CN205503068U - 一种钻磨修井用复合五翼磨鞋 - Google Patents
一种钻磨修井用复合五翼磨鞋 Download PDFInfo
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Abstract
本实用新型涉及石油和天然气钻井技术领域,尤其涉及一种钻磨修井用复合五翼磨鞋。其包括磨鞋本体,所述磨鞋本体自上到下依次包括连为一体的螺纹端、柱体及钻磨体,其特征在于,所述螺纹端、柱体及钻磨体的直径依次从小到大呈台阶结构,所述钻磨体的尾端设有磨鞋端面,所述磨鞋端面上设有喷水孔,所述磨鞋本体中心设有上端开口的盲孔,所述喷水孔与盲孔相连通;所述钻磨体的外壁设有沿轴向均布的五个“V”型水槽,所述钻磨体的尾端外圆上还设有保径,所述保径上设有磨铣硬质合金;所述柱体与钻磨体的连接处设有过渡倒角,所述过渡倒角上设有碎块硬质合金。有益效果是:增强了磨铣效果,同时延长了磨鞋寿命,降低了上提管串遇卡的风险。
Description
技术领域
本实用新型涉及石油和天然气钻井技术领域,尤其涉及一种钻磨修井用复合五翼磨鞋。
背景技术
在石油和天然气的钻井、采油过程中,遇到各种复杂井况事故,对石油天然气的开采工程都会造成较大损失,为了保证生产顺利进行,需要用到高效的修井工具对井筒进行修复,以便使钻杆能顺利通过,而不至于半途而废。修井作业中大部分事故可以利用磨铣作业完成,磨鞋的性能成为制约修井作业成功率的关键。
目前磨铣用磨鞋主要采用四水眼直孔设计,其与钻杆、油管连接使用。磨鞋焊接的合金颗粒主要以碎块合金为主,未针对井下具体落鱼情况进行合金颗粒优选,焊接形式为平底或凹底形式。
实用新型内容
本实用新型针对上述现有技术的不足,提供一种高效并便于进退的钻磨修井用复合五翼磨鞋。
本实用新型解决上述技术问题的技术方案如下:一种钻磨修井用复合五翼磨鞋,包括磨鞋本体,所述磨鞋本体自上到下依次包括连为一体的螺纹端、柱体及钻磨体,其特征在于,所述螺纹端、柱体及钻磨体的直径依次从小到大呈台阶结构,所述钻磨体的尾端设有磨鞋端面,所述磨鞋端面上设有喷水孔,所述磨鞋本体中心设有上端开口的盲孔,所述喷水孔与所述盲孔相连通;所述钻磨体的外壁设有沿轴向均布的五个“V”型水槽,所述钻磨体的尾端外圆上还设有保径,所述保径上设有磨铣硬质合金;所述五个“V”型水槽形成了五翼结构。
所述柱体与所述钻磨体的连接处设有过渡倒角,所述过渡倒角上设有碎块硬质合金。
本实用新型的有益效果是:由于设置保径保证了磨铣硬质合金在钻磨体外围的合金密度,增强了磨铣效果,同时延长了磨鞋寿命;采用“V”型水槽在保证磨铣面积的前提下,增大了环空返流的空间,降低了环空摩阻,能够更好的将磨削碎粒返出;另外所述过渡倒角上设有碎块硬质合金,当磨鞋后退时,可以将落在钻磨体上的碎块及时破除,使得磨鞋进退自如,使得在上提磨鞋过程中硬质合金对潜在的障碍物起到磨削效果,降低了上提管串遇卡的风险。
在上述技术方案的基础上,本实用新型还可以做如下改进。
进一步,所述“V”型水槽为直角槽,包括短边平面和长边平面,所述短边平面的延长面与所述钻磨体的轴线相重合,所述短边平面上设有切削硬质合金。
采用上述进一步方案的有益效果是,所述短边平面的延长面与所述钻磨体的轴线相重合,保证了磨鞋在切削时获得最大的切削力,提升切削效果;所述短边平面上设有切削硬质合金,可根据落物类型选择切削硬质合金颗粒。
进一步,所述喷水孔与所述“V”型水槽相对应的设有5个,所述喷水孔的轴线与所述钻磨体的轴向夹角为20~30°;所述喷水孔的直径为10~13毫米。
采用上述进一步方案的有益效果是,与传统的四水孔结构相比,更具有切削力度;喷水孔的角度设计减少了涡流损失,增强了冲洗效果。
进一步,所述柱体的外径与所述钻杆的内径相适配。
采用上述进一步方案的有益效果是,便于与钻杆配套连接。
进一步,所述磨鞋端面为内凹球面结构,所述球面半径为300~400毫米。
采用上述进一步方案的有益效果是,磨鞋端面为凹面设计,便于焊接磨铣硬质合金时调整端面的形式。
进一步,所述切削硬质合金的形状为圆柱状或多边形状,所述切削硬质合金焊接有多层。
采用上述进一步方案的有益效果是,多层耐磨层有利于增加磨鞋寿命。
进一步,所述磨铣硬质合金为锥形、H形或/和菱形。
采用上述进一步方案的有益效果是,不同的合金形状选择可以组合出更好的磨削效果。
进一步,所述柱体上设有标记环。
采用上述进一步方案的有益效果是,利用标记环记录磨鞋的具体信息。
本实用新型不仅在所述保径上设有磨铣硬质合金用于磨铣井筒,而且在所述过渡倒角上设有碎块硬质合金,使得磨鞋进退自如;另外还在所述短边平面上设有切削硬质合金,以提升切削效果。相对于现有技术,其具有多种复合磨削功能。
附图说明
图1为本实用新型的外形结构示意图;
图2为图1的端面视图;
图3为图1的剖视结构示意图;
图4为图3的A-A向剖视图。
1、螺纹端;2、标记环;3、柱体;4、过渡倒角;5、钻磨体;6、“V”型水槽;6-1、长边平面;6-2、短边平面;7、保径;8、喷水孔;9、磨鞋端面;10、碎块硬质合金;11、盲孔;12、磨铣硬质合金;13、切削硬质合金。
具体实施方式
以下结合附图对本实用新型的原理和特征进行描述,所举实例只用于解释本实用新型,并非用于限定本实用新型的范围。
如图1到4所示,一种钻磨修井用复合五翼磨鞋,包括磨鞋本体,所述磨鞋本体自上到下依次包括连为一体的螺纹端1、柱体3及钻磨体5,其特征在于,所述螺纹端1、柱体3及钻磨体5的直径依次从小到大呈台阶结构,所述钻磨体5的尾端设有磨鞋端面9,所述磨鞋端面上设有喷水孔8,所述磨鞋本体中心设有上端开口的盲孔11,所述喷水孔8与所述盲孔11相连通;所述钻磨体5的外壁设有沿轴向均布的五个“V”型水槽6,所述钻磨体5的尾端外圆上还设有保径7,所述保径7上设有磨铣硬质合金12;
所述柱体3与所述钻磨体5的连接处设有过渡倒角4,所述过渡倒角4上设有碎块硬质合金10。
所述“V”型水槽6为直角槽,包括短边平面6-2和长边平面6-1,所述短边平面6-2的延长面与所述钻磨体5的轴线相重合,所述短边平面6-2上设有切削硬质合金13。
所述喷水孔8与所述“V”型水槽6相对应的设有5个,所述喷水孔8的轴线与所述钻磨体5的轴向夹角为20~30°;所述喷水孔8的直径为10~13毫米。
所述柱体3的外径与所述钻杆的内径相适配。
所述磨鞋端面为内凹球面结构,所述球面半径为300~400毫米。
所述切削硬质合金13的形状为圆柱状或多边形状,所述切削硬质合金13焊接有多层。
所述磨铣硬质合金12为锥形、H形或/和菱形。
所述柱体3上设有标记环2。
以上所述仅为本实用新型的较佳实施例,并不用以限制本实用新型,凡在本实用新型的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本实用新型的保护范围之内。
Claims (8)
1.一种钻磨修井用复合五翼磨鞋,包括磨鞋本体,所述磨鞋本体自上到下依次包括连为一体的螺纹端、柱体及钻磨体,其特征在于,所述螺纹端、柱体及钻磨体的直径依次从小到大呈台阶结构,所述钻磨体的尾端设有磨鞋端面,所述磨鞋端面上设有喷水孔,所述磨鞋本体中心设有上端开口的盲孔,所述喷水孔与所述盲孔相连通;所述钻磨体的外壁设有沿轴向均布的五个“V”型水槽,所述钻磨体的尾端外圆上还设有保径,所述保径上设有磨铣硬质合金;
所述柱体与所述钻磨体的连接处设有过渡倒角,所述过渡倒角上设有碎块硬质合金。
2.根据权利要求1所述的钻磨修井用复合五翼磨鞋,其特征在于,所述“V”型水槽为直角槽,包括短边平面和长边平面,所述短边平面的延长面与所述钻磨体的轴线相重合,所述短边平面上设有切削硬质合金。
3.根据权利要求1或2所述的钻磨修井用复合五翼磨鞋,其特征在于,所述喷水孔与所述“V”型水槽相对应的设有5个,所述喷水孔的轴线与所述钻磨体的轴向夹角为20~30°;所述喷水孔的直径为10~13毫米。
4.根据权利要求1所述的钻磨修井用复合五翼磨鞋,其特征在于,所述柱体的外径与钻杆的内径相适配。
5.根据权利要求1所述的钻磨修井用复合五翼磨鞋,其特征在于,所述磨鞋端面为内凹球面结构,所述球面半径为300~400毫米。
6.根据权利要求2所述的钻磨修井用复合五翼磨鞋,其特征在于,所述切削硬质合金的形状为圆柱状或多边形状,所述切削硬质合金焊接有多层。
7.根据权利要求1所述的钻磨修井用复合五翼磨鞋,其特征在于,所 述磨铣硬质合金为锥形、H形或/和菱形。
8.根据权利要求1所述的钻磨修井用复合五翼磨鞋,其特征在于,所述柱体上设有标记环。
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