| 天津CGSD-01地热调查井固井技术 |
| 投稿时间：2019-08-30 修订日期：2019-08-30 点此下载全文 |
| 引用本文：胡晋军,和国磊,耿志山,等.天津CGSD-01地热调查井固井技术[J].钻探工程,2020,47(1):26-30.HU Jinjun,HE Guolei,GENG Zhishan,et al. Cementing technology for Tianjin CGSD-01 geothermal survey well[J]. Drilling Engineering, 2020,47(1):26-30. |
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| 基金项目:中国地质调查局地质调查项目“京津石地热资源调查(中国地质科学院勘探技术研究所)”(编号:DD20179032)、“天津潘庄凸起构造区地热资源调查(中国地质科学院勘探技术研究所)”(编号:DD20179622) |
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| 中文摘要:CGSD-01井是天津地区的一口深层水热型地热资源调查井。针对井下漏失、水层活跃、选择性固井及长期耐高温等复杂情况，通过采用抗高温防窜水泥浆体系，优选橄榄型水泥伞，应用筛管顶部尾管注水泥和正注反挤固井工艺，综合形成一套适合该井的固井技术。通过现场应用，固井过程中未发生漏失及水窜，隔层封固可靠，为该地区深层地热井固井提供了示范。 |
| 中文关键词:天津 地热井 固井 漏失 |
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| Cementing technology for Tianjin CGSD-01 geothermal survey well |
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| Abstract:CGSD-01 well is a deep hydrothermal geothermal resource survey well in Tianjin. For complex situations such as downhole circulation loss, active aquifers, selective cementing and long-term high temperature resistance, a set of cementing technology was developed for the well with use of the high-temperature-resistant anti-channeling cement slurry system, the olive-shaped cement basket, cement slurry injection through the liner on top of the screen pipe, and combination of direct injection and top reverse squeeze. Field application indicated there was no leakage and water channeling during the cementing process, and the cementation of the isolation layer was reliable, providing a demonstration for other deep geothermal wells in the area. |
| keywords:Tianjin geothermal well cementing loss |
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