Degradation of well cement in HPHT acidic environment: Effects of CO2 concentration and pressure

Omosebi, Omotayo; Maheshwari, Himanshu; Ahmed, Ramadan; Shah, Subhash; Osisanya, S.O.; Hassani, Shokrollah; DeBruijn, Gunnar; Cornell, Winton; Simon, Dave

doi:10.1016/j.cemconcomp.2016.09.006

Cited by 77 publications

(34 citation statements)

References 41 publications

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“…Tricalcium silicate (C 3 S) is the most abundant component of the cement, hydrating faster than others (Nelson 1990). When water is mixed with the cement, hydration takes place and the compressive strength develops, which expressed as (MacLaren and White 2003;Omosebi et al 2016…”

Section: Cement Systems For Co 2 Sequestrationmentioning

confidence: 99%

See 1 more Smart Citation

Cement degradation in CO2 storage sites: a review on potential applications of nanomaterials

Tiong

Gholami

Rahman

2018

J Petrol Explor Prod Technol

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Carbon capture and sequestration (CCS) has been employed to reduce global warming, which is one of the critical environmental issues gained the attention of scientific and industrial communities worldwide. Once implemented successfully, CCS can store at least 5 billion tons of CO 2 per year as an effective and technologically safe method. However, there have been a few issues raised in recent years, indicating the potential leakages paths created during and after injection. One of the major issues might be the chemical interaction of supercritical CO 2 with the cement, which may lead to the partial or total loss of the cement sheath. There have been many approaches presented to improve the physical and mechanical properties of the cement against CO 2 attack such as changing the water-to-cement ratio, employing pozzolanic materials, and considering non-Portland cements. However, a limited success has been reported to the application of these approaches once implemented in a real-field condition. To date, only a few studies reported the application of nanoparticles as sophisticated additives which can reinforce oil well cements. This paper provides a review on the possible application of nanomaterials in the cement industry where physical and mechanical characteristics of the cement can be modified to have a better resistance against corrosive environments such as CO 2 storage sites. The results obtained indicated that adding 0.5 wt% of Carbon NanoTubes (CNTs) and NanoGlass Flakes (NGFs) can reinforce the thermal stability and coating characteristics of the cement which are required to increase the chance of survival in a CO 2 sequestrated site. Nanosilica can also be a good choice and added to the cement by as much as 3.0 wt% to improve pozzolanic reactivity and thermal stability as per the reports of recent studies.

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Section: Cement Systems For Co 2 Sequestrationmentioning

confidence: 99%

“…As carbonic acidic diffuses into the hydrated cement, Portlandite is attacked, as expressed in Eq. (4), at a very fast rate due to its higher reactivity (Omosebi et al 2016). This interaction brings an equilibrium to the solution:…”

Section: Portland Cement Degradation: Carbonation and Bicarbonationmentioning

confidence: 99%

Cement degradation in CO2 storage sites: a review on potential applications of nanomaterials

Tiong

Gholami

Rahman

2018

J Petrol Explor Prod Technol

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“…The process of cement production is highly energy-demanding with accompanying high environmental impact. Global cement production is the third-largest source of anthropogenic emissions of CO 2 after fossil fuels and land-use change [3] with approximate 5 -8 % estimation of the total CO 2 emissions [4][5][6][7]. Taking into consideration that global cement production has increased more than 30 times since 1950, estimated global emissions of CO 2 were 1.5 ± 0.12 Gt in 2018, cumulative global emissions were of 38.3 ± 2.4 Gt CO 2 between 1928 and 2018, 71% of which have occurred since 1990 [3], it exists a legitimate demand on the use of alternative binders with significantly decreased influence on the environment or the use of recycled cementitious materials utilized in new concrete mixes.…”

Section: Introductionmentioning

confidence: 99%

Basic Physical, Mechanical, Thermal and Hygric Properties of Concrete with Coarse Aggregates Fabricated from Recycled Concrete Pavements

et al. 2020

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Concrete production unfavourably affects the environment due to high energy demands of cement production and consumption of limited natural resources. Therefore, waste utilization in fabrication of cementitious material is beneficial and legitimate. Significant reduction of environmental impact can be secured by utilization of various types of wastes or byproducts used for a partial substitution of cement binder or aggregates. However, the use of waste materials usually leads to deterioration of material properties of the designed composites. Therefore, it is very important to thoroughly investigate important materials properties to verify performance and practical usability of the newly designed materials. In this paper, three types of concrete mixes were designed. The reference concrete involved fine and coarse natural riverbed aggregates and two other mixes were designed using both, natural and recycled aggregates represented by crushed concrete paving cobbles. Concretes were tested in terms of basic physical properties (bulk density), mechanical properties (compressive strength), thermal properties (thermal conductivity, specific heat capacity, thermal diffusivity), and hygric properties (water vapour diffusion resistance factor, water vapour sorption at 97% RH, water absorption coefficient, moisture diffusivity) and experimentally determined data were compared and discussed. It was observed that materials properties of concretes with recycled aggregates are comparable with those of the reference concrete which is a promising fact from the environmental point of view.

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“…However, there is limited reference on the investigation of wet CO 2 , brine and geopolymer cement interactions under elevated temperatures. These reactions may increase porosity and permeability and decrease compressive strength of the cement paste (Omosebi et al 2016;Ridha et al 2018a, b).…”

Section: Introductionmentioning

confidence: 99%

Impact of wet supercritical CO2 injection on fly ash geopolymer cement under elevated temperatures for well cement applications

Ridha

Setiawan

Pramana

et al. 2019

J Petrol Explor Prod Technol

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An alternative cement system created through geopolymerization of fly ash offers favorable properties such as able to resist acidic fluids and possess high compressive strength. However, the application of fly ash geopolymer as wellbore cement under carbon dioxide (CO 2) environment at elevated temperature is not well recorded in the literature. This paper characterizes the fly ash-based geopolymer cement and experimentally investigates its mechanical and microstructure changes after exposed to CO 2 under elevated temperature. Microstructure identification on the altered cement paste was conducted by the analysis of XRD and SEM. In this study, fly ash-based alkali-activated cement was made using 8 molal sodium hydroxide and sodium silicate as alkali activators. The results found that crystal-like shape identified as calcium carbonate was formed at the surface of spherical fly ash particle after carbonation formation. The strength of geopolymer cement was found not to be decreased although carbonation process was occurred. Microstructure analysis revealed that zeolite was formed during CO 2 acid exposure for geopolymer cement which contributes to the strength development. Keywords Fly ash • Oil well cement • Alkali activated • Microstructure • Wet supercritical CO 2 Abbreviations GC60 Geopolymer cement cured at 60 °C and 17.23 MPa GC130 Geopolymer cement cured at 130 °C and 24.13 MPa 96GC130w Geopolymer cement after wet CO 2 exposure at 130 °C and 24.13 MPa for 96 h 72GC60w Geopolymer cement after wet CO 2 exposure at 60 °C and 17.23 MPa for 72 h 24GC130w Geopolymer cement after wet CO 2 exposure at 130 °C and 24.13 MPa for 24 h

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Degradation of well cement in HPHT acidic environment: Effects of CO2 concentration and pressure

Cited by 77 publications

References 41 publications

Cement degradation in CO2 storage sites: a review on potential applications of nanomaterials

Cement degradation in CO2 storage sites: a review on potential applications of nanomaterials

Basic Physical, Mechanical, Thermal and Hygric Properties of Concrete with Coarse Aggregates Fabricated from Recycled Concrete Pavements

Impact of wet supercritical CO2 injection on fly ash geopolymer cement under elevated temperatures for well cement applications

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