可控式大裂缝堵漏工具研制及应用
投稿时间:2021-06-29  修订日期:2021-06-29  点此下载全文
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林下斌 中国地质科学院探矿工艺研究所四川 成都 611734 611734
严君凤 中国地质科学院探矿工艺研究所四川 成都 611734 611734
蒋炳 中国地质科学院探矿工艺研究所四川 成都 611734 611734
吴金生 中国地质科学院探矿工艺研究所四川 成都 611734 611734
基金项目:中国地质调查局地质调查项目“深海钻探技术与工程支撑”(编号:DD20190587)
中文摘要:在钻井过程中出现的大裂缝或小型溶洞漏失,这些恶性漏失采用堵漏材料难以见效,利用可控式堵漏工具进行封堵是一种行之有效的堵漏手段。针对这类恶性漏失,我们设计了一种可以容易操控并能够准确将拦截袋和不同类型堵漏材料送到钻孔内漏失位置的堵漏工具。该工具能有效避免堵漏材料被水稀释或者被水流冲走,在漏失位置能形成有效封堵,从而实现对大裂缝的堵漏。
中文关键词:恶性漏失  堵漏材料  可控式堵漏工具  大裂缝
 
Development and application of the controllable large crack plugging tool
Abstract:In the process of drilling, when circulation loss occurs due to large fractures or small karst caves where plugging materials cannot work effectively, controllable plugging tools are an effective plugging method. In view of this severe circulation loss, we designed a kind of plugging tool which can be easily manipulated and can accurately deliver the interception bag and different types of plugging materials to the leakage position in the borehole. The tool can effectively prevent the plugging material from being diluted by water or washed away by water flow, and form effective plugging at the leakage position, so as to realize the plugging of large fractures.
keywords:severe loss  plugging material  controllable plugging tool  large cracks
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