| 一种有机缓凝剂的制备及其应用 |
| 投稿时间：2023-10-14 修订日期：2024-01-17 点此下载全文 |
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| 中文摘要:油气井漏失是钻井中常见问题,通常利用水泥进行封堵。然而,水泥堵漏经常因为凝固过快,导致钻具被固化在井底或钻具被封堵现象。针对上述问题,本文制备了一种水泥用缓凝剂。红外和热重结果表明,缓凝剂的制备达到了理想效果,抗温性能为450℃。高温高压稠化仪测试结果显示,制备的缓凝剂在120℃下具有足够的缓凝效果。通过使用六速粘度计,稠化仪和无侧限抗压仪,研究了缓凝剂对低密度水泥浆液常规性能影响,实验结果证实,不同浓度的缓凝剂对水泥的流变性和抗压强度不产生显著影响,温度的升高会缩短水泥浆液的稠化时间。制备的缓凝剂与低密度水泥一同进行了现场应用,现场结果证明,该缓凝剂效果优异,满足现场施工需求,值得进一步推广应用。 |
| 中文关键词:井漏 水泥浆液 缓凝剂 堵漏 现场应用 |
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| Preparation and Application of an Organic Retarder |
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| Abstract:Oil and gas well leakage is a common problem in drilling, usually sealed with cement. However, cement plugging often results in drilling tools being solidified at the bottom of the well or being blocked due to rapid solidification. In response to the above issues, this article has prepared a cement retarder. The infrared and thermogravimetric results indicate that the preparation of the retarder has achieved ideal results, with a temperature resistance of 450 ℃. The test results of the high-temperature and high-pressure thickener show that the prepared retarder has sufficient retarding effect at 120 ℃. By using a six speed viscometer, thickener, and unconfined compression tester, the effect of retarders on the conventional performance of low-density cement slurry was studied. The experimental results confirmed that different concentrations of retarders did not have a significant impact on the rheological properties and compressive strength of cement, and an increase in temperature would shorten the thickening time of cement slurry. The prepared retarder has been applied on site together with low-density cement, and the on-site results have shown that the retarder has excellent effects and meets the needs of on-site construction, which is worthy of further promotion and application. |
| keywords:lost circulation cement slurry, retarder lost circulation field application |
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