The Importance of Hydration Heat on Cement Strength Development for Deep Water Wells

2000 ◽  
Author(s):  
J. Romero ◽  
M. Loizzo
Keyword(s):  
Deep Water ◽  
Hydration Heat ◽  
Strength Development ◽  
Water Wells ◽  
Cement Strength

Controlling the early-age hydration heat release of cement paste for deep-water oil well cementing: A new composite designing approach

2021 ◽  
Vol 285 ◽  
pp. 122949
Author(s):  
Da-heng Wang ◽  
Xiao Yao ◽  
Tao Yang ◽  
Wen-rui Xiang ◽  
Ying-tao Feng ◽  
...  
Keyword(s):  
Heat Release ◽  
Cement Paste ◽  
Deep Water ◽  
Hydration Heat ◽  
Early Age ◽  
Oil Well ◽  
Early Age Hydration

Study on Early Cracking Resistance of PC Box Girder Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 1786-1792
Author(s):  
Wei Chun Zhong ◽  
Xiao Yi Zhang ◽  
Hui Zhou ◽  
Chuang Sheng Zheng
Keyword(s):  
Hydration Heat ◽  
Maximum Temperature ◽  
Strength Development ◽  
Cracking Resistance ◽  
Construction Stage ◽  
Maximum Temperature Difference ◽  
Construction Technique ◽  
Box Girder ◽  
Mixture Ratio ◽  
Girder Bridges

Early cracks of box girder are widespread during the construction stage of PC box girder bridges. The cracking resistance of a prestressed concrete continuous beam bridge was conducted from the point of construction technique. Experimental study on hydration heat and mechanical properties of box girder concrete at early age were carried out. The results shown that the casting temperature of the concrete, the peak temperature and the maximum temperature difference between inside and outside of the hydration heat were very low, which were 15.7°C, 8°C and 10.2°C, respectively. The strength development of the concrete was stable, and the mixture ratio was optimal. The concrete appearance quality was fairly good without visible cracks in the construction stage. The study reveals that the crack of girder bridges during the construction stage can be avoided by taking effective measures in the construction.

The Negative Temperature Impact on Hardening of Magnesia Composites

2016 ◽  
Vol 843 ◽  
pp. 91-95 ◽  
Author(s):  
A.V. Kiyanets
Keyword(s):  
Scientific Explanation ◽  
Negative Temperature ◽  
Strength Development ◽  
Construction Technology ◽  
Advanced Composite Materials ◽  
Magnesium Oxychloride ◽  
Magnesium Oxychloride Cement ◽  
Freezing Temperatures ◽  
Cement Strength ◽  
Oxychloride Cement

Modern economy has a strong demand for higher speed of construction and lower construction costs both achieved by using new efficient materials. Significant climate influence on the construction technology urges to make extensive investigations on hardening the construction composite (concrete and mortar) mixtures under freezing temperatures at the actual construction site. The article focuses on the use of advanced composite materials using magnesium oxychloride cement and mineral aggregates. The results of literature review on the problem are also presented. We have found that the problem of magnesia composites hardening under freezing temperatures hasn’t been thoroughly investigated. The results of laboratory study of the effect of initial magnesia concretes maturing and mortars under the conditions of freezing temperatures on the hardening process and the final strength of the material are presented. The scientific explanation of the speed of magnesium oxychloride cement strength development in concretes and mortars which have initially undergone the influence of freezing temperatures is given.

A PRACTICAL GUIDE TO EFFECTIVE DEEP-WATER FLUID SAMPLING WHILE DRILLING

2021 ◽  
Author(s):  
Matt Wandstrat ◽  
◽  
Gerard Simms ◽  
Femi Adegbola ◽  
Steve Smith ◽  
...  
Keyword(s):  
Deep Water ◽  
Risk Mitigation ◽  
Water Environment ◽  
Quality Data ◽  
Strategic Commitment ◽  
Water Wells ◽  
Practical Guidelines ◽  
Fluid Sampling

The objective of this paper is to provide a context for strategic use of fluid sampling while drilling (FSWD) in the deep-water environment. Our work is based on data collected from Gulf of Mexico wells over the last 7 years and we incorporate both operator and service company experience. In this paper we review the current FSWD technology and the quality of the fluid samples. We provide practical guidelines for executing the FSWD operation and review types of wells where FSWD has been most effective. We also discuss the role FSWD plays in the business of efficient well construction (drilling, evaluating, and completing). Strategic use of FSWD can provide time savings and operational risk mitigation. FSWD has proven to provide high quality data and fluid samples, however, an awareness of the differences between conventional fluid sampling (wireline) and sampling while-drilling is important for maximizing benefits. Additionally, long term strategic commitment to FSWD is likely to provide the largest benefits to operators. FSWD has been around for about 10 years, but how, and where, to apply the technology has not been clear to many operators. The broader industry can benefit by learning from experiences accumulated through consistent and extensive FSWD use in deep-water wells showing how the technology has progressed, and how it is used to achieve business benefits.

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