The Research On Injection-Production Capability Of The Gas Storage

In this thesis, I first made the related technical investigation about the gas storage. Through the investigation of the gas storage technology, people more and more widely apply the gas storage. They mainly used for seasonal peak shaving and emergency. Construction and production of the underground gas storage rely on the research of the gas storage injection-production capability.In this thesis, According to combining about geology, reservoir, capacity and fluid characteristics of the W96 gas storage, I study the gas storage injection-production capability of the single well. I research carrying fluid simulation model and washout simulation model. And I simulated the best tubing size in order to the injection-production capability.In this paper, I build node analysis model of the single well and draw inflow performance curve andoutflow performance curve. It is reasonable for the selection of the best tubing size and the wellhead injection-production pressure, and I provide the basis to determine the maximum injection-production capability through the gas well node analysis. I choose and establish the model ofthe gas storage by comparing the critical carrying fluid models. This ensures regularcarry fluid, not effusion. In order to make sure escape from washout, I research and choose the washout capacity model.Through the above analysis, we can see that the wellhead pressure, the formation pressure and tubing size effects injection-production capability factors. In certain wellhead pressure, with W96 formation pressure reduces, the production capacity also reduces. Along with the increase of formation pressure, gas injection capacity reduces. Tubing size increases, gas injection and production capability also increase. So the large size tubing can improve gas injection-production capability.I make sure the appropriate tubing size with production capability, carrying fluid, washout and wellbore conditions analysis;I simulate the largest peak capacity and emergencies capability. This will lay the foundation for the next step.