Estimating Long Term Well Performance in the Montney Shale Gas Reservoir

2014 ◽  
Author(s):  
Vu P. Dinh ◽  
Brad A. Gouge ◽  
Aaron White
Keyword(s):  
Shale Gas ◽  
Well Performance ◽  
Gas Reservoir ◽  
Shale Gas Reservoir

scholarly journals Development Evaluation and Optimization of Deep Shale Gas Reservoir with Horizontal Wells Based on Production Data

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Wuguang Li ◽  
Hong Yue ◽  
Yongpeng Sun ◽  
Yu Guo ◽  
Tianpeng Wu ◽  
...  
Keyword(s):  
Shale Gas ◽  
Production System ◽  
Target Position ◽  
Horizontal Wells ◽  
Gas Production ◽  
Well Performance ◽  
Gas Reservoir ◽  
Horizontal Section ◽  
Technical Problems ◽  
Shale Gas Reservoir

The implementation of horizontal wells is a key to economic development of the deep shale gas reservoir. In order to optimize the key parameters for drilling, stimulation, and the production system, the development effect of a horizontal well in deep shale gas formations was investigated from various aspects in this study. The drilling, fracturing, and production performances of this well were analyzed combining with the geological characteristics. The main technical problems and key factors that restrict the gas well performance and estimated ultimate recovery (EUR) were clarified. Through the integrated study of geology and engineering, the optimization strategies for increasing gas production and EUR are provided. The Z2 area, where the Z2-H1 well is located, has good reservoir physical properties, which bring a high drilling efficiency. However, there are still some problems during its development, such as poor fracture extension both horizontally and vertically, limited stimulated reservoir volume (SRV), rapid production declining, large water production, and serious liquid accumulation. In this study, a comprehensive approach was proposed that can improve single-well production and EUR by optimizing the target position, horizontal section length, pathway, spacing, new drilling and fracturing technology, and production system.

scholarly journals A Two-Phase Flowback Model for Multiscale Diffusion and Flow in Fractured Shale Gas Reservoirs

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Huimin Wang ◽  
J. G. Wang ◽  
Feng Gao ◽  
Xiaolin Wang
Keyword(s):  
Shale Gas ◽  
Fracture Network ◽  
Gas Diffusion ◽  
Gas Production ◽  
Gas Reservoir ◽  
Two Phase ◽  
Fractured Zone ◽  
Shale Gas Reservoir ◽  
Diffusion Mechanisms

A shale gas reservoir is usually hydraulically fractured to enhance its gas production. When the injection of water-based fracturing fluid is stopped, a two-phase flowback is observed at the wellbore of the shale gas reservoir. So far, how this water production affects the long-term gas recovery of this fractured shale gas reservoir has not been clear. In this paper, a two-phase flowback model is developed with multiscale diffusion mechanisms. First, a fractured gas reservoir is divided into three zones: naturally fractured zone or matrix (zone 1), stimulated reservoir volume (SRV) or fractured zone (zone 2), and hydraulic fractures (zone 3). Second, a dual-porosity model is applied to zones 1 and 2, and the macroscale two-phase flow flowback is formulated in the fracture network in zones 2 and 3. Third, the gas exchange between fractures (fracture network) and matrix in zones 1 and 2 is described by a diffusion process. The interactions between microscale gas diffusion in matrix and macroscale flow in fracture network are incorporated in zones 1 and 2. This model is validated by two sets of field data. Finally, parametric study is conducted to explore key parameters which affect the short-term and long-term gas productions. It is found that the two-phase flowback and the flow consistency between matrix and fracture network have significant influences on cumulative gas production. The multiscale diffusion mechanisms in different zones should be carefully considered in the flowback model.

A Probe into Branch Fracture of Shale Gas Reservoir in China

2012 ◽  
Author(s):  
Chen Mingzhong ◽  
Qian Bing ◽  
Ou Zhilin ◽  
Zhang juncheng ◽  
Jiang Hai ◽  
...  
Keyword(s):  
Shale Gas ◽  
Gas Reservoir ◽  
Shale Gas Reservoir
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