Journal ArticleDOI
Wellbore integrity analysis of a natural CO2 producer
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TLDR
In this article, a 30-year old well from a natural CO2 production reservoir was investigated and the results were used as part of the CO2 Capture Project's effort to assess wellbore integrity performance in CO2 storage sites.About:
This article is published in International Journal of Greenhouse Gas Control.The article was published on 2009-02-01. It has received 245 citations till now. The article focuses on the topics: Well integrity & Casing.read more
Citations
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Journal ArticleDOI
The Environmental Costs and Benefits of Fracking
Robert B. Jackson,Avner Vengosh,J. William Carey,Richard J. Davies,Thomas H. Darrah,Francis O'Sullivan,Gabrielle Pétron +6 more
TL;DR: In this article, the authors argue that the switch from coal to natural gas for electricity generation will reduce sulfur, nitrogen, mercury, and particulate air pollution, but the question of whether natural gas will displace coal compared with renewables is open.
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Review of integrity of existing wells in relation to CO2 geological storage: What do we know?
Min Zhang,Stefan Bachu +1 more
TL;DR: In this article, the authors review the status of knowledge in regard to the failure of existing wells, with special attention to the laboratory experiments, field investigations and numerical simulations carried out in the last several years in attempts to elucidate the behavior of well cements in the presence of CO2.
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Status of CO2 storage in deep saline aquifers with emphasis on modeling approaches and practical simulations
TL;DR: In this paper, a range of simplified governing equations have been proposed to model the CO2 storage in deep saline aquifers, and these simplifying assumptions have provided significant practical insights into system behavior, including improved estimates of storage capacity.
Journal ArticleDOI
Comparison of geomechanical deformation induced by megatonne-scale CO2 storage at Sleipner, Weyburn, and In Salah
TL;DR: This study examines three large-scale sites where CO2 is injected at rates of ∼1 megatonne/y or more: Sleipner, Weyburn, and In Salah, with particular focus on the risks to storage security posed by geomechanical deformation.
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Identification and evaluation of well integrity and causes of failure of well integrity barriers (A review)
Raj Kiran,Catalin Teodoriu,Younas Dadmohammadi,Runar Nygaard,David A. Wood,Mehdi Mokhtari,Saeed Salehi +6 more
TL;DR: In this article, a broad review of research and field experiences related to well integrity is presented, which can be classified based on chemical, mechanical, and operational factors such as pressure, temperature, chemical changes, corrosion, and in-situ conditions.
References
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Journal ArticleDOI
Degradation of well cement by CO2 under geologic sequestration conditions.
TL;DR: The cement cured at 50 degrees C and 30.3 MPa exhibited a shallower depth of degradation and displayed a well-defined carbonated zone as compared to cement cured under ambient conditions, likely due to smaller, more evenly distributed Ca(OH)2(s) crystals that provide a uniform and effective barrier to CO2 attack.
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Wettability alteration of caprock minerals by carbon dioxide
TL;DR: In this paper, a detailed analysis of the available literature data on breakthrough pressure measurements in caprock samples confirms the existence of a wettability alteration by dense CO2, both in shaly and in evaporitic caprocks.
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Analysis and performance of oil well cement with 30 years of CO2 exposure from the SACROC Unit, West Texas, USA
J. William Carey,Marcus Oliver Wigand,Steve J. Chipera,Giday WoldeGabriel,Rajesh J. Pawar,Peter C. Lichtner,Scott C. Wehner,Michael A. Raines,George D. Guthrie +8 more
TL;DR: In this article, a core sample including casing, cement, and shale caprock was obtained from a 30-year old CO2-flooding operation at the SACROC Unit, located in West Texas.
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Spatial characterization of the location of potentially leaky wells penetrating a deep saline aquifer in a mature sedimentary basin
TL;DR: In this paper, a spatial analysis of wells that penetrate a deep aquifer in the Alberta Basin was performed and various statistical measures to quantify the spatial distribution of these wells were presented.
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CO2/water interfacial tensions under pressure and temperature conditions of CO2 geological storage
TL;DR: In this article, pendant drop measurements of IFTs between water and CO2 in a range of temperatures (308-383 K) and pressures (5-45 K) relevant to CO2 storage in deep geological formations are presented.