Abstract
The throttle nozzle is an important manifold component for controlling flow and pressure in high-pressure natural gas wells. During fracturing fluid flowback and production process, the flow in the nozzle is a complex gas-liquid two-phase mixed flow. In this paper, the SST k-ω model coupled with the VOF model, Mixture model and Euler-Euler two-fluid model are selected to simulate the gas-liquid two-phase flow in the nozzle. The applicability of the three models is verified by the nozzle two-phase flow characteristics. The flow mechanism of natural gas or fluid flowing through the throttling nozzle is analyzed. The influence of nozzle geometry, nozzle front pressure and gasliquid ratio on the gas-liquid two-phase flow characteristics is investigated. The results of this paper provided guide to the design for nozzles of natural gas well and the optimization of the fracturing fluid flowback process.
| Translated title of the contribution | Numerical Research for Gas-liquid Two-phase Flow Properties of Nozzle in Gas Wells |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 2647-2652 |
| Number of pages | 6 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 43 |
| Issue number | 10 |
| State | Published - Oct 2022 |