A Calculation Method for Productivity of Gas Wells in High-Pressure Carbonate Gas Reservoirs with Water
A carbonate rock and productivity calculation technology, applied in calculation, earthwork drilling, wellbore/well components, etc.
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[0087] like figure 1 As shown, the present invention provides a method for calculating the productivity of a gas well in a high-pressure carbonate gas reservoir with water, which includes the following seven operation steps.
[0088] Step 1: Collect the production, completion and production data of the prepared gas wells, and establish a gas well productivity model for high-pressure carbonate gas reservoirs with water.
[0089] Collect basic data such as reservoir thickness, well radius, daily gas production, daily water production, formation pressure, bottom-hole flow pressure, gas density, and water density of gas wells, put forward the assumptions of productivity model, and establish a mathematical model of productivity of gas wells in high-pressure water-bearing gas reservoirs.
[0090] I. Model Assumptions
[0091] ① Reservoir with an infinite circular gas and water layer of the same horizontal mass and the same thickness, and a well in the center;
[0092] ②The gas and...
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