Study on the corrosion change law and prediction model of cement stone in oil wells with CO2 corrosion in ultra-high-temperature acid gas wells

Zhang, Yihang; Xu, Mengque; Song, Jianjian; Wang, Chunli; Wang, Xiaoliang; Hamad, Bahati Adnan

doi:10.1016/j.conbuildmat.2021.125879

Cited by 18 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to the variation of surface materials, the content of silica increases after corrosion, which mainly comes from the carbonation corrosion of cement stone; calcium carbonate shows two different crystal forms because the two hydration products of cement, C-S-H, and Ca(OH) 2 , react with carbon dioxide to form calcium carbonate crystals with different crystal forms. 29 The specific reaction equation is shown below: 29 …”

Section: Resultsmentioning

confidence: 99%

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO₂ pressure

Wang,

Wen,

Zhang

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

View full text Add to dashboard Cite

This study investigates the corrosion state of the floating bead low-density cement stone/P110 steel system in simulated CO2-saturated formation water under high and atmospheric CO2 pressure. Results show that the resistance of the cement stone reaches a maximum value at 28 days and then decreases. The corrosion rate of P110 steel under high pressure is greater than that under atmospheric pressure. There is a certain gap and accumulation of corrosion products between the cement stone and the steel. Additionally, the maximum gap size and corrosion product thickness reach 27.5 and 67.69 μm, respectively. The composition of the corrosion products on the steel surface is mainly FeCO3, and the presence of the iron oxides are caused by oxidation. The corrosion products of the cement are also confirmed to be CaCO3 and a small amount of SiO2.

show abstract

Section: Resultsmentioning

confidence: 99%

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO₂ pressure

Wang,

Wen,

Zhang

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

View full text Add to dashboard Cite

show abstract

“…Simultaneously, the surface of the b 1 , c 1 , and d 1 cement composite matrix showed signs of corrosion carbonization, and, over time, loose free calcium silicate was progressively created [37,38]. As the corrosion deepens, it was converted into tiny carbonization product CaCO 3 particles [39], which caused the strength of the cement composite to rapidly decrease. As compared to the blank cement, the latex cement composite produced far less loose hydrated calcium silicate and carbonization products, and, even after 60 days of corrosion, microcracks will not form on the matrix surface, which suggested that the CO 2 -resistant toughened latex can effectively slow down CO 2 corrosion and increase the cement composite's resistance to corrosion.…”

Section: Effect Of Latex On Microstructure Of Cementmentioning

confidence: 99%

Preparation and Application of CO2-Resistant Latex in Shale Reservoir Cementing

Jiang,

Zheng,

Zhu

et al. 2024

Processes

View full text Add to dashboard Cite

With the application of CO2 fracturing, CO2 huff and puff, CO2 flooding, and other stimulation technologies in shale reservoirs, a large amount of CO2 remained in the formation, which also lead to the serious corrosion problem of CO2 in shale reservoirs. In order to solve the harm caused by CO2 corrosion, it is necessary to curb CO2 corrosion from the cementing cement ring to ensure the long-term stable exploitation of shale oil. Therefore, a new latex was created using liquid polybutadiene, styrene, 2-acrylamide-2-methylpropanesulfonic acid, and maleic anhydride to increase the cement ring’s resistance to CO2 corrosion. The latex’s structure and characteristics were then confirmed using infrared, particle size analyzer, thermogravimetric analysis, and transmission electron microscopy. The major size distribution of latex is between 160 and 220 nm, with a solid content of 32.2% and an apparent viscosity of 36.8 mPa·s. And it had good physical properties and stability. Latex can effectively improve the properties of cement slurry and cement composite. When the amount of latex was 8%, the fluidity index of cement slurry was 0.76, the consistency index was 0.5363, the free liquid content was only 0.1%, and the water loss was reduced to 108 mL. At the same time, latex has a certain retarding ability. With 8% latex, the cement slurry has a specific retarding ability, is 0.76 and 0.5363, has a free liquid content of just 0.1%, and reduces water loss to 108 mL. Moreover, latex had certain retarding properties. The compressive strength and flexural strength of the latex cement composite were increased by 13.47% and 33.64% compared with the blank cement composite. A long-term CO2 corrosion experiment also showed that latex significantly increased the cement composite’s resilience to corrosion, lowering the blank cement composite’s growth rate of permeability from 46.88% to 19.41% and its compressive strength drop rate from 27.39% to 11.74%. Through the use of XRD and SEM, the latex’s anti-corrosion mechanism, hydration products, and microstructure were examined. In addition to forming a continuous network structure with the hydrated calcium silicate and other gels, the latex can form a latex film to attach and fill the hydration products. This slows down the rate of CO2 corrosion of the hydration products, enhancing the cement composite’s resistance to corrosion. CO2-resistant toughened latex can effectively solve the CO2 corrosion problem of the cementing cement ring in shale reservoirs.

show abstract

“…The dissolution of Ca(OH) 2 and the decalcification of C-S-H cause the loss of Ca 2+ in the cement paste matrix, which will lead to the decline of the mechanical properties of the cement paste and the increase of porosity/permeability. Although this process is very slow, the presence of acidic corrosion media in the solution will accelerate this process (Zhang et al, 2022).…”

Section: Corrosion Mechanism Of Cement Paste 31 Dissolution and Decal...mentioning

confidence: 99%

Application of anticorrosive materials in cement slurry: Progress and prospect

et al. 2022

Self Cite

View full text Add to dashboard Cite

During gas well cementing operation, the erosion of acidic formation corrosive medium will destroy the cementation between the cement slurry and the sidewall in the well sealing section, reduce the mechanical properties of the cement paste, cause problems such as sidewall collapse and casing damage, seriously endanger the normal exploitation of oil and gas resources, and cause major safety accidents. Therefore, improving the corrosion resistance of cement paste is the key to ensuring long-term stable cementing of high-temperature sour gas wells. This paper summarizes the influencing factors, corrosion mechanism, corrosion test methods and research status of anti-corrosion oil well cement additives, discusses the advantages and disadvantages of each anti-corrosion additive, summarizes the latest progress and challenges of anti-corrosion oil well cement, and aims to provide some reference for researchers in related fields.

show abstract

Study on the corrosion change law and prediction model of cement stone in oil wells with CO2 corrosion in ultra-high-temperature acid gas wells

Cited by 18 publications

References 14 publications

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO₂ pressure

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO₂ pressure

Preparation and Application of CO2-Resistant Latex in Shale Reservoir Cementing

Application of anticorrosive materials in cement slurry: Progress and prospect

Contact Info

Product

Resources

About

Study on the corrosion change law and prediction model of cement stone in oil wells with CO2 corrosion in ultra-high-temperature acid gas wells

Cited by 18 publications

References 14 publications

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO2 pressure

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO2 pressure

Preparation and Application of CO2-Resistant Latex in Shale Reservoir Cementing

Application of anticorrosive materials in cement slurry: Progress and prospect

Contact Info

Product

Resources

About

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO₂ pressure

Research on the corrosion behavior of floating bead low-density cement stone/P110 steel system under different CO₂ pressure