The Role of Formation Damage in Hydraulic Fracturing Shale Gas Wells

2011 ◽  
Author(s):  
Boyun Guo ◽  
Deli Gao ◽  
Quanjun Wang
Keyword(s):  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Formation Damage ◽  
Gas Wells

Formation Damage Mechanisms Due to Hydraulic Fracturing of Shale Gas Wells

2020 ◽  
Author(s):  
Riza Elputranto ◽  
Ayse Pamir Cirdi ◽  
I. Yucel Akkutlu
Keyword(s):  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Formation Damage ◽  
Gas Wells ◽  
Damage Mechanisms

Application of Heat Treatment to Prevent Fracturing Fluid-Induced Formation Damage and Enhance Matrix Permeability in Shale Gas Reservoirs

2021 ◽  
Author(s):  
Mingjun Chen ◽  
Peisong Li ◽  
Yili Kang ◽  
Xinping Gao ◽  
Dongsheng Yang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Gas Transport ◽  
Formation Damage ◽  
Transport Capacity ◽  
Fracturing Fluid ◽  
Gas Reservoir ◽  
Shale Gas Reservoir ◽  
The Matrix

Abstract The low flowback efficiency of fracturing fluid would severely increase water saturation in a near-fracture formation and limit gas transport capacity in the matrix of a shale gas reservoir. Formation heat treatment (FHT) is a state-of-the-art technology to prevent water blocking induced by fracturing fluid retention and accelerate gas desorption and diffusion in the matrix. A comprehensive understanding of its formation damage removal mechanisms and determination of production improvement is conducive to enhancing shale gas recovery. In this research, the FHT simulation experiment was launched to investigate the effect of FHT on gas transport capacity, the multi-field coupling model was established to determine the effective depth of FHT, and the numerical simulation model of the shale reservoir was established to analyze the feasibility of FHT. Experimental results show that the shale permeability and porosity were rising overall during the FHT, the L-1 permeability increased by 30- 40 times, the L-2 permeability increased by more than 100 times. The Langmuir pressure increased by 1.68 times and the Langmuir volume decreased by 26%, which means the methane desorption efficiency increased. Results of the simulation demonstrate that the FHT process can practically improve the effect of hydraulic fracturing and significantly increase the well production capacity. The stimulation mechanisms of the FHT include thermal stress cracking, organic matter structure changing, and aqueous phase removal. Furthermore, the special characteristics of the supercritical water such as the strong oxidation, can not be ignored, due to the FHT can assist the retained hydraulic fracturing fluid to reach the critical temperature and pressure of water and transform to the supercritical state. The FHT can not only alleviate the formation damage induced by the fracturing fluid, but also make good use of the retained fracturing fluid to enhance the permeability of a shale gas reservoir, which is an innovative method to dramatically enhance gas transport capacity in shale matrix.

Casing Shearing Failure in Shale Gas Wells Due to Fault Slippage Caused by Hydraulic Fracturing-Case Study

2020 ◽  
Author(s):  
Kui Liu ◽  
Zhaowei Chen ◽  
Yijin Zeng ◽  
Hu Cao ◽  
Qian Tao ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Gas Wells

scholarly journals The role of supercritical carbon dioxide for recovery of shale gas and sequestration in gas shale reservoirs

2021 ◽  
Author(s):  
Qiao Lyu ◽  
Jingqiang Tan ◽  
Lei Li ◽  
Yiwen Ju ◽  
Andreas Busch ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Environmental Issues ◽  
Gas Shale ◽  
Horizontal Drilling ◽  
Shale Reservoirs ◽  
Supercritical Carbon

The development of hydraulic fracturing and horizontal drilling techniques has promoted the exploitation of shale gas resources. However, using water has several potential drawbacks including environmental issues, e.g., the contamination...

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