Case Study: Drilling Horizontal Exploration Shale Gas Wells Efficiently by Collaboration of Subsurface and Drilling Teams Utilizing Geosciences Technology

2010 ◽  
Author(s):  
Nasikul Islam
Keyword(s):  
Shale Gas ◽  
Gas Wells

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 Evolution of H-O isotopes from fracturing flowback fluids for shale gas wells: A case study in Chongqing, China

2021 ◽  
Vol 784 (1) ◽  
pp. 012001
Author(s):  
Haijie Zhang ◽  
Guiwen Xu ◽  
Yuanping Luo ◽  
Weiming Chen ◽  
Chunbi Xu ◽  
...  
Keyword(s):  
Shale Gas ◽  
Gas Wells ◽  
O Isotopes

Semianalytical Model for Fault Slippage Resulting from Partial Pressurization

SPE Journal ◽  
2019 ◽  
Vol 25 (03) ◽  
pp. 1489-1502 ◽  
Author(s):  
Kui Liu ◽  
Arash Dahi Taleghani ◽  
Deli Gao
Keyword(s):  
Shale Gas ◽  
Hydraulic Fracture ◽  
Fault Reactivation ◽  
Hydraulic Fractures ◽  
Gas Wells ◽  
Principal Stresses ◽  
Casing Deformation ◽  
Spacing Selection ◽  
Casing Failure

Summary Casing failure in shale gas wells has seriously impacted production from Weiyuan and Changning fields in Sichuan Province, China. Linearly distributed microseismic data and the corresponding casing shear deformation close to these microseismic signals indicate fault reactivation in these areas during hydraulic-fracturing treatments. Apparently, interaction of hydraulic fractures with nearby faults causes fault slippage, which in some situations has led to well shearing. Hence, we propose a semianalytical model in this paper to estimate the length of slippage along the fault that is caused by pressurization of a fault intercepted by the hydraulic fracture. These calculations have been performed for different configurations of the fault with respect to the hydraulic fracture and principal stresses. Using the semianalytical model provided in this paper, two fault slippage cases are calculated to assess the casing failure in nearby wells. In one case study, the calculated results of the fault slippage are consistent with the scale of casing deformation in that well and a microseismic magnitude caused by fault slippage is calculated that is larger than the detected events. The presented model will provide a tool for a quick estimation of the magnitude of fault slippage upon intersection with a hydraulic fracture, to avoid potential casing failures and obtain a more reliable spacing selection in the wells intersecting faults.

scholarly journals Cement sheath integrity of shale gas wells: A case study from the Sichuan Basin

2018 ◽  
Vol 5 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Shuoqiong Liu ◽  
Deqi Li ◽  
Jinping Yuan ◽  
Fengzhong Qi ◽  
Jiyun Shen ◽  
...  
Keyword(s):  
Shale Gas ◽  
Sichuan Basin ◽  
Gas Wells ◽  
Cement Sheath ◽  
The Sichuan Basin

A Methodology to Quantify the Volume-of-investigation in DFIT Design for Shale Gas Wells

2019 ◽  
Author(s):  
Zhiming Chen ◽  
Hongyang Chu ◽  
Xuefeng Tang ◽  
Lingyu Mu ◽  
Peng Dong ◽  
...  
Keyword(s):  
Shale Gas ◽  
Gas Wells
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