1. Continuous Liquid Lifting Experiment for the Gas Well with High Gas-liquid Ratio
- Author
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N. Wei, Y. F. Meng, Y. Q. Li, X. Y. Chen, Y. J. Li, L. P. Wan, W. B. Liu, Jiachun Li, and Song Fu
- Subjects
Stress (mechanics) ,Rack ,Optics ,Physical model ,Field (physics) ,business.industry ,Chemistry ,Wellhead ,Compressed air ,Flow (psychology) ,Mechanics ,business ,Ellipsoid - Abstract
The feasible allocation of the gas well with high gas‐liquid ratio (GLR> 1 370) depends on the liquid lifting ability of well and reservoir condition. Nowadays, liquid carrying droplet physical model for gas well is represented by sphere and ellipsoid. Since the two models are different from the stress in the gas flow, the critical conditions calculated by two mathematic models derived from those physical models are different in 2.46 times. The visual experimental rack has a lucite tube with the height of 16 m and a diameter of 40 mm. Taking the compressed air and water as the experimental media, we simulated continuous liquid carrying under different gas well conditions, and captured that the actual droplet shape was ellipsoid in the stream by high‐speed video camera. In addition, we also tested the wellhead pressure, temperature, and gas production. The experiment result calculated by sphere model has 10% error and that by ellipsoid model has 58.3% error. This paper analyzes the ellipsoid stress state and experimental data, then derives a new ellipsoid mathematic model. We took 7 wells as examples and found that the calculated results were coincided with field production according to the new derived ellipsoid model.
- Published
- 2011