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 temperature and interfacial shear strength.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0130892.g011: The relationship between adhesive curing temperature and interfacial shear strength.

Mentions: Fig 11 shows the relationship between adhesive curing temperature and interfacial shear strength. From Fig 11, the curve is steady increase and change small, which indicates that adhesive curing temperature has small influence on interfacial shear strength. The uptrend of interfacial shear strength is evident when the adhesive curing temperature is under 20°C, and it maintains steady when the adhesive curing temperature is above 20°C. So we conclude that adhesive curing temperature has less influence on the interfacial shear strength and the basic temperature of 20°C is acceptable. The controlling of temperature requires high quality of equipment, and if excessively increase the adhesive curing temperature, the economic efficiency will be impacted, so it is better to use the temperature of oilfield.


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 temperature and interfacial shear strength.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0130892.g011: The relationship between adhesive curing temperature and interfacial shear strength.
Mentions: Fig 11 shows the relationship between adhesive curing temperature and interfacial shear strength. From Fig 11, the curve is steady increase and change small, which indicates that adhesive curing temperature has small influence on interfacial shear strength. The uptrend of interfacial shear strength is evident when the adhesive curing temperature is under 20°C, and it maintains steady when the adhesive curing temperature is above 20°C. So we conclude that adhesive curing temperature has less influence on the interfacial shear strength and the basic temperature of 20°C is acceptable. The controlling of temperature requires high quality of equipment, and if excessively increase the adhesive curing temperature, the economic efficiency will be impacted, so it is better to use the temperature of oilfield.

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