Near well-bore sealing in the Bečej CO2 reservoir: Field tests of a silicate based sealant

Wiese, Bernd; Fleury, Marc; Basić, Ivan; Abdollahi, Jafar; Patrnogić, Aleksandar; Hofstee, C.; Carlsen, Inge M.; Wollenweber, Jens; Schmidt‐Hattenberger, Cornelia; Drysdale, Robert G.; Karas, Dusan

doi:10.1016/j.ijggc.2019.01.027

Cited by 7 publications

(2 citation statements)

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“…3) Silicate gels are very environmentally friendly. (4) Silicate gels are easy to remove when encountering unexpected accidents. , However, Burns et al argued that it was hard to produce uniform silicate gel due to the rapid reaction between an acidic setting agent and sodium silicate, which causes fast gelation and reduces the injectivity of the silicate gel. To overcome this problem, specific types of initiators are employed in the gel system to postpone the development of silicate gel.…”

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

et al. 2021

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Carbon capture and storage (CCS) technology has been widely investigated to decrease the greenhouse effect. Geological CO2 storage sites are targeted mainly on depleted petroleum reservoirs or deep saline aquifers. However, CO2 leakage might take place through wellbores, cap rocks, reservoir fractures, or faults during or after the process of CO2 storage leading to environmental problems. To minimize these hazards, different kinds of sealants have been developed and applied. This review aims to summarize those materials applicable to CO2 leakage remediation. On the basis of the sealing mechanisms and compositions of different sealant materials, they were divided into seven major types: Portland cement, geopolymer cement, resins, biofilms barriers, gel systems, foams, and nanoparticles. For different types of sealants, their application background, chemical and physical properties, CO2 leakage remediation mechanism, impact factors of sealing performance, advantages, and limitations were summarized. Future development directions for these sealant materials are also recommended. To solve the problem caused by the weak acid-resistant performance of Portland cement, anti-CO2 materials should be developed and added to the formulation. Environmentally friendly materials need to be designed to replace some current user-hostile compositions in the geopolymer cement. Moreover, chemicals that can control the geopolymerization process are also required because of the high curing temperature requirement for the recent geopolymer productions. The injectivity of Portland cement and resin limits its application for in-depth CO2 leakage control; however, gels with relatively low viscosity during the injection can be a good alternative, although their thermal stability and strength need to be further enhanced. Biotechnology and nanotechnology are perspectives to be applied in the CO2 leakage control process. Foams with good stability might be used for CO2 leakage remediation in the porous medium without fractures, but their life cycle should be prolonged.

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Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

et al. 2021

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“…However, due to the large size of hydrogel particles, the transport distance in the formation is limited, and so they cannot meet the requirements of in-depth profile control or oil displacement in oil–gas reservoirs. In the late stage of CO 2 flooding in particular, although CO 2 flooding is an effective technology for low permeability reservoir development, the gas channeling problem is serious in low permeability reservoirs [ 26 , 27 ]. Thus, there is an urgent need for novel thermo-/pH-dual-responsive nanogel designs that can overcome the size-matching difficulty, maintain the environmental thixotropic stability, and improve the plugging efficiency in low-permeability CO 2 flooding reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Thermo-/pH-Dual-Sensitive PEG/PAMAM Nanogel: Reaction Dynamics and Plugging Application of CO2 Channeling

Liu

Wang

Shi

et al. 2022

Gels

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Smart hydrogels, owing to their exceptional viscoelastic and deformable capacity in response to environmental stimulation involving temperature and pH, have been successfully applied in oilfields for purposes such as water and/or gas shutoff treatments. However, the CO2 breakthrough problem in low permeability reservoirs has not been well solved. In this work, a rheological method-based Avrami dynamics model and Dickinson dynamics model were employed to investigate the dynamic gelation process of thermo-/pH-dual-sensitive PEG/PAMAM nanogels to further our understanding of the microstructure of their gelation and pertinence plugging application. Plugging experiments were performed by alternating injections of CO2 and hydrogel solution in a slug type on three fractured low permeability cores with a backpressure of 13 MPa. The nanogels presented a secondary growth pattern from three to one dimension from micrometer to nanometer size with a morphological transformation from a sphere to an irregular ellipsoid or disk shape. The phase transition temperature was 50 °C, and the phase transition pH was 10. If both or either were below these values, the hydrogel swelled; otherwise, it shrank. Plugging results show that the plugging efficiency was higher than 99%. The maximum breakthrough pressure was 19.93 MPa, and the corresponding residual pressure remained 17.64 MPa for a 10 mD core, exhibiting great plugging performance and high residual resistance after being broken through by CO2.

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On the application of silica gel for mitigating CO2 leakage in CCS projects: Rheological properties and chemical stability

Hatami

Hughes

Sun

et al. 2021

Journal of Petroleum Science and Engineering

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Near well-bore sealing in the Bečej CO2 reservoir: Field tests of a silicate based sealant

Cited by 7 publications

References 10 publications

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Thermo-/pH-Dual-Sensitive PEG/PAMAM Nanogel: Reaction Dynamics and Plugging Application of CO2 Channeling

On the application of silica gel for mitigating CO2 leakage in CCS projects: Rheological properties and chemical stability

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Near well-bore sealing in the Bečej CO2 reservoir: Field tests of a silicate based sealant

Cited by 7 publications

References 10 publications

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO2 Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO2 Capture and Storage Process

Thermo-/pH-Dual-Sensitive PEG/PAMAM Nanogel: Reaction Dynamics and Plugging Application of CO2 Channeling

On the application of silica gel for mitigating CO2 leakage in CCS projects: Rheological properties and chemical stability

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Product

Resources

About

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process