A multi-scale approach to characterize and analyze the effect of temperature and pressure on the life well integrity of oil well cements

表征和分析温度和压力对油井水泥寿命井完整性影响的多尺度方法

基本信息

批准号：
485320-2015
负责人：
Sorelli, Luca
金额：
$ 0.38万
依托单位：
Université Laval
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=665628
关键词：
multi scale approach characterize analyze

项目摘要

The oil and gas production plays a major role in the North American energy resources as shown by the number of hydrocarbon boreholes which has been increasing impressively in the last 10 years. Well cements is a critical aspect of a well for 3 reasons: (1) provide hydraulic isolation between various water, gas, and oil bearing formations within the wellbore; (2) provide adequate support for the casing (e.g., cracking, buckling prevention, etc.); (3) provide external casing corrosion protection. Well cements can have complex mix designs to withstand severe conditions in term of temperature and pressure. The physical and chemical behaviour of well cements changes significantly at high temperature and pressure. Furthermore, temperature and pressure affect the mechanical properties (e.g., viscosity and toughness) which govern the risk of cracking. Unfortunately, the data available in open literature on the effect of temperature and pressure on the behaviour of oil well cements is quite limited. By bringing together international experts, the proposed research project will employ an innovative and comprehensive approach based on multi-scale techniques to achieve the following objectives: **(1) To characterize the effect of temperature and pressure on the behaviour of well cements; **(2) To better understand the effect of temperatures and pressures on the durability of well cements employed in Canada;**(3) To develop an engineering model for assessing the long term durability of well cement sheaths; **(4) To set-up a new test methodology for automatically characterizing mechanical and chemical properties of the microstructure of a cement paste. **By improving the current knowledge on oil well cements, the project will: (i) advance the current practise for well cement sheaths; (ii) reduce the risk of water contamination; (iii) improve the preservation of the Canadian environment and resources.******

石油和天然气的产量在北美能源资源中起着重要作用，如烃钻孔的数量所示，在过去的10年中一直在令人印象深刻的增长。井水泥是一个井的关键方面，原因有3个：（1）在井眼内提供各种水，气体和油轴承形成之间的液压分离；（2）为套管提供足够的支持（例如，破裂，预防屈曲等）；（3）提供外壳腐蚀保护。井水泥可以具有复杂的混合设计，以承受温度和压力的严重条件。井水泥的物理和化学行为在高温和压力下发生了显着变化。此外，温度和压力会影响控制破裂风险的机械性能（例如粘度和韧性）。不幸的是，开放文献中有关温度和压力对油井水泥行为的影响的数据非常有限。通过汇集国际专家，该拟议的研究项目将采用基于多尺度技术的创新和全面的方法来实现以下目标：**（1）表征温度和压力对井水泥行为的影响； **（2）更好地理解温度和压力对加拿大使用井水泥耐用性的影响； **（3）开发一种工程模型来评估井水泥鞘的长期耐用性； **（4）设置一种新的测试方法，以自动表征水泥糊的微观结构的机械和化学特性。 **通过提高当前关于油井水泥的知识，该项目将：（i）推进当前的水泥鞘; （ii）降低水污染的风险；（iii）改善加拿大环境和资源的保存。******