A New Model of Fractured Horizontal Well Coupling With the Tight Gas Reservoir at Unsteady State

2012 ◽  
Vol 30 (24) ◽  
pp. 2604-2612 ◽  
Author(s):  
M. Y. Xu ◽  
X. W. Liao ◽  
Y. F. He
Keyword(s):  
Horizontal Well ◽  
Tight Gas ◽  
Unsteady State ◽  
Gas Reservoir ◽  
New Model ◽  
Fractured Horizontal Well ◽  
Tight Gas Reservoir

scholarly journals A coupling flow model for fractured horizontal well and anisotropic tight gas reservoir

2021 ◽  
Vol 11 (4) ◽  
pp. 1873-1883
Author(s):  
P. Q. Lian ◽  
C. Y. Ma ◽  
T. Z. Duan ◽  
H. W. Zhao
Keyword(s):  
Steady State ◽  
Flow Rate ◽  
Horizontal Well ◽  
Flow Model ◽  
Horizontal Wells ◽  
Tight Gas ◽  
Unsteady State ◽  
Gas Reservoir ◽  
Fractured Horizontal Well ◽  
Tight Gas Reservoir

AbstractThe development of multistage fracturing technology in horizontal wells is a great impulsion to the successful development of unconventional resources. The hydraulic fractures distribute regularly along the horizontal wellbore, forming a seepage channel for fluids in tight gas reservoir and greatly improving the productivity of horizontal wells. Based on Green function and Neumann product principle, we establish a flow model of fractured horizontal well coupled with anisotropic tight gas reservoir under both unsteady state and pseudo-steady state and propose a method to solve this model. The calculation results show that flow rate of horizontal well under the early unsteady state is larger than that under the pseudo-steady state. There is no interference among fractures in the early unsteady state, and flow rate is in direct proportion to fracture numbers. Affected by frictional and acceleration pressure drop, flow rate of the end fractures is obviously larger than other fractures in pseudo-steady state. The permeabilities in different directions have great influence on well flow rate distribution. With the increasing Kx, the interference between the fractures is reduced, and the flow distribution is more balanced. When Ky becomes larger, the interference between fractures are stronger, and the “U” shape distribution of the wellbore flow is more significant.

A New Method to Determine and Forecast Deliverability Equation for Fractured Horizontal Well in Tight Gas Reservoir

2015 ◽  
Author(s):  
Xiangji Dou ◽  
Xinwei Liao ◽  
Huawei Zhao ◽  
Tianyi Zhao ◽  
Zhiming Chen ◽  
...  
Keyword(s):  
Horizontal Well ◽  
New Method ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Fractured Horizontal Well ◽  
Tight Gas Reservoir

Influence of Fracture Parameters on the Productivity of Fractured Horizontal Well Based on Fluid Mechanics in Tight Gas Reservoir

2014 ◽  
Vol 886 ◽  
pp. 452-455
Author(s):  
Hai Yong Zhang ◽  
Shun Li He ◽  
Guo Hua Luan ◽  
Qiao Lu ◽  
Shao Yuan Mo ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Tight Gas ◽  
Multiple Fractures ◽  
Gas Reservoir ◽  
Well Productivity ◽  
Fracture Length ◽  
Fracture Parameters ◽  
Fractured Horizontal Well ◽  
Tight Gas Reservoir ◽  
Wellbore Pressure

Multiple fractures are needed by hydraulic fracturing in order to improve the horizontal well productivity of a single well in tight gas reservoir. The calculation accuracy of productivity influences on the fracturing optimization results and the success ratio and effectiveness of fracturing treatment. This work focuses on analyzing the influence of fracture parameters on fractured horizontal well productivity in tight gas reservoir through establishing a productivity prediction model of fractured horizontal well, considering the interference between fracture and fracture and the wellbore pressure drop. Results show that the fracture parameters, such as fracture number, fracture interval, fracture conductivity and fracture length, have different influences on the productivity of fractured horizontal well and thus, the effects of fracture parameters should be taken into account when designing the fracturing treatment.

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