MgO作为油井水泥膨胀剂的研究现状与展望

顾光伟; 冯竟竟; 刘仍光; 侯维红; 杨进波

doi:10.3969/j.issn.1001-5620.2017.06.013

MgO作为油井水泥膨胀剂的研究现状与展望

doi: 10.3969/j.issn.1001-5620.2017.06.013

1. 武汉三源特种建材有限责任公司, 湖北武汉 430000;
2. 山东农业大学水利土木工程学院, 山东泰安 271018;
3. 中国石化石油工程技术研究院, 北京 100101

详细信息

作者简介:
顾光伟,1990年生,硕士,现在主要从事油井水泥及固井外加剂的研究工作。电话15195990287;E-mail:guguangwei1020@sina.com。

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出版历程
- 收稿日期: 2017-07-26
- 刊出日期: 2017-11-30

Status Quo of Research on and Prospect of MgO as Oil Well Cement Expansion Agent

1. Wu Han Special Building Material Company Ltd., Wuhan, Hubei 430000;
2. College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Taian, Shandong 271018;
3. Sinopec Research Institute of Petroleum Engineering, Beijing 100101

摘要

摘要: 随着对稠油井、超深井等高温井开采力度的加大，CaO及钙钒石类传统油井水泥膨胀剂因其高温性能不稳定而无法满足固井需要，以MgO为主要成分的镁质油井水泥膨胀剂有望在高温井固井中得到更为广泛的应用。列举了MgO膨胀剂应用于油井水泥的国内外研究成果，从中可以得出，MgO煅烧温度须与使用温度满足一定的匹配关系；高掺量（12%） MgO可优化80℃三维受限状态的水泥石孔径并提高其抗压强度，但5%~10%掺量的MgO会降低135~150℃下加砂水泥石的抗压强度；水泥石因MgO产生的径向膨胀能够显著提高二界面胶结强度，改善封隔质量，对存在劣质泥饼的二界面胶结强度亦有增强效果。以上结果对以MgO为主要成分的高温复合型防窜剂研究及应用推广具有一定的指导意义。
- 固井 /
- MgO /
- 油井水泥 /
- 膨胀剂 /
- 防窜 /
- 胶结强度
Abstract: As petroleum production is moving forward to the production of heavy oil and oils from ultra-deep wells, conventional oil well cement expansion agents, such as CaO and ettringite are no longer able to satisfy the needs of well cementing because of their deficiency in high temperature performance. Oil well cement expansion agents with MgO as the main component, is expected to find wide application in oil well cementing. This paper listed the research findings made abroad in the application of MgO in oil well cement. From these researches it was found that there must be a matching between the calcination temperature of MgO and the operation temperature. High concentration (12%) of MgO can be used to optimize the pore sizes of set cement with 3D constrained state at 80℃ and to enhance the compressive strength of the set cement. At concentrations between 5%-10%, MgO would reduce the compressive strength of sand-contained set cement at 135℃-150℃. The existence of MgO in set cement helps improve the bonding between the interfaces between cement sheath and borehole wall because of the radial expansion of the set cement caused by MgO. The quality of sealing of the annular space is thus improved and interfaces between cement sheath and borehole wall in which mud cakes of poor quality also has its strength enhanced. This paper is of guidance in the study, application and popularization of high temperature compound anti-channeling agents with MgO as the main component.
- Well cementing /
- MgO /
- Oil well cement /
- Expansion agent /
- Anti-channeling /
- Bond strength

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参考文献(16)

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MgO作为油井水泥膨胀剂的研究现状与展望

doi: 10.3969/j.issn.1001-5620.2017.06.013

作者简介:
顾光伟,1990年生,硕士,现在主要从事油井水泥及固井外加剂的研究工作。电话15195990287;E-mail:guguangwei1020@sina.com。

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Status Quo of Research on and Prospect of MgO as Oil Well Cement Expansion Agent

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MgO作为油井水泥膨胀剂的研究现状与展望

doi: 10.3969/j.issn.1001-5620.2017.06.013

作者简介: 顾光伟,1990年生,硕士,现在主要从事油井水泥及固井外加剂的研究工作。电话15195990287;E-mail:guguangwei1020@sina.com。

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出版历程

Status Quo of Research on and Prospect of MgO as Oil Well Cement Expansion Agent

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出版历程

目录

作者简介:
顾光伟,1990年生,硕士,现在主要从事油井水泥及固井外加剂的研究工作。电话15195990287;E-mail:guguangwei1020@sina.com。