公开(公告)号：WO2009018427A1

公开(公告)日：2009-02-05

申请号：PCT/US2008/071733

申请日：2008-07-31

Applicant: BAKER HUGHES INCORPORATED ,  LYONS, Nicholas, J. ,  EASON, Jimmy, W. ,  SMITH, Redd, H. ,  STEVENS, John, H.

Inventor： LYONS, Nicholas, J. ,  EASON, Jimmy, W. ,  SMITH, Redd, H. ,  STEVENS, John, H.

IPC: B22F7/06 ,  E21B10/567

CPC classification number: E21B10/567 ,  B22F7/062 ,  B22F2005/001 ,  B22F2005/002 ,  Y10T428/12229 ,  Y10T428/12493 ,  Y10T428/12896 ,  Y10T428/12944

Abstract: Methods for forming earth-boring tools include providing a metal or metal alloy bonding agent at an interface between a first element and a second element and sintering the first element, the second element, and the boding agent to form a bond between the first element and the second element at the interface. The methods may be used, for example, to bond together portions of a body of an earth-boring tool (which may facilitate, for example, the formation of cutting element pockets) or to bond cutting elements to a body of an earth-boring tool (e.g., a bit body of a fixed-cutter earth-boring drill bit or a cone of a roller cone earth-boring drill bit). At least partially formed earth-boring tools include a metal or metal alloy bonding agent at an interface between two or more elements, at least one of which may comprise a green or brown structure.

Abstract translation: 用于形成钻孔工具的方法包括在第一元件和第二元件之间的界面处提供金属或金属合金粘合剂，并烧结第一元件，第二元件和引导剂以形成第一元件和 接口的第二个元素。 这些方法可以用于例如将钻孔工具的主体的部分（其可以促进例如切割元件凹坑的形成）或将切割元件结合到钻孔的主体上 工具（例如，固定刀具钻孔钻头的一个主体或滚子锥形钻孔钻头的锥体）。 至少部分形成的钻孔工具在两个或更多个元件之间的界面处包括金属或金属合金粘合剂，其中至少一个可以包括绿色或棕色结构。

公开(公告)号：WO2008073308B1

公开(公告)日：2008-09-25

申请号：PCT/US2007025099

申请日：2007-12-07

Applicant: BAKER HUGHES INC ,  SMITH REDD H ,  STEVENS JOHN H

Inventor： SMITH REDD H ,  STEVENS JOHN H

IPC: B22F7/00 ,  B22F3/12 ,  E21B10/00 ,  E21B10/55

CPC classification number: E21B10/55 ,  B22F2998/00 ,  C22C1/1036 ,  C22C2204/00 ,  E21B10/00 ,  C22C29/08

Abstract: Displacement members (68,100,110,120,124) for use in forming a bit body of an earth-boring rotary drill bit include a body having an exterior surface, at least a portion of which is configured to define at least one surface of the bit body as the bit body is formed around the displacement member. In some embodiments, the body may be hollow and/or porous. Methods for forming eai-th-boring rotary drill, bits include positioning such a displacement member in a mold (62,150) and forming a bit body around the displacement member in the mold. Additional methods include pressing a plurality of particles to form a body, forming at least one recess in the body, positioning such a displacement member in the recess, and sintering the body to form a bit body.

Abstract translation: 用于形成钻地旋转钻头的钻头本体的移位构件（68,100,110,120,124）包括具有外表面的本体，该外表面的至少一部分构造成限定钻头本体的至少一个表面作为钻头本体 围绕位移构件形成。 在一些实施例中，主体可以是中空的和/或多孔的。 用于形成钻进旋转钻头的方法包括将这样的位移构件定位在模具（62,150）中并且围绕模具中的位移构件形成钻头体。 另外的方法包括压制多个颗粒以形成本体，在本体中形成至少一个凹部，将这种位移部件定位在凹部中，并烧结本体以形成钻头本体。

公开(公告)号：WO2008073308A2

公开(公告)日：2008-06-19

申请号：PCT/US2007/025099

申请日：2007-12-07

Applicant: BAKER HUGHES INCORPORATED ,  SMITH, Redd, H. ,  STEVENS, John, H.

Inventor： SMITH, Redd, H. ,  STEVENS, John, H.

IPC: B22F7/00 ,  B22F3/12 ,  E21B10/00 ,  E21B10/55

CPC classification number: E21B10/55 ,  B22F2998/00 ,  C22C1/1036 ,  C22C2204/00 ,  E21B10/00 ,  C22C29/08

Abstract: Displacement members for use in forming a bit body of an earth-boring rotary drill bit include a body having an exterior surface, at least a portion of which is configured to define at least one surface of the bit body as the bit body is formed around the displacement member. In some embodiments, the body may be hollow and/or porous. Methods for forming earth-boring rotary drill bits include positioning such a displacement member in a mold and forming a bit body around the displacement member in the mold. Additional methods include pressing a plurality of particles to form a body, forming at least one recess in the body, positioning such a displacement member in the recess, and sintering the body to form a bit body.

Abstract translation: 用于形成钻头旋转钻头的位体的位移构件包括具有外表面的主体，其至少一部分构造成在钻头体周围形成时限定钻头体的至少一个表面 位移构件。 在一些实施例中，主体可以是中空的和/或多孔的。 用于形成钻孔旋转钻头的方法包括将这种位移构件定位在模具中并且在模具中的位移构件周围形成钻头体。 附加方法包括按压多个颗粒以形成主体，在主体中形成至少一个凹部，将这种位移构件定位在凹部中，并且烧结体以形成钻头体。

公开(公告)号：WO2008010960A1

公开(公告)日：2008-01-24

申请号：PCT/US2007/016007

申请日：2007-07-13

Applicant: BAKER HUGHES INCORPORATED ,  SMITH, Redd, H. ,  BURGESS, Trevor ,  EASON, Jimmy, W.

Inventor： SMITH, Redd, H. ,  BURGESS, Trevor ,  EASON, Jimmy, W.

IPC: E21B10/50

CPC classification number: E21B10/50 ,  E21B10/46

Abstract: An earth-boring bit (11) has a steel body (13) and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone (21) and cutting elements (35) are formed of cemented tungsten carbide. The cone may be manufactured by applying pressure to a mixture of hard particles and metal alloy powder to form a billet, then machining the billet to a desired over-sized conical shaped product. Then the conical-shaped product is liquid-phase sintered to a desired density, which causes shrinking to the desired final shape.

Abstract translation: 钻头（11）具有钢体（13）和用于可旋转地支撑锥体的支承销。 锥体具有包含一排切割元件的外表面。 锥体（21）和切割元件（35）由粘结碳化钨形成。 可以通过向硬颗粒和金属合金粉末的混合物施加压力以形成坯料，然后将坯料机加工成期望的大尺寸锥形产品来制造锥体。 然后，圆锥形产品被液相烧结至所需的密度，这导致收缩到期望的最终形状。