Research and Application of Pressure Operation Device Technology for Oilfield Water Injection Well

For low-permeability reservoirs, water injection is mainly used for development. With the extension of development time, water injection wells have become more and more frequent. Due to the low oil layer permeability, advanced water injection is generally used, resulting in high water injection pressures in some water injection wells and high oil layer pressure recovery speed Slow. For high-pressure water injection wells, the conventional method is to discharge the overflow and wait for the pressure to meet the construction conditions (below 0.5MPa) before performing the operation. This method has a long time to occupy the well, a large amount of emptying water, damage to the injection-production balance, waste of energy, Pollution to the environment and many other problems. Pressure operation device manufacturers introduced the technical principles of pressure operation of water injection wells, process research and optimization design of well string, research and development and testing of supporting key tools. At present, this technology has become water injection well operation The main technology of the company, and gradually promote the application on a large scale.