Method and device for determining productivity of tight gas reservoir fracturing gas well
A determination method and technology for tight gas, which is applied in earth-moving drilling, wellbore/well components, and production fluids, etc., can solve the problems of inaccurate calculation results and the calculation method of fracturing gas well productivity is not considered, and achieve the effect of accurate productivity.
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[0035] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.
[0036] Embodiment of the method for determining the productivity of a fractured gas well in a tight gas reservoir according to the present invention
[0037]In the present invention, the reservoir of the fracturing gas well is divided into two parts, the fracturing and reconstruction area and the original reservoir area. For different parts, different productivity equations are established according to different reservoir properties and fluid seepage characteristics. In the fracturing and reconstruction area, consider The productivity equation is established based on the stress sensitivity of high-speed non-Darcy flow and fractured reservoirs. In the original reservoir area, the productivity equation is established according to the threshold pressure gradient, tight reservoir stress sensitivity and gas phase slippage effect; finall...
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