Improving wellbore seal integrity in CO2 injection wells

Benge, Glen

doi:10.1016/j.egypro.2009.02.145

Cited by 25 publications

(8 citation statements)

References 30 publications

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“…The water can allow for additional dissolution of CO 2 , the continued formation of carbonic acid and thus a continuation of the reaction process (Benge, 2009) A Portland cement system can be modified in a number of ways to slow or prevent the reaction with CO 2 . The acid then reacts with the calcium hydroxide in the cement as well as the calcium silicate hydrate gels to form calcium carbonate.…”

Section: Cementing Systems For Co 2 Injection Wellsmentioning

confidence: 99%

“…Finally, research by Argonne National Labs shows ceramic based cements have promise in wellbore applications, particularly in shallow, low pressure, low temperature CO 2 injection well applications (Benge, 2009). Examples of non-Portland cements include calcium sulfoaluminate-based cements, geo-polymeric cements (alkali aluminoslicates), magnesium oxide cements and hydrocarbon-based cements.…”

Section: Non Portland Cementsmentioning

confidence: 99%

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Well Integrity Technical and Regulatory Considerations for CO2 Injection Wells

Syed

Cutler²

2010

All Days

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Geologic carbon sequestration may involve injection of large quantities of carbon dioxide (CO 2 ) into primarily deep saline aquifers for storage purposes or, where feasible, into oil and gas reservoirs for enhanced oil recovery objectives. The literature and experience from industrial analogs indicates that well-bores (active or inactive/abandoned) may represent the most likely route for leakage of injected CO 2 from the storage reservoirs. Therefore, sound CO 2 injection well design and well integrity, operation and monitoring are of critical importance in such projects. This paper presents design considerations for (1) the construction of CO 2 injection wells including down-hole tubular (casing/tubing/packer) and cements, (2) methods to verify that the wells have mechanical integrity (both internal and external) and monitoring approaches applicable to CO 2 geo-sequestration in the U.S. and a short discussion of the risks posed by abandoned wells within a storage field and the safety aspect of CO 2 wells.

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Section: Cementing Systems For Co 2 Injection Wellsmentioning

confidence: 99%

Section: Non Portland Cementsmentioning

confidence: 99%

Well Integrity Technical and Regulatory Considerations for CO2 Injection Wells

Syed

Cutler²

2010

All Days

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“…Research efforts have focused on enhancing mechanical properties of cementitious materials by reducing their porosity/permeability, lowering the concentration of substances in the formulation that reacts with CO 2 , or replacing conventional cements with smart materials (stimuli‐responsive cements) . For instance, hydrogels, superabsorbent polymers and thermoplastic block‐copolymers are promising admixtures for smart cements because of their swelling behavior that is able to heal cracks in the cement matrix.…”

Section: Introductionmentioning

confidence: 99%

Epoxy resin‐cement paste composite for wellbores: Evaluation of chemical degradation fostered carbon dioxide

et al. 2017

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Excessive carbon dioxide (CO2) environmental emission can be partially solved using carbon geological storage technologies. Up‐to‐date materials in CO2 injection wells are strongly susceptible to acidic attacks causing their irreversible damage over a long time scale. This study investigates degradation by CO2 of epoxy resin‐cement paste composites at elevated pressure (50 bar) and temperature (70°C) to mimic wellbore conditions. The effect of epoxy resins on cement carbonation was evaluated by phenolphthalein test, field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and numerical simulations. According to electronic‐structure‐based molecular dynamics simulations, the epoxy resin forms a separate phase that blocks potential reaction sites between the cement and CO2. Thanks to CO2‐phobic behavior, the resin repels CO2 and minimizes cement damage due to degradation process. The optimal content of epoxy resin in the cement paste was up to 30% w/w. The reported results provide clear guidelines for further evolution of reinforced cements for use in CO2 injection wellbores. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…One of the problems associated with this method of carbon capture and storage is the degradation of conventional Portland cement under the attack of CO 2 which ultimately can lead to CO 2 leakage from the well (Barlet-Gouèdard 2006, Barlet-Gouèdard 2007. To avoid these problems, new cementing systems free of CO 2 reactive components have been introduced (Benge 2009, Nelson 2006). Once all Ca(OH) 2 has been consumed, even calcium silicate hydrates (C-S-H phases), the main component present in hardened cement which is providing its strength, will be attacked and converted into hydrous silica (SiO 2 · n H 2 O).…”

Section: Introductionmentioning

confidence: 99%

“…CAPC consists of four main components: calcium aluminate cement (CAC), sodium polyphosphate (PP), ASTM Class F fly ash and water (Benge 2009, Sugama 2006. CAPC consists of four main components: calcium aluminate cement (CAC), sodium polyphosphate (PP), ASTM Class F fly ash and water (Benge 2009, Sugama 2006.…”

Section: Introductionmentioning

confidence: 99%

Study On Admixtures For Calcium Aluminate Phosphate Cement Useful To Seal CCS Wells

Bilic¹,

Tiemeyer²,

Plank³

2011

SPE International Symposium on Oilfield Chemistry

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Conventional Portland cement is known to degrade under the attack of CO 2 . The failure is caused by formation of CaCO 3 which in the presence of wet CO 2 can leach as calcium bicarbonate Ca(HCO 3 ) 2 . This way, channels for further ingress and migration of carbon dioxide are created. Recently, a new binder system based on calcium aluminate phosphate cement has been developed which exhibits outstanding CO 2 resistance and temperature stability up to 320 °C. Main limitation of this novel binder system is a lack of additives to retard and control the water loss from the aqueous slurry.In our study, we first present an effective retarding admixture for this cement. Comparison of four different retarders (boric acid, tartaric acid, calcium lignosulfonate and butylene triamine pentamethylene phosphonic acid) revealed that only a combination of boric and tartaric acid at the specific ratio of 2.7:1 (wt./wt.) retards hydration of this cement long enough to guarantee a pumpability time of over 6 h at a pressure of 200 bars and a temperature of 80 °C.Testing of numerous fluid loss additives showed that conventional admixtures based on polyvinyl alcohol, cellulose ether or polyethylene imine do not prevent water loss. This lead to the conclusion that neither film forming additives nor synthetic polymers which physically plug cement filtercake pores will work sufficiently in this specific cement system. Thus, polymers which control fluid loss by adsorption within the pores of the filtercake were probed. This approach proved to be successful. Application of a fluid loss additive based on acrylamide tert-butylsulfonate (ATBS) produced excellent fluid loss control, even at 80 °C. The mechanism behind this performance was found to be reduction of filter cake permeability by adsorption of the high molecular weight polymer onto the positively charged surfaces of cement hydrate phases. Interaction of this admixture with the binder and its working mechanism are presented in detail.

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Improving wellbore seal integrity in CO2 injection wells

Cited by 25 publications

References 30 publications

Well Integrity Technical and Regulatory Considerations for CO2 Injection Wells

Well Integrity Technical and Regulatory Considerations for CO2 Injection Wells

Epoxy resin‐cement paste composite for wellbores: Evaluation of chemical degradation fostered carbon dioxide

Study On Admixtures For Calcium Aluminate Phosphate Cement Useful To Seal CCS Wells

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