Electrokinetic nanoparticle injection for remediating leaks in oil well cement

Němeček, Jiří; Li, Linfei; Xi, Yunping

doi:10.1016/j.conbuildmat.2017.08.152

Cited by 26 publications

(10 citation statements)

References 47 publications

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“…They have investigated the efficiency of nanosilica and nanoalumina for electrokinetic remediation of cracked cement samples. Decreased overall porosity and pore sealing was noticeable on the cracked samples [84]. In order to reach a good microstructure refinement and mechanical performance, the repair particles need to have less stiffness than the aged cement paste and appropriate particle size [85].…”

Section: Repair Of Damaged Cement Sheathmentioning

confidence: 98%

Electrokinetics Application in Concrete and Well Construction

Jafariesfad

Sangesland

Gawel

et al. 2020

Volume 11: Petroleum Technology

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Electrically induced or coupled transport processes including electrophoresis, electroosmosis and electromigration in solutions and porous media under an external electric field have been extensively studied and employed in many disciplines. For protection and rehabilitation of concrete structures, cathodic protection, electrochemical realkalization, and chloride extraction are extensively used. Other electrokinetic techniques are developed for the concrete industry, but have not been widely used so far, including electrokinetic treatment processes, for corrosion mitigation, recovery from sulfate attack, crack healing, and porosity and permeability reduction. These processes can improve the microstructure of the cement-based systems resulting in an improved performance in long-term and can be applied to repair failed structures. Application of electrokinetic processes are rapidly extended in well construction due to the increased interest in techniques enabling manipulation of micro- and nanosized particles. The techniques could be beneficial in building a robust cement sheath in oil and gas wells. Additionally, electrokinetic remediation techniques can possibly be introduced for repairing damaged structures in oil and gas wells. This review provides an overview of electrokinetic-based techniques, which has been introduced to cement-based materials, mainly reinforced concrete. The potential application of these techniques in oil well construction is discussed.

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Section: Repair Of Damaged Cement Sheathmentioning

confidence: 98%

Electrokinetics Application in Concrete and Well Construction

Jafariesfad

Sangesland

Gawel

et al. 2020

Volume 11: Petroleum Technology

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“…This involves the movement of either positively charged cations or the negatively charged anions under the influence of electric field [45]. Previous laboratory experiments demonstrate that at high initial ionic concentration and low soil pH (between 2 and 3), electromigration becomes the dominant transport mechanism under DC electric field [3].…”

Section: Electromigrationmentioning

confidence: 99%

Effectiveness of electrokinetic-enhanced oil recovery (EK-EOR): a systematic review

et al. 2022

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Hydrocarbons continue to play an important role in providing affordable energy to meet rising energy demand. Amidst growing concerns on the environmental impact of oil and gas production processes, many researchers are increasingly exploring environmentally sustainable methods of extracting hydrocarbons from the reservoir. The introduction of direct current into the pore space activates mechanisms that enhance fluid flow, reduces produced water, decreases associated hydrogen sulfide production, and leaves no material footprint on the environment. Previous laboratory studies and field applications have reported varying degrees of success of the EK-EOR mechanism. However, the mechanism and effectiveness of this technique remain unclear. This systematic literature review provides an opportunity to critically evaluate laboratory results, establish a basis for the effectiveness of the EK-EOR mechanism and identify possible future research directions. In this study, 52 articles were identified and reviewed in a selection process that adhered to the PRISMA protocol. Data extracted from these articles were fed into the EK-EOR model, and Monte Carlo simulation (10,000 iterations) was used to determine the success rate of the EK-EOR process. Insights obtained from the simulation indicate that EK-EOR alone is not effective (with a success rate of 45%). Insights from published laboratory experiments indicate that interstitial clay affects the electro-osmotic permeability of reservoir rocks which determines the effectiveness of the EK-EOR mechanism. Salt deposition on the cathode and generation of gases (oxygen and chlorine at the anode) are significant limitations of the EK-EOR. The review concludes by identifying future areas of application of EK-EOR.

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“…None of them is easy and long-lasting. Reverting corrosion in the first and second stages can also be performed via several non-destructive methods such as lowering chloride concentration in concrete by electrochemical chloride removal [2], electro-migration of corrosion inhibitors towards reinforcement [3][4][5] or injection of nanoparticles into concrete [6][7][8]. Some of the processes can be applied simultaneously, e.g.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of chloride induced corrosion in reinforced concrete structures and its modeling

Němeček

Trávníček

Němečková

et al. 2021

Koroze a Ochrana Materialu

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The paper is primarily focused on the description of transport of harmful species in concrete such as chlorides on one side and transport of corrosion inhibitors and nanoparticles used to diminish corrosion of steel reinforcement or seal the microstructure of concrete on the other side. The studied processes are helpful in reverting the chloride induced corrosion of the reinforcement in reinforced concrete structures. The transport mechanisms are summarized with the emphasis on their mathematical description and numerical solution. The paper shows modeling results of the processes including a comparison with experimental data on several typical examples. The efficiency of the methods is shown supported by experimental and numerical results. A good correlation of the models with experiments is achieved.

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Electrokinetic nanoparticle injection for remediating leaks in oil well cement

Cited by 26 publications

References 47 publications

Electrokinetics Application in Concrete and Well Construction

Electrokinetics Application in Concrete and Well Construction

Effectiveness of electrokinetic-enhanced oil recovery (EK-EOR): a systematic review

Mitigation of chloride induced corrosion in reinforced concrete structures and its modeling

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