WELL PRODUCTION AND APPLICATION OF DOWNHOLE CHOKE

The original oil producing zones in some oil wells of Huabei oilfield is isolated and the gas zones are opened for production, however, the tubing and gas gathering pipe in the hole is blocked by hydrates produced in the well. Through some study on the hydrate plugging and analysis on hole data, it is determined to install a downhole choke instead of surface chocking, which efficiently solved the problem of hydrate blocking, at the same time, by fully using the formation energy, the surface construction investment and operation cost were also minimized.