Wellbore Stability Optimization in Shale Gas Wells by Integrating Geomechanics and Drilling Practices

2013 ◽  
Author(s):  
Safdar Khan ◽  
Anurag Yadav
Keyword(s):  
Shale Gas ◽  
Wellbore Stability ◽  
Gas Wells

Effect of Weak Bedding Planes on Wellbore Stability for Shale Gas Wells

2012 ◽  
Author(s):  
Yufei Li ◽  
Yongqiang Fu ◽  
Geng Tang ◽  
Chaoyi She ◽  
Jianhua Guo ◽  
...  
Keyword(s):  
Shale Gas ◽  
Wellbore Stability ◽  
Gas Wells ◽  
Bedding Planes

Anisotropic Wellbore Stability Model and Its Application for Drilling through Challenging Shale Gas Wells

2014 ◽  
Author(s):  
Gongrui Yan ◽  
Florian Karpfinger ◽  
Romain Prioul ◽  
Huiying Tang ◽  
Yiming Jiang ◽  
...  
Keyword(s):  
Shale Gas ◽  
Wellbore Stability ◽  
Gas Wells ◽  
Stability Model

scholarly journals Experimental Study and Stabilization Mechanisms of Silica Nanoparticles Based Brine Mud with High Temperature Resistance for Horizontal Shale Gas Wells

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Xian-yu Yang ◽  
Ye Yue ◽  
Ji-hua Cai ◽  
Yue Liu ◽  
Xiao-ming Wu
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Silica Nanoparticles ◽  
Shale Gas ◽  
Wellbore Stability ◽  
Fluid Loss ◽  
Gas Wells ◽  
Temperature Resistance ◽  
Pressure Transmission ◽  
High Temperature Resistance

Previous studies showed that silica nanoparticles based fresh water drilling muds had good thermal stability up to 160°C; however its performance at high salt concentration was rather poor. Therefore, high performance silica nanoparticles based brine mud (NPBMs) with high temperature resistance for horizontal shale gas wells was proposed. Thermal stability tests from ambient temperature to 180°C, along with pressure transmission tests and rheology analysis, were performed to evaluate comprehensive properties of the NPBMs. Results show that the NPBMs embody excellent salt tolerance and thermal resistance for their rheological parameters did not suffer significant fluctuation. Fluid loss of the NPBM-1 (4% NaCl plus 3% KCl) at 180°C was only 7.6 mL while the NPBM-2 (10% NaCl plus 3% KCl) had a fluid loss of 6.6 mL at 150°C. Low water activity and good lubricity of the NPBMs were beneficial to improve wellbore stability and reduce friction resistance. Pressure transmission tests on the NPBM-1 show that it can mitigate or even prevent the transmission of drilling mud pressure into shale thus improving wellbore stability. Additionally, optimal rheological models for the NPBM-1 and the NPBM-2 were Herschel-Bulkley model and Power Law model separately.

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

scholarly journals Integrity tests of cement sheath for shale gas wells under strong alternating thermal loads

2020 ◽  
Vol 7 (6) ◽  
pp. 671-679
Author(s):  
Yuanhua Lin ◽  
Kuanhai Deng ◽  
Hao Yi ◽  
Dezhi Zeng ◽  
Liang Tang ◽  
...  
Keyword(s):  
Shale Gas ◽  
Thermal Loads ◽  
Gas Wells ◽  
Cement Sheath ◽  
Integrity Tests
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