发明公开
EP3042021A4 REAMER BLADES EXHIBITING AT LEAST ONE OF ENHANCED GAGE CUTTING ELEMENT BACKRAKES AND EXPOSURES AND REAMERS SO EQUIPPED
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基本信息:
- 专利标题: REAMER BLADES EXHIBITING AT LEAST ONE OF ENHANCED GAGE CUTTING ELEMENT BACKRAKES AND EXPOSURES AND REAMERS SO EQUIPPED
- 专利标题(中):REIBAHLEN MIT MINDESTENS EINEM SCHNEIDELEMENT MITERHÖHTENZINKEN UNDAUFSÄTZEN
- 申请号:EP14842378 申请日:2014-09-05
- 公开(公告)号:EP3042021A4 公开(公告)日:2017-05-31
- 发明人: MORENO MARIO II , ENTERLINE JAMES D
- 申请人: BAKER HUGHES INC
- 专利权人: BAKER HUGHES INC
- 当前专利权人: BAKER HUGHES, A GE COMPANY, LLC
- 当前专利权人地址: BAKER HUGHES, A GE COMPANY, LLC
- 优先权: US201314020353 2013-09-06
- 主分类号: E21B7/28
- IPC分类号: E21B7/28 ; E21B10/26 ; E21B10/32
摘要:
A downhole tool configured to enlarge a borehole may include at least one blade extending laterally from a central portion of the tool. The one or more blades may each include a gage portion, and cutting elements comprising substantially circular cutting faces may be affixed to each of the one or more blades. Each of the one or more cutting elements may include a cutting edge comprising an arcuate peripheral cutting face portion for contacting the borehole. Cutting faces of at least one cutting element on a gage portion of the at least one blade may exhibit a cutting face back rake angle greater than a cutting face back rake angle of cutting elements on at least one other portion of the at least one blade.
摘要(中):
构造成扩大钻孔的井下工具可以包括从工具的中央部分侧向延伸的至少一个叶片。 所述一个或多个刀片可各自包括标准部分,并且包括基本上圆形的切割面的切割元件可固定到所述一个或多个刀片中的每一个。 一个或多个切割元件中的每一个可以包括切割边缘,切割边缘包括用于接触钻孔的弓形外围切割面部分。 所述至少一个刀片的规格部分上的至少一个切割元件的切割面可以呈现比所述至少一个刀片的至少一个其他部分上的切割元件的切割面后倾角大的切割面后倾角。
IPC结构图谱:
E | 固定建筑物 |
--E21 | 土层或岩石的钻进;采矿 |
----E21B | 土层或岩石的钻进;从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |
------E21B7/00 | 钻井的特殊方法或设备 |
--------E21B7/28 | .扩大井眼;镗孔 |