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The Influence of Casing-Sand Adhesion on Cementing Bond Strength.

Zhao X, Guan Z, Xu M, Shi Y, Liao H, Sun J - PLoS ONE (2015)

Bottom Line: However, due to the lack of detailed study of the technique, many questions remain.The priority orders of key factors are: sand grain size, sand coverage, adhesive curing temperature and adhesive curing time.The optimal parameters recommended for application are: 1.6mm~1.9mm sand grain size, 60%~70% sand coverage, 30°C curing temperature and 60 hours curing time.

View Article: PubMed Central - PubMed

Affiliation: College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong, China.

ABSTRACT
In the petroleum industry, one of the most serious problems encountered during cementing is the failure at the bonding interface. Many measures including casing-sand adhesion have been developed to improve cementing bond strength. However, due to the lack of detailed study of the technique, many questions remain. The primary goal of this study is to investigate the influence of casing-sand adhesion on cementing bond strength, and to optimize parameters. An orthogonal experiment and a supplementary experiment were conducted. The results indicated that casing-sand adhesion can improve the cementing bond strength. The priority orders of key factors are: sand grain size, sand coverage, adhesive curing temperature and adhesive curing time. The optimal parameters recommended for application are: 1.6mm~1.9mm sand grain size, 60%~70% sand coverage, 30°C curing temperature and 60 hours curing time.

No MeSH data available.


Related in: MedlinePlus

The relationship between sand grain size and interfacial shear strength.
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pone.0130892.g009: The relationship between sand grain size and interfacial shear strength.

Mentions: Fig 9 shows the relationship between sand grain size and interfacial shear strength. From Fig 9, the interfacial shear strength reaches the maximum value at data point of 1.6mm~1.9mm, and declines as the sand grain size increases after this point. This is because sands tend to fall off when the sand grain size is too big. However, the interfacial shear strength decreases as the sand grain size decreases before the data point of 1.6mm~1.9mm, this is because sands adhered on casing does not work when the sand grain size is too small.


The Influence of Casing-Sand Adhesion on Cementing Bond Strength.

Zhao X, Guan Z, Xu M, Shi Y, Liao H, Sun J - PLoS ONE (2015)

The relationship between sand grain size and interfacial shear strength.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4482754&req=5

pone.0130892.g009: The relationship between sand grain size and interfacial shear strength.
Mentions: Fig 9 shows the relationship between sand grain size and interfacial shear strength. From Fig 9, the interfacial shear strength reaches the maximum value at data point of 1.6mm~1.9mm, and declines as the sand grain size increases after this point. This is because sands tend to fall off when the sand grain size is too big. However, the interfacial shear strength decreases as the sand grain size decreases before the data point of 1.6mm~1.9mm, this is because sands adhered on casing does not work when the sand grain size is too small.

Bottom Line: However, due to the lack of detailed study of the technique, many questions remain.The priority orders of key factors are: sand grain size, sand coverage, adhesive curing temperature and adhesive curing time.The optimal parameters recommended for application are: 1.6mm~1.9mm sand grain size, 60%~70% sand coverage, 30°C curing temperature and 60 hours curing time.

View Article: PubMed Central - PubMed

Affiliation: College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong, China.

ABSTRACT
In the petroleum industry, one of the most serious problems encountered during cementing is the failure at the bonding interface. Many measures including casing-sand adhesion have been developed to improve cementing bond strength. However, due to the lack of detailed study of the technique, many questions remain. The primary goal of this study is to investigate the influence of casing-sand adhesion on cementing bond strength, and to optimize parameters. An orthogonal experiment and a supplementary experiment were conducted. The results indicated that casing-sand adhesion can improve the cementing bond strength. The priority orders of key factors are: sand grain size, sand coverage, adhesive curing temperature and adhesive curing time. The optimal parameters recommended for application are: 1.6mm~1.9mm sand grain size, 60%~70% sand coverage, 30°C curing temperature and 60 hours curing time.

No MeSH data available.


Related in: MedlinePlus