Journal ArticleDOI
A wellbore stability analysis model with chemical-mechanical coupling for shale gas reservoirs
Tianshou Ma,Ping Chen +1 more
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TLDR
In this article, a mathematical model was proposed to analyze wellbore stability based on a quantitative solution for stress induced by mechanical, hydraulic and chemical effects, and the effective stress tensor around the borehole in a cylindrical coordinate system was also obtained.About:
This article is published in Journal of Natural Gas Science and Engineering.The article was published on 2015-09-01. It has received 87 citations till now. The article focuses on the topics: Mud weight & Effective stress.read more
Citations
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Borehole-stability model to couple the mechanics and chemistry of drilling-fluid/shale interactions
F. K. Mody,A. H. Hale +1 more
TL;DR: In this paper, a borehole-stability model that uniquely couples the mechanical and chemical aspects of drilling-fluid/shale interactions was developed, which allows the user to determine the optimum drilling parameters (e.g., mud weight and salt concentration) to alleviate borehole stability-related problems with oil- or water-based drillingfluid systems.
Journal ArticleDOI
Experimental investigation on the mechanical behaviours of a low-clay shale under water-based fluids
TL;DR: In this article, an experimental study of the impact of water-based fluids on the mechanical properties of a low-clay shale is presented. But, little research has been done to investigate such effect on resource shales which mainly have low clay contents.
Journal ArticleDOI
Wellbore stability analysis and well path optimization based on the breakout width model and Mogi-Coulomb criterion
TL;DR: In this paper, a semi-analytic model of wellbore stability analysis was proposed based on the stress distribution model, failure criteria and the breakout width model, and the results showed that the lowest safe MW predicted by Mogi-Coulomb criterion is always lower than the Mohr-Coulosomb criterion.
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On the damage constitutive model for hydrated shale using CT scanning technology
TL;DR: In this paper, a novel characterization method for identifying hydrated shale damage characteristics is presented using X-ray CT (computed tomography) scanning technology and damage mechanics. And a constitutive damage model was proposed based on the evolution equation of the damage variable for shale.
Journal ArticleDOI
Geomechanical behaviors of shale after water absorption considering the combined effect of anisotropy and hydration
TL;DR: In this paper, a series of compression tests for these specimens were then conducted under four different confining pressures to investigate their geomechanical behaviors considering the combined effect of anisotropy and hydration.
References
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Book
Fundamentals of rock mechanics
John Conrad Jaeger,N. G. W. Cook +1 more
TL;DR: In this article, Mecanique des roches and Analyse des contraintes were used to construct Elasticite Reference Record (ER) and Elasticite reference record (ER).
Book
Petroleum Related Rock Mechanics
TL;DR: In this article, the authors present a method for estimating the minimum number of men required to prevent a borehole from collapsing due to a failure, based on anisotropy and nonlinear elasticity.
Journal ArticleDOI
Geological characteristics and resource potential of shale gas in China
Caineng Zou,Dazhong Dong,Shejiao Wang,Jianzhong Li,Xinjing Li,Yuman Wang,Denghua Li,Keming Cheng +7 more
TL;DR: In this article, the authors introduce the depositional environment, geochemical and reservoir characteristics, gas concentration and prospective resource potential of three different types of shale in China: marine shale, marine-terrigenous coalbed carbonaceous shale and terrigenrous shale.
Journal ArticleDOI
Laboratory investigation of the mechanical behaviour of Tournemire shale
TL;DR: In this article, the authors investigated the mechanical behavior of a typical anisotropic rock, Tournemire shale, and found that the failure behavior of the shale is anisotropy and strongly depends on confining pressure and loading orientation.
Journal ArticleDOI
Well bore breakouts and in situ stress
TL;DR: In this article, the cross-sectional shape of stress induced well bore breakouts has been studied using specially processed ultrasonic borehole televiewer data and a simple elastic failure model was introduced to explain many features of the observations.