scholarly journals Transient Pressure Analysis of Volume-Fractured Horizontal Wells Considering Complex Fracture Networks and Stress Sensitivity in Tight Reservoirs

ACS Omega ◽  
2019 ◽  
Vol 4 (11) ◽  
pp. 14466-14477 ◽  
Author(s):  
Zhun Li ◽  
Xiaodong Wu ◽  
Guoqing Han ◽  
Gaoqiang Ma ◽  
Lufeng Zhang ◽  
...  
Keyword(s):  
Horizontal Wells ◽  
Stress Sensitivity ◽  
Fracture Networks ◽  
Transient Pressure ◽  
Complex Fracture ◽  
Transient Pressure Analysis ◽  
Tight Reservoirs ◽  
Fractured Horizontal Wells ◽  
Pressure Analysis

Transient Pressure Analysis in Multi-Stage Fractured Horizontal Wells from Tight Gas Reservoirs with Weak Fluid Supply

2020 ◽  
Author(s):  
Zhiming Chen ◽  
Jiali Zhang ◽  
Luming Shi ◽  
Juan Zhao ◽  
Lijia Yuan ◽  
...  
Keyword(s):  
Horizontal Wells ◽  
Tight Gas ◽  
Transient Pressure ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
Multi Stage ◽  
Fluid Supply ◽  
Transient Pressure Analysis ◽  
Fractured Horizontal Wells ◽  
Pressure Analysis

PERFORMANCE ANALYSIS OF MULTI-FRACTURED HORIZONTAL WELLS WITH COMPLEX FRACTURE NETWORKS IN SHALE GAS RESERVOIRS

2019 ◽  
Vol 22 (3) ◽  
pp. 299-320 ◽  
Author(s):  
Guanglong Sheng ◽  
Ting Xu ◽  
Feifei Gou ◽  
Yuliang Su ◽  
Wendong Wang ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Shale Gas ◽  
Horizontal Wells ◽  
Fracture Networks ◽  
Gas Reservoirs ◽  
Complex Fracture ◽  
Shale Gas Reservoirs ◽  
Fractured Horizontal Wells

The transient pressure behavior model of multiple horizontal wells with complex fracture networks in tight oil reservoir

2019 ◽  
Vol 173 ◽  
pp. 650-665 ◽  
Author(s):  
Zongxiao Ren ◽  
Ruifeng Yan ◽  
Xing Huang ◽  
Wenqiang Liu ◽  
Shibao Yuan ◽  
...  
Keyword(s):  
Horizontal Wells ◽  
Tight Oil ◽  
Oil Reservoir ◽  
Behavior Model ◽  
Fracture Networks ◽  
Transient Pressure ◽  
Pressure Behavior ◽  
Complex Fracture ◽  
Tight Oil Reservoir

scholarly journals Transient Pressure Analysis for Multi-Fractured Horizontal Well with the Use of Multi-Linear Flow Model in Stress Sensitive Shale Gas Reservoir

2019 ◽  
Author(s):  
Guangdong Wang ◽  
Ailin Jia ◽  
Yunsheng Wei ◽  
Cong Xiao
Keyword(s):  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Flow Model ◽  
Stress Sensitivity ◽  
Critical Parameters ◽  
Transient Pressure ◽  
Linear Flow ◽  
Transient Pressure Analysis ◽  
Spatially Varying ◽  
Pressure Analysis

Shale gas reservoirs (SGR) are important replacements for conventional energy resources and have been widely exploited by hydraulic fracturing technologies. On the one hand, due to the inherent ultra-low permeability and porosity, there is stress sensitivity in the reservoirs generally. On the other hand, hydraulic fractures and the stimulated reservoir volume (SRV) generated by the massive hydraulic fracturing operation have contrast properties with the original reservoirs. These two phenomena bring huge challenges in SGR transient pressure analysis. Although some works in the literatures have been done on the transient pressure analysis of multi-fractured horizontal wells in SGR, unfortunately, none of them has taken the stress sensitivity and spatially varying permeability of SRV zone into consideration simultaneously. To fill this gap, this paper first idealizes the SGR to be four linear composite regions. What’s more, SRV zone is further divided into sub-sections on the basis of non-uniform distribution of proppant within SRV zone which easily yields spatially varying permeability away from the main hydraulic fracture. The stress sensitivity is characterized by the varying permeability depended on the pore pressure. By means of perturbation transformation and Laplace transformation, an analytical multi-linear flow model (MLFM) is obtained and validated by the comparison with the previous model. On the basis of our model, the flow regimes are identified and the sensitivity analysis of critical parameters are conducted to further understand the transient pressure behaviors. The research results provided by this work are of significance for well test interpretation and production performance analysis of SGR.

scholarly journals Transient Pressure Analysis for Multifractured Horizontal Well with the Use of Multilinear Flow Model in Shale Gas Reservoir

Geofluids ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-20 ◽  
Author(s):  
Guangdong Wang ◽  
Ailin Jia ◽  
Yunsheng Wei ◽  
Cong Xiao
Keyword(s):  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Flow Model ◽  
Stress Sensitivity ◽  
Critical Parameters ◽  
Hydraulic Fractures ◽  
Transient Pressure ◽  
Transient Pressure Analysis ◽  
Spatially Varying ◽  
Pressure Analysis

Shale gas reservoirs (SGR) have been a central supply of carbon hydrogen energy consumption and hence widely produced with the assistance of advanced hydraulic fracturing technologies. On the one hand, due to the inherent ultralow permeability and porosity, there is stress sensitivity in the reservoirs generally. On the other hand, hydraulic fractures and the stimulated reservoir volume (SRV) generated by the massive hydraulic fracturing operation have contrast properties with the original reservoirs. These two phenomena pose huge challenges in SGR transient pressure analysis. Limited works have been done to take the stress sensitivity and spatially varying permeability of the SRV zone into consideration simultaneously. This paper first idealizes the SGR to be four linear composite regions. What is more, the SRV zone is further divided into subsections on the basis of nonuniform distribution of proppant within the SRV zone which easily yields spatially varying permeability away from the main hydraulic fracture. By means of perturbation transformation and Laplace transformation, an analytical multilinear flow model (MLFM) is obtained and validated as a comparison with the previous models. The flow regimes are identified, and the sensitivity analysis of critical parameters is conducted to further understand the transient pressure behaviors. The research results provided by this work are of significance for an effective recovery of SGR resources.

scholarly journals Study on Deliverability Evaluation of Staged Fractured Horizontal Wells in Tight Oil Reservoirs

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5857
Author(s):  
Siyu Liu ◽  
Shengchun Xiong ◽  
Dingwei Weng ◽  
Peng Song ◽  
Rou Chen ◽  
...  
Keyword(s):  
Network Structure ◽  
Horizontal Wells ◽  
Fracture Network ◽  
Stress Sensitivity ◽  
Oil Reservoirs ◽  
Tight Oil ◽  
Complex Fracture ◽  
Complex Fracture Network ◽  
Tight Oil Reservoirs ◽  
Fractured Horizontal Wells

At present, the existing deliverability evaluation models mainly consider the impact of specific factors on production, and the description of the complex fracture network structure primarily remains at the stage of an ideal dual-pore medium with uniform distribution. However, this cannot reflect the actual fracture network structure and fluid flow law of fractured horizontal wells. Thus, in this paper, a non-uniform fracture network structure is proposed considering the influence of the threshold pressure gradient and stress sensitivity characteristics on the production performance of horizontal wells. The stress sensitivity and the fractal theory are combined to characterize the permeability of the complex fracture network, and a three-zone compound unsteady deliverability model for staged fractured horizontal wells in tight oil reservoirs is successfully developed. Laplace transformation, perturbation theory, and numerical inversion are applied to obtain the semi-analytical solution of the proposed deliverability model. The reliability and accuracy of the analytical solution are verified by the classical tri-linear flow model and an oil field example. The effects of related influential parameters on the production of horizontal wells are analyzed. The deliverability evaluation method proposed in this paper can provide a theoretical basis for formulating rational development technology policies for tight oil reservoirs.

scholarly journals Straight-Line Conventional Transient Pressure Analysis for Horizontal Wells with Isolated Zones

DYNA ◽  
2014 ◽  
Vol 81 (185) ◽  
pp. 78 ◽  
Author(s):  
Freddy Humberto Escobar ◽  
Alba Rolanda Meneses ◽  
Liliana Marcela Losada
Keyword(s):  
Horizontal Wells ◽  
Transient Pressure ◽  
Straight Line ◽  
Transient Pressure Analysis ◽  
Pressure Analysis
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