Limits...
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 adhesive curing time and interfacial shear strength.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4482754&req=5

pone.0130892.g012: The relationship between adhesive curing time and interfacial shear strength.

Mentions: Fig 12 shows that the interfacial shear strength increasing slowly as the adhesive curing time increases, and does not change when the adhesive curing time is more than 60 hours. It indicates that if only the adhesive curing time is enough and sand is fully adhered, the cementing bond quality could be better. So in order to eliminate the possible influence of adhesive curing time, we should control the time to more than 60 hours in oilfield application.


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 adhesive curing time and interfacial shear strength.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0130892.g012: The relationship between adhesive curing time and interfacial shear strength.
Mentions: Fig 12 shows that the interfacial shear strength increasing slowly as the adhesive curing time increases, and does not change when the adhesive curing time is more than 60 hours. It indicates that if only the adhesive curing time is enough and sand is fully adhered, the cementing bond quality could be better. So in order to eliminate the possible influence of adhesive curing time, we should control the time to more than 60 hours in oilfield application.

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