An Efficient and Robust Method to Predict Multifractured Horizontal Well Production in Shale Oil and Gas Reservoirs

Table 1

The comparison of the primary decline model.

Name	Equation	States range of application
Hyperbolic decline model		Decline index ; it is suitable for the production forecast of transient flow period.
Modified hyperbolic decline model		The front part is suitable for the transient flow, and the latter half is suitable for the boundary-dominated flow. The risk is to determine the segment point.
Duong model		It is suitable for the production forecast of linear flow period, and it will overestimate in the boundary-dominated flow period.
Stretched exponential model		It is suitable for the production forecast of boundary-dominated flow period, and it will underestimate the production.