公开(公告)号：US20110073377A1

公开(公告)日：2011-03-31

申请号：US12570852

申请日：2009-09-30

Applicant: David L. Rickabaugh ,  Rudolf Carl Pessier ,  Mark E. Anderson ,  William A. Moss ,  Redd H. Smith

Inventor： David L. Rickabaugh ,  Rudolf Carl Pessier ,  Mark E. Anderson ,  William A. Moss ,  Redd H. Smith

IPC: E21B10/60 ,  B22D19/14 ,  B22F1/00 ,  B21K5/04

CPC classification number: E21B10/602 ,  B22D19/14 ,  C22C1/1036 ,  C22C9/00

Abstract: Earth-boring drill bits include a bit body including a blockage-resistant internal fluid passageway. The blockage-resistant internal fluid passageway includes at least one internal fluid passageway formed in the bit body and a cuttings filtering feature formed in the at least one internal fluid passageway configured to prevent at least some cuttings from flowing through the at least one internal fluid passageway. In one embodiment, the cuttings filtering feature includes at least one lateral member extending transversely across the at least one internal fluid passageway. In another embodiment, the cuttings filtering feature includes forming a central portion of the at least one internal fluid passageway with a width along a lateral axis thereof less than an average width of a fluid path extending through a nozzle disposed at least partially within the at least one internal fluid passageway. Methods of forming the blockage-resistant internal fluid passageway are also disclosed.

Abstract translation: 钻孔钻头包括具有阻塞内部流体通道的钻头体。 防堵塞的内部流体通道包括形成在钻头体中的至少一个内部流体通道和形成在至少一个内部流体通道中的切屑过滤特征，该内部流体通道构造成防止至少一些切屑流过至少一个内部流体通道 。 在一个实施例中，切屑过滤特征包括横向穿过至少一个内部流体通道延伸的至少一个横向构件。 在另一个实施例中，切屑过滤特征包括形成至少一个内部流体通道的中心部分，其宽度沿着其横向轴线小于延伸穿过喷嘴的平均宽度，喷嘴至少部分地至少设置在至少 一个内部流体通道。 还公开了形成耐阻塞内部流体通道的方法。

公开(公告)号：US08240402B2

公开(公告)日：2012-08-14

申请号：US12570852

申请日：2009-09-30

Applicant: David L. Rickabaugh ,  Rudolf Carl Pessier ,  Mark E. Anderson ,  William A. Moss ,  Redd H. Smith

Inventor： David L. Rickabaugh ,  Rudolf Carl Pessier ,  Mark E. Anderson ,  William A. Moss ,  Redd H. Smith

IPC: E21B10/18

CPC classification number: E21B10/602 ,  B22D19/14 ,  C22C1/1036 ,  C22C9/00

Abstract: Earth-boring drill bits include a bit body including a blockage-resistant internal fluid passageway. The blockage-resistant internal fluid passageway includes at least one internal fluid passageway formed in the bit body and a cuttings filtering feature formed in the at least one internal fluid passageway configured to prevent at least some cuttings from flowing through the at least one internal fluid passageway. In one embodiment, the cuttings filtering feature includes at least one lateral member extending transversely across the at least one internal fluid passageway. In another embodiment, the cuttings filtering feature includes forming a central portion of the at least one internal fluid passageway with a width along a lateral axis thereof less than an average width of a fluid path extending through a nozzle disposed at least partially within the at least one internal fluid passageway. Methods of forming the blockage-resistant internal fluid passageway are also disclosed.

Abstract translation: 钻孔钻头包括具有阻塞内部流体通道的钻头体。 防堵塞的内部流体通道包括形成在钻头体中的至少一个内部流体通道和形成在至少一个内部流体通道中的切屑过滤特征，该内部流体通道构造成防止至少一些切屑流过至少一个内部流体通道 。 在一个实施例中，切屑过滤特征包括横向穿过至少一个内部流体通道延伸的至少一个横向构件。 在另一个实施例中，切屑过滤特征包括形成至少一个内部流体通道的中心部分，其宽度沿着其横向轴线小于延伸穿过喷嘴的平均宽度，喷嘴至少部分地至少设置在至少 一个内部流体通道。 还公开了形成耐阻塞内部流体通道的方法。

公开(公告)号：US20110100714A1

公开(公告)日：2011-05-05

申请号：US12608832

申请日：2009-10-29

Applicant: William A. Moss ,  David L. Rickabaugh ,  Mark E. Anderson

Inventor： William A. Moss ,  David L. Rickabaugh ,  Mark E. Anderson

IPC: E21B10/26 ,  E21B10/62 ,  E21B7/00

CPC classification number: E21B10/26 ,  E21B10/43

Abstract: An apparatus for engaging a subterranean borehole includes a bi-center bit having backup cutting elements thereon. The bi-center bit includes a pilot bit section and a reamer bit section adjacent to the pilot bit section. The pilot bit section includes at least one primary cutting element and at least one backup cutting element rotationally trailing and laterally offset from the at least one primary cutting element. Methods of drilling a subterranean borehole include engaging a first portion of a borehole with a reamer bit section of a drill bit and simultaneously engaging a second, opposing portion of the borehole with a pilot bit section adjacent to the reamer bit section.

Abstract translation: 用于接合地下钻孔的装置包括在其上具有备用切割元件的双中心钻头。 双中心位包括导频位部分和与引导位部分相邻的扩孔器位部分。 导向钻头部分包括至少一个主切割元件和至少一个备用切割元件，该至少一个备用切割元件与所述至少一个主切割元件旋转地后退和横向地偏移。 钻探地下钻孔的方法包括将钻孔的第一部分与钻头的铰刀钻头部分接合，并且同时将钻孔的第二相对部分与邻近铰刀钻头部分的导向钻头部分接合。