一种页岩气井油管尺寸选择方法
By predicting future gas production and bottom hole flow pressure, and combining the liquid holdup model to optimize tubing size, the problem of neglecting dynamic reduction in tubing size selection in existing technologies has been solved, thus achieving long-term stable production and maximizing economic benefits for shale gas wells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHWEST PETROLEUM UNIV
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for optimizing tubing size ignore the dynamic decrease in shale gas well productivity and formation pressure over time, failing to achieve optimal economic benefits and resulting in a shortened stable production period and loss of ultimate recovery rate.
By calculating and fitting the decline law of gas well production, predicting future gas production, back-calculating the bottom hole flow pressure, plotting the formation inflow dynamic curve, and combining the liquid holdup model of different tubing sizes, the tubing size that maximizes the cumulative gas production is selected.
This approach ensures stable production while maximizing long-term gas well productivity, extending the stable production period of gas wells, and improving recovery rate and economic benefits.
Smart Images
Figure CN122087997B_ABST