Pressure Transient Modeling of Fractured Horizontal Wells in the Closed Tight Gas Reservoir

2012 ◽  
Vol 616-618 ◽  
pp. 749-752
Author(s):  
Meng Ya Xu ◽  
Xin Wei Liao ◽  
Xiao Liang Zhao
Keyword(s):  
Steady State ◽  
Horizontal Wells ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Gas Reservoir ◽  
Transient Model ◽  
Pressure Transient ◽  
Tight Gas Reservoir ◽  
Important Means ◽  
Fractured Horizontal Wells

Fractured horizontal well is the important means for the development of tight gas reservoirs. Based on the geologic characteristics of the tight gas reservoir, a pressure transient model for fractured horizontal wells is established by the Green functions and Newman product principle. The model considers the seepage resistances and the inferences from fractures each other. Practical application presents the pressure changes and flow rate distribution of fractures at non-steady state and quasi-steady state, and the suggestions for field operation are given as well.

Study and Apply of Seepage Law on Multi-Stage Fractured Horizontal Wells in Tight Gas Reservoirs

2014 ◽  
Vol 1030-1032 ◽  
pp. 1394-1398
Author(s):  
Ping Wang ◽  
Zhao Hui Xia ◽  
Wei Ding ◽  
Chao Bin Zhao ◽  
Yun Peng Hu ◽  
...  
Keyword(s):  
Scientific Evidence ◽  
Horizontal Wells ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Gas Reservoir ◽  
Tight Gas Reservoirs ◽  
Multi Stage ◽  
Tight Gas Reservoir ◽  
Commercial Value ◽  
Fractured Horizontal Wells

Because the extremely low permeability for tight gas reservoirs, lead to the way to seepage and the shape of production curves different with the convention reservoirs; this will increase the difficulty to develop the tight gas reservoirs; on the other hand, the convention exploit cannot recover the tight gas with commercial value, with this problem, the main solution is the technology of multi-stage fractured horizontal wells, the fractured can provide the channel for gas to transport, the horizontal wells can increase the seepage area of tight gas, it’s the guarantee to get the commercial value. But, at present, the study on the tight was dependent on the method of convention gas reservoirs, the production curve get from this method also the same with the convention gas reservoirs, in order to close with the really exploitation of tight gas reservoirs and provide the more accurate scientific evidence, we must study based on the feature of tight gas reservoir, in this situation, we can get the suitable production curves for tight gas reservoirs. This paper based on the feature of tight gas reservoir, combine with the model of multi-stage fractured horizontal wells, and get the production equation of tight gas, combine with the yield of discard time, we can get the type curve, and then get the C level reserves of region.

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.

The Adaptability Study for Developing Tight Gas Reservoirs Using Horizontal Wells

2013 ◽  
Vol 423-426 ◽  
pp. 614-617 ◽  
Author(s):  
Shu Qing Peng ◽  
Wan Chun Zhao
Keyword(s):  
Optimization Model ◽  
Horizontal Wells ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Gas Reservoir ◽  
Tight Gas Reservoirs ◽  
Tight Gas Reservoir ◽  
Development Effectiveness

In order to improve the development effectiveness of tight gas reservoirs, in this paper, the adaptability study of well type for developing tight gas reservoirs using horizontal wells was conducted in view of the characters of tight gas reservoir, and the well type optimization model for different reservoirs was proposed. The development effectiveness of the different well type for different reservoirs was put forward, and the adaptability of different well type for different reservoirs was obtained. The basic foundation and method of well type optimization for tight gas reservoirs was obtained.

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