Design and Execution of a Successful Well Kill on the World's Longest-Running 
Blow-out

Bellis, Chris; Bothwell, P. W.; Burke, Lyle H.; Grace, Robert; MacDonald, Ron; McLellan, P.J.

doi:10.2523/90542-ms

Cited by 2 publications

(2 citation statements)

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“…The process for rectifying well blowouts is dynamic and site-specific, with a number of methods available. Prior to mechanical repair of the well it is necessary to kill (i.e., hydraulically control) the well by injecting high density fluids at a rapid enough rate downhole to increase hydraulic head and well-friction, stopping of blowing fluid [21,26].…”

Section: Loss Of Control Mechanisms Impacts and Mitigationmentioning

confidence: 99%

Can We Treat CO2 Well Blowouts like Routine Plumbing Problems? A Study of the Incidence, Impact, and Perception of Loss of Well Control

2014

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Risk communication literature suggests that for a number of reasons, the public may perceive a risk to be greater than indicated by its statistical probability. Public concern over risk can lead to significant and costly delays in project permitting and operations. Considering these theories, media coverage of CO 2 -related well blowouts in 2013 gave rise to the questions: What is the risk of CO 2 well blowouts associated with CCUS through CO 2 EOR? What is the potential public perception of those risks? What information could be used to respond to public concern? To address these questions, this study aims to: 1) provide a framework for understanding the nature of onshore well blowouts, 2) quantify the incidence of such events for three specific geographic regions of Texas, 3) relate this data to CCUS and findings from other studies, and 4) explore the potential implications for public perception of this risk associated with CCUS projects. While quantifying answers to these questions proved to be challenging, the results from this study suggest that (1) the perceived risk of CO 2 well blowouts may exceed the statistical risk and (2) information that could be used to address this gap could be made more readily available to the greater benefit of industry and stakeholders who support the development of CCUS as an option for addressing anthropogenic CO 2 emissions. The study also suggests approaches to best conduct such data inquiries.

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Section: Loss Of Control Mechanisms Impacts and Mitigationmentioning

confidence: 99%

Can We Treat CO2 Well Blowouts like Routine Plumbing Problems? A Study of the Incidence, Impact, and Perception of Loss of Well Control

2014

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“…Information of serious SCVF/GM flows, saline water flows and liquid hydrocarbon flows at wells located in or near river valleys has been anecdotally reported, and in some cases well documented, as in the case of a well in the valley of Peace River in Alberta that discharged brine and natural gas for decades 7 . River valleys may facilitate gas migration and surface casing vent flow due to the removal of overburden.…”

Section: Topographymentioning

confidence: 99%

Evaluation of the Potential for Gas and CO2 Leakage Along Wellbores

Watson

Bachu

2007

All Days

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fax 01-972-952-9435. AbstractImplementation of carbon dioxide storage in geological media requires a proper assessment of the risk of CO 2 leakage from storage sites. Leakage pathways may exist through and along wellbores which may penetrate or be near to the storage site. One method of assessing the potential for CO 2 leakage through wells is by mining databases that usually reside with regulatory agencies These agencies collect data concerning wellbore construction, oil and gas production, and other regulated issues for existing wells. The Alberta Energy and Utilities Board (EUB), the regulatory agency in Alberta, Canada, collects and stores information about more than 315,000 oil, gas and injection wells in the province of Alberta, Canada. The EUB also records well leakage at the surface as surface casing vent flow (SCVF) through wellbore annuli and gas migration (GM) outside casing, as reported by industry.The evaluation of a leakage pathway through wellbore casing or annuli and what causes these wellbore leaks is a first step in determining what factors may contribute to wellbore leakage from CO 2 storage sites. By utilizing available data, major factors which contribute to wellbore leakage were identified. Data analysis shows that there is a correlation between these SCVF/GM and economic activity, technology changes, geographic location and regulatory changes regarding well completion and abandonment. Further analysis indicates a relationship between low annular cement top, external corrosion, casing failure and wellbore leakage (SCVF/GM). Other factors that could affect the presence of wellbore leakage, such as wellbore deviation, surface casing depth and wellbore density, were also investigated.This paper presents the findings of the data analysis and a method to evaluate the potential for leakage along wells in an area where CO 2 storage is intended. This information is useful not only for future operations of CO 2 storage in geological media, but also for current operations relating to the exploration and production of hydrocarbons.

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Design and Execution of a Successful Well Kill on the World's Longest-Running Blow-out

Cited by 2 publications

References 0 publications

Can We Treat CO2 Well Blowouts like Routine Plumbing Problems? A Study of the Incidence, Impact, and Perception of Loss of Well Control

Can We Treat CO2 Well Blowouts like Routine Plumbing Problems? A Study of the Incidence, Impact, and Perception of Loss of Well Control

Evaluation of the Potential for Gas and CO2 Leakage Along Wellbores

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