公开(公告)号：US08505634B2

公开(公告)日：2013-08-13

申请号：US12793396

申请日：2010-06-03

Applicant: Nicholas J. Lyons ,  Danny E. Scott ,  Rudolf Carl Pessier ,  David Gavia ,  Juan Miguel Bilen

Inventor： Nicholas J. Lyons ,  Danny E. Scott ,  Rudolf Carl Pessier ,  David Gavia ,  Juan Miguel Bilen

IPC: E21B10/43

CPC classification number: E21B10/55 ,  E21B10/43 ,  E21B10/54

Abstract: Earth-boring tools include combinations of shearing cutting elements and gouging cutting elements on a blade of the earth-boring tools. In some embodiments, a gouging cutting element may be disposed adjacent to a shearing cutting element on a blade of an earth-boring tool. Methods of forming earth-boring tools include providing such combination of at least one shearing cutting element and at least one gouging cutting element on a blade of an earth-boring tool.

Abstract translation: 钻孔工具包括剪切元件和钻孔刀具刀片上的气刨切割元件的组合。 在一些实施例中，气蚀切割元件可以布置成与钻孔工具的刀片上的剪切切割元件相邻。 形成钻孔工具的方法包括在钻孔工具的刀片上提供至少一个剪切切割元件和至少一个气刨切割元件的组合。

公开(公告)号：US20080179108A1

公开(公告)日：2008-07-31

申请号：US12020492

申请日：2008-01-25

Applicant: Eric E. McClain ,  David Gavia ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Michael L. Doster

Inventor： Eric E. McClain ,  David Gavia ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Michael L. Doster

IPC: E21B10/43

CPC classification number: E21B10/55 ,  E21B10/43

Abstract: A rotary drag bit includes a primary cutter row comprising at least one primary cutter, and at least two additional cutters configured relative to one another. In one embodiment, the cutters are backup cutters of a cutter group located in respective first and second trailing cutter rows, oriented relative to one another, and positioned to substantially follow the at least one primary cutter. The rotary drag bit life is extended by the backup cutter group, making the bit more durable and extending the life of the cutters. In other of the embodiments, the cutters are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Still other embodiments of rotary drag bits include backup cutter configurations having different backrake angles and siderake angles, including methods therefor.

Abstract translation: 旋转牵引钻头包括主切割器行，其包括至少一个主切割器，以及至少两个相对于彼此配置的附加切割器。 在一个实施例中，切割器是位于相应的第一和第二拖尾切割器行中的切割器组的备用切割器，其相对于彼此定向并且被定位成基本上跟随至少一个主切割器。 旋转拖曳钻头的寿命由后备刀具组延长，使钻头更耐用，延长刀具的使用寿命。 在其他实施例中，切割器被配置为选择性地接合正在钻孔的地下地层材料，提供改善的钻头寿命并减少切割器上的应力。 旋转拖曳钻头的其他实施例包括具有不同的反向角度和擒挡角度的后备刀具配置，包括其方法。

公开(公告)号：US08794356B2

公开(公告)日：2014-08-05

申请号：US13022288

申请日：2011-02-07

Applicant: Nicholas J. Lyons ,  Rudolf Carl Pessier ,  Danny E. Scott ,  David Gavia ,  Juan Miguel Bilen ,  Anthony A. DiGiovanni

Inventor： Nicholas J. Lyons ,  Rudolf Carl Pessier ,  Danny E. Scott ,  David Gavia ,  Juan Miguel Bilen ,  Anthony A. DiGiovanni

IPC: E21B10/36

CPC classification number: E21B10/5673 ,  E21B10/43

Abstract: Earth-boring tools include a body, one or more blades projecting outwardly from the body, and cutting elements carried by the blade. The cutting elements include at least one shearing cutting element and at least one gouging cutting element. Methods of forming an earth-boring tool include mounting a shearing cutting element comprising an at least substantially planar cutting face to a body of an earth-boring tool, and mounting a gouging cutting element comprising a non-planar cutting face to the body of the earth-boring tool. The gouging cutting element may be positioned on the body of the earth-boring tool such that the gouging cutting element will gouge formation material within a kerf cut in the formation material by the shearing cutting element, or between kerfs cut in the formation material by a plurality of shearing cutting elements.

Abstract translation: 钻孔工具包括主体，从主体向外突出的一个或多个刀片以及由刀片承载的切割元件。 切割元件包括至少一个剪切切割元件和至少一个切割元件。 形成钻孔工具的方法包括将包括至少基本上平面的切割面的剪切切割元件安装到钻孔工具的主体，以及将包括非平面切割面的气流切割元件安装到钻孔的主体 无聊的工具。 气蚀切割元件可以定位在钻孔工具的主体上，使得气刨切割元件将通过剪切切割元件在切割成形材料的切口内或在切割成形材料的切口之间切割形成材料 多个剪切切割元件。

公开(公告)号：US07861809B2

公开(公告)日：2011-01-04

申请号：US12019814

申请日：2008-01-25

Applicant: David Gavia ,  Ryan J. Hanford ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Eric E. McClain ,  Michael L. Doster

Inventor： David Gavia ,  Ryan J. Hanford ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Eric E. McClain ,  Michael L. Doster

IPC: E21B10/43

CPC classification number: E21B10/55 ,  E21B10/43

Abstract: A rotary drag bit includes a primary cutter row comprising at least one primary cutter and a multiple backup cutter group. The multiple backup cutter group comprises a first and second trailing cutter row, each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter groups making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.

Abstract translation: 旋转牵引钻头包括主切割器行，其包括至少一个主切割器和多个备用切割器组。 多个备用切割器组包括第一和第二拖尾切割器排，每个包括至少一个定位成跟随至少一个主切割器的切割器。 旋转拖曳钻头寿命由多个支撑刀具组延长，使刀头更加耐用，延长刀具的使用寿命。 此外，多支撑切割器组的切割器构造成选择性地接合正被钻孔的地下地层材料，从而提供改善的钻头寿命并减小刀具上的应力。 提供旋转阻力钻头的其他实施例。

公开(公告)号：US08316967B2

公开(公告)日：2012-11-27

申请号：US12265526

申请日：2008-11-05

Applicant: David Gavia

Inventor： David Gavia

IPC: E21B10/00

CPC classification number: E21B10/43 ,  Y10T29/49826

Abstract: Earth-boring tools comprise a body including a face at a leading end thereof and a shank at a trailing end. At least one primary blade may extend radially outward over the face and may comprise a plurality of cutting elements disposed thereon. At least one secondary blade may also extend radially outward over a portion of the face and the at least one secondary blade may comprise a plurality of cutting elements disposed thereon only over at least a portion of an area of greatest work rate per cutting element. Methods of forming earth-boring tools and methods of designing earth-boring tools are also disclosed.

Abstract translation: 钻孔工具包括主体，其包括在其前端处的面和在尾端处的柄。 至少一个主叶片可以在面上径向向外延伸，并且可以包括设置在其上的多个切割元件。 至少一个次级叶片也可以在面部的一部分上径向向外延伸，并且所述至少一个次级叶片可以包括仅在每个切割元件的最大工作速率区域的至少一部分上方设置的多个切割元件。 还揭示了一种形成钻孔工具的方法和设计镗孔刀具的方法。

公开(公告)号：US07896106B2

公开(公告)日：2011-03-01

申请号：US11862440

申请日：2007-09-27

Applicant: David Gavia

Inventor： David Gavia

IPC: E21B10/26 ,  E21B10/43

CPC classification number: E21B10/43

Abstract: A rotary drag bit exhibiting enhanced cutting efficiency and extended life is provided. The rotary drag bit comprises a bit body having a face surface, and a plurality of cutters coupled to the face surface of the bit body. The plurality of cutters comprises at least one pilot cutter and a rotationally trailing larger, primary cutter at substantially the same radius and, optionally of slightly less exposure. The pilot cutter is sized and positioned to pre-fracture the formation and perform an initial cut, while the primary cutter removes weakened, remaining formation material along the same rotational path. A method to pre-fracture subterranean formations using a rotary drag bit having a pilot cutter configuration is also provided.

Abstract translation: 提供了显示出提高的切割效率和延长使用寿命的旋转牵引钻头。 旋转拖曳钻头包括具有面表面的钻头体和联接到钻头体的表面的多个切割器。 多个切割器包括基本上相同半径的至少一个先导切割器和旋转拖尾较大的主切割器，并且可选地稍微较少的曝光。 导向切割器的尺寸和定位尺寸以预先断裂地层并执行初始切割，而主切割器沿着相同的旋转路径移除弱化的剩余的形成材料。 还提供了一种使用具有导向切割器构造的旋转拖曳钻头预裂开地下地层的方法。

公开(公告)号：US20110031029A1

公开(公告)日：2011-02-10

申请号：US12537899

申请日：2009-08-07

Applicant: David Gavia ,  Floyd C. Felderhoff ,  Matthew R. Isbell ,  Michael L. Doster

Inventor： David Gavia ,  Floyd C. Felderhoff ,  Matthew R. Isbell ,  Michael L. Doster

IPC: E21B10/55 ,  E21B10/42 ,  E21B10/54

CPC classification number: E21B10/43 ,  E21B10/55

Abstract: A rotary drag bit includes a primary cutter row comprising at least one primary cutter mounted on a blade, at least some cutters in the primary cutter row having a portion of a cutting surface thereof covered by a portion of the blade. A backup cutter row comprising at least one cutter may also be included, and at least a portion of a cutting surface of at least some cutters in the backup cutter row is covered by a portion of the blade. Enhanced support for cutters is provided against impact loading.

Abstract translation: 旋转牵引钻头包括主切割器行，其包括安装在叶片上的至少一个主切割器，主切割器列中的至少一些切割器具有其切割表面的一部分由叶片的一部分覆盖。 还可以包括包括至少一个切割器的备用切割器排，并且备用切割器行中的至少一些切割器的切割表面的至少一部分被叶片的一部分覆盖。 针对冲击载荷提供了对刀具的增强支撑。

公开(公告)号：US20090114453A1

公开(公告)日：2009-05-07

申请号：US12265526

申请日：2008-11-05

Applicant: David Gavia

Inventor： David Gavia

IPC: E21B10/42 ,  B23P11/00 ,  G06F17/50

CPC classification number: E21B10/43 ,  Y10T29/49826

Abstract: Earth-boring tools comprise a body including a face at a leading end thereof and a shank at a trailing end. At least one primary blade may extend radially outward over the face and may comprise a plurality of cutting elements disposed thereon. At least one secondary blade may also extend radially outward over a portion of the face and the at least one secondary blade may comprise a plurality of cutting elements disposed thereon only over at least a portion of an area of greatest work rate per cutting element. Methods of forming earth-boring tools and methods of designing earth-boring tools are also disclosed.

Abstract translation: 钻孔工具包括主体，其包括在其前端处的面和在尾端处的柄。 至少一个主叶片可以在面上径向向外延伸，并且可以包括设置在其上的多个切割元件。 至少一个次级叶片也可以在面部的一部分上径向向外延伸，并且所述至少一个次级叶片可以包括仅在每个切割元件的最大工作速率区域的至少一部分上方设置的多个切割元件。 还揭示了一种形成钻孔工具的方法和设计镗孔刀具的方法。

公开(公告)号：US20090020334A1

公开(公告)日：2009-01-22

申请号：US12174340

申请日：2008-07-16

Applicant: David Gavia

Inventor： David Gavia

IPC: E21B10/60

CPC classification number: E21B41/0078 ,  E21B10/61

Abstract: Nozzles for a drilling tools, such as rotary-type drag bits and roller cone bits, a drilling tool and drilling assembly comprising nozzles, and methods of conveying drilling fluid through a nozzle for use in drilling subterranean formations are provided. A nozzle may include a substantially cylindrical nozzle body having an axis and an inlet port with a primary passage extending therethrough, and at least one secondary passage that diverges from the primary passage at an exit port.

Abstract translation: 提供了用于诸如旋转式拖曳钻头和滚子锥钻头的钻具的喷嘴，包括喷嘴的钻孔工具和钻孔组件以及通过用于钻探地下地层的喷嘴的钻井液输送的方法。 喷嘴可以包括基本上圆柱形的喷嘴主体，其具有轴线和入口端口，主要通道延伸穿过其中，以及至少一个次级通道，其在出口处从主通道分叉。

公开(公告)号：US20070106487A1

公开(公告)日：2007-05-10

申请号：US11594710

申请日：2006-11-08

Applicant: David Gavia ,  Jack Oldham ,  Mathews George ,  Michael Doster

Inventor： David Gavia ,  Jack Oldham ,  Mathews George ,  Michael Doster

IPC: G06G7/48

CPC classification number: E21B10/54 ,  E21B10/00

Abstract: A method for evaluating existing drill bits and drill bit designs includes measuring several desired characteristics of a bit, including the wear experienced in drilling a formation, such as an actual formation or a simulated formation or a laboratory test fixture. A computer model may be used to evaluate the work-force and/or the sliding-wear rates that cutting elements of the bit experience as compared with the rate-of-penetration and/or durability of the bit. This information may be used to design a new drill bit, which may involve modification of the cutting elements (e.g., moving the location, volume (size and shape) or number of cutting elements from areas of the bit that receive lower work-force and sliding-wear rates to those areas that experience relatively greater work-force and sliding wear-rates. This may permit the cutting elements to be oriented more aggressively relative to a formation to be drilled. Other parameters that may be optimized include the bit profile, blade count, hydraulics, or the like.

Abstract translation: 用于评估现有钻头和钻头设计的方法包括测量钻头的几个期望特性，包括钻探地层（例如实际地层或模拟地层）或实验室测试夹具所经历的磨损。 可以使用计算机模型来评估钻头的切削元件与钻头的穿透速率和/或耐久性相比的经验的作用力和/或滑动磨损率。 该信息可以用于设计新的钻头，其可以涉及切割元件的修改（例如，移动位置，体积（尺寸和形状）或切割元件的数量从接收较低的作用力的钻头的区域，以及 对于经历相对较大的工作力和滑动磨损率的区域的滑动磨损率，这可能允许切削元件相对于要钻削的地层更积极地定向，可以优化的其它参数包括钻头轮廓， 叶片数量，液压装置等。