Wellbore cleaning tool used in well drilling

一种钻井用井眼清洁工具

Abstract

The utility model relates to a wellbore cleaning tool used in well drilling in the petroleum oil, natural gas and geological well drilling, which is especially applicable to the drilling of horizontal wells, high-deviated wells, large-displacement wells, and wells with complex structures. The wellbore cleaning tool used in well drilling consists of male buckle, a body, a lower transition trough, turbulent flow arrises, an over-current trough, an upper transition trough and a female buckle, wherein the body is internally provided with a through hole, and provided with the turbulent flow arris, the over-current trough, the upper transition trough and the lower transition trough; the turbulent flow arrises can be straight arrises, inclined straight arrises, V-shaped arrises, spiral arrises or fan-shaped arrises, wherein the annular troughs can be arranged in the middle of the straight arrises and the inclined straight arrises; and the number of the turbulent flow arrises is 3 to 6. The wellbore cleaning tool has the functions of destroying cuttings beds, increasing flow velocity of local drilling fluid and guiding, thus enabling the cuttings to be smoothly returned to the ground along with the drilling liquid, effectively improving the cuttings suspension state in the well drilling process to clean a wellbore, and preventing the accidents of jamming and stopping of drilling tools caused by the cuttings beds formed at the bottom of the wellbore due to the sedimentation of cuttings in the well drilling process.
本实用新型涉及用于石油、天然气和地质钻井的一种钻井用井眼清洁工具,尤其适用于钻水平井、大斜度井、大位移井、复杂结构井。本实用新型一种钻井用井眼清洁工具,包括公扣、本体、下过渡槽、扰流棱、过流槽、上过渡槽和母扣构成。所述本体内部开有贯通孔,本体上加工有扰流棱、过流槽、上过渡槽和下过渡槽;所述扰流棱形状为直棱、斜直棱、V形棱、螺旋棱或者扇形棱,其中直棱和斜直棱可在中部加工有环形槽;扰流棱条数为3~6条。本实用新型具有破坏岩屑床,增加钻井液局部流速及导向的作用,使岩屑能随着钻井液顺利返回地面,有效改善钻井过程岩屑悬浮状态,清洁井眼,防止钻井过程中因岩屑沉积在井眼底部形成岩屑床而造成卡钻、停钻事故。

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Cited By (7)

    Publication numberPublication dateAssigneeTitle
    CN-103775010-AMay 07, 2014西南石油大学Borehole cleaning tool for horizontal-section gas drilling
    CN-103775010-BMarch 23, 2016西南石油大学一种水平段气体钻井用井眼净化工具
    CN-104487650-BMarch 15, 2017奥德菲尔欧洲服务有限公司可安装在钻柱上的井眼清洁装置和方法
    CN-104653130-AMay 27, 2015东北石油大学一体式叶片液力-磁传动井眼清洁工具
    CN-104653130-BAugust 31, 2016东北石油大学一体式叶片液力-磁传动井眼清洁工具
    CN-104675346-AJune 03, 2015东北石油大学分体式叶片液力-磁传动井眼清洁工具
    CN-104675346-BMarch 30, 2016东北石油大学分体式叶片液力-磁传动井眼清洁工具